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[PATCH] xtensa: remove extra header files

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The Xtensa port contained many header files that were never needed.  This
rather lengthy patch removes all those files.  Unfortunately, there were
many dependencies that needed to be updated, so this patch touches quite a
few source files.

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel 2006-12-10 02:18:48 -08:00 committed by Linus Torvalds
parent fd43fe19b8
commit 173d668138
71 changed files with 1402 additions and 7085 deletions
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21
arch/xtensa/Kconfig
View File

@ -48,25 +48,10 @@ menu "Processor type and features"
choice
prompt "Xtensa Processor Configuration"
default XTENSA_CPU_LINUX_BE
default XTENSA_VARIANT_FSF
config XTENSA_CPU_LINUX_BE
bool "linux_be"
---help---
The linux_be processor configuration is the baseline Xtensa
configurations included in this kernel and also used by
binutils, gcc, and gdb. It contains no TIE, no coprocessors,
and the following configuration options:
Code Density Option 2 Misc Special Registers
NSA/NSAU Instructions 128-bit Data Bus Width
Processor ID 8K, 2-way I and D Caches
Zero-Overhead Loops 2 Inst Address Break Registers
Big Endian 2 Data Address Break Registers
64 General-Purpose Registers JTAG Interface and Trace Port
17 Interrupts MMU w/ TLBs and Autorefill
3 Interrupt Levels 8 Autorefill Ways (I/D TLBs)
3 Timers Unaligned Exceptions
config XTENSA_VARIANT_FSF
bool "fsf"
endchoice
config MMU

25
arch/xtensa/Makefile
View File

@ -11,13 +11,13 @@
# this architecture
# Core configuration.
# (Use CPU=<xtensa_config> to use another default compiler.)
# (Use VAR=<xtensa_config> to use another default compiler.)
cpu-$(CONFIG_XTENSA_CPU_LINUX_BE) := linux_be
cpu-$(CONFIG_XTENSA_CPU_LINUX_CUSTOM) := linux_custom
variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf
variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom
CPU = $(cpu-y)
export CPU
VARIANT = $(variant-y)
export VARIANT
# Platform configuration
@ -27,8 +27,6 @@ platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
PLATFORM = $(platform-y)
export PLATFORM
CPPFLAGS += $(if $(KBUILD_SRC),-I$(srctree)/include/asm-xtensa/)
CPPFLAGS += -Iinclude/asm
CFLAGS += -pipe -mlongcalls
KBUILD_DEFCONFIG := iss_defconfig
@ -41,12 +39,12 @@ core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
# Test for cross compiling
ifneq ($(CPU),)
ifneq ($(VARIANT),)
COMPILE_ARCH = $(shell uname -m)
ifneq ($(COMPILE_ARCH), xtensa)
ifndef CROSS_COMPILE
CROSS_COMPILE = xtensa_$(CPU)-
CROSS_COMPILE = xtensa_$(VARIANT)-
endif
endif
endif
@ -68,14 +66,13 @@ archinc := include/asm-xtensa
archprepare: $(archinc)/.platform
# Update machine cpu and platform symlinks if something which affects
# Update processor variant and platform symlinks if something which affects
# them changed.
$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/auto.conf
@echo ' SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)'
@echo ' SYMLINK $(archinc)/variant -> $(archinc)/variant-$(VARIANT)'
$(Q)mkdir -p $(archinc)
$(Q)mkdir -p $(archinc)/xtensa
$(Q)ln -fsn $(srctree)/$(archinc)/xtensa/config-$(CPU) $(archinc)/xtensa/config
$(Q)ln -fsn $(srctree)/$(archinc)/variant-$(VARIANT) $(archinc)/variant
@echo ' SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
$(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
@touch $@
@ -89,7 +86,7 @@ zImage zImage.initrd: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
CLEAN_FILES += arch/xtensa/vmlinux.lds \
$(archinc)/platform $(archinc)/xtensa/config \
$(archinc)/platform $(archinc)/variant \
$(archinc)/.platform
define archhelp

3
arch/xtensa/boot/boot-elf/bootstrap.S
View File

@ -1,7 +1,4 @@
#include <xtensa/config/specreg.h>
#include <xtensa/config/core.h>
#include <asm/bootparam.h>

37
arch/xtensa/boot/boot-redboot/bootstrap.S
View File

@ -1,9 +1,7 @@
#define _ASMLANGUAGE
#include <xtensa/config/specreg.h>
#include <xtensa/config/core.h>
#include <xtensa/cacheasm.h>
#include <asm/variant/core.h>
#include <asm/regs.h>
#include <asm/asmmacro.h>
#include <asm/cacheasm.h>
/*
* RB-Data: RedBoot data/bss
* P: Boot-Parameters
@ -77,8 +75,14 @@ _start:
/* Note: The assembler cannot relax "addi a0, a0, ..." to an
l32r, so we load to a4 first. */
addi a4, a0, __start - __start_a0
mov a0, a4
# addi a4, a0, __start - __start_a0
# mov a0, a4
movi a4, __start
movi a5, __start_a0
add a4, a0, a4
sub a0, a4, a5
movi a4, __start
movi a5, __reloc_end
@ -106,9 +110,13 @@ _start:
/* We have to flush and invalidate the caches here before we jump. */
#if XCHAL_DCACHE_IS_WRITEBACK
dcache_writeback_all a5, a6
___flush_dcache_all a5 a6
#endif
icache_invalidate_all a5, a6
___invalidate_icache_all a5 a6
isync
movi a11, _reloc
jx a11
@ -209,9 +217,14 @@ _reloc:
/* jump to the kernel */
2:
#if XCHAL_DCACHE_IS_WRITEBACK
dcache_writeback_all a5, a6
___flush_dcache_all a5 a6
#endif
icache_invalidate_all a5, a6
___invalidate_icache_all a5 a6
isync
movi a5, __start
movi a3, boot_initrd_start

6
arch/xtensa/configs/iss_defconfig
View File

@ -53,11 +53,7 @@ CONFIG_CC_ALIGN_JUMPS=0
#
# Processor type and features
#
CONFIG_XTENSA_ARCH_LINUX_BE=y
# CONFIG_XTENSA_ARCH_LINUX_LE is not set
# CONFIG_XTENSA_ARCH_LINUX_TEST is not set
# CONFIG_XTENSA_ARCH_S5 is not set
# CONFIG_XTENSA_CUSTOM is not set
CONFIG_XTENSA_VARIANT_FSF=y
CONFIG_MMU=y
# CONFIG_XTENSA_UNALIGNED_USER is not set
# CONFIG_PREEMPT is not set

42
arch/xtensa/kernel/align.S
View File

@ -16,14 +16,9 @@
*/
#include <linux/linkage.h>
#include <asm/ptrace.h>
#include <asm/ptrace.h>
#include <asm/current.h>
#include <asm/asm-offsets.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/thread_info.h>
#if XCHAL_UNALIGNED_LOAD_EXCEPTION || XCHAL_UNALIGNED_STORE_EXCEPTION
@ -216,7 +211,7 @@ ENTRY(fast_unaligned)
extui a5, a4, INSN_OP0, 4 # get insn.op0 nibble
#if XCHAL_HAVE_NARROW
#if XCHAL_HAVE_DENSITY
_beqi a5, OP0_L32I_N, .Lload # L32I.N, jump
addi a6, a5, -OP0_S32I_N
_beqz a6, .Lstore # S32I.N, do a store
@ -251,7 +246,7 @@ ENTRY(fast_unaligned)
#endif
__src_b a3, a5, a6 # a3 has the data word
#if XCHAL_HAVE_NARROW
#if XCHAL_HAVE_DENSITY
addi a7, a7, 2 # increment PC (assume 16-bit insn)
extui a5, a4, INSN_OP0, 4
@ -279,14 +274,14 @@ ENTRY(fast_unaligned)
1:
#if XCHAL_HAVE_LOOP
rsr a3, LEND # check if we reached LEND
bne a7, a3, 1f
rsr a3, LCOUNT # and LCOUNT != 0
beqz a3, 1f
addi a3, a3, -1 # decrement LCOUNT and set
#if XCHAL_HAVE_LOOPS
rsr a5, LEND # check if we reached LEND
bne a7, a5, 1f
rsr a5, LCOUNT # and LCOUNT != 0
beqz a5, 1f
addi a5, a5, -1 # decrement LCOUNT and set
rsr a7, LBEG # set PC to LBEGIN
wsr a3, LCOUNT
wsr a5, LCOUNT
#endif
1: wsr a7, EPC_1 # skip load instruction
@ -336,7 +331,7 @@ ENTRY(fast_unaligned)
movi a6, 0 # mask: ffffffff:00000000
#if XCHAL_HAVE_NARROW
#if XCHAL_HAVE_DENSITY
addi a7, a7, 2 # incr. PC,assume 16-bit instruction
extui a5, a4, INSN_OP0, 4 # extract OP0
@ -359,14 +354,14 @@ ENTRY(fast_unaligned)
/* Get memory address */
1:
#if XCHAL_HAVE_LOOP
rsr a3, LEND # check if we reached LEND
bne a7, a3, 1f
rsr a3, LCOUNT # and LCOUNT != 0
beqz a3, 1f
addi a3, a3, -1 # decrement LCOUNT and set
#if XCHAL_HAVE_LOOPS
rsr a4, LEND # check if we reached LEND
bne a7, a4, 1f
rsr a4, LCOUNT # and LCOUNT != 0
beqz a4, 1f
addi a4, a4, -1 # decrement LCOUNT and set
rsr a7, LBEG # set PC to LBEGIN
wsr a3, LCOUNT
wsr a4, LCOUNT
#endif
1: wsr a7, EPC_1 # skip store instruction
@ -416,6 +411,7 @@ ENTRY(fast_unaligned)
/* Restore working register */
l32i a8, a2, PT_AREG8
l32i a7, a2, PT_AREG7
l32i a6, a2, PT_AREG6
l32i a5, a2, PT_AREG5
@ -446,7 +442,7 @@ ENTRY(fast_unaligned)
mov a1, a2
rsr a0, PS
bbsi.l a2, PS_UM_SHIFT, 1f # jump if user mode
bbsi.l a2, PS_UM_BIT, 1f # jump if user mode
movi a0, _kernel_exception
jx a0

2
arch/xtensa/kernel/coprocessor.S
View File

@ -90,7 +90,6 @@ ENTRY(enable_coprocessor)
rsync
retw
#endif
ENTRY(save_coprocessor_extra)
entry sp, 16
@ -197,4 +196,5 @@ _xtensa_reginfo_tables:
XCHAL_CP7_SA_CONTENTS_LIBDB
.word 0xFC000000 /* invalid register number,marks end of table*/
_xtensa_reginfo_table_end:
#endif

28
arch/xtensa/kernel/entry.S
View File

@ -24,7 +24,7 @@
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/signal.h>
#include <xtensa/coreasm.h>
#include <asm/tlbflush.h>
/* Unimplemented features. */
@ -364,7 +364,7 @@ common_exception:
movi a2, 1
extui a3, a3, 0, 1 # a3 = PS.INTLEVEL[0]
moveqz a3, a2, a0 # a3 = 1 iff interrupt exception
movi a2, PS_WOE_MASK
movi a2, 1 << PS_WOE_BIT
or a3, a3, a2
rsr a0, EXCCAUSE
xsr a3, PS
@ -399,7 +399,7 @@ common_exception_return:
/* Jump if we are returning from kernel exceptions. */
1: l32i a3, a1, PT_PS
_bbsi.l a3, PS_UM_SHIFT, 2f
_bbsi.l a3, PS_UM_BIT, 2f
j kernel_exception_exit
/* Specific to a user exception exit:
@ -422,7 +422,7 @@ common_exception_return:
* (Hint: There is only one user exception frame on stack)
*/
movi a3, PS_WOE_MASK
movi a3, 1 << PS_WOE_BIT
_bbsi.l a4, TIF_NEED_RESCHED, 3f
_bbci.l a4, TIF_SIGPENDING, 4f
@ -694,7 +694,7 @@ common_exception_exit:
ENTRY(debug_exception)
rsr a0, EPS + XCHAL_DEBUGLEVEL
bbsi.l a0, PS_EXCM_SHIFT, 1f # exception mode
bbsi.l a0, PS_EXCM_BIT, 1f # exception mode
/* Set EPC_1 and EXCCAUSE */
@ -707,7 +707,7 @@ ENTRY(debug_exception)
/* Restore PS to the value before the debug exc but with PS.EXCM set.*/
movi a2, 1 << PS_EXCM_SHIFT
movi a2, 1 << PS_EXCM_BIT
or a2, a0, a2
movi a0, debug_exception # restore a3, debug jump vector
wsr a2, PS
@ -715,7 +715,7 @@ ENTRY(debug_exception)
/* Switch to kernel/user stack, restore jump vector, and save a0 */
bbsi.l a2, PS_UM_SHIFT, 2f # jump if user mode
bbsi.l a2, PS_UM_BIT, 2f # jump if user mode
addi a2, a1, -16-PT_SIZE # assume kernel stack
s32i a0, a2, PT_AREG0
@ -778,7 +778,7 @@ ENTRY(unrecoverable_exception)
wsr a1, WINDOWBASE
rsync
movi a1, PS_WOE_MASK | 1
movi a1, (1 << PS_WOE_BIT) | 1
wsr a1, PS
rsync
@ -1491,7 +1491,7 @@ ENTRY(_spill_registers)
*/
rsr a0, PS
_bbci.l a0, PS_UM_SHIFT, 1f
_bbci.l a0, PS_UM_BIT, 1f
/* User space: Setup a dummy frame and kill application.
* Note: We assume EXC_TABLE_KSTK contains a valid stack pointer.
@ -1510,7 +1510,7 @@ ENTRY(_spill_registers)
l32i a1, a3, EXC_TABLE_KSTK
wsr a3, EXCSAVE_1
movi a4, PS_WOE_MASK | 1
movi a4, (1 << PS_WOE_BIT) | 1
wsr a4, PS
rsync
@ -1612,7 +1612,7 @@ ENTRY(fast_second_level_miss)
rsr a1, PTEVADDR
srli a1, a1, PAGE_SHIFT
slli a1, a1, PAGE_SHIFT # ptevaddr & PAGE_MASK
addi a1, a1, DTLB_WAY_PGTABLE # ... + way_number
addi a1, a1, DTLB_WAY_PGD # ... + way_number
wdtlb a0, a1
dsync
@ -1654,7 +1654,7 @@ ENTRY(fast_second_level_miss)
mov a1, a2
rsr a2, PS
bbsi.l a2, PS_UM_SHIFT, 1f
bbsi.l a2, PS_UM_BIT, 1f
j _kernel_exception
1: j _user_exception
@ -1753,7 +1753,7 @@ ENTRY(fast_store_prohibited)
mov a1, a2
rsr a2, PS
bbsi.l a2, PS_UM_SHIFT, 1f
bbsi.l a2, PS_UM_BIT, 1f
j _kernel_exception
1: j _user_exception
@ -1924,7 +1924,7 @@ ENTRY(_switch_to)
/* Disable ints while we manipulate the stack pointer; spill regs. */
movi a5, PS_EXCM_MASK | LOCKLEVEL
movi a5, (1 << PS_EXCM_BIT) | LOCKLEVEL
xsr a5, PS
rsr a3, EXCSAVE_1
rsync

53
arch/xtensa/kernel/head.S
View File

@ -15,9 +15,9 @@
* Kevin Chea
*/
#include <xtensa/cacheasm.h>
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/cacheasm.h>
/*
* This module contains the entry code for kernel images. It performs the
@ -32,13 +32,6 @@
*
*/
.macro iterate from, to , cmd
.ifeq ((\to - \from) & ~0xfff)
\cmd \from
iterate "(\from+1)", \to, \cmd
.endif
.endm
/*
* _start
*
@ -64,7 +57,7 @@ _startup:
/* Disable interrupts and exceptions. */
movi a0, XCHAL_PS_EXCM_MASK
movi a0, LOCKLEVEL
wsr a0, PS
/* Preserve the pointer to the boot parameter list in EXCSAVE_1 */
@ -91,11 +84,11 @@ _startup:
movi a1, 15
wsr a0, ICOUNTLEVEL
.macro reset_dbreak num
wsr a0, DBREAKC + \num
.endm
iterate 0, XCHAL_NUM_IBREAK-1, reset_dbreak
.set _index, 0
.rept XCHAL_NUM_DBREAK - 1
wsr a0, DBREAKC + _index
.set _index, _index + 1
.endr
#endif
/* Clear CCOUNT (not really necessary, but nice) */
@ -110,10 +103,11 @@ _startup:
/* Disable all timers. */
.macro reset_timer num
wsr a0, CCOMPARE_0 + \num
.endm
iterate 0, XCHAL_NUM_TIMERS-1, reset_timer
.set _index, 0
.rept XCHAL_NUM_TIMERS - 1
wsr a0, CCOMPARE + _index
.set _index, _index + 1
.endr
/* Interrupt initialization. */
@ -139,12 +133,21 @@ _startup:
rsync
/* Initialize the caches.
* Does not include flushing writeback d-cache.
* a6, a7 are just working registers (clobbered).
* a2, a3 are just working registers (clobbered).
*/
icache_reset a2, a3
dcache_reset a2, a3
#if XCHAL_DCACHE_LINE_LOCKABLE
___unlock_dcache_all a2 a3
#endif
#if XCHAL_ICACHE_LINE_LOCKABLE
___unlock_icache_all a2 a3
#endif
___invalidate_dcache_all a2 a3
___invalidate_icache_all a2 a3
isync
/* Unpack data sections
*
@ -181,9 +184,9 @@ _startup:
movi a2, _bss_start # start of BSS
movi a3, _bss_end # end of BSS
1: addi a2, a2, 4
__loopt a2, a3, a4, 2
s32i a0, a2, 0
blt a2, a3, 1b
__endla a2, a4, 4
#if XCHAL_DCACHE_IS_WRITEBACK
@ -191,7 +194,7 @@ _startup:
* instructions/data are available.
*/
dcache_writeback_all a2, a3
___flush_dcache_all a2 a3
#endif
/* Setup stack and enable window exceptions (keep irqs disabled) */

44
arch/xtensa/kernel/pci-dma.c
View File

@ -1,5 +1,5 @@
/*
* arch/xtensa/kernel/pci-dma.c
* arch/xtensa/pci-dma.c
*
* DMA coherent memory allocation.
*
@ -29,28 +29,48 @@
*/
void *
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp)
dma_alloc_coherent(struct device *dev,size_t size,dma_addr_t *handle,gfp_t flag)
{
void *ret;
unsigned long ret;
unsigned long uncached = 0;
/* ignore region speicifiers */
gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
if (dev == NULL || (*dev->dma_mask < 0xffffffff))
gfp |= GFP_DMA;
ret = (void *)__get_free_pages(gfp, get_order(size));
flag &= ~(__GFP_DMA | __GFP_HIGHMEM);
if (ret != NULL) {
memset(ret, 0, size);
*handle = virt_to_bus(ret);
if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
flag |= GFP_DMA;
ret = (unsigned long)__get_free_pages(flag, get_order(size));
if (ret == 0)
return NULL;
/* We currently don't support coherent memory outside KSEG */
if (ret < XCHAL_KSEG_CACHED_VADDR
|| ret >= XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_SIZE)
BUG();
if (ret != 0) {
memset((void*) ret, 0, size);
uncached = ret+XCHAL_KSEG_BYPASS_VADDR-XCHAL_KSEG_CACHED_VADDR;
*handle = virt_to_bus((void*)ret);
__flush_invalidate_dcache_range(ret, size);
}
return (void*) BYPASS_ADDR((unsigned long)ret);
return (void*)uncached;
}
void dma_free_coherent(struct device *hwdev, size_t size,
void *vaddr, dma_addr_t dma_handle)
{
free_pages(CACHED_ADDR((unsigned long)vaddr), get_order(size));
long addr=(long)vaddr+XCHAL_KSEG_CACHED_VADDR-XCHAL_KSEG_BYPASS_VADDR;
if (addr < 0 || addr >= XCHAL_KSEG_SIZE)
BUG();
free_pages(addr, get_order(size));
}

37
arch/xtensa/kernel/process.c
View File

@ -1,4 +1,3 @@
// TODO verify coprocessor handling
/*
* arch/xtensa/kernel/process.c
*
@ -43,7 +42,7 @@
#include <asm/irq.h>
#include <asm/atomic.h>
#include <asm/asm-offsets.h>
#include <asm/coprocessor.h>
#include <asm/regs.h>
extern void ret_from_fork(void);
@ -67,25 +66,6 @@ void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
#if XCHAL_CP_NUM > 0
/*
* Coprocessor ownership.
*/
coprocessor_info_t coprocessor_info[] = {
{ 0, XTENSA_CPE_CP0_OFFSET },
{ 0, XTENSA_CPE_CP1_OFFSET },
{ 0, XTENSA_CPE_CP2_OFFSET },
{ 0, XTENSA_CPE_CP3_OFFSET },
{ 0, XTENSA_CPE_CP4_OFFSET },
{ 0, XTENSA_CPE_CP5_OFFSET },
{ 0, XTENSA_CPE_CP6_OFFSET },
{ 0, XTENSA_CPE_CP7_OFFSET },
};
#endif
/*
* Powermanagement idle function, if any is provided by the platform.
*/
@ -110,12 +90,10 @@ void cpu_idle(void)
void exit_thread(void)
{
release_coprocessors(current); /* Empty macro if no CPs are defined */
}
void flush_thread(void)
{
release_coprocessors(current); /* Empty macro if no CPs are defined */
}
/*
@ -275,7 +253,7 @@ void do_copy_regs (xtensa_gregset_t *elfregs, struct pt_regs *regs,
*/
elfregs->pc = regs->pc;
elfregs->ps = (regs->ps & ~XCHAL_PS_EXCM_MASK);
elfregs->ps = (regs->ps & ~(1 << PS_EXCM_BIT));
elfregs->exccause = regs->exccause;
elfregs->excvaddr = regs->excvaddr;
elfregs->windowbase = regs->windowbase;
@ -325,7 +303,7 @@ void do_restore_regs (xtensa_gregset_t *elfregs, struct pt_regs *regs,
*/
regs->pc = elfregs->pc;
regs->ps = (elfregs->ps | XCHAL_PS_EXCM_MASK);
regs->ps = (elfregs->ps | (1 << PS_EXCM_BIT));
regs->exccause = elfregs->exccause;
regs->excvaddr = elfregs->excvaddr;
regs->windowbase = elfregs->windowbase;
@ -459,16 +437,7 @@ int do_restore_fpregs (elf_fpregset_t *fpregs, struct pt_regs *regs,
int
dump_task_fpu(struct pt_regs *regs, struct task_struct *task, elf_fpregset_t *r)
{
/* see asm/coprocessor.h for this magic number 16 */
#if XTENSA_CP_EXTRA_SIZE > 16
do_save_fpregs (r, regs, task);
/* For now, bit 16 means some extra state may be present: */
// FIXME!! need to track to return more accurate mask
return 0x10000 | XCHAL_CP_MASK;
#else
return 0; /* no coprocessors active on this processor */
#endif
}
/*

2
arch/xtensa/kernel/ptrace.c
View File

@ -96,7 +96,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
/* Note: PS.EXCM is not set while user task is running;
* its being set in regs is for exception handling
* convenience. */
tmp = (regs->ps & ~XCHAL_PS_EXCM_MASK);
tmp = (regs->ps & ~(1 << PS_EXCM_BIT));
break;
case REG_WB:
tmp = regs->windowbase;

41
arch/xtensa/kernel/setup.c
View File

@ -42,8 +42,6 @@
#include <asm/page.h>
#include <asm/setup.h>
#include <xtensa/config/system.h>
#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
struct screen_info screen_info = { 0, 24, 0, 0, 0, 80, 0, 0, 0, 24, 1, 16};
#endif
@ -336,7 +334,7 @@ c_show(struct seq_file *f, void *slot)
/* high-level stuff */
seq_printf(f,"processor\t: 0\n"
"vendor_id\t: Tensilica\n"
"model\t\t: Xtensa " XCHAL_HW_RELEASE_NAME "\n"
"model\t\t: Xtensa " XCHAL_HW_VERSION_NAME "\n"
"core ID\t\t: " XCHAL_CORE_ID "\n"
"build ID\t: 0x%x\n"
"byte order\t: %s\n"
@ -420,25 +418,6 @@ c_show(struct seq_file *f, void *slot)
XCHAL_NUM_TIMERS,
XCHAL_DEBUGLEVEL);
/* Coprocessors */
#if XCHAL_HAVE_CP
seq_printf(f, "coprocessors\t: %d\n", XCHAL_CP_NUM);
#else
seq_printf(f, "coprocessors\t: none\n");
#endif
/* {I,D}{RAM,ROM} and XLMI */
seq_printf(f,"inst ROMs\t: %d\n"
"inst RAMs\t: %d\n"
"data ROMs\t: %d\n"
"data RAMs\t: %d\n"
"XLMI ports\t: %d\n",
XCHAL_NUM_IROM,
XCHAL_NUM_IRAM,
XCHAL_NUM_DROM,
XCHAL_NUM_DRAM,
XCHAL_NUM_XLMI);
/* Cache */
seq_printf(f,"icache line size: %d\n"
"icache ways\t: %d\n"
@ -466,24 +445,6 @@ c_show(struct seq_file *f, void *slot)
XCHAL_DCACHE_WAYS,
XCHAL_DCACHE_SIZE);
/* MMU */
seq_printf(f,"ASID bits\t: %d\n"
"ASID invalid\t: %d\n"
"ASID kernel\t: %d\n"
"rings\t\t: %d\n"
"itlb ways\t: %d\n"
"itlb AR ways\t: %d\n"
"dtlb ways\t: %d\n"
"dtlb AR ways\t: %d\n",
XCHAL_MMU_ASID_BITS,
XCHAL_MMU_ASID_INVALID,
XCHAL_MMU_ASID_KERNEL,
XCHAL_MMU_RINGS,
XCHAL_ITLB_WAYS,
XCHAL_ITLB_ARF_WAYS,
XCHAL_DTLB_WAYS,
XCHAL_DTLB_ARF_WAYS);
return 0;
}

16
arch/xtensa/kernel/signal.c
View File

@ -12,8 +12,8 @@
*
*/
#include <xtensa/config/core.h>
#include <xtensa/hal.h>
#include <asm/variant/core.h>
#include <asm/coprocessor.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
@ -216,8 +216,8 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc)
* handler, or the user mode value doesn't matter (e.g. PS.OWB).
*/
err |= __get_user(ps, &sc->sc_ps);
regs->ps = (regs->ps & ~XCHAL_PS_CALLINC_MASK)
| (ps & XCHAL_PS_CALLINC_MASK);
regs->ps = (regs->ps & ~PS_CALLINC_MASK)
| (ps & PS_CALLINC_MASK);
/* Additional corruption checks */
@ -280,7 +280,7 @@ flush_my_cpstate(struct task_struct *tsk)
static int
save_cpextra (struct _cpstate *buf)
{
#if (XCHAL_EXTRA_SA_SIZE == 0) && (XCHAL_CP_NUM == 0)
#if XCHAL_CP_NUM == 0
return 0;
#else
@ -497,8 +497,10 @@ gen_return_code(unsigned char *codemem, unsigned int use_rt_sigreturn)
/* Flush generated code out of the data cache */
if (err == 0)
__flush_invalidate_cache_range((unsigned long)codemem, 6UL);
if (err == 0) {
__invalidate_icache_range((unsigned long)codemem, 6UL);
__flush_invalidate_dcache_range((unsigned long)codemem, 6UL);
}
return err;
}

4
arch/xtensa/kernel/syscalls.c
View File

@ -175,8 +175,8 @@ void system_call (struct pt_regs *regs)
* interrupts in the first place:
*/
local_save_flags (ps);
local_irq_restore((ps & ~XCHAL_PS_INTLEVEL_MASK) |
(regs->ps & XCHAL_PS_INTLEVEL_MASK) );
local_irq_restore((ps & ~PS_INTLEVEL_MASK) |
(regs->ps & PS_INTLEVEL_MASK) );
if (syscallnr > __NR_Linux_syscalls) {
regs->areg[2] = -ENOSYS;

56
arch/xtensa/kernel/traps.c
View File

@ -75,7 +75,7 @@ extern void system_call (struct pt_regs*);
#define USER 0x02
#define COPROCESSOR(x) \
{ XCHAL_EXCCAUSE_COPROCESSOR ## x ## _DISABLED, USER, fast_coprocessor }
{ EXCCAUSE_COPROCESSOR ## x ## _DISABLED, USER, fast_coprocessor }
typedef struct {
int cause;
@ -85,38 +85,38 @@ typedef struct {
dispatch_init_table_t __init dispatch_init_table[] = {
{ XCHAL_EXCCAUSE_ILLEGAL_INSTRUCTION, 0, do_illegal_instruction},
{ XCHAL_EXCCAUSE_SYSTEM_CALL, KRNL, fast_syscall_kernel },
{ XCHAL_EXCCAUSE_SYSTEM_CALL, USER, fast_syscall_user },
{ XCHAL_EXCCAUSE_SYSTEM_CALL, 0, system_call },
/* XCHAL_EXCCAUSE_INSTRUCTION_FETCH unhandled */
/* XCHAL_EXCCAUSE_LOAD_STORE_ERROR unhandled*/
{ XCHAL_EXCCAUSE_LEVEL1_INTERRUPT, 0, do_interrupt },
{ XCHAL_EXCCAUSE_ALLOCA, USER|KRNL, fast_alloca },
/* XCHAL_EXCCAUSE_INTEGER_DIVIDE_BY_ZERO unhandled */
/* XCHAL_EXCCAUSE_PRIVILEGED unhandled */
{ EXCCAUSE_ILLEGAL_INSTRUCTION, 0, do_illegal_instruction},
{ EXCCAUSE_SYSTEM_CALL, KRNL, fast_syscall_kernel },
{ EXCCAUSE_SYSTEM_CALL, USER, fast_syscall_user },
{ EXCCAUSE_SYSTEM_CALL, 0, system_call },
/* EXCCAUSE_INSTRUCTION_FETCH unhandled */
/* EXCCAUSE_LOAD_STORE_ERROR unhandled*/
{ EXCCAUSE_LEVEL1_INTERRUPT, 0, do_interrupt },
{ EXCCAUSE_ALLOCA, USER|KRNL, fast_alloca },
/* EXCCAUSE_INTEGER_DIVIDE_BY_ZERO unhandled */
/* EXCCAUSE_PRIVILEGED unhandled */
#if XCHAL_UNALIGNED_LOAD_EXCEPTION || XCHAL_UNALIGNED_STORE_EXCEPTION
#ifdef CONFIG_UNALIGNED_USER
{ XCHAL_EXCCAUSE_UNALIGNED, USER, fast_unaligned },
{ EXCCAUSE_UNALIGNED, USER, fast_unaligned },
#else
{ XCHAL_EXCCAUSE_UNALIGNED, 0, do_unaligned_user },
{ EXCCAUSE_UNALIGNED, 0, do_unaligned_user },
#endif
{ XCHAL_EXCCAUSE_UNALIGNED, KRNL, fast_unaligned },
{ EXCCAUSE_UNALIGNED, KRNL, fast_unaligned },
#endif
{ XCHAL_EXCCAUSE_ITLB_MISS, 0, do_page_fault },
{ XCHAL_EXCCAUSE_ITLB_MISS, USER|KRNL, fast_second_level_miss},
{ XCHAL_EXCCAUSE_ITLB_MULTIHIT, 0, do_multihit },
{ XCHAL_EXCCAUSE_ITLB_PRIVILEGE, 0, do_page_fault },
/* XCHAL_EXCCAUSE_SIZE_RESTRICTION unhandled */
{ XCHAL_EXCCAUSE_FETCH_CACHE_ATTRIBUTE, 0, do_page_fault },
{ XCHAL_EXCCAUSE_DTLB_MISS, USER|KRNL, fast_second_level_miss},
{ XCHAL_EXCCAUSE_DTLB_MISS, 0, do_page_fault },
{ XCHAL_EXCCAUSE_DTLB_MULTIHIT, 0, do_multihit },
{ XCHAL_EXCCAUSE_DTLB_PRIVILEGE, 0, do_page_fault },
/* XCHAL_EXCCAUSE_DTLB_SIZE_RESTRICTION unhandled */
{ XCHAL_EXCCAUSE_STORE_CACHE_ATTRIBUTE, USER|KRNL, fast_store_prohibited },
{ XCHAL_EXCCAUSE_STORE_CACHE_ATTRIBUTE, 0, do_page_fault },
{ XCHAL_EXCCAUSE_LOAD_CACHE_ATTRIBUTE, 0, do_page_fault },
{ EXCCAUSE_ITLB_MISS, 0, do_page_fault },
{ EXCCAUSE_ITLB_MISS, USER|KRNL, fast_second_level_miss},
{ EXCCAUSE_ITLB_MULTIHIT, 0, do_multihit },
{ EXCCAUSE_ITLB_PRIVILEGE, 0, do_page_fault },
/* EXCCAUSE_SIZE_RESTRICTION unhandled */
{ EXCCAUSE_FETCH_CACHE_ATTRIBUTE, 0, do_page_fault },
{ EXCCAUSE_DTLB_MISS, USER|KRNL, fast_second_level_miss},
{ EXCCAUSE_DTLB_MISS, 0, do_page_fault },
{ EXCCAUSE_DTLB_MULTIHIT, 0, do_multihit },
{ EXCCAUSE_DTLB_PRIVILEGE, 0, do_page_fault },
/* EXCCAUSE_DTLB_SIZE_RESTRICTION unhandled */
{ EXCCAUSE_STORE_CACHE_ATTRIBUTE, USER|KRNL, fast_store_prohibited },
{ EXCCAUSE_STORE_CACHE_ATTRIBUTE, 0, do_page_fault },
{ EXCCAUSE_LOAD_CACHE_ATTRIBUTE, 0, do_page_fault },
/* XCCHAL_EXCCAUSE_FLOATING_POINT unhandled */
#if (XCHAL_CP_MASK & 1)
COPROCESSOR(0),

12
arch/xtensa/kernel/vectors.S
View File

@ -53,6 +53,8 @@
#include <asm/thread_info.h>
#include <asm/processor.h>
#define WINDOW_VECTORS_SIZE 0x180
/*
* User exception vector. (Exceptions with PS.UM == 1, PS.EXCM == 0)
@ -210,7 +212,7 @@ ENTRY(_DoubleExceptionVector)
/* Check for kernel double exception (usually fatal). */
rsr a3, PS
_bbci.l a3, PS_UM_SHIFT, .Lksp
_bbci.l a3, PS_UM_BIT, .Lksp
/* Check if we are currently handling a window exception. */
/* Note: We don't need to indicate that we enter a critical section. */
@ -219,7 +221,7 @@ ENTRY(_DoubleExceptionVector)
movi a3, XCHAL_WINDOW_VECTORS_VADDR
_bltu a0, a3, .Lfixup
addi a3, a3, XSHAL_WINDOW_VECTORS_SIZE
addi a3, a3, WINDOW_VECTORS_SIZE
_bgeu a0, a3, .Lfixup
/* Window overflow/underflow exception. Get stack pointer. */
@ -245,7 +247,7 @@ ENTRY(_DoubleExceptionVector)
wsr a2, DEPC # save stack pointer temporarily
rsr a0, PS
extui a0, a0, XCHAL_PS_OWB_SHIFT, XCHAL_PS_OWB_BITS
extui a0, a0, PS_OWB_SHIFT, 4
wsr a0, WINDOWBASE
rsync
@ -312,8 +314,8 @@ ENTRY(_DoubleExceptionVector)
.Lksp: /* a0: a0, a1: a1, a2: a2, a3: trashed, depc: depc, excsave: a3 */
rsr a3, EXCCAUSE
beqi a3, XCHAL_EXCCAUSE_ITLB_MISS, 1f
addi a3, a3, -XCHAL_EXCCAUSE_DTLB_MISS
beqi a3, EXCCAUSE_ITLB_MISS, 1f
addi a3, a3, -EXCCAUSE_DTLB_MISS
bnez a3, .Lunrecoverable
1: movi a3, fast_second_level_miss_double_kernel
jx a3

