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MIPS: Loongson: Split common loongson source code out

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To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin 2009-07-02 23:26:45 +08:00 committed by Ralf Baechle
parent 8e4971175a
commit 85749d24bc
24 changed files with 351 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
arch/mips/Kconfig
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@ -174,30 +174,15 @@ config LASAT
select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
select SYS_SUPPORTS_LITTLE_ENDIAN
config LEMOTE_FULOONG2E
bool "Lemote Fuloong2e mini-PC"
select ARCH_SPARSEMEM_ENABLE
select CEVT_R4K
select CSRC_R4K
select SYS_HAS_CPU_LOONGSON2
select DMA_NONCOHERENT
select BOOT_ELF32
select BOARD_SCACHE
select HAVE_STD_PC_SERIAL_PORT
select HW_HAS_PCI
select I8259
select ISA
select IRQ_CPU
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_HIGHMEM
select SYS_HAS_EARLY_PRINTK
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select CPU_HAS_WB
config MACH_LOONGSON
bool "Loongson family of machines"
help
Lemote Fuloong2e mini-PC board based on the Chinese Loongson-2E CPU and
an FPGA northbridge
This enables the support of Loongson family of machines.
Loongson is a family of general-purpose MIPS-compatible CPUs.
developed at Institute of Computing Technology (ICT),
Chinese Academy of Sciences (CAS) in the People's Republic
of China. The chief architect is Professor Weiwu Hu.
config MIPS_MALTA
bool "MIPS Malta board"
@ -668,6 +653,7 @@ source "arch/mips/sibyte/Kconfig"
source "arch/mips/txx9/Kconfig"
source "arch/mips/vr41xx/Kconfig"
source "arch/mips/cavium-octeon/Kconfig"
source "arch/mips/loongson/Kconfig"
endmenu

7
arch/mips/Makefile
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@ -314,11 +314,12 @@ cflags-$(CONFIG_WR_PPMC) += -I$(srctree)/arch/mips/include/asm/mach-wrppmc
load-$(CONFIG_WR_PPMC) += 0xffffffff80100000
#
# lemote fuloong2e mini-PC board
# Loongson family
#
core-$(CONFIG_LEMOTE_FULOONG2E) +=arch/mips/loongson/fuloong-2e/
core-$(CONFIG_MACH_LOONGSON) +=arch/mips/loongson/
cflags-$(CONFIG_MACH_LOONGSON) += -I$(srctree)/arch/mips/include/asm/mach-loongson \
-mno-branch-likely
load-$(CONFIG_LEMOTE_FULOONG2E) +=0xffffffff80100000
cflags-$(CONFIG_LEMOTE_FULOONG2E) += -I$(srctree)/arch/mips/include/asm/mach-loongson/
#
# MIPS Malta board

11
arch/mips/include/asm/mach-loongson/loongson.h
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@ -21,6 +21,10 @@
/* loongson internal northbridge initialization */
extern void bonito_irq_init(void);
/* machine-specific reboot/halt operation */
extern void mach_prepare_reboot(void);
extern void mach_prepare_shutdown(void);
/* environment arguments from bootloader */
extern unsigned long bus_clock, cpu_clock_freq;
extern unsigned long memsize, highmemsize;
@ -30,6 +34,13 @@ extern void __init prom_init_memory(void);
extern void __init prom_init_cmdline(void);
extern void __init prom_init_env(void);
/* irq operation functions */
extern void bonito_irqdispatch(void);
extern void __init bonito_irq_init(void);
extern void __init set_irq_trigger_mode(void);
extern void __init mach_init_irq(void);
extern void mach_irq_dispatch(unsigned int pending);
/* PCI Configuration Registers */
#define LOONGSON_PCI_ISR4C BONITO_PCI_REG(0x4c)

