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540b573875
linux/arch/arm/kernel
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Dave Martin 540b573875 ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state 
Currently, the documented kernel entry requirements are not
explicit about whether the kernel should be entered in ARM or
Thumb, leading to an ambiguitity about how to enter Thumb-2
kernels.  As a result, the kernel is reliant on the zImage
decompressor to enter the kernel proper in the correct instruction
set state.

This patch changes the boot entry protocol for head.S and Image to
be the same as for zImage: in all cases, the kernel is now entered
in ARM.

Documentation/arm/Booting is updated to reflect this new policy.

A different rule will be needed for Cortex-M class CPUs as and when
support for those lands in mainline, since these CPUs don't support
the ARM instruction set at all: a note is added to the effect that
the kernel must be entered in Thumb on such systems.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-19 12:00:53 +01:00
..
.gitignore
armksyms.c Merge branch 'p2v' into devel 2011-03-16 23:35:27 +00:00
arthur.c
asm-offsets.c ARM: pm: add generic CPU suspend/resume support 2011-02-22 17:11:23 +00:00
atags.c
atags.h
bios32.c arm: bios32: Remove non exisiting machine code 2011-03-29 14:47:50 +02:00
calls.S Merge branch 'setns' 2011-05-28 10:51:01 -07:00
compat.c ARM: deprecate support for old way to pass kernel parameters 2010-07-07 16:38:36 +02:00
compat.h ARM: deprecate support for old way to pass kernel parameters 2010-07-07 16:38:36 +02:00
crash_dump.c crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn 2011-03-23 19:47:19 -07:00
crunch-bits.S
crunch.c ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread() 2009-12-18 14:53:41 +00:00
debug.S ARM: 6826/1: Merge v6 and v7 DEBUG_LL DCC support 2011-03-28 19:01:43 +01:00
devtree.c arm/dt: probe for platforms via the device tree 2011-05-23 09:30:20 -06:00
dma-isa.c ARM: dma-isa: request cascade channel after registering it 2009-12-24 18:34:08 +00:00
dma.c ARM: dma: add /proc/dma support to arch/arm/kernel/dma.c 2010-04-14 13:13:30 +01:00
early_printk.c ARM: Add an earlyprintk debug console 2009-12-09 10:02:18 +00:00
ecard.c arm: Fold irq_set_chip/irq_set_handler 2011-03-29 14:47:58 +02:00
ecard.h
elf.c ARM: 6878/1: fix personality flag propagation across an exec 2011-04-14 09:15:24 +01:00
entry-armv.S ARM: move cache/processor/fault glue to separate include files 2011-02-12 11:52:21 +00:00
entry-common.S Merge branch 'clksrc' into devel 2011-01-05 18:09:03 +00:00
entry-header.S ARM: v6k: select clear exclusive code seqences according to V6 variants 2011-02-02 21:23:28 +00:00
etm.c ARM: 6838/1: etm: fix section mismatch warning 2011-03-28 19:01:17 +01:00
fiq.c ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2 2011-05-26 10:31:06 +01:00
fiqasm.S ARM: 6938/1: fiq: Refactor {get,set}_fiq_regs() for Thumb-2 2011-05-26 10:31:06 +01:00
ftrace.c ARM: ftrace: graph tracer + dynamic ftrace 2010-11-19 21:43:27 +05:30
head-common.S arm/dt: Make __vet_atags also accept a dtb image 2011-05-11 15:12:32 +02:00
head-nommu.S ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state 2011-07-19 12:00:53 +01:00
head.S ARM: 6999/1: head, zImage: Always Enter the kernel in ARM state 2011-07-19 12:00:53 +01:00
hw_breakpoint.c ARM: 6864/1: hw_breakpoint: clear DBGVCR out of reset 2011-04-10 21:13:35 +01:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
io.c
irq.c arm: Use generic show_interrupts() 2011-03-29 14:47:57 +02:00
