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0cc4746c ME |
1 | #ifndef _PPC64_KDUMP_H |
2 | #define _PPC64_KDUMP_H | |
3 | ||
f8f50b1b DF |
4 | #include <asm/page.h> |
5 | ||
47310413 ME |
6 | /* Kdump kernel runs at 32 MB, change at your peril. */ |
7 | #define KDUMP_KERNELBASE 0x2000000 | |
8 | ||
0cc4746c | 9 | /* How many bytes to reserve at zero for kdump. The reserve limit should |
47310413 ME |
10 | * be greater or equal to the trampoline's end address. |
11 | * Reserve to the end of the FWNMI area, see head_64.S */ | |
e269d269 | 12 | #define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */ |
0cc4746c | 13 | |
47310413 ME |
14 | #ifdef CONFIG_CRASH_DUMP |
15 | ||
f8f50b1b DF |
16 | /* |
17 | * On PPC64 translation is disabled during trampoline setup, so we use | |
18 | * physical addresses. Though on PPC32 translation is already enabled, | |
19 | * so we can't do the same. Luckily create_trampoline() creates relative | |
20 | * branches, so we can just add the PAGE_OFFSET and don't worry about it. | |
21 | */ | |
22 | #ifdef __powerpc64__ | |
0cc4746c ME |
23 | #define KDUMP_TRAMPOLINE_START 0x0100 |
24 | #define KDUMP_TRAMPOLINE_END 0x3000 | |
f8f50b1b DF |
25 | #else |
26 | #define KDUMP_TRAMPOLINE_START (0x0100 + PAGE_OFFSET) | |
27 | #define KDUMP_TRAMPOLINE_END (0x3000 + PAGE_OFFSET) | |
28 | #endif /* __powerpc64__ */ | |
0cc4746c | 29 | |
5f50867b HM |
30 | #define KDUMP_MIN_TCE_ENTRIES 2048 |
31 | ||
47310413 ME |
32 | #endif /* CONFIG_CRASH_DUMP */ |
33 | ||
34 | #ifndef __ASSEMBLY__ | |
47310413 | 35 | |
54622f10 | 36 | #if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE) |
47310413 ME |
37 | extern void reserve_kdump_trampoline(void); |
38 | extern void setup_kdump_trampoline(void); | |
54622f10 MK |
39 | #else |
40 | /* !CRASH_DUMP || RELOCATABLE */ | |
47310413 ME |
41 | static inline void reserve_kdump_trampoline(void) { ; } |
42 | static inline void setup_kdump_trampoline(void) { ; } | |
54622f10 | 43 | #endif |
47310413 | 44 | |
47310413 | 45 | #endif /* __ASSEMBLY__ */ |
0cc4746c ME |
46 | |
47 | #endif /* __PPC64_KDUMP_H */ |