22
arch/mips/include/asm/mach-loongson/machine.h Normal file
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@ -0,0 +1,22 @@
/*
* Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
* Author: Wu Zhangjin <wuzj@lemote.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __ASM_MACH_LOONGSON_MACHINE_H
#define __ASM_MACH_LOONGSON_MACHINE_H
#ifdef CONFIG_LEMOTE_FULOONG2E
#define LOONGSON_UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
#define LOONGSON_MACHNAME "lemote-fuloong-2e-box"
#endif
#endif /* __ASM_MACH_LOONGSON_MACHINE_H */

30
arch/mips/include/asm/mach-loongson/mem.h Normal file
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@ -0,0 +1,30 @@
/*
* Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
* Author: Wu Zhangjin <wuzj@lemote.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __ASM_MACH_LOONGSON_MEM_H
#define __ASM_MACH_LOONGSON_MEM_H
/*
* On Lemote Loongson 2e
*
* the high memory space starts from 512M.
* the peripheral registers reside between 0x1000:0000 and 0x2000:0000.
*/
#ifdef CONFIG_LEMOTE_FULOONG2E
#define LOONGSON_HIGHMEM_START 0x20000000
#define LOONGSON_MMIO_MEM_START 0x10000000
#define LOONGSON_MMIO_MEM_END 0x20000000
#endif
#endif /* __ASM_MACH_LOONGSON_MEM_H */

12
arch/mips/include/asm/mach-loongson/pci.h
View File

@ -24,8 +24,14 @@
extern struct pci_ops bonito64_pci_ops;
#define LOONGSON2E_PCI_MEM_START BONITO_PCILO1_BASE
#define LOONGSON2E_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
#define LOONGSON2E_PCI_IO_START 0x00004000UL
#ifdef CONFIG_LEMOTE_FULOONG2E
/* this pci memory space is mapped by pcimap in pci.c */
#define LOONGSON_PCI_MEM_START BONITO_PCILO1_BASE
#define LOONGSON_PCI_MEM_END (BONITO_PCILO1_BASE + 0x04000000 * 2)
/* this is an offset from mips_io_port_base */
#define LOONGSON_PCI_IO_START 0x00004000UL
#endif
#endif /* !__ASM_MACH_LOONGSON_PCI_H_ */

31
arch/mips/loongson/Kconfig Normal file
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@ -0,0 +1,31 @@
choice
prompt "Machine Type"
depends on MACH_LOONGSON
config LEMOTE_FULOONG2E
bool "Lemote Fuloong(2e) mini-PC"
select ARCH_SPARSEMEM_ENABLE
select CEVT_R4K
select CSRC_R4K
select SYS_HAS_CPU_LOONGSON2
select DMA_NONCOHERENT
select BOOT_ELF32
select BOARD_SCACHE
select HW_HAS_PCI
select I8259
select ISA
select IRQ_CPU
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_HIGHMEM
select SYS_HAS_EARLY_PRINTK
select GENERIC_HARDIRQS_NO__DO_IRQ
select GENERIC_ISA_DMA_SUPPORT_BROKEN
select CPU_HAS_WB
help
Lemote Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
an FPGA northbridge
Lemote Fuloong(2e) mini PC have a VIA686B south bridge.
endchoice

11
arch/mips/loongson/Makefile Normal file
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@ -0,0 +1,11 @@
#
# Common code for all Loongson based systems
#
obj-$(CONFIG_MACH_LOONGSON) += common/
#
# Lemote Fuloong mini-PC (Loongson 2E-based)
#
obj-$(CONFIG_LEMOTE_FULOONG2E) += fuloong-2e/

11
arch/mips/loongson/common/Makefile Normal file
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@ -0,0 +1,11 @@
#
# Makefile for loongson based machines.
#
obj-y += setup.o init.o cmdline.o env.o time.o reset.o irq.o \
pci.o bonito-irq.o mem.o
#
# Early printk support
#
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o

0
arch/mips/loongson/fuloong-2e/bonito-irq.c → arch/mips/loongson/common/bonito-irq.c
View File

0
arch/mips/loongson/fuloong-2e/cmdline.c → arch/mips/loongson/common/cmdline.c
View File