27
arch/xtensa/kernel/vmlinux.lds.S
View File

@ -16,20 +16,17 @@
#include <asm-generic/vmlinux.lds.h>
#define _NOCLANGUAGE
#undef __ASSEMBLER__
#include <xtensa/config/core.h>
#include <xtensa/config/system.h>
#include <asm/variant/core.h>
OUTPUT_ARCH(xtensa)
ENTRY(_start)
#if XCHAL_MEMORY_ORDER == XTHAL_BIGENDIAN
#ifdef __XTENSA_EB__
jiffies = jiffies_64 + 4;
#else
jiffies = jiffies_64;
#endif
#define KERNELOFFSET 0x1000
#define KERNELOFFSET 0xd0001000
/* Note: In the following macros, it would be nice to specify only the
vector name and section kind and construct "sym" and "section" using
@ -76,7 +73,7 @@ jiffies = jiffies_64;
SECTIONS
{
. = XCHAL_KSEG_CACHED_VADDR + KERNELOFFSET;
. = KERNELOFFSET;
/* .text section */
_text = .;
@ -160,7 +157,7 @@ SECTIONS
/* Initialization code and data: */
. = ALIGN(1<<XCHAL_MMU_MIN_PTE_PAGE_SIZE);
. = ALIGN(1 << 12);
__init_begin = .;
.init.text : {
_sinittext = .;
@ -224,32 +221,32 @@ SECTIONS
.dummy)
SECTION_VECTOR (_DebugInterruptVector_literal,
.DebugInterruptVector.literal,
XCHAL_INTLEVEL_VECTOR_VADDR(XCHAL_DEBUGLEVEL) - 4,
XCHAL_DEBUG_VECTOR_VADDR - 4,
SIZEOF(.WindowVectors.text),
.WindowVectors.text)
SECTION_VECTOR (_DebugInterruptVector_text,
.DebugInterruptVector.text,
XCHAL_INTLEVEL_VECTOR_VADDR(XCHAL_DEBUGLEVEL),
XCHAL_DEBUG_VECTOR_VADDR,
4,
.DebugInterruptVector.literal)
SECTION_VECTOR (_KernelExceptionVector_literal,
.KernelExceptionVector.literal,
XCHAL_KERNELEXC_VECTOR_VADDR - 4,
XCHAL_KERNEL_VECTOR_VADDR - 4,
SIZEOF(.DebugInterruptVector.text),
.DebugInterruptVector.text)
SECTION_VECTOR (_KernelExceptionVector_text,
.KernelExceptionVector.text,
XCHAL_KERNELEXC_VECTOR_VADDR,
XCHAL_KERNEL_VECTOR_VADDR,
4,
.KernelExceptionVector.literal)
SECTION_VECTOR (_UserExceptionVector_literal,
.UserExceptionVector.literal,
XCHAL_USEREXC_VECTOR_VADDR - 4,
XCHAL_USER_VECTOR_VADDR - 4,
SIZEOF(.KernelExceptionVector.text),
.KernelExceptionVector.text)
SECTION_VECTOR (_UserExceptionVector_text,
.UserExceptionVector.text,
XCHAL_USEREXC_VECTOR_VADDR,
XCHAL_USER_VECTOR_VADDR,
4,
.UserExceptionVector.literal)
SECTION_VECTOR (_DoubleExceptionVector_literal,
@ -264,7 +261,7 @@ SECTIONS
.DoubleExceptionVector.literal)
. = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
. = ALIGN(1<<XCHAL_MMU_MIN_PTE_PAGE_SIZE);
. = ALIGN(1 << 12);
__init_end = .;

3
arch/xtensa/lib/checksum.S
View File

@ -16,8 +16,7 @@
#include <asm/errno.h>
#include <linux/linkage.h>
#define _ASMLANGUAGE
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
/*
* computes a partial checksum, e.g. for TCP/UDP fragments

2
arch/xtensa/lib/memcopy.S
View File

@ -9,7 +9,7 @@
* Copyright (C) 2002 - 2005 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
#include <asm/variant/core.h>
.macro src_b r, w0, w1
#ifdef __XTENSA_EB__

2
arch/xtensa/lib/memset.S
View File

@ -11,7 +11,7 @@
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
#include <asm/variant/core.h>
/*
* void *memset(void *dst, int c, size_t length)

2
arch/xtensa/lib/strncpy_user.S
View File

@ -11,7 +11,7 @@
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
#include <asm/variant/core.h>
#include <linux/errno.h>
/* Load or store instructions that may cause exceptions use the EX macro. */

2
arch/xtensa/lib/strnlen_user.S
View File

@ -11,7 +11,7 @@
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
#include <asm/variant/core.h>
/* Load or store instructions that may cause exceptions use the EX macro. */

2
arch/xtensa/lib/usercopy.S
View File

@ -53,7 +53,7 @@
* a11/ original length
*/
#include <xtensa/coreasm.h>
#include <asm/variant/core.h>
#ifdef __XTENSA_EB__
#define ALIGN(R, W0, W1) src R, W0, W1

10
arch/xtensa/mm/fault.c
View File

@ -21,7 +21,7 @@
#include <asm/system.h>
#include <asm/pgalloc.h>
unsigned long asid_cache = ASID_FIRST_VERSION;
unsigned long asid_cache = ASID_USER_FIRST;
void bad_page_fault(struct pt_regs*, unsigned long, int);
/*
@ -58,10 +58,10 @@ void do_page_fault(struct pt_regs *regs)
return;
}
is_write = (exccause == XCHAL_EXCCAUSE_STORE_CACHE_ATTRIBUTE) ? 1 : 0;
is_exec = (exccause == XCHAL_EXCCAUSE_ITLB_PRIVILEGE ||
exccause == XCHAL_EXCCAUSE_ITLB_MISS ||
exccause == XCHAL_EXCCAUSE_FETCH_CACHE_ATTRIBUTE) ? 1 : 0;
is_write = (exccause == EXCCAUSE_STORE_CACHE_ATTRIBUTE) ? 1 : 0;
is_exec = (exccause == EXCCAUSE_ITLB_PRIVILEGE ||
exccause == EXCCAUSE_ITLB_MISS ||
exccause == EXCCAUSE_FETCH_CACHE_ATTRIBUTE) ? 1 : 0;
#if 0
printk("[%s:%d:%08x:%d:%08x:%s%s]\n", current->comm, current->pid,

6
arch/xtensa/mm/init.c
View File

@ -141,8 +141,8 @@ void __init bootmem_init(void)
if (min_low_pfn > max_pfn)
panic("No memory found!\n");
max_low_pfn = max_pfn < MAX_LOW_MEMORY >> PAGE_SHIFT ?
max_pfn : MAX_LOW_MEMORY >> PAGE_SHIFT;
max_low_pfn = max_pfn < MAX_MEM_PFN >> PAGE_SHIFT ?
max_pfn : MAX_MEM_PFN >> PAGE_SHIFT;
/* Find an area to use for the bootmem bitmap. */
@ -215,7 +215,7 @@ void __init init_mmu (void)
/* Set rasid register to a known value. */
set_rasid_register (ASID_ALL_RESERVED);
set_rasid_register (ASID_USER_FIRST);
/* Set PTEVADDR special register to the start of the page
* table, which is in kernel mappable space (ie. not

349
arch/xtensa/mm/misc.S
View File

@ -19,9 +19,8 @@
#include <linux/linkage.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <xtensa/cacheasm.h>
#include <xtensa/cacheattrasm.h>
#include <asm/asmmacro.h>
#include <asm/cacheasm.h>
/* clear_page (page) */
@ -74,56 +73,16 @@ ENTRY(copy_page)
retw
/*
* void __flush_invalidate_cache_all(void)
*/
ENTRY(__flush_invalidate_cache_all)
entry sp, 16
dcache_writeback_inv_all a2, a3
icache_invalidate_all a2, a3
retw
/*
* void __invalidate_icache_all(void)
*/
ENTRY(__invalidate_icache_all)
entry sp, 16
icache_invalidate_all a2, a3
retw
/*
* void __flush_invalidate_dcache_all(void)
*/
ENTRY(__flush_invalidate_dcache_all)
entry sp, 16
dcache_writeback_inv_all a2, a3
retw
/*
* void __flush_invalidate_cache_range(ulong start, ulong size)
*/
ENTRY(__flush_invalidate_cache_range)
entry sp, 16
mov a4, a2
mov a5, a3
dcache_writeback_inv_region a4, a5, a6
icache_invalidate_region a2, a3, a4
retw
/*
* void __invalidate_icache_page(ulong start)
*/
ENTRY(__invalidate_icache_page)
entry sp, 16
movi a3, PAGE_SIZE
icache_invalidate_region a2, a3, a4
___invalidate_icache_page a2 a3
isync
retw
/*
@ -132,36 +91,10 @@ ENTRY(__invalidate_icache_page)
ENTRY(__invalidate_dcache_page)
entry sp, 16
movi a3, PAGE_SIZE
dcache_invalidate_region a2, a3, a4
retw
/*
* void __invalidate_icache_range(ulong start, ulong size)
*/
___invalidate_dcache_page a2 a3
dsync
ENTRY(__invalidate_icache_range)
entry sp, 16
icache_invalidate_region a2, a3, a4
retw
/*
* void __invalidate_dcache_range(ulong start, ulong size)
*/
ENTRY(__invalidate_dcache_range)
entry sp, 16
dcache_invalidate_region a2, a3, a4
retw
/*
* void __flush_dcache_page(ulong start)
*/
ENTRY(__flush_dcache_page)
entry sp, 16
movi a3, PAGE_SIZE
dcache_writeback_region a2, a3, a4
retw
/*
@ -170,8 +103,36 @@ ENTRY(__flush_dcache_page)
ENTRY(__flush_invalidate_dcache_page)
entry sp, 16
movi a3, PAGE_SIZE
dcache_writeback_inv_region a2, a3, a4
___flush_invalidate_dcache_page a2 a3
dsync
retw
/*
* void __flush_dcache_page(ulong start)
*/
ENTRY(__flush_dcache_page)
entry sp, 16
___flush_dcache_page a2 a3
dsync
retw
/*
* void __invalidate_icache_range(ulong start, ulong size)
*/
ENTRY(__invalidate_icache_range)
entry sp, 16
___invalidate_icache_range a2 a3 a4
isync
retw
/*
@ -180,195 +141,69 @@ ENTRY(__flush_invalidate_dcache_page)
ENTRY(__flush_invalidate_dcache_range)
entry sp, 16
dcache_writeback_inv_region a2, a3, a4
___flush_invalidate_dcache_range a2 a3 a4
dsync
retw
/*
* void __invalidate_dcache_all(void)
* void _flush_dcache_range(ulong start, ulong size)
*/
ENTRY(__flush_dcache_range)
entry sp, 16
___flush_dcache_range a2 a3 a4
dsync
retw
/*
* void _invalidate_dcache_range(ulong start, ulong size)
*/
ENTRY(__invalidate_dcache_range)
entry sp, 16
___invalidate_dcache_range a2 a3 a4
retw
/*
* void _invalidate_icache_all(void)
*/
ENTRY(__invalidate_icache_all)
entry sp, 16
___invalidate_icache_all a2 a3
isync
retw
/*
* void _flush_invalidate_dcache_all(void)
*/
ENTRY(__flush_invalidate_dcache_all)
entry sp, 16
___flush_invalidate_dcache_all a2 a3
dsync
retw
/*
* void _invalidate_dcache_all(void)
*/
ENTRY(__invalidate_dcache_all)
entry sp, 16
dcache_invalidate_all a2, a3
retw
/*
* void __flush_invalidate_dcache_page_phys(ulong start)
*/
ENTRY(__flush_invalidate_dcache_page_phys)
entry sp, 16
movi a3, XCHAL_DCACHE_SIZE
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_DCACHE_LINESIZE
ldct a6, a3
___invalidate_dcache_all a2 a3
dsync
and a6, a6, a4
beq a6, a2, 2f
bgeui a3, 2, 1b
retw
2: diwbi a3, 0
bgeui a3, 2, 1b
retw
ENTRY(check_dcache_low0)
entry sp, 16
movi a3, XCHAL_DCACHE_SIZE / 4
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_DCACHE_LINESIZE
ldct a6, a3
dsync
and a6, a6, a4
beq a6, a2, 2f
bgeui a3, 2, 1b
retw
2: j 2b
ENTRY(check_dcache_high0)
entry sp, 16
movi a5, XCHAL_DCACHE_SIZE / 4
movi a3, XCHAL_DCACHE_SIZE / 2
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_DCACHE_LINESIZE
addi a5, a5, -XCHAL_DCACHE_LINESIZE
ldct a6, a3
dsync
and a6, a6, a4
beq a6, a2, 2f
bgeui a5, 2, 1b
retw
2: j 2b
ENTRY(check_dcache_low1)
entry sp, 16
movi a5, XCHAL_DCACHE_SIZE / 4
movi a3, XCHAL_DCACHE_SIZE * 3 / 4
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_DCACHE_LINESIZE
addi a5, a5, -XCHAL_DCACHE_LINESIZE
ldct a6, a3
dsync
and a6, a6, a4
beq a6, a2, 2f
bgeui a5, 2, 1b
retw
2: j 2b
ENTRY(check_dcache_high1)
entry sp, 16
movi a5, XCHAL_DCACHE_SIZE / 4
movi a3, XCHAL_DCACHE_SIZE
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_DCACHE_LINESIZE
addi a5, a5, -XCHAL_DCACHE_LINESIZE
ldct a6, a3
dsync
and a6, a6, a4
beq a6, a2, 2f
bgeui a5, 2, 1b
retw
2: j 2b
/*
* void __invalidate_icache_page_phys(ulong start)
*/
ENTRY(__invalidate_icache_page_phys)
entry sp, 16
movi a3, XCHAL_ICACHE_SIZE
movi a4, PAGE_MASK | 1
addi a2, a2, 1
1: addi a3, a3, -XCHAL_ICACHE_LINESIZE
lict a6, a3
isync
and a6, a6, a4
beq a6, a2, 2f
bgeui a3, 2, 1b
retw
2: iii a3, 0
bgeui a3, 2, 1b
retw
#if 0
movi a3, XCHAL_DCACHE_WAYS - 1
movi a4, PAGE_SIZE
1: mov a5, a2
add a6, a2, a4
2: diwbi a5, 0
diwbi a5, XCHAL_DCACHE_LINESIZE
diwbi a5, XCHAL_DCACHE_LINESIZE * 2
diwbi a5, XCHAL_DCACHE_LINESIZE * 3
addi a5, a5, XCHAL_DCACHE_LINESIZE * 4
blt a5, a6, 2b
addi a3, a3, -1
addi a2, a2, XCHAL_DCACHE_SIZE / XCHAL_DCACHE_WAYS
bgez a3, 1b
retw
ENTRY(__invalidate_icache_page_index)
entry sp, 16
movi a3, XCHAL_ICACHE_WAYS - 1
movi a4, PAGE_SIZE
1: mov a5, a2
add a6, a2, a4
2: iii a5, 0
iii a5, XCHAL_ICACHE_LINESIZE
iii a5, XCHAL_ICACHE_LINESIZE * 2
iii a5, XCHAL_ICACHE_LINESIZE * 3
addi a5, a5, XCHAL_ICACHE_LINESIZE * 4
blt a5, a6, 2b
addi a3, a3, -1
addi a2, a2, XCHAL_ICACHE_SIZE / XCHAL_ICACHE_WAYS
bgez a3, 2b
retw
#endif

445
arch/xtensa/mm/tlb.c
View File

@ -24,12 +24,12 @@
static inline void __flush_itlb_all (void)
{
int way, index;
int w, i;
for (way = 0; way < XCHAL_ITLB_ARF_WAYS; way++) {
for (index = 0; index < ITLB_ENTRIES_PER_ARF_WAY; index++) {
int entry = way + (index << PAGE_SHIFT);
invalidate_itlb_entry_no_isync (entry);
for (w = 0; w < ITLB_ARF_WAYS; w++) {
for (i = 0; i < (1 << XCHAL_ITLB_ARF_ENTRIES_LOG2); i++) {
int e = w + (i << PAGE_SHIFT);
invalidate_itlb_entry_no_isync(e);
}
}
asm volatile ("isync\n");
@ -37,12 +37,12 @@ static inline void __flush_itlb_all (void)
static inline void __flush_dtlb_all (void)
{
int way, index;
int w, i;
for (way = 0; way < XCHAL_DTLB_ARF_WAYS; way++) {
for (index = 0; index < DTLB_ENTRIES_PER_ARF_WAY; index++) {
int entry = way + (index << PAGE_SHIFT);
invalidate_dtlb_entry_no_isync (entry);
for (w = 0; w < DTLB_ARF_WAYS; w++) {
for (i = 0; i < (1 << XCHAL_DTLB_ARF_ENTRIES_LOG2); i++) {
int e = w + (i << PAGE_SHIFT);
invalidate_dtlb_entry_no_isync(e);
}
}
asm volatile ("isync\n");
@ -63,21 +63,25 @@ void flush_tlb_all (void)
void flush_tlb_mm(struct mm_struct *mm)
{
#if 0
printk("[tlbmm<%lx>]\n", (unsigned long)mm->context);
#endif
if (mm == current->active_mm) {
int flags;
local_save_flags(flags);
get_new_mmu_context(mm, asid_cache);
set_rasid_register(ASID_INSERT(mm->context));
__get_new_mmu_context(mm);
__load_mmu_context(mm);
local_irq_restore(flags);
}
else
mm->context = 0;
}
#define _ITLB_ENTRIES (ITLB_ARF_WAYS << XCHAL_ITLB_ARF_ENTRIES_LOG2)
#define _DTLB_ENTRIES (DTLB_ARF_WAYS << XCHAL_DTLB_ARF_ENTRIES_LOG2)
#if _ITLB_ENTRIES > _DTLB_ENTRIES
# define _TLB_ENTRIES _ITLB_ENTRIES
#else
# define _TLB_ENTRIES _DTLB_ENTRIES
#endif
void flush_tlb_range (struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
@ -93,7 +97,7 @@ void flush_tlb_range (struct vm_area_struct *vma,
#endif
local_save_flags(flags);
if (end-start + (PAGE_SIZE-1) <= SMALLEST_NTLB_ENTRIES << PAGE_SHIFT) {
if (end-start + (PAGE_SIZE-1) <= _TLB_ENTRIES << PAGE_SHIFT) {
int oldpid = get_rasid_register();
set_rasid_register (ASID_INSERT(mm->context));
start &= PAGE_MASK;
@ -111,9 +115,7 @@ void flush_tlb_range (struct vm_area_struct *vma,
set_rasid_register(oldpid);
} else {
get_new_mmu_context(mm, asid_cache);
if (mm == current->active_mm)
set_rasid_register(ASID_INSERT(mm->context));
flush_tlb_mm(mm);
}
local_irq_restore(flags);
}
@ -123,10 +125,6 @@ void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
struct mm_struct* mm = vma->vm_mm;
unsigned long flags;
int oldpid;
#if 0
printk("[tlbpage<%02lx,%08lx>]\n",
(unsigned long)mm->context, page);
#endif
if(mm->context == NO_CONTEXT)
return;
@ -142,404 +140,5 @@ void flush_tlb_page (struct vm_area_struct *vma, unsigned long page)
set_rasid_register(oldpid);
local_irq_restore(flags);
#if 0
flush_tlb_all();
return;
#endif
}
#ifdef DEBUG_TLB
#define USE_ITLB 0
#define USE_DTLB 1
struct way_config_t {
int indicies;
int indicies_log2;
int pgsz_log2;
int arf;
};
static struct way_config_t itlb[XCHAL_ITLB_WAYS] =
{
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY0_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY0_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY0_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY0_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY1_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY1_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY1_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY1_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY2_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY2_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY2_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY2_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY3_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY3_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY3_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY3_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY4_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY4_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY4_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY4_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY5_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY5_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY5_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY5_SET, ARF)
},
{ XCHAL_ITLB_SET(XCHAL_ITLB_WAY6_SET, ENTRIES),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY6_SET, ENTRIES_LOG2),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY6_SET, PAGESZ_LOG2_MIN),
XCHAL_ITLB_SET(XCHAL_ITLB_WAY6_SET, ARF)
}
};
static struct way_config_t dtlb[XCHAL_DTLB_WAYS] =
{
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY0_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY0_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY0_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY0_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY1_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY1_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY1_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY1_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY2_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY2_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY2_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY2_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY3_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY3_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY3_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY3_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY4_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY4_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY4_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY4_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY5_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY5_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY5_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY5_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY6_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY6_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY6_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY6_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY7_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY7_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY7_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY7_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY8_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY8_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY8_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY8_SET, ARF)
},
{ XCHAL_DTLB_SET(XCHAL_DTLB_WAY9_SET, ENTRIES),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY9_SET, ENTRIES_LOG2),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY9_SET, PAGESZ_LOG2_MIN),
XCHAL_DTLB_SET(XCHAL_DTLB_WAY9_SET, ARF)
}
};
/* Total number of entries: */
#define ITLB_TOTAL_ENTRIES \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY0_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY1_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY2_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY3_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY4_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY5_SET, ENTRIES) + \
XCHAL_ITLB_SET(XCHAL_ITLB_WAY6_SET, ENTRIES)
#define DTLB_TOTAL_ENTRIES \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY0_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY1_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY2_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY3_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY4_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY5_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY6_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY7_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY8_SET, ENTRIES) + \
XCHAL_DTLB_SET(XCHAL_DTLB_WAY9_SET, ENTRIES)
typedef struct {
unsigned va;
unsigned pa;
unsigned char asid;
unsigned char ca;
unsigned char way;
unsigned char index;
unsigned char pgsz_log2; /* 0 .. 32 */
unsigned char type; /* 0=ITLB 1=DTLB */
} tlb_dump_entry_t;
/* Return -1 if a precedes b, +1 if a follows b, 0 if same: */
int cmp_tlb_dump_info( tlb_dump_entry_t *a, tlb_dump_entry_t *b )
{
if (a->asid < b->asid) return -1;
if (a->asid > b->asid) return 1;
if (a->va < b->va) return -1;
if (a->va > b->va) return 1;
if (a->pa < b->pa) return -1;
if (a->pa > b->pa) return 1;
if (a->ca < b->ca) return -1;
if (a->ca > b->ca) return 1;
if (a->way < b->way) return -1;
if (a->way > b->way) return 1;
if (a->index < b->index) return -1;
if (a->index > b->index) return 1;
return 0;
}
void sort_tlb_dump_info( tlb_dump_entry_t *t, int n )
{
int i, j;
/* Simple O(n*n) sort: */
for (i = 0; i < n-1; i++)
for (j = i+1; j < n; j++)
if (cmp_tlb_dump_info(t+i, t+j) > 0) {
tlb_dump_entry_t tmp = t[i];
t[i] = t[j];
t[j] = tmp;
}
}
static tlb_dump_entry_t itlb_dump_info[ITLB_TOTAL_ENTRIES];
static tlb_dump_entry_t dtlb_dump_info[DTLB_TOTAL_ENTRIES];
static inline char *way_type (int type)
{
return type ? "autorefill" : "non-autorefill";
}
void print_entry (struct way_config_t *way_info,
unsigned int way,
unsigned int index,
unsigned int virtual,
unsigned int translation)
{
char valid_chr;
unsigned int va, pa, asid, ca;
va = virtual &
~((1 << (way_info->pgsz_log2 + way_info->indicies_log2)) - 1);
asid = virtual & ((1 << XCHAL_MMU_ASID_BITS) - 1);
pa = translation & ~((1 << way_info->pgsz_log2) - 1);
ca = translation & ((1 << XCHAL_MMU_CA_BITS) - 1);
valid_chr = asid ? 'V' : 'I';
/* Compute and incorporate the effect of the index bits on the
* va. It's more useful for kernel debugging, since we always
* want to know the effective va anyway. */
va += index << way_info->pgsz_log2;
printk ("\t[%d,%d] (%c) vpn 0x%.8x ppn 0x%.8x asid 0x%.2x am 0x%x\n",
way, index, valid_chr, va, pa, asid, ca);
}
void print_itlb_entry (struct way_config_t *way_info, int way, int index)
{
print_entry (way_info, way, index,
read_itlb_virtual (way + (index << way_info->pgsz_log2)),
read_itlb_translation (way + (index << way_info->pgsz_log2)));
}
void print_dtlb_entry (struct way_config_t *way_info, int way, int index)
{
print_entry (way_info, way, index,
read_dtlb_virtual (way + (index << way_info->pgsz_log2)),
read_dtlb_translation (way + (index << way_info->pgsz_log2)));
}
void dump_itlb (void)
{
int way, index;
printk ("\nITLB: ways = %d\n", XCHAL_ITLB_WAYS);
for (way = 0; way < XCHAL_ITLB_WAYS; way++) {
printk ("\nWay: %d, Entries: %d, MinPageSize: %d, Type: %s\n",
way, itlb[way].indicies,
itlb[way].pgsz_log2, way_type(itlb[way].arf));
for (index = 0; index < itlb[way].indicies; index++) {
print_itlb_entry(&itlb[way], way, index);
}
}
}
void dump_dtlb (void)
{
int way, index;
printk ("\nDTLB: ways = %d\n", XCHAL_DTLB_WAYS);
for (way = 0; way < XCHAL_DTLB_WAYS; way++) {
printk ("\nWay: %d, Entries: %d, MinPageSize: %d, Type: %s\n",
way, dtlb[way].indicies,
dtlb[way].pgsz_log2, way_type(dtlb[way].arf));
for (index = 0; index < dtlb[way].indicies; index++) {
print_dtlb_entry(&dtlb[way], way, index);
}
}
}
void dump_tlb (tlb_dump_entry_t *tinfo, struct way_config_t *config,
int entries, int ways, int type, int show_invalid)
{
tlb_dump_entry_t *e = tinfo;
int way, i;
/* Gather all info: */
for (way = 0; way < ways; way++) {
struct way_config_t *cfg = config + way;
for (i = 0; i < cfg->indicies; i++) {
unsigned wayindex = way + (i << cfg->pgsz_log2);
unsigned vv = (type ? read_dtlb_virtual (wayindex)
: read_itlb_virtual (wayindex));
unsigned pp = (type ? read_dtlb_translation (wayindex)
: read_itlb_translation (wayindex));
/* Compute and incorporate the effect of the index bits on the
* va. It's more useful for kernel debugging, since we always
* want to know the effective va anyway. */
e->va = (vv & ~((1 << (cfg->pgsz_log2 + cfg->indicies_log2)) - 1));
e->va += (i << cfg->pgsz_log2);
e->pa = (pp & ~((1 << cfg->pgsz_log2) - 1));
e->asid = (vv & ((1 << XCHAL_MMU_ASID_BITS) - 1));
e->ca = (pp & ((1 << XCHAL_MMU_CA_BITS) - 1));
e->way = way;
e->index = i;
e->pgsz_log2 = cfg->pgsz_log2;
e->type = type;
e++;
}
}
#if 1
/* Sort by ASID and VADDR: */
sort_tlb_dump_info (tinfo, entries);
#endif
/* Display all sorted info: */
printk ("\n%cTLB dump:\n", (type ? 'D' : 'I'));
for (e = tinfo, i = 0; i < entries; i++, e++) {
#if 0
if (e->asid == 0 && !show_invalid)
continue;
#endif
printk ("%c way=%d i=%d ASID=%02X V=%08X -> P=%08X CA=%X (%d %cB)\n",
(e->type ? 'D' : 'I'), e->way, e->index,
e->asid, e->va, e->pa, e->ca,
(1 << (e->pgsz_log2 % 10)),
" kMG"[e->pgsz_log2 / 10]
);
}
}
void dump_tlbs2 (int showinv)
{
dump_tlb (itlb_dump_info, itlb, ITLB_TOTAL_ENTRIES, XCHAL_ITLB_WAYS, 0, showinv);
dump_tlb (dtlb_dump_info, dtlb, DTLB_TOTAL_ENTRIES, XCHAL_DTLB_WAYS, 1, showinv);
}
void dump_all_tlbs (void)
{
dump_tlbs2 (1);
}
void dump_valid_tlbs (void)
{
dump_tlbs2 (0);
}
void dump_tlbs (void)
{
dump_itlb();
dump_dtlb();
}
void dump_cache_tag(int dcache, int idx)
{
int w, i, s, e;
unsigned long tag, index;
unsigned long num_lines, num_ways, cache_size, line_size;
num_ways = dcache ? XCHAL_DCACHE_WAYS : XCHAL_ICACHE_WAYS;
cache_size = dcache ? XCHAL_DCACHE_SIZE : XCHAL_ICACHE_SIZE;
line_size = dcache ? XCHAL_DCACHE_LINESIZE : XCHAL_ICACHE_LINESIZE;
num_lines = cache_size / num_ways;
s = 0; e = num_lines;
if (idx >= 0)
e = (s = idx * line_size) + 1;
for (i = s; i < e; i+= line_size) {
printk("\nline %#08x:", i);
for (w = 0; w < num_ways; w++) {
index = w * num_lines + i;
if (dcache)
__asm__ __volatile__("ldct %0, %1\n\t"
: "=a"(tag) : "a"(index));
else
__asm__ __volatile__("lict %0, %1\n\t"
: "=a"(tag) : "a"(index));
printk(" %#010lx", tag);
}
}
printk ("\n");
}
void dump_icache(int index)
{
unsigned long data, addr;
int w, i;
const unsigned long num_ways = XCHAL_ICACHE_WAYS;
const unsigned long cache_size = XCHAL_ICACHE_SIZE;
const unsigned long line_size = XCHAL_ICACHE_LINESIZE;
const unsigned long num_lines = cache_size / num_ways / line_size;
for (w = 0; w < num_ways; w++) {
printk ("\nWay %d", w);
for (i = 0; i < line_size; i+= 4) {
addr = w * num_lines + index * line_size + i;
__asm__ __volatile__("licw %0, %1\n\t"
: "=a"(data) : "a"(addr));
printk(" %#010lx", data);
}
}
printk ("\n");
}
void dump_cache_tags(void)
{
printk("Instruction cache\n");
dump_cache_tag(0, -1);
printk("Data cache\n");
dump_cache_tag(1, -1);
}
#endif

8
arch/xtensa/platform-iss/console.c
View File

@ -25,11 +25,15 @@
#include <asm/uaccess.h>
#include <asm/irq.h>
#include <xtensa/simcall.h>
#include <asm/platform/simcall.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#ifdef SERIAL_INLINE
#define _INLINE_ inline
#endif
#define SERIAL_MAX_NUM_LINES 1
#define SERIAL_TIMER_VALUE (20 * HZ)
@ -191,7 +195,7 @@ static int rs_read_proc(char *page, char **start, off_t off, int count,
}
static const struct tty_operations serial_ops = {
static struct tty_operations serial_ops = {
.open = rs_open,
.close = rs_close,
.write = rs_write,

2
arch/xtensa/platform-iss/network.c
View File

@ -34,7 +34,7 @@
#include <linux/timer.h>
#include <linux/platform_device.h>
#include <xtensa/simcall.h>
#include <asm/platform/simcall.h>
#define DRIVER_NAME "iss-netdev"
#define ETH_MAX_PACKET 1500

153
include/asm-xtensa/asmmacro.h Normal file
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@ -0,0 +1,153 @@
/*
* include/asm-xtensa/asmmacro.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2005 Tensilica Inc.
*/
#ifndef _XTENSA_ASMMACRO_H
#define _XTENSA_ASMMACRO_H
#include <asm/variant/core.h>
/*
* Some little helpers for loops. Use zero-overhead-loops
* where applicable and if supported by the processor.
*
* __loopi ar, at, size, inc
* ar register initialized with the start address
* at scratch register used by macro
* size size immediate value
* inc increment
*
* __loops ar, as, at, inc_log2[, mask_log2][, cond][, ncond]
* ar register initialized with the start address
* as register initialized with the size
* at scratch register use by macro
* inc_log2 increment [in log2]
* mask_log2 mask [in log2]
* cond true condition (used in loop'cond')
* ncond false condition (used in b'ncond')
*
* __loop as
* restart loop. 'as' register must not have been modified!
*
* __endla ar, at, incr
* ar start address (modified)
* as scratch register used by macro
* inc increment
*/
/*
* loop for given size as immediate
*/
.macro __loopi ar, at, size, incr
#if XCHAL_HAVE_LOOPS
movi \at, ((\size + \incr - 1) / (\incr))
loop \at, 99f
#else
addi \at, \ar, \size
98:
#endif
.endm
/*
* loop for given size in register
*/
.macro __loops ar, as, at, incr_log2, mask_log2, cond, ncond
#if XCHAL_HAVE_LOOPS
.ifgt \incr_log2 - 1
addi \at, \as, (1 << \incr_log2) - 1
.ifnc \mask_log2,
extui \at, \at, \incr_log2, \mask_log2
.else
srli \at, \at, \incr_log2
.endif
.endif
loop\cond \at, 99f
#else
.ifnc \mask_log2,
extui \at, \as, \incr_log2, \mask_log2
.else
.ifnc \ncond,
srli \at, \as, \incr_log2
.endif
.endif
.ifnc \ncond,
b\ncond \at, 99f
.endif
.ifnc \mask_log2,
slli \at, \at, \incr_log2
add \at, \ar, \at
.else
add \at, \ar, \as
.endif
#endif
98:
.endm
/*
* loop from ar to ax
*/
.macro __loopt ar, as, at, incr_log2
#if XCHAL_HAVE_LOOPS
sub \at, \as, \ar
.ifgt \incr_log2 - 1
addi \at, \at, (1 << \incr_log2) - 1
srli \at, \at, \incr_log2
.endif
loop \at, 99f
#else
98:
#endif
.endm
/*
* restart loop. registers must be unchanged
*/
.macro __loop as
#if XCHAL_HAVE_LOOPS
loop \as, 99f
#else
98:
#endif
.endm
/*
* end of loop with no increment of the address.
*/
.macro __endl ar, as
#if !XCHAL_HAVE_LOOPS
bltu \ar, \as, 98b
#endif
99:
.endm
/*
* end of loop with increment of the address.
*/
.macro __endla ar, as, incr
addi \ar, \ar, \incr
__endl \ar \as
.endm
#endif /* _XTENSA_ASMMACRO_H */

1
include/asm-xtensa/byteorder.h
View File

@ -11,7 +11,6 @@
#ifndef _XTENSA_BYTEORDER_H
#define _XTENSA_BYTEORDER_H
#include <asm/processor.h>
#include <asm/types.h>
static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)

20
include/asm-xtensa/cache.h
View File

@ -4,7 +4,6 @@
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
* 2 of the License, or (at your option) any later version.
*
* (C) 2001 - 2005 Tensilica Inc.
*/
@ -12,21 +11,14 @@
#ifndef _XTENSA_CACHE_H
#define _XTENSA_CACHE_H
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
#if XCHAL_ICACHE_SIZE > 0
# if (XCHAL_ICACHE_SIZE % (XCHAL_ICACHE_LINESIZE*XCHAL_ICACHE_WAYS*4)) != 0
# error cache configuration outside expected/supported range!
# endif
#endif
#define L1_CACHE_SHIFT XCHAL_DCACHE_LINEWIDTH
#define L1_CACHE_BYTES XCHAL_DCACHE_LINESIZE
#define SMP_CACHE_BYTES L1_CACHE_BYTES
#if XCHAL_DCACHE_SIZE > 0
# if (XCHAL_DCACHE_SIZE % (XCHAL_DCACHE_LINESIZE*XCHAL_DCACHE_WAYS*4)) != 0
# error cache configuration outside expected/supported range!
# endif
#endif
#define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE/XCHAL_DCACHE_WAYS)
#define ICACHE_WAY_SIZE (XCHAL_ICACHE_SIZE/XCHAL_ICACHE_WAYS)
#define L1_CACHE_SHIFT XCHAL_CACHE_LINEWIDTH_MAX
#define L1_CACHE_BYTES XCHAL_CACHE_LINESIZE_MAX
#endif /* _XTENSA_CACHE_H */

177
include/asm-xtensa/cacheasm.h Normal file
View File

@ -0,0 +1,177 @@
/*
* include/asm-xtensa/cacheasm.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2006 Tensilica Inc.
*/
#include <asm/cache.h>
#include <asm/asmmacro.h>
#include <linux/stringify.h>
/*
* Define cache functions as macros here so that they can be used
* by the kernel and boot loader. We should consider moving them to a
* library that can be linked by both.
*
* Locking
*
* ___unlock_dcache_all
* ___unlock_icache_all
*
* Flush and invaldating
*
* ___flush_invalidate_dcache_{all|range|page}
* ___flush_dcache_{all|range|page}
* ___invalidate_dcache_{all|range|page}
* ___invalidate_icache_{all|range|page}
*
*/
.macro __loop_cache_all ar at insn size line_width
movi \ar, 0
__loopi \ar, \at, \size, (4 << (\line_width))
\insn \ar, 0 << (\line_width)
\insn \ar, 1 << (\line_width)
\insn \ar, 2 << (\line_width)
\insn \ar, 3 << (\line_width)
__endla \ar, \at, 4 << (\line_width)
.endm
.macro __loop_cache_range ar as at insn line_width
extui \at, \ar, 0, \line_width
add \as, \as, \at
__loops \ar, \as, \at, \line_width
\insn \ar, 0
__endla \ar, \at, (1 << (\line_width))
.endm
.macro __loop_cache_page ar at insn line_width
__loopi \ar, \at, PAGE_SIZE, 4 << (\line_width)
\insn \ar, 0 << (\line_width)
\insn \ar, 1 << (\line_width)
\insn \ar, 2 << (\line_width)
\insn \ar, 3 << (\line_width)
__endla \ar, \at, 4 << (\line_width)
.endm
#if XCHAL_DCACHE_LINE_LOCKABLE
.macro ___unlock_dcache_all ar at
__loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
.endm
#endif
#if XCHAL_ICACHE_LINE_LOCKABLE
.macro ___unlock_icache_all ar at
__loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE XCHAL_ICACHE_LINEWIDTH
.endm
#endif
.macro ___flush_invalidate_dcache_all ar at
__loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___flush_dcache_all ar at
__loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_dcache_all ar at
__loop_cache_all \ar \at dii __stringify(DCACHE_WAY_SIZE) \
XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_icache_all ar at
__loop_cache_all \ar \at iii __stringify(ICACHE_WAY_SIZE) \
XCHAL_ICACHE_LINEWIDTH
.endm
.macro ___flush_invalidate_dcache_range ar as at
__loop_cache_range \ar \as \at dhwbi XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___flush_dcache_range ar as at
__loop_cache_range \ar \as \at dhwb XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_dcache_range ar as at
__loop_cache_range \ar \as \at dhi XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_icache_range ar as at
__loop_cache_range \ar \as \at ihi XCHAL_ICACHE_LINEWIDTH
.endm
.macro ___flush_invalidate_dcache_page ar as
__loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___flush_dcache_page ar as
__loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_dcache_page ar as
__loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH
.endm
.macro ___invalidate_icache_page ar as
__loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH
.endm

