diff options
Diffstat (limited to 'arch/powerpc/include/asm/kdump.h')
| -rw-r--r-- | arch/powerpc/include/asm/kdump.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h index f6c93c71689..5ebfe5d3c61 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 @@ -11,25 +13,35 @@ #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 #endif /* CONFIG_CRASH_DUMP */ #ifndef __ASSEMBLY__ -#ifdef CONFIG_CRASH_DUMP +#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE) extern void reserve_kdump_trampoline(void); extern void setup_kdump_trampoline(void); - -#else /* !CONFIG_CRASH_DUMP */ - +#else +/* !CRASH_DUMP || RELOCATABLE */ static inline void reserve_kdump_trampoline(void) { ; } static inline void setup_kdump_trampoline(void) { ; } +#endif -#endif /* CONFIG_CRASH_DUMP */ #endif /* __ASSEMBLY__ */ #endif /* __PPC64_KDUMP_H */ |