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review.evervolv.com / android_kernel_htc_msm8960 / 54622f10a6aabb8bb2bdacf3dd070046f03dc246 / . / arch / powerpc / include / asm / kdump.h
blob: a503da9d56f38712786a6757fb223dfaf9c70b1b [file] [log] [blame]
Michael Ellerman0cc47462005-12-04 18:39:37 +1100[diff] [blame]1#ifndef _PPC64_KDUMP_H
2#define _PPC64_KDUMP_H
3
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]4/* Kdump kernel runs at 32 MB, change at your peril. */
5#define KDUMP_KERNELBASE 0x2000000
6
Michael Ellerman0cc47462005-12-04 18:39:37 +1100[diff] [blame]7/* How many bytes to reserve at zero for kdump. The reserve limit should
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]8 * be greater or equal to the trampoline's end address.
9 * Reserve to the end of the FWNMI area, see head_64.S */
Sachin P. Sante269d262006-09-08 07:59:52 +0530[diff] [blame]10#define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */
Michael Ellerman0cc47462005-12-04 18:39:37 +1100[diff] [blame]11
Mohan Kumar M54622f12008-10-21 17:38:10 +0000[diff] [blame^]12/*
13 * Used to differentiate between relocatable kdump kernel and other
14 * kernels
15 */
16#define KDUMP_SIGNATURE 0xfeed1234
17
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]18#ifdef CONFIG_CRASH_DUMP
19
Michael Ellerman0cc47462005-12-04 18:39:37 +1100[diff] [blame]20#define KDUMP_TRAMPOLINE_START 0x0100
21#define KDUMP_TRAMPOLINE_END 0x3000
22
Haren Myneni5f508672006-06-22 23:35:10 -0700[diff] [blame]23#define KDUMP_MIN_TCE_ENTRIES 2048
24
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]25#endif /* CONFIG_CRASH_DUMP */
26
27#ifndef __ASSEMBLY__
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]28
Mohan Kumar M54622f12008-10-21 17:38:10 +0000[diff] [blame^]29extern unsigned long __kdump_flag;
30
31#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]32extern void reserve_kdump_trampoline(void);
33extern void setup_kdump_trampoline(void);
Mohan Kumar M54622f12008-10-21 17:38:10 +0000[diff] [blame^]34#else
35/* !CRASH_DUMP || RELOCATABLE */
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]36static inline void reserve_kdump_trampoline(void) { ; }
37static inline void setup_kdump_trampoline(void) { ; }
Mohan Kumar M54622f12008-10-21 17:38:10 +0000[diff] [blame^]38#endif
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]39
Michael Ellerman47310412006-05-17 18:00:49 +1000[diff] [blame]40#endif /* __ASSEMBLY__ */
Michael Ellerman0cc47462005-12-04 18:39:37 +1100[diff] [blame]41
42#endif /* __PPC64_KDUMP_H */