2
include/asm-xtensa/cacheflush.h
View File

@ -5,7 +5,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* (C) 2001 - 2005 Tensilica Inc.
* (C) 2001 - 2006 Tensilica Inc.
*/
#ifndef _XTENSA_CACHEFLUSH_H

2
include/asm-xtensa/checksum.h
View File

@ -12,7 +12,7 @@
#define _XTENSA_CHECKSUM_H
#include <linux/in6.h>
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
/*
* computes the checksum of a memory block at buff, length len,

13
include/asm-xtensa/coprocessor.h
View File

@ -11,7 +11,16 @@
#ifndef _XTENSA_COPROCESSOR_H
#define _XTENSA_COPROCESSOR_H
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
#include <asm/variant/tie.h>
#if !XCHAL_HAVE_CP
#define XTENSA_CP_EXTRA_OFFSET 0
#define XTENSA_CP_EXTRA_ALIGN 1 /* must be a power of 2 */
#define XTENSA_CP_EXTRA_SIZE 0
#else
#define XTOFS(last_start,last_size,align) \
((last_start+last_size+align-1) & -align)
@ -67,4 +76,6 @@ extern void save_coprocessor_registers(void*, int);
# endif
#endif
#endif
#endif /* _XTENSA_COPROCESSOR_H */

5
include/asm-xtensa/dma.h
View File

@ -12,7 +12,6 @@
#define _XTENSA_DMA_H
#include <asm/io.h> /* need byte IO */
#include <xtensa/config/core.h>
/*
* This is only to be defined if we have PC-like DMA.
@ -44,7 +43,9 @@
* enters another area, and virt_to_phys() may not return
* the value desired).
*/
#define MAX_DMA_ADDRESS (PAGE_OFFSET + XCHAL_KSEG_CACHED_SIZE - 1)
#define MAX_DMA_ADDRESS (PAGE_OFFSET + XCHAL_KIO_SIZE - 1)
/* Reserve and release a DMA channel */
extern int request_dma(unsigned int dmanr, const char * device_id);

9
include/asm-xtensa/elf.h
View File

@ -13,9 +13,8 @@
#ifndef _XTENSA_ELF_H
#define _XTENSA_ELF_H
#include <asm/variant/core.h>
#include <asm/ptrace.h>
#include <asm/coprocessor.h>
#include <xtensa/config/core.h>
/* Xtensa processor ELF architecture-magic number */
@ -118,11 +117,15 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
* using memcpy(). But we do allow space for such alignment,
* to allow optimizations of layout and copying.
*/
#if 0
#define TOTAL_FPREGS_SIZE \
(4 + XTENSA_CPE_LTABLE_SIZE + XTENSA_CP_EXTRA_SIZE)
#define ELF_NFPREG \
((TOTAL_FPREGS_SIZE + sizeof(elf_fpreg_t) - 1) / sizeof(elf_fpreg_t))
#else
#define TOTAL_FPREGS_SIZE 0
#define ELF_NFPREG 0
#endif
typedef unsigned int elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

252
include/asm-xtensa/fixmap.h
View File

@ -1,252 +0,0 @@
/*
* include/asm-xtensa/fixmap.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
*/
#ifndef _XTENSA_FIXMAP_H
#define _XTENSA_FIXMAP_H
#include <asm/processor.h>
#ifdef CONFIG_MMU
/*
* Here we define all the compile-time virtual addresses.
*/
#if XCHAL_SEG_MAPPABLE_VADDR != 0
# error "Current port requires virtual user space starting at 0"
#endif
#if XCHAL_SEG_MAPPABLE_SIZE < 0x80000000
# error "Current port requires at least 0x8000000 bytes for user space"
#endif
/* Verify instruction/data ram/rom and xlmi don't overlay vmalloc space. */
#define __IN_VMALLOC(addr) \
(((addr) >= VMALLOC_START) && ((addr) < VMALLOC_END))
#define __SPAN_VMALLOC(start,end) \
(((start) < VMALLOC_START) && ((end) >= VMALLOC_END))
#define INSIDE_VMALLOC(start,end) \
(__IN_VMALLOC((start)) || __IN_VMALLOC(end) || __SPAN_VMALLOC((start),(end)))
#if XCHAL_NUM_INSTROM
# if XCHAL_NUM_INSTROM == 1
# if INSIDE_VMALLOC(XCHAL_INSTROM0_VADDR,XCHAL_INSTROM0_VADDR+XCHAL_INSTROM0_SIZE)
# error vmalloc range conflicts with instrom0
# endif
# endif
# if XCHAL_NUM_INSTROM == 2
# if INSIDE_VMALLOC(XCHAL_INSTROM1_VADDR,XCHAL_INSTROM1_VADDR+XCHAL_INSTROM1_SIZE)
# error vmalloc range conflicts with instrom1
# endif
# endif
#endif
#if XCHAL_NUM_INSTRAM
# if XCHAL_NUM_INSTRAM == 1
# if INSIDE_VMALLOC(XCHAL_INSTRAM0_VADDR,XCHAL_INSTRAM0_VADDR+XCHAL_INSTRAM0_SIZE)
# error vmalloc range conflicts with instram0
# endif
# endif
# if XCHAL_NUM_INSTRAM == 2
# if INSIDE_VMALLOC(XCHAL_INSTRAM1_VADDR,XCHAL_INSTRAM1_VADDR+XCHAL_INSTRAM1_SIZE)
# error vmalloc range conflicts with instram1
# endif
# endif
#endif
#if XCHAL_NUM_DATAROM
# if XCHAL_NUM_DATAROM == 1
# if INSIDE_VMALLOC(XCHAL_DATAROM0_VADDR,XCHAL_DATAROM0_VADDR+XCHAL_DATAROM0_SIZE)
# error vmalloc range conflicts with datarom0
# endif
# endif
# if XCHAL_NUM_DATAROM == 2
# if INSIDE_VMALLOC(XCHAL_DATAROM1_VADDR,XCHAL_DATAROM1_VADDR+XCHAL_DATAROM1_SIZE)
# error vmalloc range conflicts with datarom1
# endif
# endif
#endif
#if XCHAL_NUM_DATARAM
# if XCHAL_NUM_DATARAM == 1
# if INSIDE_VMALLOC(XCHAL_DATARAM0_VADDR,XCHAL_DATARAM0_VADDR+XCHAL_DATARAM0_SIZE)
# error vmalloc range conflicts with dataram0
# endif
# endif
# if XCHAL_NUM_DATARAM == 2
# if INSIDE_VMALLOC(XCHAL_DATARAM1_VADDR,XCHAL_DATARAM1_VADDR+XCHAL_DATARAM1_SIZE)
# error vmalloc range conflicts with dataram1
# endif
# endif
#endif
#if XCHAL_NUM_XLMI
# if XCHAL_NUM_XLMI == 1
# if INSIDE_VMALLOC(XCHAL_XLMI0_VADDR,XCHAL_XLMI0_VADDR+XCHAL_XLMI0_SIZE)
# error vmalloc range conflicts with xlmi0
# endif
# endif
# if XCHAL_NUM_XLMI == 2
# if INSIDE_VMALLOC(XCHAL_XLMI1_VADDR,XCHAL_XLMI1_VADDR+XCHAL_XLMI1_SIZE)
# error vmalloc range conflicts with xlmi1
# endif
# endif
#endif
#if (XCHAL_NUM_INSTROM > 2) || \
(XCHAL_NUM_INSTRAM > 2) || \
(XCHAL_NUM_DATARAM > 2) || \
(XCHAL_NUM_DATAROM > 2) || \
(XCHAL_NUM_XLMI > 2)
# error Insufficient checks on vmalloc above for more than 2 devices
#endif
/*
* USER_VM_SIZE does not necessarily equal TASK_SIZE. We bumped
* TASK_SIZE down to 0x4000000 to simplify the handling of windowed
* call instructions (currently limited to a range of 1 GByte). User
* tasks may very well reclaim the VM space from 0x40000000 to
* 0x7fffffff in the future, so we do not want the kernel becoming
* accustomed to having any of its stuff (e.g., page tables) in this
* region. This VM region is no-man's land for now.
*/
#define USER_VM_START XCHAL_SEG_MAPPABLE_VADDR
#define USER_VM_SIZE 0x80000000
/* Size of page table: */
#define PGTABLE_SIZE_BITS (32 - XCHAL_MMU_MIN_PTE_PAGE_SIZE + 2)
#define PGTABLE_SIZE (1L << PGTABLE_SIZE_BITS)
/* All kernel-mappable space: */
#define KERNEL_ALLMAP_START (USER_VM_START + USER_VM_SIZE)
#define KERNEL_ALLMAP_SIZE (XCHAL_SEG_MAPPABLE_SIZE - KERNEL_ALLMAP_START)
/* Carve out page table at start of kernel-mappable area: */
#if KERNEL_ALLMAP_SIZE < PGTABLE_SIZE
#error "Gimme some space for page table!"
#endif
#define PGTABLE_START KERNEL_ALLMAP_START
/* Remaining kernel-mappable space: */
#define KERNEL_MAPPED_START (KERNEL_ALLMAP_START + PGTABLE_SIZE)
#define KERNEL_MAPPED_SIZE (KERNEL_ALLMAP_SIZE - PGTABLE_SIZE)
#if KERNEL_MAPPED_SIZE < 0x01000000 /* 16 MB is arbitrary for now */
# error "Shouldn't the kernel have at least *some* mappable space?"
#endif
#define MAX_LOW_MEMORY XCHAL_KSEG_CACHED_SIZE
#endif
/*
* Some constants used elsewhere, but perhaps only in Xtensa header
* files, so maybe we can get rid of some and access compile-time HAL
* directly...
*
* Note: We assume that system RAM is located at the very start of the
* kernel segments !!
*/
#define KERNEL_VM_LOW XCHAL_KSEG_CACHED_VADDR
#define KERNEL_VM_HIGH XCHAL_KSEG_BYPASS_VADDR
#define KERNEL_SPACE XCHAL_KSEG_CACHED_VADDR
/*
* Returns the physical/virtual addresses of the kernel space
* (works with the cached kernel segment only, which is the
* one normally used for kernel operation).
*/
/* PHYSICAL BYPASS CACHED
*
* bypass vaddr bypass paddr * cached vaddr
* cached vaddr cached paddr bypass vaddr *
* bypass paddr * bypass vaddr cached vaddr
* cached paddr * bypass vaddr cached vaddr
* other * * *
*/
#define PHYSADDR(a) \
(((unsigned)(a) >= XCHAL_KSEG_BYPASS_VADDR \
&& (unsigned)(a) < XCHAL_KSEG_BYPASS_VADDR + XCHAL_KSEG_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_BYPASS_VADDR + XCHAL_KSEG_BYPASS_PADDR : \
((unsigned)(a) >= XCHAL_KSEG_CACHED_VADDR \
&& (unsigned)(a) < XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_CACHED_VADDR + XCHAL_KSEG_CACHED_PADDR : \
(unsigned)(a))
#define BYPASS_ADDR(a) \
(((unsigned)(a) >= XCHAL_KSEG_BYPASS_PADDR \
&& (unsigned)(a) < XCHAL_KSEG_BYPASS_PADDR + XCHAL_KSEG_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_BYPASS_PADDR + XCHAL_KSEG_BYPASS_VADDR : \
((unsigned)(a) >= XCHAL_KSEG_CACHED_PADDR \
&& (unsigned)(a) < XCHAL_KSEG_CACHED_PADDR + XCHAL_KSEG_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_CACHED_PADDR + XCHAL_KSEG_BYPASS_VADDR : \
((unsigned)(a) >= XCHAL_KSEG_CACHED_VADDR \
&& (unsigned)(a) < XCHAL_KSEG_CACHED_VADDR+XCHAL_KSEG_CACHED_SIZE)? \
(unsigned)(a) - XCHAL_KSEG_CACHED_VADDR+XCHAL_KSEG_BYPASS_VADDR: \
(unsigned)(a))
#define CACHED_ADDR(a) \
(((unsigned)(a) >= XCHAL_KSEG_BYPASS_PADDR \
&& (unsigned)(a) < XCHAL_KSEG_BYPASS_PADDR + XCHAL_KSEG_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_BYPASS_PADDR + XCHAL_KSEG_CACHED_VADDR : \
((unsigned)(a) >= XCHAL_KSEG_CACHED_PADDR \
&& (unsigned)(a) < XCHAL_KSEG_CACHED_PADDR + XCHAL_KSEG_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_CACHED_PADDR + XCHAL_KSEG_CACHED_VADDR : \
((unsigned)(a) >= XCHAL_KSEG_BYPASS_VADDR \
&& (unsigned)(a) < XCHAL_KSEG_BYPASS_VADDR+XCHAL_KSEG_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KSEG_BYPASS_VADDR+XCHAL_KSEG_CACHED_VADDR : \
(unsigned)(a))
#define PHYSADDR_IO(a) \
(((unsigned)(a) >= XCHAL_KIO_BYPASS_VADDR \
&& (unsigned)(a) < XCHAL_KIO_BYPASS_VADDR + XCHAL_KIO_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_BYPASS_VADDR + XCHAL_KIO_BYPASS_PADDR : \
((unsigned)(a) >= XCHAL_KIO_CACHED_VADDR \
&& (unsigned)(a) < XCHAL_KIO_CACHED_VADDR + XCHAL_KIO_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_CACHED_VADDR + XCHAL_KIO_CACHED_PADDR : \
(unsigned)(a))
#define BYPASS_ADDR_IO(a) \
(((unsigned)(a) >= XCHAL_KIO_BYPASS_PADDR \
&& (unsigned)(a) < XCHAL_KIO_BYPASS_PADDR + XCHAL_KIO_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_BYPASS_PADDR + XCHAL_KIO_BYPASS_VADDR : \
((unsigned)(a) >= XCHAL_KIO_CACHED_PADDR \
&& (unsigned)(a) < XCHAL_KIO_CACHED_PADDR + XCHAL_KIO_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_CACHED_PADDR + XCHAL_KIO_BYPASS_VADDR : \
((unsigned)(a) >= XCHAL_KIO_CACHED_VADDR \
&& (unsigned)(a) < XCHAL_KIO_CACHED_VADDR + XCHAL_KIO_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_CACHED_VADDR + XCHAL_KIO_BYPASS_VADDR : \
(unsigned)(a))
#define CACHED_ADDR_IO(a) \
(((unsigned)(a) >= XCHAL_KIO_BYPASS_PADDR \
&& (unsigned)(a) < XCHAL_KIO_BYPASS_PADDR + XCHAL_KIO_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_BYPASS_PADDR + XCHAL_KIO_CACHED_VADDR : \
((unsigned)(a) >= XCHAL_KIO_CACHED_PADDR \
&& (unsigned)(a) < XCHAL_KIO_CACHED_PADDR + XCHAL_KIO_CACHED_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_CACHED_PADDR + XCHAL_KIO_CACHED_VADDR : \
((unsigned)(a) >= XCHAL_KIO_BYPASS_VADDR \
&& (unsigned)(a) < XCHAL_KIO_BYPASS_VADDR + XCHAL_KIO_BYPASS_SIZE) ? \
(unsigned)(a) - XCHAL_KIO_BYPASS_VADDR + XCHAL_KIO_CACHED_VADDR : \
(unsigned)(a))
#endif /* _XTENSA_ADDRSPACE_H */

64
include/asm-xtensa/io.h
View File

@ -1,5 +1,5 @@
/*
* linux/include/asm-xtensa/io.h
* include/asm-xtensa/io.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
@ -15,10 +15,11 @@
#include <asm/byteorder.h>
#include <linux/types.h>
#include <asm/fixmap.h>
#define _IO_BASE 0
#define XCHAL_KIO_CACHED_VADDR 0xf0000000
#define XCHAL_KIO_BYPASS_VADDR 0xf8000000
#define XCHAL_KIO_PADDR 0xf0000000
#define XCHAL_KIO_SIZE 0x08000000
/*
* swap functions to change byte order from little-endian to big-endian and
@ -42,40 +43,43 @@ static inline unsigned int _swapl (unsigned int v)
static inline unsigned long virt_to_phys(volatile void * address)
{
return PHYSADDR((unsigned long)address);
return __pa(address);
}
static inline void * phys_to_virt(unsigned long address)
{
return (void*) CACHED_ADDR(address);
return __va(address);
}
/*
* IO bus memory addresses are also 1:1 with the physical address
* virt_to_bus and bus_to_virt are deprecated.
*/
static inline unsigned long virt_to_bus(volatile void * address)
{
return PHYSADDR((unsigned long)address);
}
static inline void * bus_to_virt (unsigned long address)
{
return (void *) CACHED_ADDR(address);
}
#define virt_to_bus(x) virt_to_phys(x)
#define bus_to_virt(x) phys_to_virt(x)
/*
* Change "struct page" to physical address.
* Return the virtual (cached) address for the specified bus memory.
* Note that we currently don't support any address outside the KIO segment.
*/
static inline void *ioremap(unsigned long offset, unsigned long size)
{
return (void *) CACHED_ADDR_IO(offset);
if (offset >= XCHAL_KIO_PADDR
&& offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
else
BUG();
}
static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
{
return (void *) BYPASS_ADDR_IO(offset);
if (offset >= XCHAL_KIO_PADDR
&& offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
else
BUG();
}
static inline void iounmap(void *addr)
@ -121,9 +125,6 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
*(__force volatile __u32 *)(addr) = b;
}
/* These are the definitions for the x86 IO instructions
* inb/inw/inl/outb/outw/outl, the "string" versions
* insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
@ -131,11 +132,11 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
* The macros don't do byte-swapping.
*/
#define inb(port) readb((u8 *)((port)+_IO_BASE))
#define outb(val, port) writeb((val),(u8 *)((unsigned long)(port)+_IO_BASE))
#define inw(port) readw((u16 *)((port)+_IO_BASE))
#define outw(val, port) writew((val),(u16 *)((unsigned long)(port)+_IO_BASE))
#define inl(port) readl((u32 *)((port)+_IO_BASE))
#define inb(port) readb((u8 *)((port)))
#define outb(val, port) writeb((val),(u8 *)((unsigned long)(port)))
#define inw(port) readw((u16 *)((port)))
#define outw(val, port) writew((val),(u16 *)((unsigned long)(port)))
#define inl(port) readl((u32 *)((port)))
#define outl(val, port) writel((val),(u32 *)((unsigned long)(port)))
#define inb_p(port) inb((port))
@ -180,14 +181,13 @@ extern void outsl (unsigned long port, const void *src, unsigned long count);
/*
* * Convert a physical pointer to a virtual kernel pointer for /dev/mem
* * access
* */
* Convert a physical pointer to a virtual kernel pointer for /dev/mem access
*/
#define xlate_dev_mem_ptr(p) __va(p)
/*
* * Convert a virtual cached pointer to an uncached pointer
* */
* Convert a virtual cached pointer to an uncached pointer
*/
#define xlate_dev_kmem_ptr(p) p

8
include/asm-xtensa/irq.h
View File

@ -12,8 +12,7 @@
#define _XTENSA_IRQ_H
#include <asm/platform/hardware.h>
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
#ifndef PLATFORM_NR_IRQS
# define PLATFORM_NR_IRQS 0
@ -27,10 +26,5 @@ static __inline__ int irq_canonicalize(int irq)
}
struct irqaction;
#if 0 // FIXME
extern void disable_irq_nosync(unsigned int);
extern void disable_irq(unsigned int);
extern void enable_irq(unsigned int);
#endif
#endif /* _XTENSA_IRQ_H */

269
include/asm-xtensa/mmu_context.h
View File

@ -16,187 +16,32 @@
#include <linux/stringify.h>
#include <asm/pgtable.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
/*
* Linux was ported to Xtensa assuming all auto-refill ways in set 0
* had the same properties (a very likely assumption). Multiple sets
* of auto-refill ways will still work properly, but not as optimally
* as the Xtensa designer may have assumed.
*
* We make this case a hard #error, killing the kernel build, to alert
* the developer to this condition (which is more likely an error).
* You super-duper clever developers can change it to a warning or
* remove it altogether if you think you know what you're doing. :)
*/
#define XCHAL_MMU_ASID_BITS 8
#if (XCHAL_HAVE_TLBS != 1)
# error "Linux must have an MMU!"
#endif
#if ((XCHAL_ITLB_ARF_WAYS == 0) || (XCHAL_DTLB_ARF_WAYS == 0))
# error "MMU must have auto-refill ways"
#endif
#if ((XCHAL_ITLB_ARF_SETS != 1) || (XCHAL_DTLB_ARF_SETS != 1))
# error Linux may not use all auto-refill ways as efficiently as you think
#endif
#if (XCHAL_MMU_MAX_PTE_PAGE_SIZE != XCHAL_MMU_MIN_PTE_PAGE_SIZE)
# error Only one page size allowed!
#endif
extern unsigned long asid_cache;
extern pgd_t *current_pgd;
/*
* Define the number of entries per auto-refill way in set 0 of both I and D
* TLBs. We deal only with set 0 here (an assumption further explained in
* assertions.h). Also, define the total number of ARF entries in both TLBs.
*/
#define ITLB_ENTRIES_PER_ARF_WAY (XCHAL_ITLB_SET(XCHAL_ITLB_ARF_SET0,ENTRIES))
#define DTLB_ENTRIES_PER_ARF_WAY (XCHAL_DTLB_SET(XCHAL_DTLB_ARF_SET0,ENTRIES))
#define ITLB_ENTRIES \
(ITLB_ENTRIES_PER_ARF_WAY * (XCHAL_ITLB_SET(XCHAL_ITLB_ARF_SET0,WAYS)))
#define DTLB_ENTRIES \
(DTLB_ENTRIES_PER_ARF_WAY * (XCHAL_DTLB_SET(XCHAL_DTLB_ARF_SET0,WAYS)))
/*
* SMALLEST_NTLB_ENTRIES is the smaller of ITLB_ENTRIES and DTLB_ENTRIES.
* In practice, they are probably equal. This macro simplifies function
* flush_tlb_range().
*/
#if (DTLB_ENTRIES < ITLB_ENTRIES)
# define SMALLEST_NTLB_ENTRIES DTLB_ENTRIES
#else
# define SMALLEST_NTLB_ENTRIES ITLB_ENTRIES
#endif
/*
* asid_cache tracks only the ASID[USER_RING] field of the RASID special
* register, which is the current user-task asid allocation value.
* mm->context has the same meaning. When it comes time to write the
* asid_cache or mm->context values to the RASID special register, we first
* shift the value left by 8, then insert the value.
* ASID[0] always contains the kernel's asid value, and we reserve three
* other asid values that we never assign to user tasks.
*/
#define ASID_INC 0x1
#define ASID_MASK ((1 << XCHAL_MMU_ASID_BITS) - 1)
/*
* XCHAL_MMU_ASID_INVALID is a configurable Xtensa processor constant
* indicating invalid address space. XCHAL_MMU_ASID_KERNEL is a configurable
* Xtensa processor constant indicating the kernel address space. They can
* be arbitrary values.
*
* We identify three more unique, reserved ASID values to use in the unused
* ring positions. No other user process will be assigned these reserved
* ASID values.
*
* For example, given that
*
* XCHAL_MMU_ASID_INVALID == 0
* XCHAL_MMU_ASID_KERNEL == 1
*
* the following maze of #if statements would generate
*
* ASID_RESERVED_1 == 2
* ASID_RESERVED_2 == 3
* ASID_RESERVED_3 == 4
* ASID_FIRST_NONRESERVED == 5
*/
#if (XCHAL_MMU_ASID_INVALID != XCHAL_MMU_ASID_KERNEL + 1)
# define ASID_RESERVED_1 ((XCHAL_MMU_ASID_KERNEL + 1) & ASID_MASK)
#else
# define ASID_RESERVED_1 ((XCHAL_MMU_ASID_KERNEL + 2) & ASID_MASK)
#endif
#if (XCHAL_MMU_ASID_INVALID != ASID_RESERVED_1 + 1)
# define ASID_RESERVED_2 ((ASID_RESERVED_1 + 1) & ASID_MASK)
#else
# define ASID_RESERVED_2 ((ASID_RESERVED_1 + 2) & ASID_MASK)
#endif
#if (XCHAL_MMU_ASID_INVALID != ASID_RESERVED_2 + 1)
# define ASID_RESERVED_3 ((ASID_RESERVED_2 + 1) & ASID_MASK)
#else
# define ASID_RESERVED_3 ((ASID_RESERVED_2 + 2) & ASID_MASK)
#endif
#if (XCHAL_MMU_ASID_INVALID != ASID_RESERVED_3 + 1)
# define ASID_FIRST_NONRESERVED ((ASID_RESERVED_3 + 1) & ASID_MASK)
#else
# define ASID_FIRST_NONRESERVED ((ASID_RESERVED_3 + 2) & ASID_MASK)
#endif
#define ASID_ALL_RESERVED ( ((ASID_RESERVED_1) << 24) + \
((ASID_RESERVED_2) << 16) + \
((ASID_RESERVED_3) << 8) + \
((XCHAL_MMU_ASID_KERNEL)) )
/*
* NO_CONTEXT is the invalid ASID value that we don't ever assign to
* any user or kernel context. NO_CONTEXT is a better mnemonic than
* XCHAL_MMU_ASID_INVALID, so we use it in code instead.
* any user or kernel context.
*
* 0 invalid
* 1 kernel
* 2 reserved
* 3 reserved
* 4...255 available
*/
#define NO_CONTEXT XCHAL_MMU_ASID_INVALID
#if (KERNEL_RING != 0)
# error The KERNEL_RING really should be zero.
#endif
#if (USER_RING >= XCHAL_MMU_RINGS)
# error USER_RING cannot be greater than the highest numbered ring.
#endif
#if (USER_RING == KERNEL_RING)
# error The user and kernel rings really should not be equal.
#endif
#if (USER_RING == 1)
#define ASID_INSERT(x) ( ((ASID_RESERVED_1) << 24) + \
((ASID_RESERVED_2) << 16) + \
(((x) & (ASID_MASK)) << 8) + \
((XCHAL_MMU_ASID_KERNEL)) )
#elif (USER_RING == 2)
#define ASID_INSERT(x) ( ((ASID_RESERVED_1) << 24) + \
(((x) & (ASID_MASK)) << 16) + \
((ASID_RESERVED_2) << 8) + \
((XCHAL_MMU_ASID_KERNEL)) )
#elif (USER_RING == 3)
#define ASID_INSERT(x) ( (((x) & (ASID_MASK)) << 24) + \
((ASID_RESERVED_1) << 16) + \
((ASID_RESERVED_2) << 8) + \
((XCHAL_MMU_ASID_KERNEL)) )
#else
#error Goofy value for USER_RING
#endif /* USER_RING == 1 */
/*
* All unused by hardware upper bits will be considered
* as a software asid extension.
*/
#define ASID_VERSION_MASK ((unsigned long)~(ASID_MASK|(ASID_MASK-1)))
#define ASID_FIRST_VERSION \
((unsigned long)(~ASID_VERSION_MASK) + 1 + ASID_FIRST_NONRESERVED)
#define NO_CONTEXT 0
#define ASID_USER_FIRST 4
#define ASID_MASK ((1 << XCHAL_MMU_ASID_BITS) - 1)
#define ASID_INSERT(x) (0x03020001 | (((x) & ASID_MASK) << 8))
static inline void set_rasid_register (unsigned long val)
{
@ -207,67 +52,28 @@ static inline void set_rasid_register (unsigned long val)
static inline unsigned long get_rasid_register (void)
{
unsigned long tmp;
__asm__ __volatile__ (" rsr %0, "__stringify(RASID)"\n\t" : "=a" (tmp));
__asm__ __volatile__ (" rsr %0,"__stringify(RASID)"\n\t" : "=a" (tmp));
return tmp;
}
#if ((XCHAL_MMU_ASID_INVALID == 0) && (XCHAL_MMU_ASID_KERNEL == 1))
static inline void
get_new_mmu_context(struct mm_struct *mm, unsigned long asid)
__get_new_mmu_context(struct mm_struct *mm)
{
extern void flush_tlb_all(void);
if (! ((asid += ASID_INC) & ASID_MASK) ) {
if (! (++asid_cache & ASID_MASK) ) {
flush_tlb_all(); /* start new asid cycle */
if (!asid) /* fix version if needed */
asid = ASID_FIRST_VERSION - ASID_FIRST_NONRESERVED;
asid += ASID_FIRST_NONRESERVED;
asid_cache += ASID_USER_FIRST;
}
mm->context = asid_cache = asid;
}
#else
#warning ASID_{INVALID,KERNEL} values impose non-optimal get_new_mmu_context implementation
/* XCHAL_MMU_ASID_INVALID == 0 and XCHAL_MMU_ASID_KERNEL ==1 are
really the best, but if you insist... */
static inline int validate_asid (unsigned long asid)
{
switch (asid) {
case XCHAL_MMU_ASID_INVALID:
case XCHAL_MMU_ASID_KERNEL:
case ASID_RESERVED_1:
case ASID_RESERVED_2:
case ASID_RESERVED_3:
return 0; /* can't use these values as ASIDs */
}
return 1; /* valid */
mm->context = asid_cache;
}
static inline void
get_new_mmu_context(struct mm_struct *mm, unsigned long asid)
__load_mmu_context(struct mm_struct *mm)
{
extern void flush_tlb_all(void);
while (1) {
asid += ASID_INC;
if ( ! (asid & ASID_MASK) ) {
flush_tlb_all(); /* start new asid cycle */
if (!asid) /* fix version if needed */
asid = ASID_FIRST_VERSION - ASID_FIRST_NONRESERVED;
asid += ASID_FIRST_NONRESERVED;
break; /* no need to validate here */
}
if (validate_asid (asid & ASID_MASK))
break;
}
mm->context = asid_cache = asid;
set_rasid_register(ASID_INSERT(mm->context));
invalidate_page_directory();
}
#endif
/*
* Initialize the context related info for a new mm_struct
* instance.
@ -280,6 +86,20 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
return 0;
}
/*
* After we have set current->mm to a new value, this activates
* the context for the new mm so we see the new mappings.
*/
static inline void
activate_mm(struct mm_struct *prev, struct mm_struct *next)
{
/* Unconditionally get a new ASID. */
__get_new_mmu_context(next);
__load_mmu_context(next);
}
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
@ -287,11 +107,10 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
/* Check if our ASID is of an older version and thus invalid */
if ((next->context ^ asid) & ASID_VERSION_MASK)
get_new_mmu_context(next, asid);
if (next->context == NO_CONTEXT || ((next->context^asid) & ~ASID_MASK))
__get_new_mmu_context(next);
set_rasid_register (ASID_INSERT(next->context));
invalidate_page_directory();
__load_mmu_context(next);
}
#define deactivate_mm(tsk, mm) do { } while(0)
@ -302,20 +121,6 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
*/
static inline void destroy_context(struct mm_struct *mm)
{
/* Nothing to do. */
}
/*
* After we have set current->mm to a new value, this activates
* the context for the new mm so we see the new mappings.
*/
static inline void
activate_mm(struct mm_struct *prev, struct mm_struct *next)
{
/* Unconditionally get a new ASID. */
get_new_mmu_context(next, asid_cache);
set_rasid_register (ASID_INSERT(next->context));
invalidate_page_directory();
}

10
include/asm-xtensa/page.h
View File

@ -15,18 +15,24 @@
#include <asm/processor.h>
#define XCHAL_KSEG_CACHED_VADDR 0xd0000000
#define XCHAL_KSEG_BYPASS_VADDR 0xd8000000
#define XCHAL_KSEG_PADDR 0x00000000
#define XCHAL_KSEG_SIZE 0x08000000
/*
* PAGE_SHIFT determines the page size
* PAGE_ALIGN(x) aligns the pointer to the (next) page boundary
*/
#define PAGE_SHIFT XCHAL_MMU_MIN_PTE_PAGE_SIZE
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE - 1) & PAGE_MASK)
#define DCACHE_WAY_SIZE (XCHAL_DCACHE_SIZE / XCHAL_DCACHE_WAYS)
#define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR
#define MAX_MEM_PFN XCHAL_KSEG_SIZE
#define PGTABLE_START 0x80000000
#ifdef __ASSEMBLY__

2
include/asm-xtensa/param.h
View File

@ -11,7 +11,7 @@
#ifndef _XTENSA_PARAM_H
#define _XTENSA_PARAM_H
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
#ifdef __KERNEL__
# define HZ 100 /* internal timer frequency */

41
include/asm-xtensa/pgtable.h
View File

@ -14,45 +14,6 @@
#include <asm-generic/pgtable-nopmd.h>
#include <asm/page.h>
/* Assertions. */
#ifdef CONFIG_MMU
#if (XCHAL_MMU_RINGS < 2)
# error Linux build assumes at least 2 ring levels.
#endif
#if (XCHAL_MMU_CA_BITS != 4)
# error We assume exactly four bits for CA.
#endif
#if (XCHAL_MMU_SR_BITS != 0)
# error We have no room for SR bits.
#endif
/*
* Use the first min-wired way for mapping page-table pages.
* Page coloring requires a second min-wired way.
*/
#if (XCHAL_DTLB_MINWIRED_SETS == 0)
# error Need a min-wired way for mapping page-table pages
#endif
#define DTLB_WAY_PGTABLE XCHAL_DTLB_SET(XCHAL_DTLB_MINWIRED_SET0, WAY)
#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK
# if XCHAL_DTLB_SET(XCHAL_DTLB_MINWIRED_SET0, WAYS) >= 2
# define DTLB_WAY_DCACHE_ALIAS0 (DTLB_WAY_PGTABLE + 1)
# define DTLB_WAY_DCACHE_ALIAS1 (DTLB_WAY_PGTABLE + 2)
# else
# error Page coloring requires its own wired dtlb way!
# endif
#endif
#endif /* CONFIG_MMU */
/*
* We only use two ring levels, user and kernel space.
*/
@ -97,7 +58,7 @@
#define PGD_ORDER 0
#define PMD_ORDER 0
#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
#define FIRST_USER_ADDRESS XCHAL_SEG_MAPPABLE_VADDR
#define FIRST_USER_ADDRESS 0
#define FIRST_USER_PGD_NR (FIRST_USER_ADDRESS >> PGDIR_SHIFT)
/* virtual memory area. We keep a distance to other memory regions to be

10
include/asm-xtensa/platform-iss/hardware.h
View File

@ -12,18 +12,18 @@
* This file contains the default configuration of ISS.
*/
#ifndef __ASM_XTENSA_ISS_HARDWARE
#define __ASM_XTENSA_ISS_HARDWARE
#ifndef _XTENSA_PLATFORM_ISS_HARDWARE_H
#define _XTENSA_PLATFORM_ISS_HARDWARE_H
/*
* Memory configuration.
*/
#define PLATFORM_DEFAULT_MEM_START XSHAL_RAM_PADDR
#define PLATFORM_DEFAULT_MEM_SIZE XSHAL_RAM_VSIZE
#define PLATFORM_DEFAULT_MEM_START 0x00000000
#define PLATFORM_DEFAULT_MEM_SIZE 0x08000000
/*
* Interrupt configuration.
*/
#endif /* __ASM_XTENSA_ISS_HARDWARE */
#endif /* _XTENSA_PLATFORM_ISS_HARDWARE_H */

62
include/asm-xtensa/platform-iss/simcall.h Normal file
View File

@ -0,0 +1,62 @@
/*
* include/asm-xtensa/platform-iss/hardware.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 Tensilica Inc.
*/
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_H
/*
* System call like services offered by the simulator host.
*/
#define SYS_nop 0 /* unused */
#define SYS_exit 1 /*x*/
#define SYS_fork 2
#define SYS_read 3 /*x*/
#define SYS_write 4 /*x*/
#define SYS_open 5 /*x*/
#define SYS_close 6 /*x*/
#define SYS_rename 7 /*x 38 - waitpid */
#define SYS_creat 8 /*x*/
#define SYS_link 9 /*x (not implemented on WIN32) */
#define SYS_unlink 10 /*x*/
#define SYS_execv 11 /* n/a - execve */
#define SYS_execve 12 /* 11 - chdir */
#define SYS_pipe 13 /* 42 - time */
#define SYS_stat 14 /* 106 - mknod */
#define SYS_chmod 15
#define SYS_chown 16 /* 202 - lchown */
#define SYS_utime 17 /* 30 - break */
#define SYS_wait 18 /* n/a - oldstat */
#define SYS_lseek 19 /*x*/
#define SYS_getpid 20
#define SYS_isatty 21 /* n/a - mount */
#define SYS_fstat 22 /* 108 - oldumount */
#define SYS_time 23 /* 13 - setuid */
#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
#define SYS_socket 26
#define SYS_sendto 27
#define SYS_recvfrom 28
#define SYS_select_one 29 /* not compitible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
/*
* SYS_select_one specifiers
*/
#define XTISS_SELECT_ONE_READ 1
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */

