| #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 |
| |
| /* How many bytes to reserve at zero for kdump. The reserve limit should |
| * be greater or equal to the trampoline's end address. |
| * Reserve to the end of the FWNMI area, see head_64.S */ |
| #define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */ |
| |
| #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__ |
| |
| #if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE) |
| extern void reserve_kdump_trampoline(void); |
| extern void setup_kdump_trampoline(void); |
| #else |
| /* !CRASH_DUMP || RELOCATABLE */ |
| static inline void reserve_kdump_trampoline(void) { ; } |
| static inline void setup_kdump_trampoline(void) { ; } |
| #endif |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif /* __PPC64_KDUMP_H */ |