5
arch/mips/loongson/fuloong-2e/early_printk.c → arch/mips/loongson/common/early_printk.c
View File

@ -12,8 +12,7 @@
#include <linux/serial_reg.h>
#include <loongson.h>
#define UART_BASE (BONITO_PCIIO_BASE + 0x3f8)
#include <machine.h>
#define PORT(base, offset) (u8 *)(base + offset)
@ -30,7 +29,7 @@ static inline void serial_out(phys_addr_t base, int offset, int value)
void prom_putchar(char c)
{
phys_addr_t uart_base =
(phys_addr_t) ioremap_nocache(UART_BASE, 8);
(phys_addr_t) ioremap_nocache(LOONGSON_UART_BASE, 8);
while ((serial_in(uart_base, UART_LSR) & UART_LSR_THRE) == 0)
;

0
arch/mips/loongson/fuloong-2e/env.c → arch/mips/loongson/common/env.c
View File

0
arch/mips/loongson/fuloong-2e/init.c → arch/mips/loongson/common/init.c
View File

74
arch/mips/loongson/common/irq.c Normal file
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@ -0,0 +1,74 @@
/*
* Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <loongson.h>
/*
* the first level int-handler will jump here if it is a bonito irq
*/
void bonito_irqdispatch(void)
{
u32 int_status;
int i;
/* workaround the IO dma problem: let cpu looping to allow DMA finish */
int_status = BONITO_INTISR;
if (int_status & (1 << 10)) {
while (int_status & (1 << 10)) {
udelay(1);
int_status = BONITO_INTISR;
}
}
/* Get pending sources, masked by current enables */
int_status = BONITO_INTISR & BONITO_INTEN;
if (int_status != 0) {
i = __ffs(int_status);
int_status &= ~(1 << i);
do_IRQ(BONITO_IRQ_BASE + i);
}
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending;
pending = read_c0_cause() & read_c0_status() & ST0_IM;
/* machine-specific plat_irq_dispatch */
mach_irq_dispatch(pending);
}
void __init arch_init_irq(void)
{
/*
* Clear all of the interrupts while we change the able around a bit.
* int-handler is not on bootstrap
*/
clear_c0_status(ST0_IM | ST0_BEV);
local_irq_disable();
/* setting irq trigger mode */
set_irq_trigger_mode();
/* no steer */
BONITO_INTSTEER = 0;
/*
* Mask out all interrupt by writing "1" to all bit position in
* the interrupt reset reg.
*/
BONITO_INTENCLR = ~0;
/* machine specific irq init */
mach_init_irq();
}

4
arch/mips/loongson/fuloong-2e/machtype.c → arch/mips/loongson/common/machtype.c
View File

@ -8,8 +8,10 @@
* option) any later version.
*/
#include <machine.h>
const char *get_system_type(void)
{
return "lemote-fuloong-2e-box";
return LOONGSON_MACHNAME;
}

11
arch/mips/loongson/fuloong-2e/mem.c → arch/mips/loongson/common/mem.c
View File

@ -11,13 +11,15 @@
#include <asm/bootinfo.h>
#include <loongson.h>
#include <mem.h>
void __init prom_init_memory(void)
{
add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
#ifdef CONFIG_64BIT
if (highmemsize > 0)
add_memory_region(0x20000000, highmemsize << 20, BOOT_MEM_RAM);
add_memory_region(LOONGSON_HIGHMEM_START,
highmemsize << 20, BOOT_MEM_RAM);
#endif /* CONFIG_64BIT */
}
@ -27,10 +29,7 @@ int __uncached_access(struct file *file, unsigned long addr)
if (file->f_flags & O_SYNC)
return 1;
/*
* On the Lemote Loongson 2e system, the peripheral registers
* reside between 0x1000:0000 and 0x2000:0000.
*/
return addr >= __pa(high_memory) ||
((addr >= 0x10000000) && (addr < 0x20000000));
((addr >= LOONGSON_MMIO_MEM_START) &&
(addr < LOONGSON_MMIO_MEM_END));
}