24
include/asm-xtensa/processor.h
View File

@ -11,24 +11,18 @@
#ifndef _XTENSA_PROCESSOR_H
#define _XTENSA_PROCESSOR_H
#ifdef __ASSEMBLY__
#define _ASMLANGUAGE
#endif
#include <xtensa/config/core.h>
#include <xtensa/config/specreg.h>
#include <xtensa/config/tie.h>
#include <xtensa/config/system.h>
#include <asm/variant/core.h>
#include <asm/coprocessor.h>
#include <linux/compiler.h>
#include <asm/ptrace.h>
#include <asm/types.h>
#include <asm/coprocessor.h>
#include <asm/regs.h>
/* Assertions. */
#if (XCHAL_HAVE_WINDOWED != 1)
#error Linux requires the Xtensa Windowed Registers Option.
# error Linux requires the Xtensa Windowed Registers Option.
#endif
/*
@ -145,11 +139,11 @@ struct thread_struct {
* Note: We set-up ps as if we did a call4 to the new pc.
* set_thread_state in signal.c depends on it.
*/
#define USER_PS_VALUE ( (1 << XCHAL_PS_WOE_SHIFT) + \
(1 << XCHAL_PS_CALLINC_SHIFT) + \
(USER_RING << XCHAL_PS_RING_SHIFT) + \
(1 << XCHAL_PS_PROGSTACK_SHIFT) + \
(1 << XCHAL_PS_EXCM_SHIFT) )
#define USER_PS_VALUE ((1 << PS_WOE_BIT) | \
(1 << PS_CALLINC_SHIFT) | \
(USER_RING << PS_RING_SHIFT) | \
(1 << PS_UM_BIT) | \
(1 << PS_EXCM_BIT))
/* Clearing a0 terminates the backtrace. */
#define start_thread(regs, new_pc, new_sp) \

2
include/asm-xtensa/ptrace.h
View File

@ -11,7 +11,7 @@
#ifndef _XTENSA_PTRACE_H
#define _XTENSA_PTRACE_H
#include <xtensa/config/core.h>
#include <asm/variant/core.h>
/*
* Kernel stack

138
include/asm-xtensa/regs.h Normal file
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@ -0,0 +1,138 @@
/*
* Copyright (c) 2006 Tensilica, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*/
#ifndef _XTENSA_REGS_H
#define _XTENSA_REGS_H
/* Special registers. */
#define LBEG 0
#define LEND 1
#define LCOUNT 2
#define SAR 3
#define BR 4
#define SCOMPARE1 12
#define ACCHI 16
#define ACCLO 17
#define MR 32
#define WINDOWBASE 72
#define WINDOWSTART 73
#define PTEVADDR 83
#define RASID 90
#define ITLBCFG 91
#define DTLBCFG 92
#define IBREAKENABLE 96
#define DDR 104
#define IBREAKA 128
#define DBREAKA 144
#define DBREAKC 160
#define EPC 176
#define EPC_1 177
#define DEPC 192
#define EPS 192
#define EPS_1 193
#define EXCSAVE 208
#define EXCSAVE_1 209
#define INTERRUPT 226
#define INTENABLE 228
#define PS 230
#define THREADPTR 231
#define EXCCAUSE 232
#define DEBUGCAUSE 233
#define CCOUNT 234
#define PRID 235
#define ICOUNT 236
#define ICOUNTLEVEL 237
#define EXCVADDR 238
#define CCOMPARE 240
#define MISC 244
/* Special names for read-only and write-only interrupt registers. */
#define INTREAD 226
#define INTSET 226
#define INTCLEAR 227
/* EXCCAUSE register fields */
#define EXCCAUSE_EXCCAUSE_SHIFT 0
#define EXCCAUSE_EXCCAUSE_MASK 0x3F
#define EXCCAUSE_ILLEGAL_INSTRUCTION 0
#define EXCCAUSE_SYSTEM_CALL 1
#define EXCCAUSE_INSTRUCTION_FETCH_ERROR 2
#define EXCCAUSE_LOAD_STORE_ERROR 3
#define EXCCAUSE_LEVEL1_INTERRUPT 4
#define EXCCAUSE_ALLOCA 5
#define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO 6
#define EXCCAUSE_SPECULATION 7
#define EXCCAUSE_PRIVILEGED 8
#define EXCCAUSE_UNALIGNED 9
#define EXCCAUSE_ITLB_MISS 16
#define EXCCAUSE_ITLB_MULTIHIT 17
#define EXCCAUSE_ITLB_PRIVILEGE 18
#define EXCCAUSE_ITLB_SIZE_RESTRICTION 19
#define EXCCAUSE_FETCH_CACHE_ATTRIBUTE 20
#define EXCCAUSE_DTLB_MISS 24
#define EXCCAUSE_DTLB_MULTIHIT 25
#define EXCCAUSE_DTLB_PRIVILEGE 26
#define EXCCAUSE_DTLB_SIZE_RESTRICTION 27
#define EXCCAUSE_LOAD_CACHE_ATTRIBUTE 28
#define EXCCAUSE_STORE_CACHE_ATTRIBUTE 29
#define EXCCAUSE_FLOATING_POINT 40
/* PS register fields. */
#define PS_WOE_BIT 18
#define PS_CALLINC_SHIFT 16
#define PS_CALLINC_MASK 0x00030000
#define PS_OWB_SHIFT 8
#define PS_OWB_MASK 0x00000F00
#define PS_RING_SHIFT 6
#define PS_RING_MASK 0x000000C0
#define PS_UM_BIT 5
#define PS_EXCM_BIT 4
#define PS_INTLEVEL_SHIFT 0
#define PS_INTLEVEL_MASK 0x0000000F
/* DBREAKCn register fields. */
#define DBREAKC_MASK_BIT 0
#define DBREAKC_MASK_MASK 0x0000003F
#define DBREAKC_LOAD_BIT 30
#define DBREAKC_LOAD_MASK 0x40000000
#define DBREAKC_STOR_BIT 31
#define DBREAKC_STOR_MASK 0x80000000
/* DEBUGCAUSE register fields. */
#define DEBUGCAUSE_DEBUGINT_BIT 5 /* External debug interrupt */
#define DEBUGCAUSE_BREAKN_BIT 4 /* BREAK.N instruction */
#define DEBUGCAUSE_BREAK_BIT 3 /* BREAK instruction */
#define DEBUGCAUSE_DBREAK_BIT 2 /* DBREAK match */
#define DEBUGCAUSE_IBREAK_BIT 1 /* IBREAK match */
#define DEBUGCAUSE_ICOUNT_BIT 0 /* ICOUNT would incr. to zero */
#endif /* _XTENSA_SPECREG_H */

2
include/asm-xtensa/sembuf.h
View File

@ -25,7 +25,7 @@
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if XCHAL_HAVE_LE
#ifdef __XTENSA_EL__
__kernel_time_t sem_otime; /* last semop time */
unsigned long __unused1;
__kernel_time_t sem_ctime; /* last change time */

2
include/asm-xtensa/system.h
View File

@ -213,7 +213,7 @@ static inline void spill_registers(void)
unsigned int a0, ps;
__asm__ __volatile__ (
"movi a14," __stringify (PS_EXCM_MASK) " | 1\n\t"
"movi a14," __stringify (PS_EXCM_BIT) " | 1\n\t"
"mov a12, a0\n\t"
"rsr a13," __stringify(SAR) "\n\t"
"xsr a14," __stringify(PS) "\n\t"

17
include/asm-xtensa/timex.h
View File

@ -16,17 +16,22 @@
#include <asm/processor.h>
#include <linux/stringify.h>
#if XCHAL_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) == 1
#define _INTLEVEL(x) XCHAL_INT ## x ## _LEVEL
#define INTLEVEL(x) _INTLEVEL(x)
#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1
# define LINUX_TIMER 0
#elif XCHAL_INT_LEVEL(XCHAL_TIMER1_INTERRUPT) == 1
# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1
# define LINUX_TIMER 1
#elif XCHAL_INT_LEVEL(XCHAL_TIMER2_INTERRUPT) == 1
# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1
# define LINUX_TIMER 2
# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
#else
# error "Bad timer number for Linux configurations!"
#endif
#define LINUX_TIMER_INT XCHAL_TIMER_INTERRUPT(LINUX_TIMER)
#define LINUX_TIMER_MASK (1L << LINUX_TIMER_INT)
#define CLOCK_TICK_RATE 1193180 /* (everyone is using this value) */
@ -60,8 +65,8 @@ extern cycles_t cacheflush_time;
#define WSR_CCOUNT(r) __asm__("wsr %0,"__stringify(CCOUNT) :: "a" (r))
#define RSR_CCOUNT(r) __asm__("rsr %0,"__stringify(CCOUNT) : "=a" (r))
#define WSR_CCOMPARE(x,r) __asm__("wsr %0,"__stringify(CCOMPARE_0)"+"__stringify(x) :: "a"(r))
#define RSR_CCOMPARE(x,r) __asm__("rsr %0,"__stringify(CCOMPARE_0)"+"__stringify(x) : "=a"(r))
#define WSR_CCOMPARE(x,r) __asm__("wsr %0,"__stringify(CCOMPARE)"+"__stringify(x) :: "a"(r))
#define RSR_CCOMPARE(x,r) __asm__("rsr %0,"__stringify(CCOMPARE)"+"__stringify(x) : "=a"(r))
static inline unsigned long get_ccount (void)
{

42
include/asm-xtensa/tlbflush.h
View File

@ -11,12 +11,20 @@
#ifndef _XTENSA_TLBFLUSH_H
#define _XTENSA_TLBFLUSH_H
#define DEBUG_TLB
#ifdef __KERNEL__
#include <asm/processor.h>
#include <linux/stringify.h>
#include <asm/processor.h>
#define DTLB_WAY_PGD 7
#define ITLB_ARF_WAYS 4
#define DTLB_ARF_WAYS 4
#define ITLB_HIT_BIT 3
#define DTLB_HIT_BIT 4
#ifndef __ASSEMBLY__
/* TLB flushing:
*
@ -46,11 +54,6 @@ static inline void flush_tlb_pgtables(struct mm_struct *mm,
/* TLB operations. */
#define ITLB_WAYS_LOG2 XCHAL_ITLB_WAY_BITS
#define DTLB_WAYS_LOG2 XCHAL_DTLB_WAY_BITS
#define ITLB_PROBE_SUCCESS (1 << ITLB_WAYS_LOG2)
#define DTLB_PROBE_SUCCESS (1 << DTLB_WAYS_LOG2)
static inline unsigned long itlb_probe(unsigned long addr)
{
unsigned long tmp;
@ -131,29 +134,30 @@ static inline void write_itlb_entry (pte_t entry, int way)
static inline void invalidate_page_directory (void)
{
invalidate_dtlb_entry (DTLB_WAY_PGTABLE);
invalidate_dtlb_entry (DTLB_WAY_PGD);
invalidate_dtlb_entry (DTLB_WAY_PGD+1);
invalidate_dtlb_entry (DTLB_WAY_PGD+2);
}
static inline void invalidate_itlb_mapping (unsigned address)
{
unsigned long tlb_entry;
while ((tlb_entry = itlb_probe (address)) & ITLB_PROBE_SUCCESS)
invalidate_itlb_entry (tlb_entry);
if (((tlb_entry = itlb_probe(address)) & (1 << ITLB_HIT_BIT)) != 0)
invalidate_itlb_entry(tlb_entry);
}
static inline void invalidate_dtlb_mapping (unsigned address)
{
unsigned long tlb_entry;
while ((tlb_entry = dtlb_probe (address)) & DTLB_PROBE_SUCCESS)
invalidate_dtlb_entry (tlb_entry);
if (((tlb_entry = dtlb_probe(address)) & (1 << DTLB_HIT_BIT)) != 0)
invalidate_dtlb_entry(tlb_entry);
}
#define check_pgt_cache() do { } while (0)
#ifdef DEBUG_TLB
/* DO NOT USE THESE FUNCTIONS. These instructions aren't part of the Xtensa
/*
* DO NOT USE THESE FUNCTIONS. These instructions aren't part of the Xtensa
* ISA and exist only for test purposes..
* You may find it helpful for MMU debugging, however.
*
@ -193,8 +197,6 @@ static inline unsigned long read_itlb_translation (int way)
return tmp;
}
#endif /* DEBUG_TLB */
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _XTENSA_PGALLOC_H */
#endif /* _XTENSA_TLBFLUSH_H */

359
include/asm-xtensa/variant-fsf/core.h Normal file
View File

@ -0,0 +1,359 @@
/*
* Xtensa processor core configuration information.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999-2006 Tensilica Inc.
*/
#ifndef _XTENSA_CORE_H
#define _XTENSA_CORE_H
/****************************************************************************
Parameters Useful for Any Code, USER or PRIVILEGED
****************************************************************************/
/*
* Note: Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
* configured, and a value of 0 otherwise. These macros are always defined.
*/
/*----------------------------------------------------------------------
ISA
----------------------------------------------------------------------*/
#define XCHAL_HAVE_BE 1 /* big-endian byte ordering */
#define XCHAL_HAVE_WINDOWED 1 /* windowed registers option */
#define XCHAL_NUM_AREGS 64 /* num of physical addr regs */
#define XCHAL_NUM_AREGS_LOG2 6 /* log2(XCHAL_NUM_AREGS) */
#define XCHAL_MAX_INSTRUCTION_SIZE 3 /* max instr bytes (3..8) */
#define XCHAL_HAVE_DEBUG 1 /* debug option */
#define XCHAL_HAVE_DENSITY 1 /* 16-bit instructions */
#define XCHAL_HAVE_LOOPS 1 /* zero-overhead loops */
#define XCHAL_HAVE_NSA 1 /* NSA/NSAU instructions */
#define XCHAL_HAVE_MINMAX 0 /* MIN/MAX instructions */
#define XCHAL_HAVE_SEXT 0 /* SEXT instruction */
#define XCHAL_HAVE_CLAMPS 0 /* CLAMPS instruction */
#define XCHAL_HAVE_MUL16 0 /* MUL16S/MUL16U instructions */
#define XCHAL_HAVE_MUL32 0 /* MULL instruction */
#define XCHAL_HAVE_MUL32_HIGH 0 /* MULUH/MULSH instructions */
#define XCHAL_HAVE_L32R 1 /* L32R instruction */
#define XCHAL_HAVE_ABSOLUTE_LITERALS 1 /* non-PC-rel (extended) L32R */
#define XCHAL_HAVE_CONST16 0 /* CONST16 instruction */
#define XCHAL_HAVE_ADDX 1 /* ADDX#/SUBX# instructions */
#define XCHAL_HAVE_WIDE_BRANCHES 0 /* B*.W18 or B*.W15 instr's */
#define XCHAL_HAVE_PREDICTED_BRANCHES 0 /* B[EQ/EQZ/NE/NEZ]T instr's */
#define XCHAL_HAVE_CALL4AND12 1 /* (obsolete option) */
#define XCHAL_HAVE_ABS 1 /* ABS instruction */
/*#define XCHAL_HAVE_POPC 0*/ /* POPC instruction */
/*#define XCHAL_HAVE_CRC 0*/ /* CRC instruction */
#define XCHAL_HAVE_RELEASE_SYNC 0 /* L32AI/S32RI instructions */
#define XCHAL_HAVE_S32C1I 0 /* S32C1I instruction */
#define XCHAL_HAVE_SPECULATION 0 /* speculation */
#define XCHAL_HAVE_FULL_RESET 1 /* all regs/state reset */
#define XCHAL_NUM_CONTEXTS 1 /* */
#define XCHAL_NUM_MISC_REGS 2 /* num of scratch regs (0..4) */
#define XCHAL_HAVE_TAP_MASTER 0 /* JTAG TAP control instr's */
#define XCHAL_HAVE_PRID 1 /* processor ID register */
#define XCHAL_HAVE_THREADPTR 1 /* THREADPTR register */
#define XCHAL_HAVE_BOOLEANS 0 /* boolean registers */
#define XCHAL_HAVE_CP 0 /* CPENABLE reg (coprocessor) */
#define XCHAL_CP_MAXCFG 0 /* max allowed cp id plus one */
#define XCHAL_HAVE_MAC16 0 /* MAC16 package */
#define XCHAL_HAVE_VECTORFPU2005 0 /* vector floating-point pkg */
#define XCHAL_HAVE_FP 0 /* floating point pkg */
#define XCHAL_HAVE_VECTRA1 0 /* Vectra I pkg */
#define XCHAL_HAVE_VECTRALX 0 /* Vectra LX pkg */
#define XCHAL_HAVE_HIFI2 0 /* HiFi2 Audio Engine pkg */
/*----------------------------------------------------------------------
MISC
----------------------------------------------------------------------*/
#define XCHAL_NUM_WRITEBUFFER_ENTRIES 4 /* size of write buffer */
#define XCHAL_INST_FETCH_WIDTH 4 /* instr-fetch width in bytes */
#define XCHAL_DATA_WIDTH 4 /* data width in bytes */
/* In T1050, applies to selected core load and store instructions (see ISA): */
#define XCHAL_UNALIGNED_LOAD_EXCEPTION 1 /* unaligned loads cause exc. */
#define XCHAL_UNALIGNED_STORE_EXCEPTION 1 /* unaligned stores cause exc.*/
#define XCHAL_CORE_ID "fsf" /* alphanum core name
(CoreID) set in the Xtensa
Processor Generator */
#define XCHAL_BUILD_UNIQUE_ID 0x00006700 /* 22-bit sw build ID */
/*
* These definitions describe the hardware targeted by this software.
*/
#define XCHAL_HW_CONFIGID0 0xC103C3FF /* ConfigID hi 32 bits*/
#define XCHAL_HW_CONFIGID1 0x0C006700 /* ConfigID lo 32 bits*/
#define XCHAL_HW_VERSION_NAME "LX2.0.0" /* full version name */
#define XCHAL_HW_VERSION_MAJOR 2200 /* major ver# of targeted hw */
#define XCHAL_HW_VERSION_MINOR 0 /* minor ver# of targeted hw */
#define XTHAL_HW_REL_LX2 1
#define XTHAL_HW_REL_LX2_0 1
#define XTHAL_HW_REL_LX2_0_0 1
#define XCHAL_HW_CONFIGID_RELIABLE 1
/* If software targets a *range* of hardware versions, these are the bounds: */
#define XCHAL_HW_MIN_VERSION_MAJOR 2200 /* major v of earliest tgt hw */
#define XCHAL_HW_MIN_VERSION_MINOR 0 /* minor v of earliest tgt hw */
#define XCHAL_HW_MAX_VERSION_MAJOR 2200 /* major v of latest tgt hw */
#define XCHAL_HW_MAX_VERSION_MINOR 0 /* minor v of latest tgt hw */
/*----------------------------------------------------------------------
CACHE
----------------------------------------------------------------------*/
#define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */
#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */
#define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */
#define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */
#define XCHAL_ICACHE_SIZE 8192 /* I-cache size in bytes or 0 */
#define XCHAL_DCACHE_SIZE 8192 /* D-cache size in bytes or 0 */
#define XCHAL_DCACHE_IS_WRITEBACK 0 /* writeback feature */
/****************************************************************************
Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
****************************************************************************/
#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
/*----------------------------------------------------------------------
CACHE
----------------------------------------------------------------------*/
#define XCHAL_HAVE_PIF 1 /* any outbound PIF present */
/* If present, cache size in bytes == (ways * 2^(linewidth + setwidth)). */
/* Number of cache sets in log2(lines per way): */
#define XCHAL_ICACHE_SETWIDTH 8
#define XCHAL_DCACHE_SETWIDTH 8
/* Cache set associativity (number of ways): */
#define XCHAL_ICACHE_WAYS 2
#define XCHAL_DCACHE_WAYS 2
/* Cache features: */
#define XCHAL_ICACHE_LINE_LOCKABLE 0
#define XCHAL_DCACHE_LINE_LOCKABLE 0
#define XCHAL_ICACHE_ECC_PARITY 0
#define XCHAL_DCACHE_ECC_PARITY 0
/* Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits): */
#define XCHAL_CA_BITS 4
/*----------------------------------------------------------------------
INTERNAL I/D RAM/ROMs and XLMI
----------------------------------------------------------------------*/
#define XCHAL_NUM_INSTROM 0 /* number of core instr. ROMs */
#define XCHAL_NUM_INSTRAM 0 /* number of core instr. RAMs */
#define XCHAL_NUM_DATAROM 0 /* number of core data ROMs */
#define XCHAL_NUM_DATARAM 0 /* number of core data RAMs */
#define XCHAL_NUM_URAM 0 /* number of core unified RAMs*/
#define XCHAL_NUM_XLMI 0 /* number of core XLMI ports */
/*----------------------------------------------------------------------
INTERRUPTS and TIMERS
----------------------------------------------------------------------*/
#define XCHAL_HAVE_INTERRUPTS 1 /* interrupt option */
#define XCHAL_HAVE_HIGHPRI_INTERRUPTS 1 /* med/high-pri. interrupts */
#define XCHAL_HAVE_NMI 0 /* non-maskable interrupt */
#define XCHAL_HAVE_CCOUNT 1 /* CCOUNT reg. (timer option) */
#define XCHAL_NUM_TIMERS 3 /* number of CCOMPAREn regs */
#define XCHAL_NUM_INTERRUPTS 17 /* number of interrupts */
#define XCHAL_NUM_INTERRUPTS_LOG2 5 /* ceil(log2(NUM_INTERRUPTS)) */
#define XCHAL_NUM_EXTINTERRUPTS 10 /* num of external interrupts */
#define XCHAL_NUM_INTLEVELS 4 /* number of interrupt levels
(not including level zero) */
#define XCHAL_EXCM_LEVEL 1 /* level masked by PS.EXCM */
/* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
/* Masks of interrupts at each interrupt level: */
#define XCHAL_INTLEVEL1_MASK 0x000064F9
#define XCHAL_INTLEVEL2_MASK 0x00008902
#define XCHAL_INTLEVEL3_MASK 0x00011204
#define XCHAL_INTLEVEL4_MASK 0x00000000
#define XCHAL_INTLEVEL5_MASK 0x00000000
#define XCHAL_INTLEVEL6_MASK 0x00000000
#define XCHAL_INTLEVEL7_MASK 0x00000000
/* Masks of interrupts at each range 1..n of interrupt levels: */
#define XCHAL_INTLEVEL1_ANDBELOW_MASK 0x000064F9
#define XCHAL_INTLEVEL2_ANDBELOW_MASK 0x0000EDFB
#define XCHAL_INTLEVEL3_ANDBELOW_MASK 0x0001FFFF
#define XCHAL_INTLEVEL4_ANDBELOW_MASK 0x0001FFFF
#define XCHAL_INTLEVEL5_ANDBELOW_MASK 0x0001FFFF
#define XCHAL_INTLEVEL6_ANDBELOW_MASK 0x0001FFFF
#define XCHAL_INTLEVEL7_ANDBELOW_MASK 0x0001FFFF
/* Level of each interrupt: */
#define XCHAL_INT0_LEVEL 1
#define XCHAL_INT1_LEVEL 2
#define XCHAL_INT2_LEVEL 3
#define XCHAL_INT3_LEVEL 1
#define XCHAL_INT4_LEVEL 1
#define XCHAL_INT5_LEVEL 1
#define XCHAL_INT6_LEVEL 1
#define XCHAL_INT7_LEVEL 1
#define XCHAL_INT8_LEVEL 2
#define XCHAL_INT9_LEVEL 3
#define XCHAL_INT10_LEVEL 1
#define XCHAL_INT11_LEVEL 2
#define XCHAL_INT12_LEVEL 3
#define XCHAL_INT13_LEVEL 1
#define XCHAL_INT14_LEVEL 1
#define XCHAL_INT15_LEVEL 2
#define XCHAL_INT16_LEVEL 3
#define XCHAL_DEBUGLEVEL 4 /* debug interrupt level */
#define XCHAL_HAVE_DEBUG_EXTERN_INT 0 /* OCD external db interrupt */
/* Type of each interrupt: */
#define XCHAL_INT0_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT1_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT2_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT3_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT4_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT5_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT6_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
#define XCHAL_INT7_TYPE XTHAL_INTTYPE_EXTERN_EDGE
#define XCHAL_INT8_TYPE XTHAL_INTTYPE_EXTERN_EDGE
#define XCHAL_INT9_TYPE XTHAL_INTTYPE_EXTERN_EDGE
#define XCHAL_INT10_TYPE XTHAL_INTTYPE_TIMER
#define XCHAL_INT11_TYPE XTHAL_INTTYPE_TIMER
#define XCHAL_INT12_TYPE XTHAL_INTTYPE_TIMER
#define XCHAL_INT13_TYPE XTHAL_INTTYPE_SOFTWARE
#define XCHAL_INT14_TYPE XTHAL_INTTYPE_SOFTWARE
#define XCHAL_INT15_TYPE XTHAL_INTTYPE_SOFTWARE
#define XCHAL_INT16_TYPE XTHAL_INTTYPE_SOFTWARE
/* Masks of interrupts for each type of interrupt: */
#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFFE0000
#define XCHAL_INTTYPE_MASK_SOFTWARE 0x0001E000
#define XCHAL_INTTYPE_MASK_EXTERN_EDGE 0x00000380
#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000007F
#define XCHAL_INTTYPE_MASK_TIMER 0x00001C00
#define XCHAL_INTTYPE_MASK_NMI 0x00000000
#define XCHAL_INTTYPE_MASK_WRITE_ERROR 0x00000000
/* Interrupt numbers assigned to specific interrupt sources: */
#define XCHAL_TIMER0_INTERRUPT 10 /* CCOMPARE0 */
#define XCHAL_TIMER1_INTERRUPT 11 /* CCOMPARE1 */
#define XCHAL_TIMER2_INTERRUPT 12 /* CCOMPARE2 */
#define XCHAL_TIMER3_INTERRUPT XTHAL_TIMER_UNCONFIGURED
/* Interrupt numbers for levels at which only one interrupt is configured: */
/* (There are many interrupts each at level(s) 1, 2, 3.) */
/*
* External interrupt vectors/levels.
* These macros describe how Xtensa processor interrupt numbers
* (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
* map to external BInterrupt<n> pins, for those interrupts
* configured as external (level-triggered, edge-triggered, or NMI).
* See the Xtensa processor databook for more details.
*/
/* Core interrupt numbers mapped to each EXTERNAL interrupt number: */
#define XCHAL_EXTINT0_NUM 0 /* (intlevel 1) */
#define XCHAL_EXTINT1_NUM 1 /* (intlevel 2) */
#define XCHAL_EXTINT2_NUM 2 /* (intlevel 3) */
#define XCHAL_EXTINT3_NUM 3 /* (intlevel 1) */
#define XCHAL_EXTINT4_NUM 4 /* (intlevel 1) */
#define XCHAL_EXTINT5_NUM 5 /* (intlevel 1) */
#define XCHAL_EXTINT6_NUM 6 /* (intlevel 1) */
#define XCHAL_EXTINT7_NUM 7 /* (intlevel 1) */
#define XCHAL_EXTINT8_NUM 8 /* (intlevel 2) */
#define XCHAL_EXTINT9_NUM 9 /* (intlevel 3) */
/*----------------------------------------------------------------------
EXCEPTIONS and VECTORS
----------------------------------------------------------------------*/
#define XCHAL_XEA_VERSION 2 /* Xtensa Exception Architecture
number: 1 == XEA1 (old)
2 == XEA2 (new)
0 == XEAX (extern) */
#define XCHAL_HAVE_XEA1 0 /* Exception Architecture 1 */
#define XCHAL_HAVE_XEA2 1 /* Exception Architecture 2 */
#define XCHAL_HAVE_XEAX 0 /* External Exception Arch. */
#define XCHAL_HAVE_EXCEPTIONS 1 /* exception option */
#define XCHAL_HAVE_MEM_ECC_PARITY 0 /* local memory ECC/parity */
#define XCHAL_RESET_VECTOR_VADDR 0xFE000020
#define XCHAL_RESET_VECTOR_PADDR 0xFE000020
#define XCHAL_USER_VECTOR_VADDR 0xD0000220
#define XCHAL_USER_VECTOR_PADDR 0x00000220
#define XCHAL_KERNEL_VECTOR_VADDR 0xD0000200
#define XCHAL_KERNEL_VECTOR_PADDR 0x00000200
#define XCHAL_DOUBLEEXC_VECTOR_VADDR 0xD0000290
#define XCHAL_DOUBLEEXC_VECTOR_PADDR 0x00000290
#define XCHAL_WINDOW_VECTORS_VADDR 0xD0000000
#define XCHAL_WINDOW_VECTORS_PADDR 0x00000000
#define XCHAL_INTLEVEL2_VECTOR_VADDR 0xD0000240
#define XCHAL_INTLEVEL2_VECTOR_PADDR 0x00000240
#define XCHAL_INTLEVEL3_VECTOR_VADDR 0xD0000250
#define XCHAL_INTLEVEL3_VECTOR_PADDR 0x00000250
#define XCHAL_INTLEVEL4_VECTOR_VADDR 0xFE000520
#define XCHAL_INTLEVEL4_VECTOR_PADDR 0xFE000520
#define XCHAL_DEBUG_VECTOR_VADDR XCHAL_INTLEVEL4_VECTOR_VADDR
#define XCHAL_DEBUG_VECTOR_PADDR XCHAL_INTLEVEL4_VECTOR_PADDR
/*----------------------------------------------------------------------
DEBUG
----------------------------------------------------------------------*/
#define XCHAL_HAVE_OCD 1 /* OnChipDebug option */
#define XCHAL_NUM_IBREAK 2 /* number of IBREAKn regs */
#define XCHAL_NUM_DBREAK 2 /* number of DBREAKn regs */
#define XCHAL_HAVE_OCD_DIR_ARRAY 1 /* faster OCD option */
/*----------------------------------------------------------------------
MMU
----------------------------------------------------------------------*/
/* See <xtensa/config/core-matmap.h> header file for more details. */
#define XCHAL_HAVE_TLBS 1 /* inverse of HAVE_CACHEATTR */
#define XCHAL_HAVE_SPANNING_WAY 0 /* one way maps I+D 4GB vaddr */
#define XCHAL_HAVE_IDENTITY_MAP 0 /* vaddr == paddr always */
#define XCHAL_HAVE_CACHEATTR 0 /* CACHEATTR register present */
#define XCHAL_HAVE_MIMIC_CACHEATTR 0 /* region protection */
#define XCHAL_HAVE_XLT_CACHEATTR 0 /* region prot. w/translation */
#define XCHAL_HAVE_PTP_MMU 1 /* full MMU (with page table
[autorefill] and protection)
usable for an MMU-based OS */
/* If none of the above last 4 are set, it's a custom TLB configuration. */
#define XCHAL_ITLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
#define XCHAL_DTLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
#define XCHAL_MMU_ASID_BITS 8 /* number of bits in ASIDs */
#define XCHAL_MMU_RINGS 4 /* number of rings (1..4) */
#define XCHAL_MMU_RING_BITS 2 /* num of bits in RING field */
#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
#endif /* _XTENSA_CORE_CONFIGURATION_H */

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include/asm-xtensa/variant-fsf/tie.h Normal file
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/*
* Xtensa processor core configuration information.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999-2006 Tensilica Inc.
*/
#ifndef XTENSA_TIE_H
#define XTENSA_TIE_H
/*----------------------------------------------------------------------
COPROCESSORS and EXTRA STATE
----------------------------------------------------------------------*/
#define XCHAL_CP_NUM 0 /* number of coprocessors */
#define XCHAL_CP_MASK 0x00
#endif /*XTENSA_CONFIG_TIE_H*/