isa.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
iwmmxt.S ARM: pxa: add iwmmx support for PJ4 2010-12-20 23:07:36 +08:00
kgdb.c kgdb,arm: fix register dump 2010-10-29 13:14:40 -05:00
kprobes-decode.c ARM: kprobes: Tidy-up kprobes-decode.c 2011-04-28 23:41:01 -04:00
kprobes.c ARM: kprobes: Fix probing of conditionally executed instructions 2011-04-28 23:40:54 -04:00
leds.c ARM: Use struct syscore_ops instead of sysdevs for PM in common code 2011-04-24 19:16:08 +02:00
machine_kexec.c [ARM] add machine-specific hook to machine_kexec 2011-03-03 16:26:55 -05:00
Makefile Merge branches 'devel', 'devel-stable' and 'fixes' into for-linus 2011-05-27 22:59:57 +01:00
module.c Merge branch 'p2v' into devel 2011-03-16 23:35:27 +00:00
perf_event_v6.c ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency 2011-03-26 10:06:09 +00:00
perf_event_v7.c ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency 2011-03-26 10:06:09 +00:00
perf_event_xscale.c ARM: 6835/1: perf: ensure overflows aren't missed due to IRQ latency 2011-03-26 10:06:09 +00:00
perf_event.c ARM: 6974/1: pmu: refactor reservation 2011-06-29 10:27:08 +01:00
pj4-cp0.c ARM: pxa: add iwmmx support for PJ4 2010-12-20 23:07:36 +08:00
pmu.c ARM: 6977/1: pmu: add platform_device_id table support 2011-06-29 10:27:09 +01:00
process.c ARM: 6867/1: Introduce THREAD_NOTIFY_COPY for copy_thread() hooks 2011-04-10 21:13:36 +01:00
ptrace.c ARM: 6883/1: ptrace: Migrate to regsets framework 2011-05-14 21:36:55 +01:00
relocate_kernel.S ARM: 6497/1: kexec: Correct data alignment for CONFIG_THUMB2_KERNEL 2010-11-30 13:44:23 +00:00
return_address.c ARM: fix some sparse errors in generic ARM code 2011-02-23 17:24:12 +00:00
sched_clock.c ARM: sched_clock: make minsec argument to clocks_calc_mult_shift() zero 2011-01-11 16:44:02 +00:00
setup.c Merge branch 'devicetree/arm-next' of git://git.secretlab.ca/git/linux-2.6 into devel-stable 2011-05-25 00:08:17 +01:00
signal.c ARM: 6892/1: handle ptrace requests to change PC during interrupted system calls 2011-05-12 10:52:00 +01:00
signal.h ARM: Fix signal restart issues with NX and OABI compat 2009-10-25 15:39:37 +00:00
sleep.S ARM: 6825/1: kernel/sleep.S: fix Thumb2 compilation issues 2011-03-26 10:06:08 +00:00
smp_scu.c ARM: 6960/1: allow enabling SCU code on UP 2011-07-06 20:55:15 +01:00
smp_tlb.c ARM: SMP: split out software TLB maintainence broadcasting 2010-12-20 15:09:17 +00:00
smp_twd.c ARM: twd: ensure timer reload is reprogrammed on entry to periodic mode 2011-01-25 21:17:58 +00:00
smp.c ARM: 6993/1: platsmp: Allow secondary cpu hotplug with maxcpus=1 2011-07-07 14:45:07 +01:00
stacktrace.c ARM: fix /proc/$PID/stack on SMP 2011-01-15 09:27:04 +00:00
swp_emulate.c Fix common misspellings 2011-03-31 11:26:23 -03:00
sys_arm.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
sys_oabi-compat.c ARM: 6891/1: prevent heap corruption in OABI semtimedop 2011-04-29 15:53:14 +01:00
tcm.c ARM: 6985/1: export functions to determine the presence of I/DTCM 2011-07-06 20:49:45 +01:00
tcm.h ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3 2009-09-15 22:11:05 +01:00
thumbee.c
time.c ARM: Use struct syscore_ops instead of sysdevs for PM in common code 2011-04-24 19:16:08 +02:00
traps.c sysfs: remove "last sysfs file:" line from the oops messages 2011-05-13 16:05:51 -07:00
unwind.c ARM: 6468/1: backtrace: fix calculation of thread stack base 2010-11-07 16:12:37 +00:00
vmlinux.lds.S percpu: Always align percpu output section to PAGE_SIZE 2011-03-24 18:50:09 +01:00
xscale-cp0.c ARM: Convert VFP/Crunch/XscaleCP thread_release() to exit_thread() 2009-12-18 14:53:41 +00:00