24
arch/mips/loongson/fuloong-2e/pci.c → arch/mips/loongson/common/pci.c
View File

@ -12,24 +12,24 @@
#include <pci.h>
#include <loongson.h>
static struct resource loongson2e_pci_mem_resource = {
.name = "LOONGSON2E PCI MEM",
.start = LOONGSON2E_PCI_MEM_START,
.end = LOONGSON2E_PCI_MEM_END,
static struct resource loongson_pci_mem_resource = {
.name = "pci memory space",
.start = LOONGSON_PCI_MEM_START,
.end = LOONGSON_PCI_MEM_END,
.flags = IORESOURCE_MEM,
};
static struct resource loongson2e_pci_io_resource = {
.name = "LOONGSON2E PCI IO MEM",
.start = LOONGSON2E_PCI_IO_START,
static struct resource loongson_pci_io_resource = {
.name = "pci io space",
.start = LOONGSON_PCI_IO_START,
.end = IO_SPACE_LIMIT,
.flags = IORESOURCE_IO,
};
static struct pci_controller loongson2e_pci_controller = {
static struct pci_controller loongson_pci_controller = {
.pci_ops = &bonito64_pci_ops,
.io_resource = &loongson2e_pci_io_resource,
.mem_resource = &loongson2e_pci_mem_resource,
.io_resource = &loongson_pci_io_resource,
.mem_resource = &loongson_pci_mem_resource,
.mem_offset = 0x00000000UL,
.io_offset = 0x00000000UL,
};
@ -73,9 +73,9 @@ static int __init pcibios_init(void)
{
setup_pcimap();
loongson2e_pci_controller.io_map_base = mips_io_port_base;
loongson_pci_controller.io_map_base = mips_io_port_base;
register_pci_controller(&loongson2e_pci_controller);
register_pci_controller(&loongson_pci_controller);
return 0;
}

44
arch/mips/loongson/common/reset.c Normal file
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@ -0,0 +1,44 @@
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
* Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
* Author: Zhangjin Wu, wuzj@lemote.com
*/
#include <linux/init.h>
#include <linux/pm.h>
#include <asm/reboot.h>
#include <loongson.h>
static void loongson_restart(char *command)
{
/* do preparation for reboot */
mach_prepare_reboot();
/* reboot via jumping to boot base address */
((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
}
static void loongson_halt(void)
{
mach_prepare_shutdown();
while (1)
;
}
static int __init mips_reboot_setup(void)
{
_machine_restart = loongson_restart;
_machine_halt = loongson_halt;
pm_power_off = loongson_halt;
return 0;
}
arch_initcall(mips_reboot_setup);

58
arch/mips/loongson/common/setup.c Normal file
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@ -0,0 +1,58 @@
/*
* Copyright (C) 2007 Lemote Inc. & Insititute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/module.h>
#include <asm/wbflush.h>
#include <loongson.h>
#ifdef CONFIG_VT
#include <linux/console.h>
#include <linux/screen_info.h>
#endif
void (*__wbflush)(void);
EXPORT_SYMBOL(__wbflush);
static void wbflush_loongson(void)
{
asm(".set\tpush\n\t"
".set\tnoreorder\n\t"
".set mips3\n\t"
"sync\n\t"
"nop\n\t"
".set\tpop\n\t"
".set mips0\n\t");
}
void __init plat_mem_setup(void)
{
__wbflush = wbflush_loongson;
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
screen_info = (struct screen_info) {
0, 25, /* orig-x, orig-y */
0, /* unused */
0, /* orig-video-page */
0, /* orig-video-mode */
80, /* orig-video-cols */
0, 0, 0, /* ega_ax, ega_bx, ega_cx */
25, /* orig-video-lines */
VIDEO_TYPE_VGAC, /* orig-video-isVGA */
16 /* orig-video-points */
};
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
}

0
arch/mips/loongson/fuloong-2e/time.c → arch/mips/loongson/common/time.c
View File