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include/asm-xtensa/xtensa/cacheasm.h
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#ifndef XTENSA_CACHEASM_H
#define XTENSA_CACHEASM_H
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/cacheasm.h -- assembler-specific cache
* related definitions that depend on CORE configuration.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
/*
* This header file defines assembler macros of the form:
* <x>cache_<func>
* where <x> is 'i' or 'd' for instruction and data caches,
* and <func> indicates the function of the macro.
*
* The following functions <func> are defined,
* and apply only to the specified cache (I or D):
*
* reset
* Resets the cache.
*
* sync
* Makes sure any previous cache instructions have been completed;
* ie. makes sure any previous cache control operations
* have had full effect and been synchronized to memory.
* Eg. any invalidate completed [so as not to generate a hit],
* any writebacks or other pipelined writes written to memory, etc.
*
* invalidate_line (single cache line)
* invalidate_region (specified memory range)
* invalidate_all (entire cache)
* Invalidates all cache entries that cache
* data from the specified memory range.
* NOTE: locked entries are not invalidated.
*
* writeback_line (single cache line)
* writeback_region (specified memory range)
* writeback_all (entire cache)
* Writes back to memory all dirty cache entries
* that cache data from the specified memory range,
* and marks these entries as clean.
* NOTE: on some future implementations, this might
* also invalidate.
* NOTE: locked entries are written back, but never invalidated.
* NOTE: instruction caches never implement writeback.
*
* writeback_inv_line (single cache line)
* writeback_inv_region (specified memory range)
* writeback_inv_all (entire cache)
* Writes back to memory all dirty cache entries
* that cache data from the specified memory range,
* and invalidates these entries (including all clean
* cache entries that cache data from that range).
* NOTE: locked entries are written back but not invalidated.
* NOTE: instruction caches never implement writeback.
*
* lock_line (single cache line)
* lock_region (specified memory range)
* Prefetch and lock the specified memory range into cache.
* NOTE: if any part of the specified memory range cannot
* be locked, a ??? exception occurs. These macros don't
* do anything special (yet anyway) to handle this situation.
*
* unlock_line (single cache line)
* unlock_region (specified memory range)
* unlock_all (entire cache)
* Unlock cache entries that cache the specified memory range.
* Entries not already locked are unaffected.
*/
/*************************** GENERIC -- ALL CACHES ***************************/
/*
* The following macros assume the following cache size/parameter limits
* in the current Xtensa core implementation:
* cache size: 1024 bytes minimum
* line size: 16 - 64 bytes
* way count: 1 - 4
*
* Minimum entries per way (ie. per associativity) = 1024 / 64 / 4 = 4
* Hence the assumption that each loop can execute four cache instructions.
*
* Correspondingly, the offset range of instructions is assumed able to cover
* four lines, ie. offsets {0,1,2,3} * line_size are assumed valid for
* both hit and indexed cache instructions. Ie. these offsets are all
* valid: 0, 16, 32, 48, 64, 96, 128, 192 (for line sizes 16, 32, 64).
* This is true of all original cache instructions
* (dhi, ihi, dhwb, dhwbi, dii, iii) which have offsets
* of 0 to 1020 in multiples of 4 (ie. 8 bits shifted by 2).
* This is also true of subsequent cache instructions
* (dhu, ihu, diu, iiu, diwb, diwbi, dpfl, ipfl) which have offsets
* of 0 to 240 in multiples of 16 (ie. 4 bits shifted by 4).
*
* (Maximum cache size, currently 32k, doesn't affect the following macros.
* Cache ways > MMU min page size cause aliasing but that's another matter.)
*/
/*
* Macro to apply an 'indexed' cache instruction to the entire cache.
*
* Parameters:
* cainst instruction/ that takes an address register parameter
* and an offset parameter (in range 0 .. 3*linesize).
* size size of cache in bytes
* linesize size of cache line in bytes
* assoc_or1 number of associativities (ways/sets) in cache
* if all sets affected by cainst,
* or 1 if only one set (or not all sets) of the cache
* is affected by cainst (eg. DIWB or DIWBI [not yet ISA defined]).
* aa, ab unique address registers (temporaries)
*/
.macro cache_index_all cainst, size, linesize, assoc_or1, aa, ab
// Sanity-check on cache parameters:
.ifne (\size % (\linesize * \assoc_or1 * 4))
.err // cache configuration outside expected/supported range!
.endif
// \size byte cache, \linesize byte lines, \assoc_or1 way(s) affected by each \cainst.
movi \aa, (\size / (\linesize * \assoc_or1 * 4))
// Possible improvement: need only loop if \aa > 1 ;
// however that particular condition is highly unlikely.
movi \ab, 0 // to iterate over cache
floop \aa, cachex\@
\cainst \ab, 0*\linesize
\cainst \ab, 1*\linesize
\cainst \ab, 2*\linesize
\cainst \ab, 3*\linesize
addi \ab, \ab, 4*\linesize // move to next line
floopend \aa, cachex\@
.endm
/*
* Macro to apply a 'hit' cache instruction to a memory region,
* ie. to any cache entries that cache a specified portion (region) of memory.
* Takes care of the unaligned cases, ie. may apply to one
* more cache line than $asize / lineSize if $aaddr is not aligned.
*
*
* Parameters are:
* cainst instruction/macro that takes an address register parameter
* and an offset parameter (currently always zero)
* and generates a cache instruction (eg. "dhi", "dhwb", "ihi", etc.)
* linesize_log2 log2(size of cache line in bytes)
* addr register containing start address of region (clobbered)
* asize register containing size of the region in bytes (clobbered)
* askew unique register used as temporary
*
* !?!?! 2DO: optimization: iterate max(cache_size and \asize) / linesize
*/
.macro cache_hit_region cainst, linesize_log2, addr, asize, askew
// Make \asize the number of iterations:
extui \askew, \addr, 0, \linesize_log2 // get unalignment amount of \addr
add \asize, \asize, \askew // ... and add it to \asize
addi \asize, \asize, (1 << \linesize_log2) - 1 // round up!
srli \asize, \asize, \linesize_log2
// Iterate over region:
floopnez \asize, cacheh\@
\cainst \addr, 0
addi \addr, \addr, (1 << \linesize_log2) // move to next line
floopend \asize, cacheh\@
.endm
/*************************** INSTRUCTION CACHE ***************************/
/*
* Reset/initialize the instruction cache by simply invalidating it:
* (need to unlock first also, if cache locking implemented):
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro icache_reset aa, ab
icache_unlock_all \aa, \ab
icache_invalidate_all \aa, \ab
.endm
/*
* Synchronize after an instruction cache operation,
* to be sure everything is in sync with memory as to be
* expected following any previous instruction cache control operations.
*
* Parameters are:
* ar an address register (temporary) (currently unused, but may be used in future)
*/
.macro icache_sync ar
#if XCHAL_ICACHE_SIZE > 0
isync
#endif
.endm
/*
* Invalidate a single line of the instruction cache.
* Parameters are:
* ar address register that contains (virtual) address to invalidate
* (may get clobbered in a future implementation, but not currently)
* offset (optional) offset to add to \ar to compute effective address to invalidate
* (note: some number of lsbits are ignored)
*/
.macro icache_invalidate_line ar, offset
#if XCHAL_ICACHE_SIZE > 0
ihi \ar, \offset // invalidate icache line
/*
* NOTE: in some version of the silicon [!!!SHOULD HAVE BEEN DOCUMENTED!!!]
* 'ihi' doesn't work, so it had been replaced with 'iii'
* (which would just invalidate more than it should,
* which should be okay other than the performance hit
* because cache locking did not exist in that version,
* unless user somehow relies on something being cached).
* [WHAT VERSION IS IT!!?!?
* IS THERE ANY WAY TO TEST FOR THAT HERE, TO OUTPUT 'III' ONLY IF NEEDED!?!?].
*
* iii \ar, \offset
*/
icache_sync \ar
#endif
.endm
/*
* Invalidate instruction cache entries that cache a specified portion of memory.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro icache_invalidate_region astart, asize, ac
#if XCHAL_ICACHE_SIZE > 0
// Instruction cache region invalidation:
cache_hit_region ihi, XCHAL_ICACHE_LINEWIDTH, \astart, \asize, \ac
icache_sync \ac
// End of instruction cache region invalidation
#endif
.endm
/*
* Invalidate entire instruction cache.
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro icache_invalidate_all aa, ab
#if XCHAL_ICACHE_SIZE > 0
// Instruction cache invalidation:
cache_index_all iii, XCHAL_ICACHE_SIZE, XCHAL_ICACHE_LINESIZE, XCHAL_ICACHE_WAYS, \aa, \ab
icache_sync \aa
// End of instruction cache invalidation
#endif
.endm
/*
* Lock (prefetch & lock) a single line of the instruction cache.
*
* Parameters are:
* ar address register that contains (virtual) address to lock
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to lock
* (note: some number of lsbits are ignored)
*/
.macro icache_lock_line ar, offset
#if XCHAL_ICACHE_SIZE > 0 && XCHAL_ICACHE_LINE_LOCKABLE
ipfl \ar, \offset /* prefetch and lock icache line */
icache_sync \ar
#endif
.endm
/*
* Lock (prefetch & lock) a specified portion of memory into the instruction cache.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro icache_lock_region astart, asize, ac
#if XCHAL_ICACHE_SIZE > 0 && XCHAL_ICACHE_LINE_LOCKABLE
// Instruction cache region lock:
cache_hit_region ipfl, XCHAL_ICACHE_LINEWIDTH, \astart, \asize, \ac
icache_sync \ac
// End of instruction cache region lock
#endif
.endm
/*
* Unlock a single line of the instruction cache.
*
* Parameters are:
* ar address register that contains (virtual) address to unlock
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to unlock
* (note: some number of lsbits are ignored)
*/
.macro icache_unlock_line ar, offset
#if XCHAL_ICACHE_SIZE > 0 && XCHAL_ICACHE_LINE_LOCKABLE
ihu \ar, \offset /* unlock icache line */
icache_sync \ar
#endif
.endm
/*
* Unlock a specified portion of memory from the instruction cache.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro icache_unlock_region astart, asize, ac
#if XCHAL_ICACHE_SIZE > 0 && XCHAL_ICACHE_LINE_LOCKABLE
// Instruction cache region unlock:
cache_hit_region ihu, XCHAL_ICACHE_LINEWIDTH, \astart, \asize, \ac
icache_sync \ac
// End of instruction cache region unlock
#endif
.endm
/*
* Unlock entire instruction cache.
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro icache_unlock_all aa, ab
#if XCHAL_ICACHE_SIZE > 0 && XCHAL_ICACHE_LINE_LOCKABLE
// Instruction cache unlock:
cache_index_all iiu, XCHAL_ICACHE_SIZE, XCHAL_ICACHE_LINESIZE, 1, \aa, \ab
icache_sync \aa
// End of instruction cache unlock
#endif
.endm
/*************************** DATA CACHE ***************************/
/*
* Reset/initialize the data cache by simply invalidating it
* (need to unlock first also, if cache locking implemented):
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro dcache_reset aa, ab
dcache_unlock_all \aa, \ab
dcache_invalidate_all \aa, \ab
.endm
/*
* Synchronize after a data cache operation,
* to be sure everything is in sync with memory as to be
* expected following any previous data cache control operations.
*
* Parameters are:
* ar an address register (temporary) (currently unused, but may be used in future)
*/
.macro dcache_sync ar
#if XCHAL_DCACHE_SIZE > 0
// This previous sequence errs on the conservative side (too much so); a DSYNC should be sufficient:
//memw // synchronize data cache changes relative to subsequent memory accesses
//isync // be conservative and ISYNC as well (just to be sure)
dsync
#endif
.endm
/*
* Synchronize after a data store operation,
* to be sure the stored data is completely off the processor
* (and assuming there is no buffering outside the processor,
* that the data is in memory). This may be required to
* ensure that the processor's write buffers are emptied.
* A MEMW followed by a read guarantees this, by definition.
* We also try to make sure the read itself completes.
*
* Parameters are:
* ar an address register (temporary)
*/
.macro write_sync ar
memw // ensure previous memory accesses are complete prior to subsequent memory accesses
l32i \ar, sp, 0 // completing this read ensures any previous write has completed, because of MEMW
//slot
add \ar, \ar, \ar // use the result of the read to help ensure the read completes (in future architectures)
.endm
/*
* Invalidate a single line of the data cache.
* Parameters are:
* ar address register that contains (virtual) address to invalidate
* (may get clobbered in a future implementation, but not currently)
* offset (optional) offset to add to \ar to compute effective address to invalidate
* (note: some number of lsbits are ignored)
*/
.macro dcache_invalidate_line ar, offset
#if XCHAL_DCACHE_SIZE > 0
dhi \ar, \offset
dcache_sync \ar
#endif
.endm
/*
* Invalidate data cache entries that cache a specified portion of memory.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro dcache_invalidate_region astart, asize, ac
#if XCHAL_DCACHE_SIZE > 0
// Data cache region invalidation:
cache_hit_region dhi, XCHAL_DCACHE_LINEWIDTH, \astart, \asize, \ac
dcache_sync \ac
// End of data cache region invalidation
#endif
.endm
#if 0
/*
* This is a work-around for a bug in SiChip1 (???).
* There should be a proper mechanism for not outputting
* these instructions when not needed.
* To enable work-around, uncomment this and replace 'dii'
* with 'dii_s1' everywhere, eg. in dcache_invalidate_all
* macro below.
*/
.macro dii_s1 ar, offset
dii \ar, \offset
or \ar, \ar, \ar
or \ar, \ar, \ar
or \ar, \ar, \ar
or \ar, \ar, \ar
.endm
#endif
/*
* Invalidate entire data cache.
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro dcache_invalidate_all aa, ab
#if XCHAL_DCACHE_SIZE > 0
// Data cache invalidation:
cache_index_all dii, XCHAL_DCACHE_SIZE, XCHAL_DCACHE_LINESIZE, XCHAL_DCACHE_WAYS, \aa, \ab
dcache_sync \aa
// End of data cache invalidation
#endif
.endm
/*
* Writeback a single line of the data cache.
* Parameters are:
* ar address register that contains (virtual) address to writeback
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to writeback
* (note: some number of lsbits are ignored)
*/
.macro dcache_writeback_line ar, offset
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_IS_WRITEBACK
dhwb \ar, \offset
dcache_sync \ar
#endif
.endm
/*
* Writeback dirty data cache entries that cache a specified portion of memory.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro dcache_writeback_region astart, asize, ac
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_IS_WRITEBACK
// Data cache region writeback:
cache_hit_region dhwb, XCHAL_DCACHE_LINEWIDTH, \astart, \asize, \ac
dcache_sync \ac
// End of data cache region writeback
#endif
.endm
/*
* Writeback entire data cache.
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro dcache_writeback_all aa, ab
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_IS_WRITEBACK
// Data cache writeback:
cache_index_all diwb, XCHAL_DCACHE_SIZE, XCHAL_DCACHE_LINESIZE, 1, \aa, \ab
dcache_sync \aa
// End of data cache writeback
#endif
.endm
/*
* Writeback and invalidate a single line of the data cache.
* Parameters are:
* ar address register that contains (virtual) address to writeback and invalidate
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to writeback and invalidate
* (note: some number of lsbits are ignored)
*/
.macro dcache_writeback_inv_line ar, offset
#if XCHAL_DCACHE_SIZE > 0
dhwbi \ar, \offset /* writeback and invalidate dcache line */
dcache_sync \ar
#endif
.endm
/*
* Writeback and invalidate data cache entries that cache a specified portion of memory.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro dcache_writeback_inv_region astart, asize, ac
#if XCHAL_DCACHE_SIZE > 0
// Data cache region writeback and invalidate:
cache_hit_region dhwbi, XCHAL_DCACHE_LINEWIDTH, \astart, \asize, \ac
dcache_sync \ac
// End of data cache region writeback and invalidate
#endif
.endm
/*
* Writeback and invalidate entire data cache.
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro dcache_writeback_inv_all aa, ab
#if XCHAL_DCACHE_SIZE > 0
// Data cache writeback and invalidate:
#if XCHAL_DCACHE_IS_WRITEBACK
cache_index_all diwbi, XCHAL_DCACHE_SIZE, XCHAL_DCACHE_LINESIZE, 1, \aa, \ab
dcache_sync \aa
#else /*writeback*/
// Data cache does not support writeback, so just invalidate: */
dcache_invalidate_all \aa, \ab
#endif /*writeback*/
// End of data cache writeback and invalidate
#endif
.endm
/*
* Lock (prefetch & lock) a single line of the data cache.
*
* Parameters are:
* ar address register that contains (virtual) address to lock
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to lock
* (note: some number of lsbits are ignored)
*/
.macro dcache_lock_line ar, offset
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_LINE_LOCKABLE
dpfl \ar, \offset /* prefetch and lock dcache line */
dcache_sync \ar
#endif
.endm
/*
* Lock (prefetch & lock) a specified portion of memory into the data cache.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro dcache_lock_region astart, asize, ac
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_LINE_LOCKABLE
// Data cache region lock:
cache_hit_region dpfl, XCHAL_DCACHE_LINEWIDTH, \astart, \asize, \ac
dcache_sync \ac
// End of data cache region lock
#endif
.endm
/*
* Unlock a single line of the data cache.
*
* Parameters are:
* ar address register that contains (virtual) address to unlock
* (may get clobbered in a future implementation, but not currently)
* offset offset to add to \ar to compute effective address to unlock
* (note: some number of lsbits are ignored)
*/
.macro dcache_unlock_line ar, offset
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_LINE_LOCKABLE
dhu \ar, \offset /* unlock dcache line */
dcache_sync \ar
#endif
.endm
/*
* Unlock a specified portion of memory from the data cache.
* Parameters are:
* astart start address (register gets clobbered)
* asize size of the region in bytes (register gets clobbered)
* ac unique register used as temporary
*/
.macro dcache_unlock_region astart, asize, ac
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_LINE_LOCKABLE
// Data cache region unlock:
cache_hit_region dhu, XCHAL_DCACHE_LINEWIDTH, \astart, \asize, \ac
dcache_sync \ac
// End of data cache region unlock
#endif
.endm
/*
* Unlock entire data cache.
*
* Parameters:
* aa, ab unique address registers (temporaries)
*/
.macro dcache_unlock_all aa, ab
#if XCHAL_DCACHE_SIZE > 0 && XCHAL_DCACHE_LINE_LOCKABLE
// Data cache unlock:
cache_index_all diu, XCHAL_DCACHE_SIZE, XCHAL_DCACHE_LINESIZE, 1, \aa, \ab
dcache_sync \aa
// End of data cache unlock
#endif
.endm
#endif /*XTENSA_CACHEASM_H*/

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#ifndef XTENSA_CACHEATTRASM_H
#define XTENSA_CACHEATTRASM_H
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/cacheattrasm.h -- assembler-specific
* CACHEATTR register related definitions that depend on CORE
* configuration.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/coreasm.h>
/*
* This header file defines assembler macros of the form:
* <x>cacheattr_<func>
* where:
* <x> is 'i', 'd' or absent for instruction, data
* or both caches; and
* <func> indicates the function of the macro.
*
* The following functions are defined:
*
* icacheattr_get
* Reads I-cache CACHEATTR into a2 (clobbers a3-a5).
*
* dcacheattr_get
* Reads D-cache CACHEATTR into a2 (clobbers a3-a5).
* (Note: for configs with a real CACHEATTR register, the
* above two macros are identical.)
*
* cacheattr_set
* Writes both I-cache and D-cache CACHEATTRs from a2 (a3-a8 clobbered).
* Works even when changing one's own code's attributes.
*
* icacheattr_is_enabled label
* Branches to \label if I-cache appears to have been enabled
* (eg. if CACHEATTR contains a cache-enabled attribute).
* (clobbers a2-a5,SAR)
*
* dcacheattr_is_enabled label
* Branches to \label if D-cache appears to have been enabled
* (eg. if CACHEATTR contains a cache-enabled attribute).
* (clobbers a2-a5,SAR)
*
* cacheattr_is_enabled label
* Branches to \label if either I-cache or D-cache appears to have been enabled
* (eg. if CACHEATTR contains a cache-enabled attribute).
* (clobbers a2-a5,SAR)
*
* The following macros are only defined under certain conditions:
*
* icacheattr_set (if XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR)
* Writes I-cache CACHEATTR from a2 (a3-a8 clobbered).
*
* dcacheattr_set (if XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR)
* Writes D-cache CACHEATTR from a2 (a3-a8 clobbered).
*/
/*************************** GENERIC -- ALL CACHES ***************************/
/*
* _cacheattr_get
*
* (Internal macro.)
* Returns value of CACHEATTR register (or closest equivalent) in a2.
*
* Entry:
* (none)
* Exit:
* a2 value read from CACHEATTR
* a3-a5 clobbered (temporaries)
*/
.macro _cacheattr_get tlb
#if XCHAL_HAVE_CACHEATTR
rsr a2, CACHEATTR
#elif XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
// We have a config that "mimics" CACHEATTR using a simplified
// "MMU" composed of a single statically-mapped way.
// DTLB and ITLB are independent, so there's no single
// cache attribute that can describe both. So for now
// just return the DTLB state.
movi a5, 0xE0000000
movi a2, 0
movi a3, 0
1: add a3, a3, a5 // next segment
r&tlb&1 a4, a3 // get PPN+CA of segment at 0xE0000000, 0xC0000000, ..., 0
dsync // interlock???
slli a2, a2, 4
extui a4, a4, 0, 4 // extract CA
or a2, a2, a4
bnez a3, 1b
#else
// This macro isn't applicable to arbitrary MMU configurations.
// Just return zero.
movi a2, 0
#endif
.endm
.macro icacheattr_get
_cacheattr_get itlb
.endm
.macro dcacheattr_get
_cacheattr_get dtlb
.endm
#define XCHAL_CACHEATTR_ALL_BYPASS 0x22222222 /* default (powerup/reset) value of CACHEATTR, all BYPASS
mode (ie. disabled/bypassed caches) */
#if XCHAL_HAVE_CACHEATTR || XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
#define XCHAL_FCA_ENAMASK 0x001A /* bitmap of fetch attributes that require enabled icache */
#define XCHAL_LCA_ENAMASK 0x0003 /* bitmap of load attributes that require enabled dcache */
#define XCHAL_SCA_ENAMASK 0x0003 /* bitmap of store attributes that require enabled dcache */
#define XCHAL_LSCA_ENAMASK (XCHAL_LCA_ENAMASK|XCHAL_SCA_ENAMASK) /* l/s attrs requiring enabled dcache */
#define XCHAL_ALLCA_ENAMASK (XCHAL_FCA_ENAMASK|XCHAL_LSCA_ENAMASK) /* all attrs requiring enabled caches */
/*
* _cacheattr_is_enabled
*
* (Internal macro.)
* Branches to \label if CACHEATTR in a2 indicates an enabled
* cache, using mask in a3.
*
* Parameters:
* label where to branch to if cache is enabled
* Entry:
* a2 contains CACHEATTR value used to determine whether
* caches are enabled
* a3 16-bit constant where each bit correspond to
* one of the 16 possible CA values (in a CACHEATTR mask);
* CA values that indicate the cache is enabled
* have their corresponding bit set in this mask
* (eg. use XCHAL_xCA_ENAMASK , above)
* Exit:
* a2,a4,a5 clobbered
* SAR clobbered
*/
.macro _cacheattr_is_enabled label
movi a4, 8 // loop 8 times
.Lcaife\@:
extui a5, a2, 0, 4 // get CA nibble
ssr a5 // index into mask according to CA...
srl a5, a3 // ...and get CA's mask bit in a5 bit 0
bbsi.l a5, 0, \label // if CA indicates cache enabled, jump to label
srli a2, a2, 4 // next nibble
addi a4, a4, -1
bnez a4, .Lcaife\@ // loop for each nibble
.endm
#else /* XCHAL_HAVE_CACHEATTR || XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR */
.macro _cacheattr_is_enabled label
j \label // macro not applicable, assume caches always enabled
.endm
#endif /* XCHAL_HAVE_CACHEATTR || XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR */
/*
* icacheattr_is_enabled
*
* Branches to \label if I-cache is enabled.
*
* Parameters:
* label where to branch to if icache is enabled
* Entry:
* (none)
* Exit:
* a2-a5, SAR clobbered (temporaries)
*/
.macro icacheattr_is_enabled label
#if XCHAL_HAVE_CACHEATTR || XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
icacheattr_get
movi a3, XCHAL_FCA_ENAMASK
#endif
_cacheattr_is_enabled \label
.endm
/*
* dcacheattr_is_enabled
*
* Branches to \label if D-cache is enabled.
*
* Parameters:
* label where to branch to if dcache is enabled
* Entry:
* (none)
* Exit:
* a2-a5, SAR clobbered (temporaries)
*/
.macro dcacheattr_is_enabled label
#if XCHAL_HAVE_CACHEATTR || XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
dcacheattr_get
movi a3, XCHAL_LSCA_ENAMASK
#endif
_cacheattr_is_enabled \label
.endm
/*
* cacheattr_is_enabled
*
* Branches to \label if either I-cache or D-cache is enabled.
*
* Parameters:
* label where to branch to if a cache is enabled
* Entry:
* (none)
* Exit:
* a2-a5, SAR clobbered (temporaries)
*/
.macro cacheattr_is_enabled label
#if XCHAL_HAVE_CACHEATTR
rsr a2, CACHEATTR
movi a3, XCHAL_ALLCA_ENAMASK
#elif XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
icacheattr_get
movi a3, XCHAL_FCA_ENAMASK
_cacheattr_is_enabled \label
dcacheattr_get
movi a3, XCHAL_LSCA_ENAMASK
#endif
_cacheattr_is_enabled \label
.endm
/*
* The ISA does not have a defined way to change the
* instruction cache attributes of the running code,
* ie. of the memory area that encloses the current PC.
* However, each micro-architecture (or class of
* configurations within a micro-architecture)
* provides a way to deal with this issue.
*
* Here are a few macros used to implement the relevant
* approach taken.
*/
#if XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
// We have a config that "mimics" CACHEATTR using a simplified
// "MMU" composed of a single statically-mapped way.
/*
* icacheattr_set
*
* Entry:
* a2 cacheattr value to set
* Exit:
* a2 unchanged
* a3-a8 clobbered (temporaries)
*/
.macro icacheattr_set
movi a5, 0xE0000000 // mask of upper 3 bits
movi a6, 3f // PC where ITLB is set
movi a3, 0 // start at region 0 (0 .. 7)
and a6, a6, a5 // upper 3 bits of local PC area
mov a7, a2 // copy a2 so it doesn't get clobbered
j 3f
# if XCHAL_HAVE_XLT_CACHEATTR
// Can do translations, use generic method:
1: sub a6, a3, a5 // address of some other segment
ritlb1 a8, a6 // save its PPN+CA
dsync // interlock??
witlb a4, a6 // make it translate to this code area
movi a6, 5f // where to jump into it
isync
sub a6, a6, a5 // adjust jump address within that other segment
jx a6
// Note that in the following code snippet, which runs at a different virtual
// address than it is assembled for, we avoid using literals (eg. via movi/l32r)
// just in case literals end up in a different 512 MB segment, and we avoid
// instructions that rely on the current PC being what is expected.
//
.align 4
_j 6f // this is at label '5' minus 4 bytes
.align 4
5: witlb a4, a3 // we're in other segment, now can write previous segment's CA
isync
add a6, a6, a5 // back to previous segment
addi a6, a6, -4 // next jump label
jx a6
6: sub a6, a3, a5 // address of some other segment
witlb a8, a6 // restore PPN+CA of other segment
mov a6, a3 // restore a6
isync
# else /* XCHAL_HAVE_XLT_CACHEATTR */
// Use micro-architecture specific method.
// The following 4-instruction sequence is aligned such that
// it all fits within a single I-cache line. Sixteen byte
// alignment is sufficient for this (using XCHAL_ICACHE_LINESIZE
// actually causes problems because that can be greater than
// the alignment of the reset vector, where this macro is often
// invoked, which would cause the linker to align the reset
// vector code away from the reset vector!!).
.align 16 /*XCHAL_ICACHE_LINESIZE*/
1: _witlb a4, a3 // write wired PTE (CA, no PPN) of 512MB segment to ITLB
_isync
nop
nop
# endif /* XCHAL_HAVE_XLT_CACHEATTR */
beq a3, a5, 4f // done?
// Note that in the WITLB loop, we don't do any load/stores
// (may not be an issue here, but it is important in the DTLB case).
2: srli a7, a7, 4 // next CA
sub a3, a3, a5 // next segment (add 0x20000000)
3:
# if XCHAL_HAVE_XLT_CACHEATTR /* if have translation, preserve it */
ritlb1 a8, a3 // get current PPN+CA of segment
dsync // interlock???
extui a4, a7, 0, 4 // extract CA to set
srli a8, a8, 4 // clear CA but keep PPN ...
slli a8, a8, 4 // ...
add a4, a4, a8 // combine new CA with PPN to preserve
# else
extui a4, a7, 0, 4 // extract CA
# endif
beq a3, a6, 1b // current PC's region? if so, do it in a safe way
witlb a4, a3 // write wired PTE (CA [+PPN]) of 512MB segment to ITLB
bne a3, a5, 2b
isync // make sure all ifetch changes take effect
4:
.endm // icacheattr_set
/*
* dcacheattr_set
*
* Entry:
* a2 cacheattr value to set
* Exit:
* a2 unchanged
* a3-a8 clobbered (temporaries)
*/
.macro dcacheattr_set
movi a5, 0xE0000000 // mask of upper 3 bits
movi a3, 0 // start at region 0 (0 .. 7)
mov a7, a2 // copy a2 so it doesn't get clobbered
j 3f
// Note that in the WDTLB loop, we don't do any load/stores
// (including implicit l32r via movi) because it isn't safe.
2: srli a7, a7, 4 // next CA
sub a3, a3, a5 // next segment (add 0x20000000)
3:
# if XCHAL_HAVE_XLT_CACHEATTR /* if have translation, preserve it */
rdtlb1 a8, a3 // get current PPN+CA of segment
dsync // interlock???
extui a4, a7, 0, 4 // extract CA to set
srli a8, a8, 4 // clear CA but keep PPN ...
slli a8, a8, 4 // ...
add a4, a4, a8 // combine new CA with PPN to preserve
# else
extui a4, a7, 0, 4 // extract CA to set
# endif
wdtlb a4, a3 // write wired PTE (CA [+PPN]) of 512MB segment to DTLB
bne a3, a5, 2b
dsync // make sure all data path changes take effect
.endm // dcacheattr_set
#endif /* XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR */
/*
* cacheattr_set
*
* Macro that sets the current CACHEATTR safely
* (both i and d) according to the current contents of a2.
* It works even when changing the cache attributes of
* the currently running code.
*
* Entry:
* a2 cacheattr value to set
* Exit:
* a2 unchanged
* a3-a8 clobbered (temporaries)
*/
.macro cacheattr_set
#if XCHAL_HAVE_CACHEATTR
# if XCHAL_ICACHE_LINESIZE < 4
// No i-cache, so can always safely write to CACHEATTR:
wsr a2, CACHEATTR
# else
// The Athens micro-architecture, when using the old
// exception architecture option (ie. with the CACHEATTR register)
// allows changing the cache attributes of the running code
// using the following exact sequence aligned to be within
// an instruction cache line. (NOTE: using XCHAL_ICACHE_LINESIZE
// alignment actually causes problems because that can be greater
// than the alignment of the reset vector, where this macro is often
// invoked, which would cause the linker to align the reset
// vector code away from the reset vector!!).
j 1f
.align 16 /*XCHAL_ICACHE_LINESIZE*/ // align to within an I-cache line
1: _wsr a2, CACHEATTR
_isync
nop
nop
# endif
#elif XCHAL_HAVE_MIMIC_CACHEATTR || XCHAL_HAVE_XLT_CACHEATTR
// DTLB and ITLB are independent, but to keep semantics
// of this macro we simply write to both.
icacheattr_set
dcacheattr_set
#else
// This macro isn't applicable to arbitrary MMU configurations.
// Do nothing in this case.
#endif
.endm
#endif /*XTENSA_CACHEATTRASM_H*/

1270
include/asm-xtensa/xtensa/config-linux_be/core.h
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270
include/asm-xtensa/xtensa/config-linux_be/defs.h
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/* Definitions for Xtensa instructions, types, and protos. */
/*
* Copyright (c) 2003 Tensilica, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*/
/* Do not modify. This is automatically generated.*/
#ifndef _XTENSA_BASE_HEADER
#define _XTENSA_BASE_HEADER
#ifdef __XTENSA__
#if defined(__GNUC__) && !defined(__XCC__)
#define L8UI_ASM(arr, ars, imm) { \
__asm__ volatile("l8ui %0, %1, %2" : "=a" (arr) : "a" (ars) , "i" (imm)); \
}
#define XT_L8UI(ars, imm) \
({ \
unsigned char _arr; \
const unsigned char *_ars = ars; \
L8UI_ASM(_arr, _ars, imm); \
_arr; \
})
#define L16UI_ASM(arr, ars, imm) { \
__asm__ volatile("l16ui %0, %1, %2" : "=a" (arr) : "a" (ars) , "i" (imm)); \
}
#define XT_L16UI(ars, imm) \
({ \
unsigned short _arr; \
const unsigned short *_ars = ars; \
L16UI_ASM(_arr, _ars, imm); \
_arr; \
})
#define L16SI_ASM(arr, ars, imm) {\
__asm__ volatile("l16si %0, %1, %2" : "=a" (arr) : "a" (ars) , "i" (imm)); \
}
#define XT_L16SI(ars, imm) \
({ \
signed short _arr; \
const signed short *_ars = ars; \
L16SI_ASM(_arr, _ars, imm); \
_arr; \
})
#define L32I_ASM(arr, ars, imm) { \
__asm__ volatile("l32i %0, %1, %2" : "=a" (arr) : "a" (ars) , "i" (imm)); \
}
#define XT_L32I(ars, imm) \
({ \
unsigned _arr; \
const unsigned *_ars = ars; \
L32I_ASM(_arr, _ars, imm); \
_arr; \
})
#define S8I_ASM(arr, ars, imm) {\
__asm__ volatile("s8i %0, %1, %2" : : "a" (arr), "a" (ars) , "i" (imm) : "memory" ); \
}
#define XT_S8I(arr, ars, imm) \
({ \
signed char _arr = arr; \
const signed char *_ars = ars; \
S8I_ASM(_arr, _ars, imm); \
})
#define S16I_ASM(arr, ars, imm) {\
__asm__ volatile("s16i %0, %1, %2" : : "a" (arr), "a" (ars) , "i" (imm) : "memory" ); \
}
#define XT_S16I(arr, ars, imm) \
({ \
signed short _arr = arr; \
const signed short *_ars = ars; \
S16I_ASM(_arr, _ars, imm); \
})
#define S32I_ASM(arr, ars, imm) { \
__asm__ volatile("s32i %0, %1, %2" : : "a" (arr), "a" (ars) , "i" (imm) : "memory" ); \
}
#define XT_S32I(arr, ars, imm) \
({ \
signed int _arr = arr; \
const signed int *_ars = ars; \
S32I_ASM(_arr, _ars, imm); \
})
#define ADDI_ASM(art, ars, imm) {\
__asm__ ("addi %0, %1, %2" : "=a" (art) : "a" (ars), "i" (imm)); \
}
#define XT_ADDI(ars, imm) \
({ \
unsigned _art; \
unsigned _ars = ars; \
ADDI_ASM(_art, _ars, imm); \
_art; \
})
#define ABS_ASM(arr, art) {\
__asm__ ("abs %0, %1" : "=a" (arr) : "a" (art)); \
}
#define XT_ABS(art) \
({ \
unsigned _arr; \
signed _art = art; \
ABS_ASM(_arr, _art); \
_arr; \
})
/* Note: In the following macros that reference SAR, the magic "state"
register is used to capture the dependency on SAR. This is because
SAR is a 5-bit register and thus there are no C types that can be
used to represent it. It doesn't appear that the SAR register is
even relevant to GCC, but it is marked as "clobbered" just in
case. */
#define SRC_ASM(arr, ars, art) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("src %0, %1, %2" \
: "=a" (arr) : "a" (ars), "a" (art), "t" (_xt_sar)); \
}
#define XT_SRC(ars, art) \
({ \
unsigned _arr; \
unsigned _ars = ars; \
unsigned _art = art; \
SRC_ASM(_arr, _ars, _art); \
_arr; \
})
#define SSR_ASM(ars) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("ssr %1" : "=t" (_xt_sar) : "a" (ars) : "sar"); \
}
#define XT_SSR(ars) \
({ \
unsigned _ars = ars; \
SSR_ASM(_ars); \
})
#define SSL_ASM(ars) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("ssl %1" : "=t" (_xt_sar) : "a" (ars) : "sar"); \
}
#define XT_SSL(ars) \
({ \
unsigned _ars = ars; \
SSL_ASM(_ars); \
})
#define SSA8B_ASM(ars) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("ssa8b %1" : "=t" (_xt_sar) : "a" (ars) : "sar"); \
}
#define XT_SSA8B(ars) \
({ \
unsigned _ars = ars; \
SSA8B_ASM(_ars); \
})
#define SSA8L_ASM(ars) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("ssa8l %1" : "=t" (_xt_sar) : "a" (ars) : "sar"); \
}
#define XT_SSA8L(ars) \
({ \
unsigned _ars = ars; \
SSA8L_ASM(_ars); \
})
#define SSAI_ASM(imm) {\
register int _xt_sar __asm__ ("state"); \
__asm__ ("ssai %1" : "=t" (_xt_sar) : "i" (imm) : "sar"); \
}
#define XT_SSAI(imm) \
({ \
SSAI_ASM(imm); \
})
#endif /* __GNUC__ && !__XCC__ */
#ifdef __XCC__
/* Core load/store instructions */
extern unsigned char _TIE_L8UI(const unsigned char * ars, immediate imm);
extern unsigned short _TIE_L16UI(const unsigned short * ars, immediate imm);
extern signed short _TIE_L16SI(const signed short * ars, immediate imm);
extern unsigned _TIE_L32I(const unsigned * ars, immediate imm);
extern void _TIE_S8I(unsigned char arr, unsigned char * ars, immediate imm);
extern void _TIE_S16I(unsigned short arr, unsigned short * ars, immediate imm);
extern void _TIE_S32I(unsigned arr, unsigned * ars, immediate imm);
#define XT_L8UI _TIE_L8UI
#define XT_L16UI _TIE_L16UI
#define XT_L16SI _TIE_L16SI
#define XT_L32I _TIE_L32I
#define XT_S8I _TIE_S8I
#define XT_S16I _TIE_S16I
#define XT_S32I _TIE_S32I
/* Add-immediate instruction */
extern unsigned _TIE_ADDI(unsigned ars, immediate imm);
#define XT_ADDI _TIE_ADDI
/* Absolute value instruction */
extern unsigned _TIE_ABS(int art);
#define XT_ABS _TIE_ABS
/* funnel shift instructions */
extern unsigned _TIE_SRC(unsigned ars, unsigned art);
#define XT_SRC _TIE_SRC
extern void _TIE_SSR(unsigned ars);
#define XT_SSR _TIE_SSR
extern void _TIE_SSL(unsigned ars);
#define XT_SSL _TIE_SSL
extern void _TIE_SSA8B(unsigned ars);
#define XT_SSA8B _TIE_SSA8B
extern void _TIE_SSA8L(unsigned ars);
#define XT_SSA8L _TIE_SSA8L
extern void _TIE_SSAI(immediate imm);
#define XT_SSAI _TIE_SSAI
#endif /* __XCC__ */
#endif /* __XTENSA__ */
#endif /* !_XTENSA_BASE_HEADER */

99
include/asm-xtensa/xtensa/config-linux_be/specreg.h
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@ -1,99 +0,0 @@
/*
* Xtensa Special Register symbolic names
*/
/* $Id: specreg.h,v 1.2 2003/03/07 19:15:18 joetaylor Exp $ */
/*
* Copyright (c) 2003 Tensilica, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*/
#ifndef XTENSA_SPECREG_H
#define XTENSA_SPECREG_H
/* Include these special register bitfield definitions, for historical reasons: */
#include <xtensa/corebits.h>
/* Special registers: */
#define LBEG 0
#define LEND 1
#define LCOUNT 2
#define SAR 3
#define WINDOWBASE 72
#define WINDOWSTART 73
#define PTEVADDR 83
#define RASID 90
#define ITLBCFG 91
#define DTLBCFG 92
#define IBREAKENABLE 96
#define DDR 104
#define IBREAKA_0 128
#define IBREAKA_1 129
#define DBREAKA_0 144
#define DBREAKA_1 145
#define DBREAKC_0 160
#define DBREAKC_1 161
#define EPC_1 177
#define EPC_2 178
#define EPC_3 179
#define EPC_4 180
#define DEPC 192
#define EPS_2 194
#define EPS_3 195
#define EPS_4 196
#define EXCSAVE_1 209
#define EXCSAVE_2 210
#define EXCSAVE_3 211
#define EXCSAVE_4 212
#define INTERRUPT 226
#define INTENABLE 228
#define PS 230
#define EXCCAUSE 232
#define DEBUGCAUSE 233
#define CCOUNT 234
#define ICOUNT 236
#define ICOUNTLEVEL 237
#define EXCVADDR 238
#define CCOMPARE_0 240
#define CCOMPARE_1 241
#define CCOMPARE_2 242
#define MISC_REG_0 244
#define MISC_REG_1 245
/* Special cases (bases of special register series): */
#define IBREAKA 128
#define DBREAKA 144
#define DBREAKC 160
#define EPC 176
#define EPS 192
#define EXCSAVE 208
#define CCOMPARE 240
/* Special names for read-only and write-only interrupt registers: */
#define INTREAD 226
#define INTSET 226
#define INTCLEAR 227
#endif /* XTENSA_SPECREG_H */

