arch/powerpc/include/asm/kdump.h

   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 #ifdef CONFIG_CRASH_DUMP
  13
  14 #define KDUMP_TRAMPOLINE_START  0x0100
  15 #define KDUMP_TRAMPOLINE_END    0x3000
  16
  17 #define KDUMP_MIN_TCE_ENTRIES   2048
  18
  19 #endif /* CONFIG_CRASH_DUMP */
  20
  21 #ifndef __ASSEMBLY__
  22
  23 #if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
  24 extern void reserve_kdump_trampoline(void);
  25 extern void setup_kdump_trampoline(void);
  26 #else
  27 /* !CRASH_DUMP || RELOCATABLE */
  28 static inline void reserve_kdump_trampoline(void) { ; }
  29 static inline void setup_kdump_trampoline(void) { ; }
  30 #endif
  31
  32 #endif /* __ASSEMBLY__ */
  33
  34 #endif /* __PPC64_KDUMP_H */