8
arch/mips/loongson/fuloong-2e/Makefile
View File

@ -2,12 +2,6 @@
# Makefile for Lemote Fuloong2e mini-PC board.
#
obj-y += setup.o init.o reset.o irq.o pci.o bonito-irq.o mem.o \
env.o cmdline.o time.o machtype.o
#
# Early printk support
#
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-y += irq.o reset.o machtype.o
EXTRA_CFLAGS += -Werror

52
arch/mips/loongson/fuloong-2e/irq.c
View File

@ -7,39 +7,12 @@
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <asm/irq_cpu.h>
#include <asm/i8259.h>
#include <loongson.h>
/*
* the first level int-handler will jump here if it is a bonito irq
*/
static void bonito_irqdispatch(void)
{
u32 int_status;
int i;
/* workaround the IO dma problem: let cpu looping to allow DMA finish */
int_status = BONITO_INTISR;
if (int_status & (1 << 10)) {
while (int_status & (1 << 10)) {
udelay(1);
int_status = BONITO_INTISR;
}
}
/* Get pending sources, masked by current enables */
int_status = BONITO_INTISR & BONITO_INTEN;
if (int_status != 0) {
i = __ffs(int_status);
int_status &= ~(1 << i);
do_IRQ(BONITO_IRQ_BASE + i);
}
}
static void i8259_irqdispatch(void)
{
@ -52,10 +25,8 @@ static void i8259_irqdispatch(void)
spurious_interrupt();
}
asmlinkage void plat_irq_dispatch(void)
asmlinkage void mach_irq_dispatch(unsigned int pending)
{
unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
if (pending & CAUSEF_IP7)
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else if (pending & CAUSEF_IP6) /* perf counter loverflow */
@ -73,26 +44,15 @@ static struct irqaction cascade_irqaction = {
.name = "cascade",
};
void __init arch_init_irq(void)
void __init set_irq_trigger_mode(void)
{
/*
* Clear all of the interrupts while we change the able around a bit.
* int-handler is not on bootstrap
*/
clear_c0_status(ST0_IM | ST0_BEV);
local_irq_disable();
/* most bonito irq should be level triggered */
BONITO_INTEDGE = BONITO_ICU_SYSTEMERR | BONITO_ICU_MASTERERR |
BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
BONITO_INTSTEER = 0;
/*
* Mask out all interrupt by writing "1" to all bit position in
* the interrupt reset reg.
*/
BONITO_INTENCLR = ~0;
BONITO_ICU_RETRYERR | BONITO_ICU_MBOXES;
}
void __init mach_init_irq(void)
{
/* init all controller
* 0-15 ------> i8259 interrupt
* 16-23 ------> mips cpu interrupt

37
arch/mips/loongson/fuloong-2e/reset.c
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@ -1,44 +1,23 @@
/*
/* Board-specific reboot/shutdown routines
* Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca>
*
* Copyright (C) 2009 Lemote Inc. & Insititute of Computing Technology
* Author: Wu Zhangjin, wuzj@lemote.com
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
* Author: Fuxin Zhang, zhangfx@lemote.com
* Copyright (C) 2009 Lemote, Inc. & Institute of Computing Technology
* Author: Zhangjin Wu, wuzj@lemote.com
*/
#include <linux/init.h>
#include <linux/pm.h>
#include <asm/reboot.h>
#include <loongson.h>
static void loongson2e_restart(char *command)
void mach_prepare_reboot(void)
{
/* do preparation for reboot */
BONITO_BONGENCFG &= ~(1 << 2);
BONITO_BONGENCFG |= (1 << 2);
/* reboot via jumping to boot base address */
((void (*)(void))ioremap_nocache(BONITO_BOOT_BASE, 4)) ();
}
static void loongson2e_halt(void)
void mach_prepare_shutdown(void)
{
while (1)
;
}
static int __init mips_reboot_setup(void)
{
_machine_restart = loongson2e_restart;
_machine_halt = loongson2e_halt;
pm_power_off = loongson2e_halt;
return 0;
}
arch_initcall(mips_reboot_setup);