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include/asm-xtensa/xtensa/config-linux_be/system.h
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/*
* xtensa/config/system.h -- HAL definitions that are dependent on SYSTEM configuration
*
* NOTE: The location and contents of this file are highly subject to change.
*
* Source for configuration-independent binaries (which link in a
* configuration-specific HAL library) must NEVER include this file.
* The HAL itself has historically included this file in some instances,
* but this is not appropriate either, because the HAL is meant to be
* core-specific but system independent.
*/
/*
* Copyright (c) 2003 Tensilica, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*/
#ifndef XTENSA_CONFIG_SYSTEM_H
#define XTENSA_CONFIG_SYSTEM_H
/*#include <xtensa/hal.h>*/
/*----------------------------------------------------------------------
DEVICE ADDRESSES
----------------------------------------------------------------------*/
/*
* Strange place to find these, but the configuration GUI
* allows moving these around to account for various core
* configurations. Specific boards (and their BSP software)
* will have specific meanings for these components.
*/
/* I/O Block areas: */
#define XSHAL_IOBLOCK_CACHED_VADDR 0xE0000000
#define XSHAL_IOBLOCK_CACHED_PADDR 0xF0000000
#define XSHAL_IOBLOCK_CACHED_SIZE 0x0E000000
#define XSHAL_IOBLOCK_BYPASS_VADDR 0xF0000000
#define XSHAL_IOBLOCK_BYPASS_PADDR 0xF0000000
#define XSHAL_IOBLOCK_BYPASS_SIZE 0x0E000000
/* System ROM: */
#define XSHAL_ROM_VADDR 0xEE000000
#define XSHAL_ROM_PADDR 0xFE000000
#define XSHAL_ROM_SIZE 0x00400000
/* Largest available area (free of vectors): */
#define XSHAL_ROM_AVAIL_VADDR 0xEE00052C
#define XSHAL_ROM_AVAIL_VSIZE 0x003FFAD4
/* System RAM: */
#define XSHAL_RAM_VADDR 0xD0000000
#define XSHAL_RAM_PADDR 0x00000000
#define XSHAL_RAM_VSIZE 0x08000000
#define XSHAL_RAM_PSIZE 0x10000000
#define XSHAL_RAM_SIZE XSHAL_RAM_PSIZE
/* Largest available area (free of vectors): */
#define XSHAL_RAM_AVAIL_VADDR 0xD0000370
#define XSHAL_RAM_AVAIL_VSIZE 0x07FFFC90
/*
* Shadow system RAM (same device as system RAM, at different address).
* (Emulation boards need this for the SONIC Ethernet driver
* when data caches are configured for writeback mode.)
* NOTE: on full MMU configs, this points to the BYPASS virtual address
* of system RAM, ie. is the same as XSHAL_RAM_* except that virtual
* addresses are viewed through the BYPASS static map rather than
* the CACHED static map.
*/
#define XSHAL_RAM_BYPASS_VADDR 0xD8000000
#define XSHAL_RAM_BYPASS_PADDR 0x00000000
#define XSHAL_RAM_BYPASS_PSIZE 0x08000000
/* Alternate system RAM (different device than system RAM): */
#define XSHAL_ALTRAM_VADDR 0xCEE00000
#define XSHAL_ALTRAM_PADDR 0xC0000000
#define XSHAL_ALTRAM_SIZE 0x00200000
/*----------------------------------------------------------------------
* DEVICE-ADDRESS DEPENDENT...
*
* Values written to CACHEATTR special register (or its equivalent)
* to enable and disable caches in various modes.
*----------------------------------------------------------------------*/
/*----------------------------------------------------------------------
BACKWARD COMPATIBILITY ...
----------------------------------------------------------------------*/
/*
* NOTE: the following two macros are DEPRECATED. Use the latter
* board-specific macros instead, which are specially tuned for the
* particular target environments' memory maps.
*/
#define XSHAL_CACHEATTR_BYPASS XSHAL_XT2000_CACHEATTR_BYPASS /* disable caches in bypass mode */
#define XSHAL_CACHEATTR_DEFAULT XSHAL_XT2000_CACHEATTR_DEFAULT /* default setting to enable caches (no writeback!) */
/*----------------------------------------------------------------------
ISS (Instruction Set Simulator) SPECIFIC ...
----------------------------------------------------------------------*/
#define XSHAL_ISS_CACHEATTR_WRITEBACK 0x1122222F /* enable caches in write-back mode */
#define XSHAL_ISS_CACHEATTR_WRITEALLOC 0x1122222F /* enable caches in write-allocate mode */
#define XSHAL_ISS_CACHEATTR_WRITETHRU 0x1122222F /* enable caches in write-through mode */
#define XSHAL_ISS_CACHEATTR_BYPASS 0x2222222F /* disable caches in bypass mode */
#define XSHAL_ISS_CACHEATTR_DEFAULT XSHAL_ISS_CACHEATTR_WRITEBACK /* default setting to enable caches */
/* For Coware only: */
#define XSHAL_COWARE_CACHEATTR_WRITEBACK 0x11222222 /* enable caches in write-back mode */
#define XSHAL_COWARE_CACHEATTR_WRITEALLOC 0x11222222 /* enable caches in write-allocate mode */
#define XSHAL_COWARE_CACHEATTR_WRITETHRU 0x11222222 /* enable caches in write-through mode */
#define XSHAL_COWARE_CACHEATTR_BYPASS 0x22222222 /* disable caches in bypass mode */
#define XSHAL_COWARE_CACHEATTR_DEFAULT XSHAL_COWARE_CACHEATTR_WRITEBACK /* default setting to enable caches */
/* For BFM and other purposes: */
#define XSHAL_ALLVALID_CACHEATTR_WRITEBACK 0x11222222 /* enable caches without any invalid regions */
#define XSHAL_ALLVALID_CACHEATTR_DEFAULT XSHAL_ALLVALID_CACHEATTR_WRITEBACK /* default setting for caches without any invalid regions */
#define XSHAL_ISS_PIPE_REGIONS 0
#define XSHAL_ISS_SDRAM_REGIONS 0
/*----------------------------------------------------------------------
XT2000 BOARD SPECIFIC ...
----------------------------------------------------------------------*/
#define XSHAL_XT2000_CACHEATTR_WRITEBACK 0x22FFFFFF /* enable caches in write-back mode */
#define XSHAL_XT2000_CACHEATTR_WRITEALLOC 0x22FFFFFF /* enable caches in write-allocate mode */
#define XSHAL_XT2000_CACHEATTR_WRITETHRU 0x22FFFFFF /* enable caches in write-through mode */
#define XSHAL_XT2000_CACHEATTR_BYPASS 0x22FFFFFF /* disable caches in bypass mode */
#define XSHAL_XT2000_CACHEATTR_DEFAULT XSHAL_XT2000_CACHEATTR_WRITEBACK /* default setting to enable caches */
#define XSHAL_XT2000_PIPE_REGIONS 0x00001000 /* BusInt pipeline regions */
#define XSHAL_XT2000_SDRAM_REGIONS 0x00000005 /* BusInt SDRAM regions */
/*----------------------------------------------------------------------
VECTOR SIZES
----------------------------------------------------------------------*/
/*
* Sizes allocated to vectors by the system (memory map) configuration.
* These sizes are constrained by core configuration (eg. one vector's
* code cannot overflow into another vector) but are dependent on the
* system or board (or LSP) memory map configuration.
*
* Whether or not each vector happens to be in a system ROM is also
* a system configuration matter, sometimes useful, included here also:
*/
#define XSHAL_RESET_VECTOR_SIZE 0x000004E0
#define XSHAL_RESET_VECTOR_ISROM 1
#define XSHAL_USER_VECTOR_SIZE 0x0000001C
#define XSHAL_USER_VECTOR_ISROM 0
#define XSHAL_PROGRAMEXC_VECTOR_SIZE XSHAL_USER_VECTOR_SIZE /* for backward compatibility */
#define XSHAL_USEREXC_VECTOR_SIZE XSHAL_USER_VECTOR_SIZE /* for backward compatibility */
#define XSHAL_KERNEL_VECTOR_SIZE 0x0000001C
#define XSHAL_KERNEL_VECTOR_ISROM 0
#define XSHAL_STACKEDEXC_VECTOR_SIZE XSHAL_KERNEL_VECTOR_SIZE /* for backward compatibility */
#define XSHAL_KERNELEXC_VECTOR_SIZE XSHAL_KERNEL_VECTOR_SIZE /* for backward compatibility */
#define XSHAL_DOUBLEEXC_VECTOR_SIZE 0x000000E0
#define XSHAL_DOUBLEEXC_VECTOR_ISROM 0
#define XSHAL_WINDOW_VECTORS_SIZE 0x00000180
#define XSHAL_WINDOW_VECTORS_ISROM 0
#define XSHAL_INTLEVEL2_VECTOR_SIZE 0x0000000C
#define XSHAL_INTLEVEL2_VECTOR_ISROM 0
#define XSHAL_INTLEVEL3_VECTOR_SIZE 0x0000000C
#define XSHAL_INTLEVEL3_VECTOR_ISROM 0
#define XSHAL_INTLEVEL4_VECTOR_SIZE 0x0000000C
#define XSHAL_INTLEVEL4_VECTOR_ISROM 1
#define XSHAL_DEBUG_VECTOR_SIZE XSHAL_INTLEVEL4_VECTOR_SIZE
#define XSHAL_DEBUG_VECTOR_ISROM XSHAL_INTLEVEL4_VECTOR_ISROM
#endif /*XTENSA_CONFIG_SYSTEM_H*/

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include/asm-xtensa/xtensa/config-linux_be/tie.h
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/*
* xtensa/config/tie.h -- HAL definitions that are dependent on CORE and TIE configuration
*
* This header file is sometimes referred to as the "compile-time HAL" or CHAL.
* It was generated for a specific Xtensa processor configuration,
* and furthermore for a specific set of TIE source files that extend
* basic core functionality.
*
* Source for configuration-independent binaries (which link in a
* configuration-specific HAL library) must NEVER include this file.
* It is perfectly normal, however, for the HAL source itself to include this file.
*/
/*
* Copyright (c) 2003 Tensilica, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2.1 of the GNU Lesser General Public
* License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
* USA.
*/
#ifndef XTENSA_CONFIG_TIE_H
#define XTENSA_CONFIG_TIE_H
#include <xtensa/hal.h>
/*----------------------------------------------------------------------
GENERAL
----------------------------------------------------------------------*/
/*
* Separators for macros that expand into arrays.
* These can be predefined by files that #include this one,
* when different separators are required.
*/
/* Element separator for macros that expand into 1-dimensional arrays: */
#ifndef XCHAL_SEP
#define XCHAL_SEP ,
#endif
/* Array separator for macros that expand into 2-dimensional arrays: */
#ifndef XCHAL_SEP2
#define XCHAL_SEP2 },{
#endif
/*----------------------------------------------------------------------
COPROCESSORS and EXTRA STATE
----------------------------------------------------------------------*/
#define XCHAL_CP_NUM 0 /* number of coprocessors */
#define XCHAL_CP_MAX 0 /* max coprocessor id plus one (0 if none) */
#define XCHAL_CP_MASK 0x00 /* bitmask of coprocessors by id */
/* Space for coprocessors' state save areas: */
#define XCHAL_CP0_SA_SIZE 0
#define XCHAL_CP1_SA_SIZE 0
#define XCHAL_CP2_SA_SIZE 0
#define XCHAL_CP3_SA_SIZE 0
#define XCHAL_CP4_SA_SIZE 0
#define XCHAL_CP5_SA_SIZE 0
#define XCHAL_CP6_SA_SIZE 0
#define XCHAL_CP7_SA_SIZE 0
/* Minimum required alignments of CP state save areas: */
#define XCHAL_CP0_SA_ALIGN 1
#define XCHAL_CP1_SA_ALIGN 1
#define XCHAL_CP2_SA_ALIGN 1
#define XCHAL_CP3_SA_ALIGN 1
#define XCHAL_CP4_SA_ALIGN 1
#define XCHAL_CP5_SA_ALIGN 1
#define XCHAL_CP6_SA_ALIGN 1
#define XCHAL_CP7_SA_ALIGN 1
/* Indexing macros: */
#define _XCHAL_CP_SA_SIZE(n) XCHAL_CP ## n ## _SA_SIZE
#define XCHAL_CP_SA_SIZE(n) _XCHAL_CP_SA_SIZE(n) /* n = 0 .. 7 */
#define _XCHAL_CP_SA_ALIGN(n) XCHAL_CP ## n ## _SA_ALIGN
#define XCHAL_CP_SA_ALIGN(n) _XCHAL_CP_SA_ALIGN(n) /* n = 0 .. 7 */
/* Space for "extra" state (user special registers and non-cp TIE) save area: */
#define XCHAL_EXTRA_SA_SIZE 0
#define XCHAL_EXTRA_SA_ALIGN 1
/* Total save area size (extra + all coprocessors) */
/* (not useful until xthal_{save,restore}_all_extra() is implemented, */
/* but included for Tor2 beta; doesn't account for alignment!): */
#define XCHAL_CPEXTRA_SA_SIZE_TOR2 0 /* Tor2Beta temporary definition -- do not use */
/* Combined required alignment for all CP and EXTRA state save areas */
/* (does not include required alignment for any base config registers): */
#define XCHAL_CPEXTRA_SA_ALIGN 1
/* ... */
#ifdef __ASSEMBLER__
/*
* Assembly-language specific definitions (assembly macros, etc.).
*/
#include <xtensa/config/specreg.h>
/********************
* Macros to save and restore the non-coprocessor TIE portion of EXTRA state.
*/
/* (none) */
/********************
* Macros to create functions that save and restore all EXTRA (non-coprocessor) state
* (does not include zero-overhead loop registers and non-optional registers).
*/
/*
* Macro that expands to the body of a function that
* stores the extra (non-coprocessor) optional/custom state.
* Entry: a2 = ptr to save area in which to save extra state
* Exit: any register a2-a15 (?) may have been clobbered.
*/
.macro xchal_extra_store_funcbody
.endm
/*
* Macro that expands to the body of a function that
* loads the extra (non-coprocessor) optional/custom state.
* Entry: a2 = ptr to save area from which to restore extra state
* Exit: any register a2-a15 (?) may have been clobbered.
*/
.macro xchal_extra_load_funcbody
.endm
/********************
* Macros to save and restore the state of each TIE coprocessor.
*/
/********************
* Macros to create functions that save and restore the state of *any* TIE coprocessor.
*/
/*
* Macro that expands to the body of a function
* that stores the selected coprocessor's state (registers etc).
* Entry: a2 = ptr to save area in which to save cp state
* a3 = coprocessor number
* Exit: any register a2-a15 (?) may have been clobbered.
*/
.macro xchal_cpi_store_funcbody
.endm
/*
* Macro that expands to the body of a function
* that loads the selected coprocessor's state (registers etc).
* Entry: a2 = ptr to save area from which to restore cp state
* a3 = coprocessor number
* Exit: any register a2-a15 (?) may have been clobbered.
*/
.macro xchal_cpi_load_funcbody
.endm
#endif /*_ASMLANGUAGE*/
/*
* Contents of save areas in terms of libdb register numbers.
* NOTE: CONTENTS_LIBDB_{UREG,REGF} macros are not defined in this file;
* it is up to the user of this header file to define these macros
* usefully before each expansion of the CONTENTS_LIBDB macros.
* (Fields rsv[123] are reserved for future additions; they are currently
* set to zero but may be set to some useful values in the future.)
*
* CONTENTS_LIBDB_SREG(libdbnum, offset, size, align, rsv1, name, sregnum, bitmask, rsv2, rsv3)
* CONTENTS_LIBDB_UREG(libdbnum, offset, size, align, rsv1, name, uregnum, bitmask, rsv2, rsv3)
* CONTENTS_LIBDB_REGF(libdbnum, offset, size, align, rsv1, name, index, numentries, contentsize, regname_base, regfile_name, rsv2, rsv3)
*/
#define XCHAL_EXTRA_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_EXTRA_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP0_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP0_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP1_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP1_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP2_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP2_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP3_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP3_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP4_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP4_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP5_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP5_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP6_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP6_SA_CONTENTS_LIBDB /* empty */
#define XCHAL_CP7_SA_CONTENTS_LIBDB_NUM 0
#define XCHAL_CP7_SA_CONTENTS_LIBDB /* empty */
/*----------------------------------------------------------------------
MISC
----------------------------------------------------------------------*/
#if 0 /* is there something equivalent for user TIE? */
#define XCHAL_CORE_ID "linux_be" /* configuration's alphanumeric core identifier
(CoreID) set in the Xtensa Processor Generator */
#define XCHAL_BUILD_UNIQUE_ID 0x00003256 /* software build-unique ID (22-bit) */
/* These definitions describe the hardware targeted by this software: */
#define XCHAL_HW_CONFIGID0 0xC103D1FF /* config ID reg 0 value (upper 32 of 64 bits) */
#define XCHAL_HW_CONFIGID1 0x00803256 /* config ID reg 1 value (lower 32 of 64 bits) */
#define XCHAL_CONFIGID0 XCHAL_HW_CONFIGID0 /* for backward compatibility only -- don't use! */
#define XCHAL_CONFIGID1 XCHAL_HW_CONFIGID1 /* for backward compatibility only -- don't use! */
#define XCHAL_HW_RELEASE_MAJOR 1050 /* major release of targeted hardware */
#define XCHAL_HW_RELEASE_MINOR 1 /* minor release of targeted hardware */
#define XCHAL_HW_RELEASE_NAME "T1050.1" /* full release name of targeted hardware */
#define XTHAL_HW_REL_T1050 1
#define XTHAL_HW_REL_T1050_1 1
#define XCHAL_HW_CONFIGID_RELIABLE 1
#endif /*0*/
/*----------------------------------------------------------------------
ISA
----------------------------------------------------------------------*/
#if 0 /* these probably don't belong here, but are related to or implemented using TIE */
#define XCHAL_HAVE_BOOLEANS 0 /* 1 if booleans option configured, 0 otherwise */
/* Misc instructions: */
#define XCHAL_HAVE_MUL32 0 /* 1 if 32-bit integer multiply option configured, 0 otherwise */
#define XCHAL_HAVE_MUL32_HIGH 0 /* 1 if MUL32 option includes MULUH and MULSH, 0 otherwise */
#define XCHAL_HAVE_FP 0 /* 1 if floating point option configured, 0 otherwise */
#endif /*0*/
#endif /*XTENSA_CONFIG_TIE_H*/

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include/asm-xtensa/xtensa/coreasm.h
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#ifndef XTENSA_COREASM_H
#define XTENSA_COREASM_H
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/coreasm.h -- assembler-specific
* definitions that depend on CORE configuration.
*
* Source for configuration-independent binaries (which link in a
* configuration-specific HAL library) must NEVER include this file.
* It is perfectly normal, however, for the HAL itself to include this
* file.
*
* This file must NOT include xtensa/config/system.h. Any assembler
* header file that depends on system information should likely go in
* a new systemasm.h (or sysasm.h) header file.
*
* NOTE: macro beqi32 is NOT configuration-dependent, and is placed
* here til we will have configuration-independent header file.
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of
* this archive for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/config/core.h>
#include <xtensa/config/specreg.h>
/*
* Assembly-language specific definitions (assembly macros, etc.).
*/
/*----------------------------------------------------------------------
* find_ms_setbit
*
* This macro finds the most significant bit that is set in <as>
* and return its index + <base> in <ad>, or <base> - 1 if <as> is zero.
* The index counts starting at zero for the lsbit, so the return
* value ranges from <base>-1 (no bit set) to <base>+31 (msbit set).
*
* Parameters:
* <ad> destination address register (any register)
* <as> source address register
* <at> temporary address register (must be different than <as>)
* <base> constant value added to result (usually 0 or 1)
* On entry:
* <ad> = undefined if different than <as>
* <as> = value whose most significant set bit is to be found
* <at> = undefined
* no other registers are used by this macro.
* On exit:
* <ad> = <base> + index of msbit set in original <as>,
* = <base> - 1 if original <as> was zero.
* <as> clobbered (if not <ad>)
* <at> clobbered (if not <ad>)
* Example:
* find_ms_setbit a0, a4, a0, 0 -- return in a0 index of msbit set in a4
*/
.macro find_ms_setbit ad, as, at, base
#if XCHAL_HAVE_NSA
movi \at, 31+\base
nsau \as, \as // get index of \as, numbered from msbit (32 if absent)
sub \ad, \at, \as // get numbering from lsbit (0..31, -1 if absent)
#else /* XCHAL_HAVE_NSA */
movi \at, \base // start with result of 0 (point to lsbit of 32)
beqz \as, 2f // special case for zero argument: return -1
bltui \as, 0x10000, 1f // is it one of the 16 lsbits? (if so, check lower 16 bits)
addi \at, \at, 16 // no, increment result to upper 16 bits (of 32)
//srli \as, \as, 16 // check upper half (shift right 16 bits)
extui \as, \as, 16, 16 // check upper half (shift right 16 bits)
1: bltui \as, 0x100, 1f // is it one of the 8 lsbits? (if so, check lower 8 bits)
addi \at, \at, 8 // no, increment result to upper 8 bits (of 16)
srli \as, \as, 8 // shift right to check upper 8 bits
1: bltui \as, 0x10, 1f // is it one of the 4 lsbits? (if so, check lower 4 bits)
addi \at, \at, 4 // no, increment result to upper 4 bits (of 8)
srli \as, \as, 4 // shift right 4 bits to check upper half
1: bltui \as, 0x4, 1f // is it one of the 2 lsbits? (if so, check lower 2 bits)
addi \at, \at, 2 // no, increment result to upper 2 bits (of 4)
srli \as, \as, 2 // shift right 2 bits to check upper half
1: bltui \as, 0x2, 1f // is it the lsbit?
addi \at, \at, 2 // no, increment result to upper bit (of 2)
2: addi \at, \at, -1 // (from just above: add 1; from beqz: return -1)
//srli \as, \as, 1
1: // done! \at contains index of msbit set (or -1 if none set)
.if 0x\ad - 0x\at // destination different than \at ? (works because regs are a0-a15)
mov \ad, \at // then move result to \ad
.endif
#endif /* XCHAL_HAVE_NSA */
.endm // find_ms_setbit
/*----------------------------------------------------------------------
* find_ls_setbit
*
* This macro finds the least significant bit that is set in <as>,
* and return its index in <ad>.
* Usage is the same as for the find_ms_setbit macro.
* Example:
* find_ls_setbit a0, a4, a0, 0 -- return in a0 index of lsbit set in a4
*/
.macro find_ls_setbit ad, as, at, base
neg \at, \as // keep only the least-significant bit that is set...
and \as, \at, \as // ... in \as
find_ms_setbit \ad, \as, \at, \base
.endm // find_ls_setbit
/*----------------------------------------------------------------------
* find_ls_one
*
* Same as find_ls_setbit with base zero.
* Source (as) and destination (ad) registers must be different.
* Provided for backward compatibility.
*/
.macro find_ls_one ad, as
find_ls_setbit \ad, \as, \ad, 0
.endm // find_ls_one
/*----------------------------------------------------------------------
* floop, floopnez, floopgtz, floopend
*
* These macros are used for fast inner loops that
* work whether or not the Loops options is configured.
* If the Loops option is configured, they simply use
* the zero-overhead LOOP instructions; otherwise
* they use explicit decrement and branch instructions.
*
* They are used in pairs, with floop, floopnez or floopgtz
* at the beginning of the loop, and floopend at the end.
*
* Each pair of loop macro calls must be given the loop count
* address register and a unique label for that loop.
*
* Example:
*
* movi a3, 16 // loop 16 times
* floop a3, myloop1
* :
* bnez a7, end1 // exit loop if a7 != 0
* :
* floopend a3, myloop1
* end1:
*
* Like the LOOP instructions, these macros cannot be
* nested, must include at least one instruction,
* cannot call functions inside the loop, etc.
* The loop can be exited by jumping to the instruction
* following floopend (or elsewhere outside the loop),
* or continued by jumping to a NOP instruction placed
* immediately before floopend.
*
* Unlike LOOP instructions, the register passed to floop*
* cannot be used inside the loop, because it is used as
* the loop counter if the Loops option is not configured.
* And its value is undefined after exiting the loop.
* And because the loop counter register is active inside
* the loop, you can't easily use this construct to loop
* across a register file using ROTW as you might with LOOP
* instructions, unless you copy the loop register along.
*/
/* Named label version of the macros: */
.macro floop ar, endlabel
floop_ \ar, .Lfloopstart_\endlabel, .Lfloopend_\endlabel
.endm
.macro floopnez ar, endlabel
floopnez_ \ar, .Lfloopstart_\endlabel, .Lfloopend_\endlabel
.endm
.macro floopgtz ar, endlabel
floopgtz_ \ar, .Lfloopstart_\endlabel, .Lfloopend_\endlabel
.endm
.macro floopend ar, endlabel
floopend_ \ar, .Lfloopstart_\endlabel, .Lfloopend_\endlabel
.endm
/* Numbered local label version of the macros: */
#if 0 /*UNTESTED*/
.macro floop89 ar
floop_ \ar, 8, 9f
.endm
.macro floopnez89 ar
floopnez_ \ar, 8, 9f
.endm
.macro floopgtz89 ar
floopgtz_ \ar, 8, 9f
.endm
.macro floopend89 ar
floopend_ \ar, 8b, 9
.endm
#endif /*0*/
/* Underlying version of the macros: */
.macro floop_ ar, startlabel, endlabelref
.ifdef _infloop_
.if _infloop_
.err // Error: floop cannot be nested
.endif
.endif
.set _infloop_, 1
#if XCHAL_HAVE_LOOPS
loop \ar, \endlabelref
#else /* XCHAL_HAVE_LOOPS */
\startlabel:
addi \ar, \ar, -1
#endif /* XCHAL_HAVE_LOOPS */
.endm // floop_
.macro floopnez_ ar, startlabel, endlabelref
.ifdef _infloop_
.if _infloop_
.err // Error: floopnez cannot be nested
.endif
.endif
.set _infloop_, 1
#if XCHAL_HAVE_LOOPS
loopnez \ar, \endlabelref
#else /* XCHAL_HAVE_LOOPS */
beqz \ar, \endlabelref
\startlabel:
addi \ar, \ar, -1
#endif /* XCHAL_HAVE_LOOPS */
.endm // floopnez_
.macro floopgtz_ ar, startlabel, endlabelref
.ifdef _infloop_
.if _infloop_
.err // Error: floopgtz cannot be nested
.endif
.endif
.set _infloop_, 1
#if XCHAL_HAVE_LOOPS
loopgtz \ar, \endlabelref
#else /* XCHAL_HAVE_LOOPS */
bltz \ar, \endlabelref
beqz \ar, \endlabelref
\startlabel:
addi \ar, \ar, -1
#endif /* XCHAL_HAVE_LOOPS */
.endm // floopgtz_
.macro floopend_ ar, startlabelref, endlabel
.ifndef _infloop_
.err // Error: floopend without matching floopXXX
.endif
.ifeq _infloop_
.err // Error: floopend without matching floopXXX
.endif
.set _infloop_, 0
#if ! XCHAL_HAVE_LOOPS
bnez \ar, \startlabelref
#endif /* XCHAL_HAVE_LOOPS */
\endlabel:
.endm // floopend_
/*----------------------------------------------------------------------
* crsil -- conditional RSIL (read/set interrupt level)
*
* Executes the RSIL instruction if it exists, else just reads PS.
* The RSIL instruction does not exist in the new exception architecture
* if the interrupt option is not selected.
*/
.macro crsil ar, newlevel
#if XCHAL_HAVE_OLD_EXC_ARCH || XCHAL_HAVE_INTERRUPTS
rsil \ar, \newlevel
#else
rsr \ar, PS
#endif
.endm // crsil
/*----------------------------------------------------------------------
* window_spill{4,8,12}
*
* These macros spill callers' register windows to the stack.
* They work for both privileged and non-privileged tasks.
* Must be called from a windowed ABI context, eg. within
* a windowed ABI function (ie. valid stack frame, window
* exceptions enabled, not in exception mode, etc).
*
* This macro requires a single invocation of the window_spill_common
* macro in the same assembly unit and section.
*
* Note that using window_spill{4,8,12} macros is more efficient
* than calling a function implemented using window_spill_function,
* because the latter needs extra code to figure out the size of
* the call to the spilling function.
*
* Example usage:
*
* .text
* .align 4
* .global some_function
* .type some_function,@function
* some_function:
* entry a1, 16
* :
* :
*
* window_spill4 // spill windows of some_function's callers; preserves a0..a3 only;
* // to use window_spill{8,12} in this example function we'd have
* // to increase space allocated by the entry instruction, because
* // 16 bytes only allows call4; 32 or 48 bytes (+locals) are needed
* // for call8/window_spill8 or call12/window_spill12 respectively.
* :
*
* retw
*
* window_spill_common // instantiates code used by window_spill4
*
*
* On entry:
* none (if window_spill4)
* stack frame has enough space allocated for call8 (if window_spill8)
* stack frame has enough space allocated for call12 (if window_spill12)
* On exit:
* a4..a15 clobbered (if window_spill4)
* a8..a15 clobbered (if window_spill8)
* a12..a15 clobbered (if window_spill12)
* no caller windows are in live registers
*/
.macro window_spill4
#if XCHAL_HAVE_WINDOWED
# if XCHAL_NUM_AREGS == 16
movi a15, 0 // for 16-register files, no need to call to reach the end
# elif XCHAL_NUM_AREGS == 32
call4 .L__wdwspill_assist28 // call deep enough to clear out any live callers
# elif XCHAL_NUM_AREGS == 64
call4 .L__wdwspill_assist60 // call deep enough to clear out any live callers
# endif
#endif
.endm // window_spill4
.macro window_spill8
#if XCHAL_HAVE_WINDOWED
# if XCHAL_NUM_AREGS == 16
movi a15, 0 // for 16-register files, no need to call to reach the end
# elif XCHAL_NUM_AREGS == 32
call8 .L__wdwspill_assist24 // call deep enough to clear out any live callers
# elif XCHAL_NUM_AREGS == 64
call8 .L__wdwspill_assist56 // call deep enough to clear out any live callers
# endif
#endif
.endm // window_spill8
.macro window_spill12
#if XCHAL_HAVE_WINDOWED
# if XCHAL_NUM_AREGS == 16
movi a15, 0 // for 16-register files, no need to call to reach the end
# elif XCHAL_NUM_AREGS == 32
call12 .L__wdwspill_assist20 // call deep enough to clear out any live callers
# elif XCHAL_NUM_AREGS == 64
call12 .L__wdwspill_assist52 // call deep enough to clear out any live callers
# endif
#endif
.endm // window_spill12
/*----------------------------------------------------------------------
* window_spill_function
*
* This macro outputs a function that will spill its caller's callers'
* register windows to the stack. Eg. it could be used to implement
* a version of xthal_window_spill() that works in non-privileged tasks.
* This works for both privileged and non-privileged tasks.
*
* Typical usage:
*
* .text
* .align 4
* .global my_spill_function
* .type my_spill_function,@function
* my_spill_function:
* window_spill_function
*
* On entry to resulting function:
* none
* On exit from resulting function:
* none (no caller windows are in live registers)
*/
.macro window_spill_function
#if XCHAL_HAVE_WINDOWED
# if XCHAL_NUM_AREGS == 32
entry sp, 48
bbci.l a0, 31, 1f // branch if called with call4
bbsi.l a0, 30, 2f // branch if called with call12
call8 .L__wdwspill_assist16 // called with call8, only need another 8
retw
1: call12 .L__wdwspill_assist16 // called with call4, only need another 12
retw
2: call4 .L__wdwspill_assist16 // called with call12, only need another 4
retw
# elif XCHAL_NUM_AREGS == 64
entry sp, 48
bbci.l a0, 31, 1f // branch if called with call4
bbsi.l a0, 30, 2f // branch if called with call12
call4 .L__wdwspill_assist52 // called with call8, only need a call4
retw
1: call8 .L__wdwspill_assist52 // called with call4, only need a call8
retw
2: call12 .L__wdwspill_assist40 // called with call12, can skip a call12
retw
# elif XCHAL_NUM_AREGS == 16
entry sp, 16
bbci.l a0, 31, 1f // branch if called with call4
bbsi.l a0, 30, 2f // branch if called with call12
movi a7, 0 // called with call8
retw
1: movi a11, 0 // called with call4
2: retw // if called with call12, everything already spilled
// movi a15, 0 // trick to spill all but the direct caller
// j 1f
// // The entry instruction is magical in the assembler (gets auto-aligned)
// // so we have to jump to it to avoid falling through the padding.
// // We need entry/retw to know where to return.
//1: entry sp, 16
// retw
# else
# error "unrecognized address register file size"
# endif
#endif /* XCHAL_HAVE_WINDOWED */
window_spill_common
.endm // window_spill_function
/*----------------------------------------------------------------------
* window_spill_common
*
* Common code used by any number of invocations of the window_spill##
* and window_spill_function macros.
*
* Must be instantiated exactly once within a given assembly unit,
* within call/j range of and same section as window_spill##
* macro invocations for that assembly unit.
* (Is automatically instantiated by the window_spill_function macro.)
*/
.macro window_spill_common
#if XCHAL_HAVE_WINDOWED && (XCHAL_NUM_AREGS == 32 || XCHAL_NUM_AREGS == 64)
.ifndef .L__wdwspill_defined
# if XCHAL_NUM_AREGS >= 64
.L__wdwspill_assist60:
entry sp, 32
call8 .L__wdwspill_assist52
retw
.L__wdwspill_assist56:
entry sp, 16
call4 .L__wdwspill_assist52
retw
.L__wdwspill_assist52:
entry sp, 48
call12 .L__wdwspill_assist40
retw
.L__wdwspill_assist40:
entry sp, 48
call12 .L__wdwspill_assist28
retw
# endif
.L__wdwspill_assist28:
entry sp, 48
call12 .L__wdwspill_assist16
retw
.L__wdwspill_assist24:
entry sp, 32
call8 .L__wdwspill_assist16
retw
.L__wdwspill_assist20:
entry sp, 16
call4 .L__wdwspill_assist16
retw
.L__wdwspill_assist16:
entry sp, 16
movi a15, 0
retw
.set .L__wdwspill_defined, 1
.endif
#endif /* XCHAL_HAVE_WINDOWED with 32 or 64 aregs */
.endm // window_spill_common
/*----------------------------------------------------------------------
* beqi32
*
* macro implements version of beqi for arbitrary 32-bit immidiate value
*
* beqi32 ax, ay, imm32, label
*
* Compares value in register ax with imm32 value and jumps to label if
* equal. Clobberes register ay if needed
*
*/
.macro beqi32 ax, ay, imm, label
.ifeq ((\imm-1) & ~7) // 1..8 ?
beqi \ax, \imm, \label
.else
.ifeq (\imm+1) // -1 ?
beqi \ax, \imm, \label
.else
.ifeq (\imm) // 0 ?
beqz \ax, \label
.else
// We could also handle immediates 10,12,16,32,64,128,256
// but it would be a long macro...
movi \ay, \imm
beq \ax, \ay, \label
.endif
.endif
.endif
.endm // beqi32
#endif /*XTENSA_COREASM_H*/

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include/asm-xtensa/xtensa/corebits.h
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@ -1,77 +0,0 @@
#ifndef XTENSA_COREBITS_H
#define XTENSA_COREBITS_H
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* xtensa/corebits.h - Xtensa Special Register field positions and masks.
*
* (In previous releases, these were defined in specreg.h, a generated file.
* This file is not generated, i.e. it is processor configuration independent.)
*/
/* EXCCAUSE register fields: */
#define EXCCAUSE_EXCCAUSE_SHIFT 0
#define EXCCAUSE_EXCCAUSE_MASK 0x3F
/* Exception causes (mostly incomplete!): */
#define EXCCAUSE_ILLEGAL 0
#define EXCCAUSE_SYSCALL 1
#define EXCCAUSE_IFETCHERROR 2
#define EXCCAUSE_LOADSTOREERROR 3
#define EXCCAUSE_LEVEL1INTERRUPT 4
#define EXCCAUSE_ALLOCA 5
/* PS register fields: */
#define PS_WOE_SHIFT 18
#define PS_WOE_MASK 0x00040000
#define PS_WOE PS_WOE_MASK
#define PS_CALLINC_SHIFT 16
#define PS_CALLINC_MASK 0x00030000
#define PS_CALLINC(n) (((n)&3)<<PS_CALLINC_SHIFT) /* n = 0..3 */
#define PS_OWB_SHIFT 8
#define PS_OWB_MASK 0x00000F00
#define PS_OWB(n) (((n)&15)<<PS_OWB_SHIFT) /* n = 0..15 (or 0..7) */
#define PS_RING_SHIFT 6
#define PS_RING_MASK 0x000000C0
#define PS_RING(n) (((n)&3)<<PS_RING_SHIFT) /* n = 0..3 */
#define PS_UM_SHIFT 5
#define PS_UM_MASK 0x00000020
#define PS_UM PS_UM_MASK
#define PS_EXCM_SHIFT 4
#define PS_EXCM_MASK 0x00000010
#define PS_EXCM PS_EXCM_MASK
#define PS_INTLEVEL_SHIFT 0
#define PS_INTLEVEL_MASK 0x0000000F
#define PS_INTLEVEL(n) ((n)&PS_INTLEVEL_MASK) /* n = 0..15 */
/* Backward compatibility (deprecated): */
#define PS_PROGSTACK_SHIFT PS_UM_SHIFT
#define PS_PROGSTACK_MASK PS_UM_MASK
#define PS_PROG_SHIFT PS_UM_SHIFT
#define PS_PROG_MASK PS_UM_MASK
#define PS_PROG PS_UM
/* DBREAKCn register fields: */
#define DBREAKC_MASK_SHIFT 0
#define DBREAKC_MASK_MASK 0x0000003F
#define DBREAKC_LOADBREAK_SHIFT 30
#define DBREAKC_LOADBREAK_MASK 0x40000000
#define DBREAKC_STOREBREAK_SHIFT 31
#define DBREAKC_STOREBREAK_MASK 0x80000000
/* DEBUGCAUSE register fields: */
#define DEBUGCAUSE_DEBUGINT_SHIFT 5
#define DEBUGCAUSE_DEBUGINT_MASK 0x20 /* debug interrupt */
#define DEBUGCAUSE_BREAKN_SHIFT 4
#define DEBUGCAUSE_BREAKN_MASK 0x10 /* BREAK.N instruction */
#define DEBUGCAUSE_BREAK_SHIFT 3
#define DEBUGCAUSE_BREAK_MASK 0x08 /* BREAK instruction */
#define DEBUGCAUSE_DBREAK_SHIFT 2
#define DEBUGCAUSE_DBREAK_MASK 0x04 /* DBREAK match */
#define DEBUGCAUSE_IBREAK_SHIFT 1
#define DEBUGCAUSE_IBREAK_MASK 0x02 /* IBREAK match */
#define DEBUGCAUSE_ICOUNT_SHIFT 0
#define DEBUGCAUSE_ICOUNT_MASK 0x01 /* ICOUNT would increment to zero */
#endif /*XTENSA_COREBITS_H*/

