include/asm-powerpc/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 PHYSICAL_START  KDUMP_KERNELBASE
  15 #define KDUMP_TRAMPOLINE_START  0x0100
  16 #define KDUMP_TRAMPOLINE_END    0x3000
  17
  18 #define KDUMP_MIN_TCE_ENTRIES   2048
  19
  20 #else /* !CONFIG_CRASH_DUMP */
  21
  22 #define PHYSICAL_START  0x0
  23
  24 #endif /* CONFIG_CRASH_DUMP */
  25
  26 #ifndef __ASSEMBLY__
  27 #ifdef CONFIG_CRASH_DUMP
  28
  29 extern void reserve_kdump_trampoline(void);
  30 extern void setup_kdump_trampoline(void);
  31
  32 #else /* !CONFIG_CRASH_DUMP */
  33
  34 static inline void reserve_kdump_trampoline(void) { ; }
  35 static inline void setup_kdump_trampoline(void) { ; }
  36
  37 #endif /* CONFIG_CRASH_DUMP */
  38 #endif /* __ASSEMBLY__ */
  39
  40 #endif /* __PPC64_KDUMP_H */