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alistair23-linux/arch/arm/kernel
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Nicolas Pitre 3572bea8cb ARM: 6748/1: ignore mdesc->boot_params if out of range 
The initial MMU table created in head.S contains a 1 MB mapping at the
start of memory to let the early kernel boot code access the boot params
specified by mdesc->boot_params.

When using CONFIG_ARM_PATCH_PHYS_VIRT it is possible for the kernel to
have a different idea of where the start of memory is at run time, making
the compile-time determined mdesc->boot_params pointing to a memory area
which is not mapped.  Any access to the boot params in that case will
fault and silently hang the kernel at that point.  It is therefore a
better idea to simply ignore mdesc->boot_params in that case and give
the kernel a chance to print some diagnostic on the console later.

If the bootloader provides a valid pointer in r2 to the kernel then this
is used instead of mdesc->boot_params, and an explicit mapping is already
created in the initial MMU table for it.  It is therefore a good idea to
use that facility when using a relocated kernel.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-23 16:14:25 +00:00
..
.gitignore
armksyms.c ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching 2011-02-17 23:27:32 +00:00
arthur.c
asm-offsets.c arm: remove machine_desc.io_pg_offst and .phys_io 2010-10-20 00:27:46 -04:00
atags.c
atags.h
bios32.c
calls.S ARM: 6343/1: wire up fanotify and prlimit64 syscalls on ARM 2010-09-01 10:06:08 +01:00
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 ARM: 6120/1: kdump: implement copy_oldmem_page() 2010-07-09 15:00:53 +01:00
crunch-bits.S
crunch.c
debug.S arm: return both physical and virtual addresses from addruart 2010-10-20 00:27:33 -04:00
dma-isa.c
dma.c
early_printk.c
ecard.c ARM: ecard: irq_data conversion. 2011-01-13 12:26:17 +01:00
ecard.h
elf.c
entry-armv.S Merge branch 'devel-stable' into devel 2011-01-06 22:33:32 +00:00
entry-common.S Merge branch 'clksrc' into devel 2011-01-05 18:09:03 +00:00
entry-header.S ARM: hw_breakpoint: disable preemption during debug exception handling 2010-12-06 11:55:56 +00:00
etm.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
fiq.c Merge branch 'smp' into misc 2011-01-06 22:32:03 +00:00
ftrace.c ARM: ftrace: graph tracer + dynamic ftrace 2010-11-19 21:43:27 +05:30
head-common.S ARM: Defer lookup of machine_type to setup.c 2011-02-15 16:36:44 +00:00
head-nommu.S ARM: Defer lookup of machine_type to setup.c 2011-02-15 16:36:44 +00:00
head.S ARM: 6648/1: map ATAGs when not in first 1MB of RAM 2011-02-17 23:27:33 +00:00
hw_breakpoint.c ARM: hw_breakpoint: do not fail initcall if monitor mode is disabled 2010-12-15 12:31:03 +00:00
init_task.c
io.c
irq.c ARM: core irq_data conversion. 2011-01-13 12:26:17 +01:00
isa.c
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: 6412/1: kprobes-decode: add support for MOVW instruction 2010-10-04 19:21:37 +01:00
kprobes.c
leds.c
machine_kexec.c ARM: 6522/1: kexec: Add call to non-crashing cores through IPI 2010-12-04 11:02:04 +00:00
Makefile Merge branch 'devel-stable' into devel 2011-01-06 22:33:32 +00:00
module.c ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching 2011-02-17 23:27:32 +00:00
perf_event.c Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2011-01-06 16:50:35 -08:00
perf_event_v6.c ARM: 6521/1: perf: use raw_spinlock_t for pmu_lock 2010-12-04 11:18:08 +00:00
perf_event_v7.c ARM: 6521/1: perf: use raw_spinlock_t for pmu_lock 2010-12-04 11:18:08 +00:00
perf_event_xscale.c ARM: 6521/1: perf: use raw_spinlock_t for pmu_lock 2010-12-04 11:18:08 +00:00
pj4-cp0.c ARM: pxa: add iwmmx support for PJ4 2010-12-20 23:07:36 +08:00
pmu.c ARM: 6064/1: pmu: register IRQs at runtime 2010-05-17 11:53:57 +01:00
process.c ARM: 6619/1: nommu: avoid mapping vectors page when !CONFIG_MMU 2011-01-11 17:32:24 +00:00
ptrace.c ARM: ptrace: fix style issue with hw_breakpoint interface 2010-12-06 11:55:57 +00:00
ptrace.h
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
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 ARM: 6748/1: ignore mdesc->boot_params if out of range 2011-02-23 16:14:25 +00:00
signal.c
signal.h
smp.c Merge branch 'pgt' (early part) into devel 2011-01-06 22:33:19 +00:00
smp_scu.c
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
stacktrace.c ARM: fix /proc/$PID/stack on SMP 2011-01-15 09:27:04 +00:00
swp_emulate.c ARM: 6396/1: Add SWP/SWPB emulation for ARMv7 processors 2010-11-04 15:45:24 +00:00
sys_arm.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
sys_oabi-compat.c Mark arguments to certain syscalls as being const 2010-08-13 16:53:13 -07:00
tcm.c ARM: P2V: separate PHYS_OFFSET from platform definitions 2011-02-17 23:26:55 +00:00
tcm.h
thumbee.c
time.c ARM: sched_clock: allow init_sched_clock() to be called early 2011-01-11 16:23:04 +00:00
traps.c Merge branch 'pgt' (early part) into devel 2011-01-06 22:33:19 +00:00
unwind.c ARM: 6468/1: backtrace: fix calculation of thread stack base 2010-11-07 16:12:37 +00:00
vmlinux.lds.S ARM: P2V: introduce phys_to_virt/virt_to_phys runtime patching 2011-02-17 23:27:32 +00:00
xscale-cp0.c