1 #ifndef _PPC64_KDUMP_H 2 #define _PPC64_KDUMP_H 3 4 /* Kdump kernel runs at 32 MB, change at your peril. */ 5 #define KDUMP_KERNELBASE 0x2000000 6 7 /* How many bytes to reserve at zero for kdump. The reserve limit should 8 * be greater or equal to the trampoline's end address. 9 * Reserve to the end of the FWNMI area, see head_64.S */ 10 #define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */ 11 12 /* 13 * Used to differentiate between relocatable kdump kernel and other 14 * kernels 15 */ 16 #define KDUMP_SIGNATURE 0xfeed1234 17 18 #ifdef CONFIG_CRASH_DUMP 19 20 #define KDUMP_TRAMPOLINE_START 0x0100 21 #define KDUMP_TRAMPOLINE_END 0x3000 22 23 #define KDUMP_MIN_TCE_ENTRIES 2048 24 25 #endif /* CONFIG_CRASH_DUMP */ 26 27 #ifndef __ASSEMBLY__ 28 29 extern unsigned long __kdump_flag; 30 31 #if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE) 32 extern void reserve_kdump_trampoline(void); 33 extern void setup_kdump_trampoline(void); 34 #else 35 /* !CRASH_DUMP || RELOCATABLE */ 36 static inline void reserve_kdump_trampoline(void) { ; } 37 static inline void setup_kdump_trampoline(void) { ; } 38 #endif 39 40 #endif /* __ASSEMBLY__ */ 41 42 #endif /* __PPC64_KDUMP_H */ 43