diff options
| author | Dale Farnsworth <dale@farnsworth.org> | 2008-12-17 11:09:26 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-12-23 05:13:29 +0100 |
| commit | f8f50b1bddd49eb171398cfc543c957884dc6e35 (patch) | |
| tree | 0813d5bf36740e6a294e9b07be6d1d8d2cac60df /arch/powerpc/include/asm/kdump.h | |
| parent | powerpc/32: Add the ability for a classic ppc kernel to be loaded at 32M (diff) | |
| download | linux-f8f50b1bddd49eb171398cfc543c957884dc6e35.tar.xz linux-f8f50b1bddd49eb171398cfc543c957884dc6e35.zip | |
powerpc/32: Wire up the trampoline code for kdump
Wire up the trampoline code for ppc32 to relay exceptions from the
vectors at address 0 to vectors at address 32MB, and modify Kconfig
to enable Kdump support for all classic powerpcs.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/include/asm/kdump.h')
| -rw-r--r-- | arch/powerpc/include/asm/kdump.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h index b07ebb9784d3..5ebfe5d3c61f 100644 --- a/arch/powerpc/include/asm/kdump.h +++ b/arch/powerpc/include/asm/kdump.h @@ -1,6 +1,8 @@ #ifndef _PPC64_KDUMP_H #define _PPC64_KDUMP_H +#include <asm/page.h> + /* Kdump kernel runs at 32 MB, change at your peril. */ #define KDUMP_KERNELBASE 0x2000000 @@ -11,8 +13,19 @@ #ifdef CONFIG_CRASH_DUMP +/* + * On PPC64 translation is disabled during trampoline setup, so we use + * physical addresses. Though on PPC32 translation is already enabled, + * so we can't do the same. Luckily create_trampoline() creates relative + * branches, so we can just add the PAGE_OFFSET and don't worry about it. + */ +#ifdef __powerpc64__ #define KDUMP_TRAMPOLINE_START 0x0100 #define KDUMP_TRAMPOLINE_END 0x3000 +#else +#define KDUMP_TRAMPOLINE_START (0x0100 + PAGE_OFFSET) +#define KDUMP_TRAMPOLINE_END (0x3000 + PAGE_OFFSET) +#endif /* __powerpc64__ */ #define KDUMP_MIN_TCE_ENTRIES 2048 |