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include/asm-xtensa/xtensa/hal.h
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#ifndef XTENSA_HAL_H
#define XTENSA_HAL_H
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/hal.h -- contains a definition of the
* Core HAL interface.
*
* All definitions in this header file are independent of any specific
* Xtensa processor configuration. Thus an OS or other software can
* include this header file and be compiled into configuration-
* independent objects that can be distributed and eventually linked
* to the HAL library (libhal.a) to create a configuration-specific
* final executable.
*
* Certain definitions, however, are release-specific -- such as the
* XTHAL_RELEASE_xxx macros (or additions made in later releases).
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
/*----------------------------------------------------------------------
Constant Definitions
(shared with assembly)
----------------------------------------------------------------------*/
/* Software release information (not configuration-specific!): */
#define XTHAL_RELEASE_MAJOR 1050
#define XTHAL_RELEASE_MINOR 0
#define XTHAL_RELEASE_NAME "T1050.0-2002-08-06-eng0"
#define XTHAL_RELEASE_INTERNAL "2002-08-06-eng0"
#define XTHAL_REL_T1050 1
#define XTHAL_REL_T1050_0 1
#define XTHAL_REL_T1050_0_2002 1
#define XTHAL_REL_T1050_0_2002_08 1
#define XTHAL_REL_T1050_0_2002_08_06 1
#define XTHAL_REL_T1050_0_2002_08_06_ENG0 1
/* HAL version numbers (these names are for backward compatibility): */
#define XTHAL_MAJOR_REV XTHAL_RELEASE_MAJOR
#define XTHAL_MINOR_REV XTHAL_RELEASE_MINOR
/*
* A bit of software release history on values of XTHAL_{MAJOR,MINOR}_REV:
*
* Release MAJOR MINOR Comment
* ======= ===== ===== =======
* T1015.n n/a n/a (HAL not yet available)
* T1020.{0,1,2} 0 1 (HAL beta)
* T1020.{3,4} 0 2 First release.
* T1020.n (n>4) 0 2 or >3 (TBD)
* T1030.0 0 1 (HAL beta)
* T1030.{1,2} 0 3 Equivalent to first release.
* T1030.n (n>=3) 0 >= 3 (TBD)
* T1040.n 1040 n Full CHAL available from T1040.2
* T1050.n 1050 n Current release.
*
*
* Note: there is a distinction between the software release with
* which something is compiled (accessible using XTHAL_RELEASE_* macros)
* and the software release with which the HAL library was compiled
* (accessible using Xthal_release_* global variables). This
* distinction is particularly relevant for vendors that distribute
* configuration-independent binaries (eg. an OS), where their customer
* might link it with a HAL of a different Xtensa software release.
* In this case, it may be appropriate for the OS to verify at run-time
* whether XTHAL_RELEASE_* and Xthal_release_* are compatible.
* [Guidelines as to which release is compatible with which are not
* currently provided explicitly, but might be inferred from reading
* OSKit documentation for all releases -- compatibility is also highly
* dependent on which HAL features are used. Each release is usually
* backward compatible, with very few exceptions if any.]
*
* Notes:
* Tornado 2.0 supported in T1020.3+, T1030.1+, and T1040.{0,1} only.
* Tornado 2.0.2 supported in T1040.2+, and T1050.
* Compile-time HAL port of NucleusPlus supported by T1040.2+ and T1050.
*/
/*
* Architectural limits, independent of configuration.
* Note that these are ISA-defined limits, not micro-architecture implementation
* limits enforced by the Xtensa Processor Generator (which may be stricter than
* these below).
*/
#define XTHAL_MAX_CPS 8 /* max number of coprocessors (0..7) */
#define XTHAL_MAX_INTERRUPTS 32 /* max number of interrupts (0..31) */
#define XTHAL_MAX_INTLEVELS 16 /* max number of interrupt levels (0..15) */
/* (as of T1040, implementation limit is 7: 0..6) */
#define XTHAL_MAX_TIMERS 4 /* max number of timers (CCOMPARE0..CCOMPARE3) */
/* (as of T1040, implementation limit is 3: 0..2) */
/* Misc: */
#define XTHAL_LITTLEENDIAN 0
#define XTHAL_BIGENDIAN 1
/* Interrupt types: */
#define XTHAL_INTTYPE_UNCONFIGURED 0
#define XTHAL_INTTYPE_SOFTWARE 1
#define XTHAL_INTTYPE_EXTERN_EDGE 2
#define XTHAL_INTTYPE_EXTERN_LEVEL 3
#define XTHAL_INTTYPE_TIMER 4
#define XTHAL_INTTYPE_NMI 5
#define XTHAL_MAX_INTTYPES 6 /* number of interrupt types */
/* Timer related: */
#define XTHAL_TIMER_UNCONFIGURED -1 /* Xthal_timer_interrupt[] value for non-existent timers */
#define XTHAL_TIMER_UNASSIGNED XTHAL_TIMER_UNCONFIGURED /* (for backwards compatibility only) */
/* Access Mode bits (tentative): */ /* bit abbr unit short_name PPC equ - Description */
#define XTHAL_AMB_EXCEPTION 0 /* 001 E EX fls: EXception none - generate exception on any access (aka "illegal") */
#define XTHAL_AMB_HITCACHE 1 /* 002 C CH fls: use Cache on Hit ~(I CI) - use cache on hit -- way from tag match [or H HC, or U UC] (ISA: same, except for Isolate case) */
#define XTHAL_AMB_ALLOCATE 2 /* 004 A AL fl?: ALlocate none - refill cache on miss -- way from LRU [or F FI fill] (ISA: Read/Write Miss Refill) */
#define XTHAL_AMB_WRITETHRU 3 /* 008 W WT --s: WriteThrough W WT - store immediately to memory (ISA: same) */
#define XTHAL_AMB_ISOLATE 4 /* 010 I IS fls: ISolate none - use cache regardless of hit-vs-miss -- way from vaddr (ISA: use-cache-on-miss+hit) */
#define XTHAL_AMB_GUARD 5 /* 020 G GU ?l?: GUard G * - non-speculative; spec/replay refs not permitted */
#if 0
#define XTHAL_AMB_ORDERED x /* 000 O OR fls: ORdered G * - mem accesses cannot be out of order */
#define XTHAL_AMB_FUSEWRITES x /* 000 F FW --s: FuseWrites none - allow combining/merging multiple writes (to same datapath data unit) into one (implied by writeback) */
#define XTHAL_AMB_COHERENT x /* 000 M MC fl?: Mem/MP Coherent M - on reads, other CPUs/bus-masters may need to supply data */
#define XTHAL_AMB_TRUSTED x /* 000 T TR ?l?: TRusted none - memory will not bus error (if it does, handle as fatal imprecise interrupt) */
#define XTHAL_AMB_PREFETCH x /* 000 P PR fl?: PRefetch none - on refill, read line+1 into prefetch buffers */
#define XTHAL_AMB_STREAM x /* 000 S ST ???: STreaming none - access one of N stream buffers */
#endif /*0*/
#define XTHAL_AM_EXCEPTION (1<<XTHAL_AMB_EXCEPTION)
#define XTHAL_AM_HITCACHE (1<<XTHAL_AMB_HITCACHE)
#define XTHAL_AM_ALLOCATE (1<<XTHAL_AMB_ALLOCATE)
#define XTHAL_AM_WRITETHRU (1<<XTHAL_AMB_WRITETHRU)
#define XTHAL_AM_ISOLATE (1<<XTHAL_AMB_ISOLATE)
#define XTHAL_AM_GUARD (1<<XTHAL_AMB_GUARD)
#if 0
#define XTHAL_AM_ORDERED (1<<XTHAL_AMB_ORDERED)
#define XTHAL_AM_FUSEWRITES (1<<XTHAL_AMB_FUSEWRITES)
#define XTHAL_AM_COHERENT (1<<XTHAL_AMB_COHERENT)
#define XTHAL_AM_TRUSTED (1<<XTHAL_AMB_TRUSTED)
#define XTHAL_AM_PREFETCH (1<<XTHAL_AMB_PREFETCH)
#define XTHAL_AM_STREAM (1<<XTHAL_AMB_STREAM)
#endif /*0*/
/*
* Allowed Access Modes (bit combinations).
*
* Columns are:
* "FOGIWACE"
* Access mode bits (see XTHAL_AMB_xxx above).
* <letter> = bit is set
* '-' = bit is clear
* '.' = bit is irrelevant / don't care, as follows:
* E=1 makes all others irrelevant
* W,F relevant only for stores
* "2345"
* Indicates which Xtensa releases support the corresponding
* access mode. Releases for each character column are:
* 2 = prior to T1020.2: T1015 (V1.5), T1020.0, T1020.1
* 3 = T1020.2 and later: T1020.2+, T1030
* 4 = T1040
* 5 = T1050 (maybe)
* And the character column contents are:
* <number> = support by release(s)
* "." = unsupported by release(s)
* "?" = support unknown
*/
/* FOGIWACE 2345 */
/* For instruction fetch: */
#define XTHAL_FAM_EXCEPTION 0x001 /* .......E 2345 exception */
#define XTHAL_FAM_ISOLATE 0x012 /* .--I.-C- .... isolate */
#define XTHAL_FAM_BYPASS 0x000 /* .---.--- 2345 bypass */
#define XTHAL_FAM_NACACHED 0x002 /* .---.-C- .... cached no-allocate (frozen) */
#define XTHAL_FAM_CACHED 0x006 /* .---.AC- 2345 cached */
/* For data load: */
#define XTHAL_LAM_EXCEPTION 0x001 /* .......E 2345 exception */
#define XTHAL_LAM_ISOLATE 0x012 /* .--I.-C- 2345 isolate */
#define XTHAL_LAM_BYPASS 0x000 /* .O--.--- 2... bypass speculative */
#define XTHAL_LAM_BYPASSG 0x020 /* .OG-.--- .345 bypass guarded */
#define XTHAL_LAM_NACACHED 0x002 /* .O--.-C- 2... cached no-allocate speculative */
#define XTHAL_LAM_NACACHEDG 0x022 /* .OG-.-C- .345 cached no-allocate guarded */
#define XTHAL_LAM_CACHED 0x006 /* .---.AC- 2345 cached speculative */
#define XTHAL_LAM_CACHEDG 0x026 /* .?G-.AC- .... cached guarded */
/* For data store: */
#define XTHAL_SAM_EXCEPTION 0x001 /* .......E 2345 exception */
#define XTHAL_SAM_ISOLATE 0x032 /* .-GI--C- 2345 isolate */
#define XTHAL_SAM_BYPASS 0x028 /* -OG-W--- 2345 bypass */
/*efine XTHAL_SAM_BYPASSF 0x028*/ /* F-G-W--- ...? bypass write-combined */
#define XTHAL_SAM_WRITETHRU 0x02A /* -OG-W-C- 234? writethrough */
/*efine XTHAL_SAM_WRITETHRUF 0x02A*/ /* F-G-W-C- ...5 writethrough write-combined */
#define XTHAL_SAM_WRITEALLOC 0x02E /* -OG-WAC- ...? writethrough-allocate */
/*efine XTHAL_SAM_WRITEALLOCF 0x02E*/ /* F-G-WAC- ...? writethrough-allocate write-combined */
#define XTHAL_SAM_WRITEBACK 0x026 /* F-G--AC- ...5 writeback */
#if 0
/*
Cache attribute encoding for CACHEATTR (per ISA):
(Note: if this differs from ISA Ref Manual, ISA has precedence)
Inst-fetches Loads Stores
------------- ------------ -------------
0x0 FCA_EXCEPTION ?LCA_NACACHED_G* SCA_WRITETHRU "uncached"
0x1 FCA_CACHED LCA_CACHED SCA_WRITETHRU cached
0x2 FCA_BYPASS LCA_BYPASS_G* SCA_BYPASS bypass
0x3 FCA_CACHED LCA_CACHED SCA_WRITEALLOCF write-allocate
or LCA_EXCEPTION SCA_EXCEPTION (if unimplemented)
0x4 FCA_CACHED LCA_CACHED SCA_WRITEBACK write-back
or LCA_EXCEPTION SCA_EXCEPTION (if unimplemented)
0x5..D FCA_EXCEPTION LCA_EXCEPTION SCA_EXCEPTION (reserved)
0xE FCA_EXCEPTION LCA_ISOLATE SCA_ISOLATE isolate
0xF FCA_EXCEPTION LCA_EXCEPTION SCA_EXCEPTION illegal
* Prior to T1020.2?, guard feature not supported, this defaulted to speculative (no _G)
*/
#endif /*0*/
#if !defined(__ASSEMBLY__) && !defined(_NOCLANGUAGE)
#ifdef __cplusplus
extern "C" {
#endif
/*----------------------------------------------------------------------
HAL
----------------------------------------------------------------------*/
/* Constant to be checked in build = (XTHAL_MAJOR_REV<<16)|XTHAL_MINOR_REV */
extern const unsigned int Xthal_rev_no;
/*----------------------------------------------------------------------
Processor State
----------------------------------------------------------------------*/
/* save & restore the extra processor state */
extern void xthal_save_extra(void *base);
extern void xthal_restore_extra(void *base);
extern void xthal_save_cpregs(void *base, int);
extern void xthal_restore_cpregs(void *base, int);
/*extern void xthal_save_all_extra(void *base);*/
/*extern void xthal_restore_all_extra(void *base);*/
/* space for processor state */
extern const unsigned int Xthal_extra_size;
extern const unsigned int Xthal_extra_align;
/* space for TIE register files */
extern const unsigned int Xthal_cpregs_size[XTHAL_MAX_CPS];
extern const unsigned int Xthal_cpregs_align[XTHAL_MAX_CPS];
/* total of space for the processor state (for Tor2) */
extern const unsigned int Xthal_all_extra_size;
extern const unsigned int Xthal_all_extra_align;
/* initialize the extra processor */
/*extern void xthal_init_extra(void);*/
/* initialize the TIE coprocessor */
/*extern void xthal_init_cp(int);*/
/* initialize the extra processor */
extern void xthal_init_mem_extra(void *);
/* initialize the TIE coprocessor */
extern void xthal_init_mem_cp(void *, int);
/* validate & invalidate the TIE register file */
extern void xthal_validate_cp(int);
extern void xthal_invalidate_cp(int);
/* the number of TIE coprocessors contiguous from zero (for Tor2) */
extern const unsigned int Xthal_num_coprocessors;
/* actual number of coprocessors */
extern const unsigned char Xthal_cp_num;
/* index of highest numbered coprocessor, plus one */
extern const unsigned char Xthal_cp_max;
/* index of highest allowed coprocessor number, per cfg, plus one */
/*extern const unsigned char Xthal_cp_maxcfg;*/
/* bitmask of which coprocessors are present */
extern const unsigned int Xthal_cp_mask;
/* read and write cpenable register */
extern void xthal_set_cpenable(unsigned);
extern unsigned xthal_get_cpenable(void);
/* read & write extra state register */
/*extern int xthal_read_extra(void *base, unsigned reg, unsigned *value);*/
/*extern int xthal_write_extra(void *base, unsigned reg, unsigned value);*/
/* read & write a TIE coprocessor register */
/*extern int xthal_read_cpreg(void *base, int cp, unsigned reg, unsigned *value);*/
/*extern int xthal_write_cpreg(void *base, int cp, unsigned reg, unsigned value);*/
/* return coprocessor number based on register */
/*extern int xthal_which_cp(unsigned reg);*/
/*----------------------------------------------------------------------
Interrupts
----------------------------------------------------------------------*/
/* the number of interrupt levels */
extern const unsigned char Xthal_num_intlevels;
/* the number of interrupts */
extern const unsigned char Xthal_num_interrupts;
/* mask for level of interrupts */
extern const unsigned int Xthal_intlevel_mask[XTHAL_MAX_INTLEVELS];
/* mask for level 0 to N interrupts */
extern const unsigned int Xthal_intlevel_andbelow_mask[XTHAL_MAX_INTLEVELS];
/* level of each interrupt */
extern const unsigned char Xthal_intlevel[XTHAL_MAX_INTERRUPTS];
/* type per interrupt */
extern const unsigned char Xthal_inttype[XTHAL_MAX_INTERRUPTS];
/* masks of each type of interrupt */
extern const unsigned int Xthal_inttype_mask[XTHAL_MAX_INTTYPES];
/* interrupt numbers assigned to each timer interrupt */
extern const int Xthal_timer_interrupt[XTHAL_MAX_TIMERS];
/*** Virtual interrupt prioritization: ***/
/* Convert between interrupt levels (as per PS.INTLEVEL) and virtual interrupt priorities: */
extern unsigned xthal_vpri_to_intlevel(unsigned vpri);
extern unsigned xthal_intlevel_to_vpri(unsigned intlevel);
/* Enables/disables given set (mask) of interrupts; returns previous enabled-mask of all ints: */
extern unsigned xthal_int_enable(unsigned);
extern unsigned xthal_int_disable(unsigned);
/* Set/get virtual priority of an interrupt: */
extern int xthal_set_int_vpri(int intnum, int vpri);
extern int xthal_get_int_vpri(int intnum);
/* Set/get interrupt lockout level for exclusive access to virtual priority data structures: */
extern void xthal_set_vpri_locklevel(unsigned intlevel);
extern unsigned xthal_get_vpri_locklevel(void);
/* Set/get current virtual interrupt priority: */
extern unsigned xthal_set_vpri(unsigned vpri);
extern unsigned xthal_get_vpri(unsigned vpri);
extern unsigned xthal_set_vpri_intlevel(unsigned intlevel);
extern unsigned xthal_set_vpri_lock(void);
/*----------------------------------------------------------------------
Generic Interrupt Trampolining Support
----------------------------------------------------------------------*/
typedef void (XtHalVoidFunc)(void);
/*
* Bitmask of interrupts currently trampolining down:
*/
extern unsigned Xthal_tram_pending;
/*
* Bitmask of which interrupts currently trampolining down
* synchronously are actually enabled; this bitmask is necessary
* because INTENABLE cannot hold that state (sync-trampolining
* interrupts must be kept disabled while trampolining);
* in the current implementation, any bit set here is not set
* in INTENABLE, and vice-versa; once a sync-trampoline is
* handled (at level one), its enable bit must be moved from
* here to INTENABLE:
*/
extern unsigned Xthal_tram_enabled;
/*
* Bitmask of interrupts configured for sync trampolining:
*/
extern unsigned Xthal_tram_sync;
/* Trampoline support functions: */
extern unsigned xthal_tram_pending_to_service( void );
extern void xthal_tram_done( unsigned serviced_mask );
extern int xthal_tram_set_sync( int intnum, int sync );
extern XtHalVoidFunc* xthal_set_tram_trigger_func( XtHalVoidFunc *trigger_fn );
/* INTENABLE,INTREAD,INTSET,INTCLEAR register access functions: */
extern unsigned xthal_get_intenable( void );
extern void xthal_set_intenable( unsigned );
extern unsigned xthal_get_intread( void );
extern void xthal_set_intset( unsigned );
extern void xthal_set_intclear( unsigned );
/*----------------------------------------------------------------------
Register Windows
----------------------------------------------------------------------*/
/* number of registers in register window */
extern const unsigned int Xthal_num_aregs;
extern const unsigned char Xthal_num_aregs_log2;
/* This spill any live register windows (other than the caller's): */
extern void xthal_window_spill( void );
/*----------------------------------------------------------------------
Cache
----------------------------------------------------------------------*/
/* size of the cache lines in log2(bytes) */
extern const unsigned char Xthal_icache_linewidth;
extern const unsigned char Xthal_dcache_linewidth;
/* size of the cache lines in bytes */
extern const unsigned short Xthal_icache_linesize;
extern const unsigned short Xthal_dcache_linesize;
/* number of cache sets in log2(lines per way) */
extern const unsigned char Xthal_icache_setwidth;
extern const unsigned char Xthal_dcache_setwidth;
/* cache set associativity (number of ways) */
extern const unsigned int Xthal_icache_ways;
extern const unsigned int Xthal_dcache_ways;
/* size of the caches in bytes (ways * 2^(linewidth + setwidth)) */
extern const unsigned int Xthal_icache_size;
extern const unsigned int Xthal_dcache_size;
/* cache features */
extern const unsigned char Xthal_dcache_is_writeback;
extern const unsigned char Xthal_icache_line_lockable;
extern const unsigned char Xthal_dcache_line_lockable;
/* cache attribute register control (used by other HAL routines) */
extern unsigned xthal_get_cacheattr( void );
extern unsigned xthal_get_icacheattr( void );
extern unsigned xthal_get_dcacheattr( void );
extern void xthal_set_cacheattr( unsigned );
extern void xthal_set_icacheattr( unsigned );
extern void xthal_set_dcacheattr( unsigned );
/* initialize cache support (must be called once at startup, before all other cache calls) */
/*extern void xthal_cache_startinit( void );*/
/* reset caches */
/*extern void xthal_icache_reset( void );*/
/*extern void xthal_dcache_reset( void );*/
/* enable caches */
extern void xthal_icache_enable( void ); /* DEPRECATED */
extern void xthal_dcache_enable( void ); /* DEPRECATED */
/* disable caches */
extern void xthal_icache_disable( void ); /* DEPRECATED */
extern void xthal_dcache_disable( void ); /* DEPRECATED */
/* invalidate the caches */
extern void xthal_icache_all_invalidate( void );
extern void xthal_dcache_all_invalidate( void );
extern void xthal_icache_region_invalidate( void *addr, unsigned size );
extern void xthal_dcache_region_invalidate( void *addr, unsigned size );
extern void xthal_icache_line_invalidate(void *addr);
extern void xthal_dcache_line_invalidate(void *addr);
/* write dirty data back */
extern void xthal_dcache_all_writeback( void );
extern void xthal_dcache_region_writeback( void *addr, unsigned size );
extern void xthal_dcache_line_writeback(void *addr);
/* write dirty data back and invalidate */
extern void xthal_dcache_all_writeback_inv( void );
extern void xthal_dcache_region_writeback_inv( void *addr, unsigned size );
extern void xthal_dcache_line_writeback_inv(void *addr);
/* prefetch and lock specified memory range into cache */
extern void xthal_icache_region_lock( void *addr, unsigned size );
extern void xthal_dcache_region_lock( void *addr, unsigned size );
extern void xthal_icache_line_lock(void *addr);
extern void xthal_dcache_line_lock(void *addr);
/* unlock from cache */
extern void xthal_icache_all_unlock( void );
extern void xthal_dcache_all_unlock( void );
extern void xthal_icache_region_unlock( void *addr, unsigned size );
extern void xthal_dcache_region_unlock( void *addr, unsigned size );
extern void xthal_icache_line_unlock(void *addr);
extern void xthal_dcache_line_unlock(void *addr);
/* sync icache and memory */
extern void xthal_icache_sync( void );
/* sync dcache and memory */
extern void xthal_dcache_sync( void );
/*----------------------------------------------------------------------
Debug
----------------------------------------------------------------------*/
/* 1 if debug option configured, 0 if not: */
extern const int Xthal_debug_configured;
/* Number of instruction and data break registers: */
extern const int Xthal_num_ibreak;
extern const int Xthal_num_dbreak;
/* Set (plant) and remove software breakpoint, both synchronizing cache: */
extern unsigned int xthal_set_soft_break(void *addr);
extern void xthal_remove_soft_break(void *addr, unsigned int);
/*----------------------------------------------------------------------
Disassembler
----------------------------------------------------------------------*/
/* Max expected size of the return buffer for a disassembled instruction (hint only): */
#define XTHAL_DISASM_BUFSIZE 80
/* Disassembly option bits for selecting what to return: */
#define XTHAL_DISASM_OPT_ADDR 0x0001 /* display address */
#define XTHAL_DISASM_OPT_OPHEX 0x0002 /* display opcode bytes in hex */
#define XTHAL_DISASM_OPT_OPCODE 0x0004 /* display opcode name (mnemonic) */
#define XTHAL_DISASM_OPT_PARMS 0x0008 /* display parameters */
#define XTHAL_DISASM_OPT_ALL 0x0FFF /* display everything */
/* routine to get a string for the disassembled instruction */
extern int xthal_disassemble( unsigned char *instr_buf, void *tgt_addr,
char *buffer, unsigned buflen, unsigned options );
/* routine to get the size of the next instruction. Returns 0 for
illegal instruction */
extern int xthal_disassemble_size( unsigned char *instr_buf );
/*----------------------------------------------------------------------
Core Counter
----------------------------------------------------------------------*/
/* counter info */
extern const unsigned char Xthal_have_ccount; /* set if CCOUNT register present */
extern const unsigned char Xthal_num_ccompare; /* number of CCOMPAREn registers */
/* get CCOUNT register (if not present return 0) */
extern unsigned xthal_get_ccount(void);
/* set and get CCOMPAREn registers (if not present, get returns 0) */
extern void xthal_set_ccompare(int, unsigned);
extern unsigned xthal_get_ccompare(int);
/*----------------------------------------------------------------------
Instruction/Data RAM/ROM Access
----------------------------------------------------------------------*/
extern void* xthal_memcpy(void *dst, const void *src, unsigned len);
extern void* xthal_bcopy(const void *src, void *dst, unsigned len);
/*----------------------------------------------------------------------
MP Synchronization
----------------------------------------------------------------------*/
extern int xthal_compare_and_set( int *addr, int test_val, int compare_val );
extern unsigned xthal_get_prid( void );
/*extern const char Xthal_have_s32c1i;*/
extern const unsigned char Xthal_have_prid;
/*----------------------------------------------------------------------
Miscellaneous
----------------------------------------------------------------------*/
extern const unsigned int Xthal_release_major;
extern const unsigned int Xthal_release_minor;
extern const char * const Xthal_release_name;
extern const char * const Xthal_release_internal;
extern const unsigned char Xthal_memory_order;
extern const unsigned char Xthal_have_windowed;
extern const unsigned char Xthal_have_density;
extern const unsigned char Xthal_have_booleans;
extern const unsigned char Xthal_have_loops;
extern const unsigned char Xthal_have_nsa;
extern const unsigned char Xthal_have_minmax;
extern const unsigned char Xthal_have_sext;
extern const unsigned char Xthal_have_clamps;
extern const unsigned char Xthal_have_mac16;
extern const unsigned char Xthal_have_mul16;
extern const unsigned char Xthal_have_fp;
extern const unsigned char Xthal_have_speculation;
extern const unsigned char Xthal_have_exceptions;
extern const unsigned char Xthal_xea_version;
extern const unsigned char Xthal_have_interrupts;
extern const unsigned char Xthal_have_highlevel_interrupts;
extern const unsigned char Xthal_have_nmi;
extern const unsigned short Xthal_num_writebuffer_entries;
extern const unsigned int Xthal_build_unique_id;
/* Release info for hardware targeted by software upgrades: */
extern const unsigned int Xthal_hw_configid0;
extern const unsigned int Xthal_hw_configid1;
extern const unsigned int Xthal_hw_release_major;
extern const unsigned int Xthal_hw_release_minor;
extern const char * const Xthal_hw_release_name;
extern const char * const Xthal_hw_release_internal;
/* Internal memories... */
extern const unsigned char Xthal_num_instrom;
extern const unsigned char Xthal_num_instram;
extern const unsigned char Xthal_num_datarom;
extern const unsigned char Xthal_num_dataram;
extern const unsigned char Xthal_num_xlmi;
extern const unsigned int Xthal_instrom_vaddr[1];
extern const unsigned int Xthal_instrom_paddr[1];
extern const unsigned int Xthal_instrom_size [1];
extern const unsigned int Xthal_instram_vaddr[1];
extern const unsigned int Xthal_instram_paddr[1];
extern const unsigned int Xthal_instram_size [1];
extern const unsigned int Xthal_datarom_vaddr[1];
extern const unsigned int Xthal_datarom_paddr[1];
extern const unsigned int Xthal_datarom_size [1];
extern const unsigned int Xthal_dataram_vaddr[1];
extern const unsigned int Xthal_dataram_paddr[1];
extern const unsigned int Xthal_dataram_size [1];
extern const unsigned int Xthal_xlmi_vaddr[1];
extern const unsigned int Xthal_xlmi_paddr[1];
extern const unsigned int Xthal_xlmi_size [1];
/*----------------------------------------------------------------------
Memory Management Unit
----------------------------------------------------------------------*/
extern const unsigned char Xthal_have_spanning_way;
extern const unsigned char Xthal_have_identity_map;
extern const unsigned char Xthal_have_mimic_cacheattr;
extern const unsigned char Xthal_have_xlt_cacheattr;
extern const unsigned char Xthal_have_cacheattr;
extern const unsigned char Xthal_have_tlbs;
extern const unsigned char Xthal_mmu_asid_bits; /* 0 .. 8 */
extern const unsigned char Xthal_mmu_asid_kernel;
extern const unsigned char Xthal_mmu_rings; /* 1 .. 4 (perhaps 0 if no MMU and/or no protection?) */
extern const unsigned char Xthal_mmu_ring_bits;
extern const unsigned char Xthal_mmu_sr_bits;
extern const unsigned char Xthal_mmu_ca_bits;
extern const unsigned int Xthal_mmu_max_pte_page_size;
extern const unsigned int Xthal_mmu_min_pte_page_size;
extern const unsigned char Xthal_itlb_way_bits;
extern const unsigned char Xthal_itlb_ways;
extern const unsigned char Xthal_itlb_arf_ways;
extern const unsigned char Xthal_dtlb_way_bits;
extern const unsigned char Xthal_dtlb_ways;
extern const unsigned char Xthal_dtlb_arf_ways;
/* Convert between virtual and physical addresses (through static maps only): */
/*** WARNING: these two functions may go away in a future release; don't depend on them! ***/
extern int xthal_static_v2p( unsigned vaddr, unsigned *paddrp );
extern int xthal_static_p2v( unsigned paddr, unsigned *vaddrp, unsigned cached );
#if 0
/******************* EXPERIMENTAL AND TENTATIVE ONLY ********************/
#define XTHAL_MMU_PAGESZ_COUNT_MAX 8 /* maximum number of different page sizes */
extern const char Xthal_mmu_pagesz_count; /* 0 .. 8 number of different page sizes configured */
/* Note: the following table doesn't necessarily have page sizes in increasing order: */
extern const char Xthal_mmu_pagesz_log2[XTHAL_MMU_PAGESZ_COUNT_MAX]; /* 10 .. 28 (0 past count) */
/* Sorted (increasing) table of page sizes, that indexes into the above table: */
extern const char Xthal_mmu_pagesz_sorted[XTHAL_MMU_PAGESZ_COUNT_MAX]; /* 0 .. 7 (0 past count) */
/*u32 Xthal_virtual_exceptions;*/ /* bitmask of which exceptions execute in virtual mode... */
extern const char Xthal_mmu_pte_pagesz_log2_min; /* ?? minimum page size in PTEs */
extern const char Xthal_mmu_pte_pagesz_log2_max; /* ?? maximum page size in PTEs */
/* Cache Attribute Bits Implemented by the Cache (part of the cache abstraction) */
extern const char Xthal_icache_fca_bits_implemented; /* ITLB/UTLB only! */
extern const char Xthal_dcache_lca_bits_implemented; /* DTLB/UTLB only! */
extern const char Xthal_dcache_sca_bits_implemented; /* DTLB/UTLB only! */
/* Per TLB Parameters (Instruction, Data, Unified) */
struct XtHalMmuTlb Xthal_itlb; /* description of MMU I-TLB generic features */
struct XtHalMmuTlb Xthal_dtlb; /* description of MMU D-TLB generic features */
struct XtHalMmuTlb Xthal_utlb; /* description of MMU U-TLB generic features */
#define XTHAL_MMU_WAYS_MAX 8 /* maximum number of ways (associativities) for each TLB */
/* Structure for common information described for each possible TLB (instruction, data and unified): */
typedef struct XtHalMmuTlb {
u8 va_bits; /* 32 (number of virtual address bits) */
u8 pa_bits; /* 32 (number of physical address bits) */
bool tlb_va_indexed; /* 1 (set if TLB is indexed by virtual address) */
bool tlb_va_tagged; /* 0 (set if TLB is tagged by virtual address) */
bool cache_va_indexed; /* 1 (set if cache is indexed by virtual address) */
bool cache_va_tagged; /* 0 (set if cache is tagged by virtual address) */
/*bool (whether page tables are traversed in vaddr sorted order, paddr sorted order, ...) */
/*u8 (set of available page attribute bits, other than cache attribute bits defined above) */
/*u32 (various masks for pages, MMU table/TLB entries, etc.) */
u8 way_count; /* 0 .. 8 (number of ways, a.k.a. associativities, for this TLB) */
XtHalMmuTlbWay * ways[XTHAL_MMU_WAYS_MAX]; /* pointers to per-way parms for each way */
} XtHalMmuTlb;
/* Per TLB Way (Per Associativity) Parameters */
typedef struct XtHalMmuTlbWay {
u32 index_count_log2; /* 0 .. 4 */
u32 pagesz_mask; /* 0 .. 2^pagesz_count - 1 (each bit corresponds to a size */
/* defined in the Xthal_mmu_pagesz_log2[] table) */
u32 vpn_const_mask;
u32 vpn_const_value;
u64 ppn_const_mask; /* future may support pa_bits > 32 */
u64 ppn_const_value;
u32 ppn_id_mask; /* paddr bits taken directly from vaddr */
bool backgnd_match; /* 0 or 1 */
/* These are defined in terms of the XTHAL_CACHE_xxx bits: */
u8 fca_const_mask; /* ITLB/UTLB only! */
u8 fca_const_value; /* ITLB/UTLB only! */
u8 lca_const_mask; /* DTLB/UTLB only! */
u8 lca_const_value; /* DTLB/UTLB only! */
u8 sca_const_mask; /* DTLB/UTLB only! */
u8 sca_const_value; /* DTLB/UTLB only! */
/* These define an encoding that map 5 bits in TLB and PTE entries to */
/* 8 bits (FCA, ITLB), 16 bits (LCA+SCA, DTLB) or 24 bits (FCA+LCA+SCA, UTLB): */
/* (they may be moved to struct XtHalMmuTlb) */
u8 ca_bits; /* number of bits in TLB/PTE entries for cache attributes */
u32 * ca_map; /* pointer to array of 2^ca_bits entries of FCA+LCA+SCA bits */
} XtHalMmuTlbWay;
/*
* The way to determine whether protection support is present in core
* is to [look at Xthal_mmu_rings ???].
* Give info on memory requirements for MMU tables and other in-memory
* data structures (globally, per task, base and per page, etc.) - whatever bounds can be calculated.
*/
/* Default vectors: */
xthal_immu_fetch_miss_vector
xthal_dmmu_load_miss_vector
xthal_dmmu_store_miss_vector
/* Functions called when a fault is detected: */
typedef void (XtHalMmuFaultFunc)( unsigned vaddr, ...context... );
/* Or, */
/* a? = vaddr */
/* a? = context... */
/* PS.xxx = xxx */
XtHalMMuFaultFunc *Xthal_immu_fetch_fault_func;
XtHalMMuFaultFunc *Xthal_dmmu_load_fault_func;
XtHalMMuFaultFunc *Xthal_dmmu_store_fault_func;
/* Default Handlers: */
/* The user and/or kernel exception handlers may jump to these handlers to handle the relevant exceptions,
* according to the value of EXCCAUSE. The exact register state on entry to these handlers is TBD. */
/* When multiple TLB entries match (hit) on the same access: */
xthal_immu_fetch_multihit_handler
xthal_dmmu_load_multihit_handler
xthal_dmmu_store_multihit_handler
/* Protection violations according to cache attributes, and other cache attribute mismatches: */
xthal_immu_fetch_attr_handler
xthal_dmmu_load_attr_handler
xthal_dmmu_store_attr_handler
/* Protection violations due to insufficient ring level: */
xthal_immu_fetch_priv_handler
xthal_dmmu_load_priv_handler
xthal_dmmu_store_priv_handler
/* Alignment exception handlers (if supported by the particular Xtensa MMU configuration): */
xthal_dmmu_load_align_handler
xthal_dmmu_store_align_handler
/* Or, alternatively, the OS user and/or kernel exception handlers may simply jump to the
* following entry points which will handle any values of EXCCAUSE not handled by the OS: */
xthal_user_exc_default_handler
xthal_kernel_exc_default_handler
#endif /*0*/
#ifdef INCLUDE_DEPRECATED_HAL_CODE
extern const unsigned char Xthal_have_old_exc_arch;
extern const unsigned char Xthal_have_mmu;
extern const unsigned int Xthal_num_regs;
extern const unsigned char Xthal_num_iroms;
extern const unsigned char Xthal_num_irams;
extern const unsigned char Xthal_num_droms;
extern const unsigned char Xthal_num_drams;
extern const unsigned int Xthal_configid0;
extern const unsigned int Xthal_configid1;
#endif
#ifdef INCLUDE_DEPRECATED_HAL_DEBUG_CODE
#define XTHAL_24_BIT_BREAK 0x80000000
#define XTHAL_16_BIT_BREAK 0x40000000
extern const unsigned short Xthal_ill_inst_16[16];
#define XTHAL_DEST_REG 0xf0000000 /* Mask for destination register */
#define XTHAL_DEST_REG_INST 0x08000000 /* Branch address is in register */
#define XTHAL_DEST_REL_INST 0x04000000 /* Branch address is relative */
#define XTHAL_RFW_INST 0x00000800
#define XTHAL_RFUE_INST 0x00000400
#define XTHAL_RFI_INST 0x00000200
#define XTHAL_RFE_INST 0x00000100
#define XTHAL_RET_INST 0x00000080
#define XTHAL_BREAK_INST 0x00000040
#define XTHAL_SYSCALL_INST 0x00000020
#define XTHAL_LOOP_END 0x00000010 /* Not set by xthal_inst_type */
#define XTHAL_JUMP_INST 0x00000008 /* Call or jump instruction */
#define XTHAL_BRANCH_INST 0x00000004 /* Branch instruction */
#define XTHAL_24_BIT_INST 0x00000002
#define XTHAL_16_BIT_INST 0x00000001
typedef struct xthal_state {
unsigned pc;
unsigned ar[16];
unsigned lbeg;
unsigned lend;
unsigned lcount;
unsigned extra_ptr;
unsigned cpregs_ptr[XTHAL_MAX_CPS];
} XTHAL_STATE;
extern unsigned int xthal_inst_type(void *addr);
extern unsigned int xthal_branch_addr(void *addr);
extern unsigned int xthal_get_npc(XTHAL_STATE *user_state);
#endif /* INCLUDE_DEPRECATED_HAL_DEBUG_CODE */
#ifdef __cplusplus
}
#endif
#endif /*!__ASSEMBLY__ */
#endif /*XTENSA_HAL_H*/

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include/asm-xtensa/xtensa/simcall.h
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@ -1,130 +0,0 @@
#ifndef SIMCALL_INCLUDED
#define SIMCALL_INCLUDED
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/simcall.h - Simulator call numbers
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of
* this archive for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
/*
* System call like services offered by the simulator host.
* These are modeled after the Linux 2.4 kernel system calls
* for Xtensa processors. However not all system calls and
* not all functionality of a given system call are implemented,
* or necessarily have well defined or equivalent semantics in
* the context of a simulation (as opposed to a Unix kernel).
*
* These services behave largely as if they had been invoked
* as a task in the simulator host's operating system
* (eg. files accessed are those of the simulator host).
* However, these SIMCALLs model a virtual operating system
* so that various definitions, bit assignments etc
* (eg. open mode bits, errno values, etc) are independent
* of the host operating system used to run the simulation.
* Rather these definitions are specific to the Xtensa ISS.
* This way Xtensa ISA code written to use these SIMCALLs
* can (in principle) be simulated on any host.
*
* Up to 6 parameters are passed in registers a3 to a8
* (note the 6th parameter isn't passed on the stack,
* unlike windowed function calling conventions).
* The return value is in a2. A negative value in the
* range -4096 to -1 indicates a negated error code to be
* reported in errno with a return value of -1, otherwise
* the value in a2 is returned as is.
*/
/* These #defines need to match what's in Xtensa/OS/vxworks/xtiss/simcalls.c */
#define SYS_nop 0 /* n/a - setup; used to flush register windows */
#define SYS_exit 1 /*x*/
#define SYS_fork 2
#define SYS_read 3 /*x*/
#define SYS_write 4 /*x*/
#define SYS_open 5 /*x*/
#define SYS_close 6 /*x*/
#define SYS_rename 7 /*x 38 - waitpid */
#define SYS_creat 8 /*x*/
#define SYS_link 9 /*x (not implemented on WIN32) */
#define SYS_unlink 10 /*x*/
#define SYS_execv 11 /* n/a - execve */
#define SYS_execve 12 /* 11 - chdir */
#define SYS_pipe 13 /* 42 - time */
#define SYS_stat 14 /* 106 - mknod */
#define SYS_chmod 15
#define SYS_chown 16 /* 202 - lchown */
#define SYS_utime 17 /* 30 - break */
#define SYS_wait 18 /* n/a - oldstat */
#define SYS_lseek 19 /*x*/
#define SYS_getpid 20
#define SYS_isatty 21 /* n/a - mount */
#define SYS_fstat 22 /* 108 - oldumount */
#define SYS_time 23 /* 13 - setuid */
#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
#define SYS_socket 26
#define SYS_sendto 27
#define SYS_recvfrom 28
#define SYS_select_one 29 /* not compitible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
/*
* Other...
*/
#define SYS_iss_argc 1000 /* returns value of argc */
#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
/*
* SIMCALLs for the ferret memory debugger. All are invoked by
* libferret.a ... ( Xtensa/Target-Libs/ferret )
*/
#define SYS_ferret 1010
#define SYS_malloc 1011
#define SYS_free 1012
#define SYS_more_heap 1013
#define SYS_no_heap 1014
/*
* Extra SIMCALLs for GDB:
*/
#define SYS_gdb_break -1 /* invoked by XTOS on user exceptions if EPC points
to a break.n/break, regardless of cause! */
#define SYS_xmon_out -2 /* invoked by XMON: ... */
#define SYS_xmon_in -3 /* invoked by XMON: ... */
#define SYS_xmon_flush -4 /* invoked by XMON: ... */
#define SYS_gdb_abort -5 /* invoked by XTOS in _xtos_panic() */
#define SYS_gdb_illegal_inst -6 /* invoked by XTOS for illegal instructions (too deeply) */
#define SYS_xmon_init -7 /* invoked by XMON: ... */
#define SYS_gdb_enter_sktloop -8 /* invoked by XTOS on debug exceptions */
/*
* SIMCALLs for vxWorks xtiss BSP:
*/
#define SYS_setup_ppp_pipes -83
#define SYS_log_msg -84
/*
* Test SIMCALLs:
*/
#define SYS_test_write_state -100
#define SYS_test_read_state -101
/*
* SYS_select_one specifiers
*/
#define XTISS_SELECT_ONE_READ 1
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
#endif /* !SIMCALL_INCLUDED */

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include/asm-xtensa/xtensa/xt2000-uart.h
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#ifndef _uart_h_included_
#define _uart_h_included_
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/xt2000-uart.h -- NatSemi PC16552D DUART
* definitions
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/xt2000.h>
/* 16550 UART DEVICE REGISTERS
The XT2000 board aligns each register to a 32-bit word but the UART device only uses
one byte of the word, which is the least-significant byte regardless of the
endianness of the core (ie. byte offset 0 for little-endian and 3 for big-endian).
So if using word accesses then endianness doesn't matter.
The macros provided here do that.
*/
struct uart_dev_s {
union {
unsigned int rxb; /* DLAB=0: receive buffer, read-only */
unsigned int txb; /* DLAB=0: transmit buffer, write-only */
unsigned int dll; /* DLAB=1: divisor, least-significant byte latch (was write-only?) */
} w0;
union {
unsigned int ier; /* DLAB=0: interrupt-enable register (was write-only?) */
unsigned int dlm; /* DLAB=1: divisor, most-significant byte latch (was write-only?) */
} w1;
union {
unsigned int isr; /* DLAB=0: interrupt status register, read-only */
unsigned int fcr; /* DLAB=0: FIFO control register, write-only */
unsigned int afr; /* DLAB=1: alternate function register */
} w2;
unsigned int lcr; /* line control-register, write-only */
unsigned int mcr; /* modem control-regsiter, write-only */
unsigned int lsr; /* line status register, read-only */
unsigned int msr; /* modem status register, read-only */
unsigned int scr; /* scratch regsiter, read/write */
};
#define _RXB(u) ((u)->w0.rxb)
#define _TXB(u) ((u)->w0.txb)
#define _DLL(u) ((u)->w0.dll)
#define _IER(u) ((u)->w1.ier)
#define _DLM(u) ((u)->w1.dlm)
#define _ISR(u) ((u)->w2.isr)
#define _FCR(u) ((u)->w2.fcr)
#define _AFR(u) ((u)->w2.afr)
#define _LCR(u) ((u)->lcr)
#define _MCR(u) ((u)->mcr)
#define _LSR(u) ((u)->lsr)
#define _MSR(u) ((u)->msr)
#define _SCR(u) ((u)->scr)
typedef volatile struct uart_dev_s uart_dev_t;
/* IER bits */
#define RCVR_DATA_REG_INTENABLE 0x01
#define XMIT_HOLD_REG_INTENABLE 0x02
#define RCVR_STATUS_INTENABLE 0x04
#define MODEM_STATUS_INTENABLE 0x08
/* FCR bits */
#define _FIFO_ENABLE 0x01
#define RCVR_FIFO_RESET 0x02
#define XMIT_FIFO_RESET 0x04
#define DMA_MODE_SELECT 0x08
#define RCVR_TRIGGER_LSB 0x40
#define RCVR_TRIGGER_MSB 0x80
/* AFR bits */
#define AFR_CONC_WRITE 0x01
#define AFR_BAUDOUT_SEL 0x02
#define AFR_RXRDY_SEL 0x04
/* ISR bits */
#define INT_STATUS(r) ((r)&1)
#define INT_PRIORITY(r) (((r)>>1)&0x7)
/* LCR bits */
#define WORD_LENGTH(n) (((n)-5)&0x3)
#define STOP_BIT_ENABLE 0x04
#define PARITY_ENABLE 0x08
#define EVEN_PARITY 0x10
#define FORCE_PARITY 0x20
#define XMIT_BREAK 0x40
#define DLAB_ENABLE 0x80
/* MCR bits */
#define _DTR 0x01
#define _RTS 0x02
#define _OP1 0x04
#define _OP2 0x08
#define LOOP_BACK 0x10
/* LSR Bits */
#define RCVR_DATA_READY 0x01
#define OVERRUN_ERROR 0x02
#define PARITY_ERROR 0x04
#define FRAMING_ERROR 0x08
#define BREAK_INTERRUPT 0x10
#define XMIT_HOLD_EMPTY 0x20
#define XMIT_EMPTY 0x40
#define FIFO_ERROR 0x80
#define RCVR_READY(u) (_LSR(u)&RCVR_DATA_READY)
#define XMIT_READY(u) (_LSR(u)&XMIT_HOLD_EMPTY)
/* MSR bits */
#define _RDR 0x01
#define DELTA_DSR 0x02
#define DELTA_RI 0x04
#define DELTA_CD 0x08
#define _CTS 0x10
#define _DSR 0x20
#define _RI 0x40
#define _CD 0x80
/* prototypes */
void uart_init( uart_dev_t *u, int bitrate );
void uart_out( uart_dev_t *u, char c );
void uart_puts( uart_dev_t *u, char *s );
char uart_in( uart_dev_t *u );
void uart_enable_rcvr_int( uart_dev_t *u );
void uart_disable_rcvr_int( uart_dev_t *u );
#ifdef DUART16552_1_VADDR
/* DUART present. */
#define DUART_1_BASE (*(uart_dev_t*)DUART16552_1_VADDR)
#define DUART_2_BASE (*(uart_dev_t*)DUART16552_2_VADDR)
#define UART1_PUTS(s) uart_puts( &DUART_1_BASE, s )
#define UART2_PUTS(s) uart_puts( &DUART_2_BASE, s )
#else
/* DUART not configured, use dummy placeholders to allow compiles to work. */
#define DUART_1_BASE (*(uart_dev_t*)0)
#define DUART_2_BASE (*(uart_dev_t*)0)
#define UART1_PUTS(s)
#define UART2_PUTS(s)
#endif
/* Compute 16-bit divisor for baudrate generator, with rounding: */
#define DUART_DIVISOR(crystal,speed) (((crystal)/16 + (speed)/2)/(speed))
#endif /*_uart_h_included_*/

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include/asm-xtensa/xtensa/xt2000.h
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#ifndef _INC_XT2000_H_
#define _INC_XT2000_H_
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* include/asm-xtensa/xtensa/xt2000.h - Definitions specific to the
* Tensilica XT2000 Emulation Board
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/config/core.h>
#include <xtensa/config/system.h>
/*
* Default assignment of XT2000 devices to external interrupts.
*/
/* Ethernet interrupt: */
#ifdef XCHAL_EXTINT3_NUM
#define SONIC83934_INTNUM XCHAL_EXTINT3_NUM
#define SONIC83934_INTLEVEL XCHAL_EXTINT3_LEVEL
#define SONIC83934_INTMASK XCHAL_EXTINT3_MASK
#else
#define SONIC83934_INTMASK 0
#endif
/* DUART channel 1 interrupt (P1 - console): */
#ifdef XCHAL_EXTINT4_NUM
#define DUART16552_1_INTNUM XCHAL_EXTINT4_NUM
#define DUART16552_1_INTLEVEL XCHAL_EXTINT4_LEVEL
#define DUART16552_1_INTMASK XCHAL_EXTINT4_MASK
#else
#define DUART16552_1_INTMASK 0
#endif
/* DUART channel 2 interrupt (P2 - 2nd serial port): */
#ifdef XCHAL_EXTINT5_NUM
#define DUART16552_2_INTNUM XCHAL_EXTINT5_NUM
#define DUART16552_2_INTLEVEL XCHAL_EXTINT5_LEVEL
#define DUART16552_2_INTMASK XCHAL_EXTINT5_MASK
#else
#define DUART16552_2_INTMASK 0
#endif
/* FPGA-combined PCI/etc interrupts: */
#ifdef XCHAL_EXTINT6_NUM
#define XT2000_FPGAPCI_INTNUM XCHAL_EXTINT6_NUM
#define XT2000_FPGAPCI_INTLEVEL XCHAL_EXTINT6_LEVEL
#define XT2000_FPGAPCI_INTMASK XCHAL_EXTINT6_MASK
#else
#define XT2000_FPGAPCI_INTMASK 0
#endif
/*
* Device addresses.
*
* Note: for endianness-independence, use 32-bit loads and stores for all
* register accesses to Ethernet, DUART and LED devices. Undefined bits
* may need to be masked out if needed when reading if the actual register
* size is smaller than 32 bits.
*
* Note: XT2000 bus byte lanes are defined in terms of msbyte and lsbyte
* relative to the processor. So 32-bit registers are accessed consistently
* from both big and little endian processors. However, this means byte
* sequences are not consistent between big and little endian processors.
* This is fine for RAM, and for ROM if ROM is created for a specific
* processor (and thus has correct byte sequences). However this may be
* unexpected for Flash, which might contain a file-system that one wants
* to use for multiple processor configurations (eg. the Flash might contain
* the Ethernet card's address, endianness-independent application data, etc).
* That is, byte sequences written in Flash by a core of a given endianness
* will be byte-swapped when seen by a core of the other endianness.
* Someone implementing an endianness-independent Flash file system will
* likely handle this byte-swapping issue in the Flash driver software.
*/
#define DUART16552_XTAL_FREQ 18432000 /* crystal frequency in Hz */
#define XTBOARD_FLASH_MAXSIZE 0x4000000 /* 64 MB (max; depends on what is socketed!) */
#define XTBOARD_EPROM_MAXSIZE 0x0400000 /* 4 MB (max; depends on what is socketed!) */
#define XTBOARD_EEPROM_MAXSIZE 0x0080000 /* 512 kB (max; depends on what is socketed!) */
#define XTBOARD_ASRAM_SIZE 0x0100000 /* 1 MB */
#define XTBOARD_PCI_MEM_SIZE 0x8000000 /* 128 MB (allocated) */
#define XTBOARD_PCI_IO_SIZE 0x1000000 /* 16 MB (allocated) */
#ifdef XSHAL_IOBLOCK_BYPASS_PADDR
/* PCI memory space: */
# define XTBOARD_PCI_MEM_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0x0000000)
/* Socketed Flash (eg. 2 x 16-bit devices): */
# define XTBOARD_FLASH_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0x8000000)
/* PCI I/O space: */
# define XTBOARD_PCI_IO_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xC000000)
/* V3 PCI interface chip register/config space: */
# define XTBOARD_V3PCI_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD000000)
/* Bus Interface registers: */
# define XTBOARD_BUSINT_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD010000)
/* FPGA registers: */
# define XT2000_FPGAREGS_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD020000)
/* SONIC SN83934 Ethernet controller/transceiver: */
# define SONIC83934_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD030000)
/* 8-character bitmapped LED display: */
# define XTBOARD_LED_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD040000)
/* National-Semi PC16552D DUART: */
# define DUART16552_1_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD050020) /* channel 1 (P1 - console) */
# define DUART16552_2_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD050000) /* channel 2 (P2) */
/* Asynchronous Static RAM: */
# define XTBOARD_ASRAM_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD400000)
/* 8-bit EEPROM: */
# define XTBOARD_EEPROM_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD600000)
/* 2 x 16-bit EPROMs: */
# define XTBOARD_EPROM_PADDR (XSHAL_IOBLOCK_BYPASS_PADDR+0xD800000)
#endif /* XSHAL_IOBLOCK_BYPASS_PADDR */
/* These devices might be accessed cached: */
#ifdef XSHAL_IOBLOCK_CACHED_PADDR
# define XTBOARD_PCI_MEM_CACHED_PADDR (XSHAL_IOBLOCK_CACHED_PADDR+0x0000000)
# define XTBOARD_FLASH_CACHED_PADDR (XSHAL_IOBLOCK_CACHED_PADDR+0x8000000)
# define XTBOARD_ASRAM_CACHED_PADDR (XSHAL_IOBLOCK_CACHED_PADDR+0xD400000)
# define XTBOARD_EEPROM_CACHED_PADDR (XSHAL_IOBLOCK_CACHED_PADDR+0xD600000)
# define XTBOARD_EPROM_CACHED_PADDR (XSHAL_IOBLOCK_CACHED_PADDR+0xD800000)
#endif /* XSHAL_IOBLOCK_CACHED_PADDR */
/*** Same thing over again, this time with virtual addresses: ***/
#ifdef XSHAL_IOBLOCK_BYPASS_VADDR
/* PCI memory space: */
# define XTBOARD_PCI_MEM_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0x0000000)
/* Socketed Flash (eg. 2 x 16-bit devices): */
# define XTBOARD_FLASH_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0x8000000)
/* PCI I/O space: */
# define XTBOARD_PCI_IO_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xC000000)
/* V3 PCI interface chip register/config space: */
# define XTBOARD_V3PCI_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD000000)
/* Bus Interface registers: */
# define XTBOARD_BUSINT_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD010000)
/* FPGA registers: */
# define XT2000_FPGAREGS_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD020000)
/* SONIC SN83934 Ethernet controller/transceiver: */
# define SONIC83934_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD030000)
/* 8-character bitmapped LED display: */
# define XTBOARD_LED_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD040000)
/* National-Semi PC16552D DUART: */
# define DUART16552_1_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD050020) /* channel 1 (P1 - console) */
# define DUART16552_2_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD050000) /* channel 2 (P2) */
/* Asynchronous Static RAM: */
# define XTBOARD_ASRAM_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD400000)
/* 8-bit EEPROM: */
# define XTBOARD_EEPROM_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD600000)
/* 2 x 16-bit EPROMs: */
# define XTBOARD_EPROM_VADDR (XSHAL_IOBLOCK_BYPASS_VADDR+0xD800000)
#endif /* XSHAL_IOBLOCK_BYPASS_VADDR */
/* These devices might be accessed cached: */
#ifdef XSHAL_IOBLOCK_CACHED_VADDR
# define XTBOARD_PCI_MEM_CACHED_VADDR (XSHAL_IOBLOCK_CACHED_VADDR+0x0000000)
# define XTBOARD_FLASH_CACHED_VADDR (XSHAL_IOBLOCK_CACHED_VADDR+0x8000000)
# define XTBOARD_ASRAM_CACHED_VADDR (XSHAL_IOBLOCK_CACHED_VADDR+0xD400000)
# define XTBOARD_EEPROM_CACHED_VADDR (XSHAL_IOBLOCK_CACHED_VADDR+0xD600000)
# define XTBOARD_EPROM_CACHED_VADDR (XSHAL_IOBLOCK_CACHED_VADDR+0xD800000)
#endif /* XSHAL_IOBLOCK_CACHED_VADDR */
/* System ROM: */
#define XTBOARD_ROM_SIZE XSHAL_ROM_SIZE
#ifdef XSHAL_ROM_VADDR
#define XTBOARD_ROM_VADDR XSHAL_ROM_VADDR
#endif
#ifdef XSHAL_ROM_PADDR
#define XTBOARD_ROM_PADDR XSHAL_ROM_PADDR
#endif
/* System RAM: */
#define XTBOARD_RAM_SIZE XSHAL_RAM_SIZE
#ifdef XSHAL_RAM_VADDR
#define XTBOARD_RAM_VADDR XSHAL_RAM_VADDR
#endif
#ifdef XSHAL_RAM_PADDR
#define XTBOARD_RAM_PADDR XSHAL_RAM_PADDR
#endif
#define XTBOARD_RAM_BYPASS_VADDR XSHAL_RAM_BYPASS_VADDR
#define XTBOARD_RAM_BYPASS_PADDR XSHAL_RAM_BYPASS_PADDR
/*
* Things that depend on device addresses.
*/
#define XTBOARD_CACHEATTR_WRITEBACK XSHAL_XT2000_CACHEATTR_WRITEBACK
#define XTBOARD_CACHEATTR_WRITEALLOC XSHAL_XT2000_CACHEATTR_WRITEALLOC
#define XTBOARD_CACHEATTR_WRITETHRU XSHAL_XT2000_CACHEATTR_WRITETHRU
#define XTBOARD_CACHEATTR_BYPASS XSHAL_XT2000_CACHEATTR_BYPASS
#define XTBOARD_CACHEATTR_DEFAULT XSHAL_XT2000_CACHEATTR_DEFAULT
#define XTBOARD_BUSINT_PIPE_REGIONS XSHAL_XT2000_PIPE_REGIONS
#define XTBOARD_BUSINT_SDRAM_REGIONS XSHAL_XT2000_SDRAM_REGIONS
/*
* BusLogic (FPGA) registers.
* All these registers are normally accessed using 32-bit loads/stores.
*/
/* Register offsets: */
#define XT2000_DATECD_OFS 0x00 /* date code (read-only) */
#define XT2000_STSREG_OFS 0x04 /* status (read-only) */
#define XT2000_SYSLED_OFS 0x08 /* system LED */
#define XT2000_WRPROT_OFS 0x0C /* write protect */
#define XT2000_SWRST_OFS 0x10 /* software reset */
#define XT2000_SYSRST_OFS 0x14 /* system (peripherals) reset */
#define XT2000_IMASK_OFS 0x18 /* interrupt mask */
#define XT2000_ISTAT_OFS 0x1C /* interrupt status */
#define XT2000_V3CFG_OFS 0x20 /* V3 config (V320 PCI) */
/* Physical register addresses: */
#ifdef XT2000_FPGAREGS_PADDR
#define XT2000_DATECD_PADDR (XT2000_FPGAREGS_PADDR+XT2000_DATECD_OFS)
#define XT2000_STSREG_PADDR (XT2000_FPGAREGS_PADDR+XT2000_STSREG_OFS)
#define XT2000_SYSLED_PADDR (XT2000_FPGAREGS_PADDR+XT2000_SYSLED_OFS)
#define XT2000_WRPROT_PADDR (XT2000_FPGAREGS_PADDR+XT2000_WRPROT_OFS)
#define XT2000_SWRST_PADDR (XT2000_FPGAREGS_PADDR+XT2000_SWRST_OFS)
#define XT2000_SYSRST_PADDR (XT2000_FPGAREGS_PADDR+XT2000_SYSRST_OFS)
#define XT2000_IMASK_PADDR (XT2000_FPGAREGS_PADDR+XT2000_IMASK_OFS)
#define XT2000_ISTAT_PADDR (XT2000_FPGAREGS_PADDR+XT2000_ISTAT_OFS)
#define XT2000_V3CFG_PADDR (XT2000_FPGAREGS_PADDR+XT2000_V3CFG_OFS)
#endif
/* Virtual register addresses: */
#ifdef XT2000_FPGAREGS_VADDR
#define XT2000_DATECD_VADDR (XT2000_FPGAREGS_VADDR+XT2000_DATECD_OFS)
#define XT2000_STSREG_VADDR (XT2000_FPGAREGS_VADDR+XT2000_STSREG_OFS)
#define XT2000_SYSLED_VADDR (XT2000_FPGAREGS_VADDR+XT2000_SYSLED_OFS)
#define XT2000_WRPROT_VADDR (XT2000_FPGAREGS_VADDR+XT2000_WRPROT_OFS)
#define XT2000_SWRST_VADDR (XT2000_FPGAREGS_VADDR+XT2000_SWRST_OFS)
#define XT2000_SYSRST_VADDR (XT2000_FPGAREGS_VADDR+XT2000_SYSRST_OFS)
#define XT2000_IMASK_VADDR (XT2000_FPGAREGS_VADDR+XT2000_IMASK_OFS)
#define XT2000_ISTAT_VADDR (XT2000_FPGAREGS_VADDR+XT2000_ISTAT_OFS)
#define XT2000_V3CFG_VADDR (XT2000_FPGAREGS_VADDR+XT2000_V3CFG_OFS)
/* Register access (for C code): */
#define XT2000_DATECD_REG (*(volatile unsigned*) XT2000_DATECD_VADDR)
#define XT2000_STSREG_REG (*(volatile unsigned*) XT2000_STSREG_VADDR)
#define XT2000_SYSLED_REG (*(volatile unsigned*) XT2000_SYSLED_VADDR)
#define XT2000_WRPROT_REG (*(volatile unsigned*) XT2000_WRPROT_VADDR)
#define XT2000_SWRST_REG (*(volatile unsigned*) XT2000_SWRST_VADDR)
#define XT2000_SYSRST_REG (*(volatile unsigned*) XT2000_SYSRST_VADDR)
#define XT2000_IMASK_REG (*(volatile unsigned*) XT2000_IMASK_VADDR)
#define XT2000_ISTAT_REG (*(volatile unsigned*) XT2000_ISTAT_VADDR)
#define XT2000_V3CFG_REG (*(volatile unsigned*) XT2000_V3CFG_VADDR)
#endif
/* DATECD (date code) bit fields: */
/* BCD-coded month (01..12): */
#define XT2000_DATECD_MONTH_SHIFT 24
#define XT2000_DATECD_MONTH_BITS 8
#define XT2000_DATECD_MONTH_MASK 0xFF000000
/* BCD-coded day (01..31): */
#define XT2000_DATECD_DAY_SHIFT 16
#define XT2000_DATECD_DAY_BITS 8
#define XT2000_DATECD_DAY_MASK 0x00FF0000
/* BCD-coded year (2001..9999): */
#define XT2000_DATECD_YEAR_SHIFT 0
#define XT2000_DATECD_YEAR_BITS 16
#define XT2000_DATECD_YEAR_MASK 0x0000FFFF
/* STSREG (status) bit fields: */
/* Switch SW3 setting bit fields (0=off/up, 1=on/down): */
#define XT2000_STSREG_SW3_SHIFT 0
#define XT2000_STSREG_SW3_BITS 4
#define XT2000_STSREG_SW3_MASK 0x0000000F
/* Boot-select bits of switch SW3: */
#define XT2000_STSREG_BOOTSEL_SHIFT 0
#define XT2000_STSREG_BOOTSEL_BITS 2
#define XT2000_STSREG_BOOTSEL_MASK 0x00000003
/* Boot-select values: */
#define XT2000_STSREG_BOOTSEL_FLASH 0
#define XT2000_STSREG_BOOTSEL_EPROM16 1
#define XT2000_STSREG_BOOTSEL_PROM8 2
#define XT2000_STSREG_BOOTSEL_ASRAM 3
/* User-defined bits of switch SW3: */
#define XT2000_STSREG_SW3_2_SHIFT 2
#define XT2000_STSREG_SW3_2_MASK 0x00000004
#define XT2000_STSREG_SW3_3_SHIFT 3
#define XT2000_STSREG_SW3_3_MASK 0x00000008
/* SYSLED (system LED) bit fields: */
/* LED control bit (0=off, 1=on): */
#define XT2000_SYSLED_LEDON_SHIFT 0
#define XT2000_SYSLED_LEDON_MASK 0x00000001
/* WRPROT (write protect) bit fields (0=writable, 1=write-protected [default]): */
/* Flash write protect: */
#define XT2000_WRPROT_FLWP_SHIFT 0
#define XT2000_WRPROT_FLWP_MASK 0x00000001
/* Reserved but present write protect bits: */
#define XT2000_WRPROT_WRP_SHIFT 1
#define XT2000_WRPROT_WRP_BITS 7
#define XT2000_WRPROT_WRP_MASK 0x000000FE
/* SWRST (software reset; allows s/w to generate power-on equivalent reset): */
/* Software reset bits: */
#define XT2000_SWRST_SWR_SHIFT 0
#define XT2000_SWRST_SWR_BITS 16
#define XT2000_SWRST_SWR_MASK 0x0000FFFF
/* Software reset value -- writing this value resets the board: */
#define XT2000_SWRST_RESETVALUE 0x0000DEAD
/* SYSRST (system reset; controls reset of individual peripherals): */
/* All-device reset: */
#define XT2000_SYSRST_ALL_SHIFT 0
#define XT2000_SYSRST_ALL_BITS 4
#define XT2000_SYSRST_ALL_MASK 0x0000000F
/* HDSP-2534 LED display reset (1=reset, 0=nothing): */
#define XT2000_SYSRST_LED_SHIFT 0
#define XT2000_SYSRST_LED_MASK 0x00000001
/* Sonic DP83934 Ethernet controller reset (1=reset, 0=nothing): */
#define XT2000_SYSRST_SONIC_SHIFT 1
#define XT2000_SYSRST_SONIC_MASK 0x00000002
/* DP16552 DUART reset (1=reset, 0=nothing): */
#define XT2000_SYSRST_DUART_SHIFT 2
#define XT2000_SYSRST_DUART_MASK 0x00000004
/* V3 V320 PCI bridge controller reset (1=reset, 0=nothing): */
#define XT2000_SYSRST_V3_SHIFT 3
#define XT2000_SYSRST_V3_MASK 0x00000008
/* IMASK (interrupt mask; 0=disable, 1=enable): */
/* ISTAT (interrupt status; 0=inactive, 1=pending): */
/* PCI INTP interrupt: */
#define XT2000_INTMUX_PCI_INTP_SHIFT 2
#define XT2000_INTMUX_PCI_INTP_MASK 0x00000004
/* PCI INTS interrupt: */
#define XT2000_INTMUX_PCI_INTS_SHIFT 3
#define XT2000_INTMUX_PCI_INTS_MASK 0x00000008
/* PCI INTD interrupt: */
#define XT2000_INTMUX_PCI_INTD_SHIFT 4
#define XT2000_INTMUX_PCI_INTD_MASK 0x00000010
/* V320 PCI controller interrupt: */
#define XT2000_INTMUX_V3_SHIFT 5
#define XT2000_INTMUX_V3_MASK 0x00000020
/* PCI ENUM interrupt: */
#define XT2000_INTMUX_PCI_ENUM_SHIFT 6
#define XT2000_INTMUX_PCI_ENUM_MASK 0x00000040
/* PCI DEG interrupt: */
#define XT2000_INTMUX_PCI_DEG_SHIFT 7
#define XT2000_INTMUX_PCI_DEG_MASK 0x00000080
/* V3CFG (V3 config, V320 PCI controller): */
/* V3 address control (0=pass-thru, 1=V3 address bits 31:28 set to 4'b0001 [default]): */
#define XT2000_V3CFG_V3ADC_SHIFT 0
#define XT2000_V3CFG_V3ADC_MASK 0x00000001
/* I2C Devices */
#define XT2000_I2C_RTC_ID 0x68
#define XT2000_I2C_NVRAM0_ID 0x56 /* 1st 256 byte block */
#define XT2000_I2C_NVRAM1_ID 0x57 /* 2nd 256 byte block */
/* NVRAM Board Info structure: */
#define XT2000_NVRAM_SIZE 512
#define XT2000_NVRAM_BINFO_START 0x100
#define XT2000_NVRAM_BINFO_SIZE 0x20
#define XT2000_NVRAM_BINFO_VERSION 0x10 /* version 1.0 */
#if 0
#define XT2000_NVRAM_BINFO_VERSION_OFFSET 0x00
#define XT2000_NVRAM_BINFO_VERSION_SIZE 0x1
#define XT2000_NVRAM_BINFO_ETH_ADDR_OFFSET 0x02
#define XT2000_NVRAM_BINFO_ETH_ADDR_SIZE 0x6
#define XT2000_NVRAM_BINFO_SN_OFFSET 0x10
#define XT2000_NVRAM_BINFO_SN_SIZE 0xE
#define XT2000_NVRAM_BINFO_CRC_OFFSET 0x1E
#define XT2000_NVRAM_BINFO_CRC_SIZE 0x2
#endif /*0*/
#if !defined(__ASSEMBLY__) && !defined(_NOCLANGUAGE)
typedef struct xt2000_nvram_binfo {
unsigned char version;
unsigned char reserved1;
unsigned char eth_addr[6];
unsigned char reserved8[8];
unsigned char serialno[14];
unsigned char crc[2]; /* 16-bit CRC */
} xt2000_nvram_binfo;
#endif /*!__ASSEMBLY__ && !_NOCLANGUAGE*/
#endif /*_INC_XT2000_H_*/

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include/asm-xtensa/xtensa/xtboard.h
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@ -1,120 +0,0 @@
#ifndef _xtboard_h_included_
#define _xtboard_h_included_
/*
* THIS FILE IS GENERATED -- DO NOT MODIFY BY HAND
*
* xtboard.h -- Routines for getting useful information from the board.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2002 Tensilica Inc.
*/
#include <xtensa/xt2000.h>
#define XTBOARD_RTC_ERROR -1
#define XTBOARD_RTC_STOPPED -2
/* xt2000-i2cdev.c: */
typedef void XtboardDelayFunc( unsigned );
extern XtboardDelayFunc* xtboard_set_nsdelay_func( XtboardDelayFunc *delay_fn );
extern int xtboard_i2c_read (unsigned id, unsigned char *buf, unsigned addr, unsigned size);
extern int xtboard_i2c_write(unsigned id, unsigned char *buf, unsigned addr, unsigned size);
extern int xtboard_i2c_wait_nvram_ack(unsigned id, unsigned swtimer);
/* xtboard.c: */
extern int xtboard_nvram_read (unsigned addr, unsigned len, unsigned char *buf);
extern int xtboard_nvram_write(unsigned addr, unsigned len, unsigned char *buf);
extern int xtboard_nvram_binfo_read (xt2000_nvram_binfo *buf);
extern int xtboard_nvram_binfo_write(xt2000_nvram_binfo *buf);
extern int xtboard_nvram_binfo_valid(xt2000_nvram_binfo *buf);
extern int xtboard_ethermac_get(unsigned char *buf);
extern int xtboard_ethermac_set(unsigned char *buf);
/*+*----------------------------------------------------------------------------
/ Function: xtboard_get_rtc_time
/
/ Description: Get time stored in real-time clock.
/
/ Returns: time in seconds stored in real-time clock.
/-**----------------------------------------------------------------------------*/
extern unsigned xtboard_get_rtc_time(void);
/*+*----------------------------------------------------------------------------
/ Function: xtboard_set_rtc_time
/
/ Description: Set time stored in real-time clock.
/
/ Parameters: time -- time in seconds to store to real-time clock
/
/ Returns: 0 on success, xtboard_i2c_write() error code otherwise.
/-**----------------------------------------------------------------------------*/
extern int xtboard_set_rtc_time(unsigned time);
/* xtfreq.c: */
/*+*----------------------------------------------------------------------------
/ Function: xtboard_measure_sys_clk
/
/ Description: Get frequency of system clock.
/
/ Parameters: none
/
/ Returns: frequency of system clock.
/-**----------------------------------------------------------------------------*/
extern unsigned xtboard_measure_sys_clk(void);
#if 0 /* old stuff from xtboard.c: */
/*+*----------------------------------------------------------------------------
/ Function: xtboard_nvram valid
/
/ Description: Determines if data in NVRAM is valid.
/
/ Parameters: delay -- 10us delay function
/
/ Returns: 1 if NVRAM is valid, 0 otherwise
/-**----------------------------------------------------------------------------*/
extern unsigned xtboard_nvram_valid(void (*delay)( void ));
/*+*----------------------------------------------------------------------------
/ Function: xtboard_get_nvram_contents
/
/ Description: Returns contents of NVRAM.
/
/ Parameters: buf -- buffer to NVRAM contents.
/ delay -- 10us delay function
/
/ Returns: 1 if NVRAM is valid, 0 otherwise
/-**----------------------------------------------------------------------------*/
extern unsigned xtboard_get_nvram_contents(unsigned char *buf, void (*delay)( void ));
/*+*----------------------------------------------------------------------------
/ Function: xtboard_get_ether_addr
/
/ Description: Returns ethernet address of board.
/
/ Parameters: buf -- buffer to store ethernet address
/ delay -- 10us delay function
/
/ Returns: nothing.
/-**----------------------------------------------------------------------------*/
extern void xtboard_get_ether_addr(unsigned char *buf, void (*delay)( void ));
#endif /*0*/
#endif /*_xtboard_h_included_*/