include/asm-powerpc/kexec.h

   1 #ifndef _ASM_POWERPC_KEXEC_H
   2 #define _ASM_POWERPC_KEXEC_H
   3
   4 /*
   5  * Maximum page that is mapped directly into kernel memory.
   6  * XXX: Since we copy virt we can use any page we allocate
   7  */
   8 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
   9
  10 /*
  11  * Maximum address we can reach in physical address mode.
  12  * XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
  13  */
  14 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  15
  16 /* Maximum address we can use for the control code buffer */
  17 #ifdef __powerpc64__
  18 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
  19 #else
  20 /* TASK_SIZE, probably left over from use_mm ?? */
  21 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
  22 #endif
  23
  24 #define KEXEC_CONTROL_CODE_SIZE 4096
  25
  26 /* The native architecture */
  27 #ifdef __powerpc64__
  28 #define KEXEC_ARCH KEXEC_ARCH_PPC64
  29 #else
  30 #define KEXEC_ARCH KEXEC_ARCH_PPC
  31 #endif
  32
  33 #ifndef __ASSEMBLY__
  34
  35 #define MAX_NOTE_BYTES 1024
  36 typedef u32 note_buf_t[MAX_NOTE_BYTES / sizeof(u32)];
  37
  38 extern note_buf_t crash_notes[];
  39
  40 #ifdef __powerpc64__
  41 extern void kexec_smp_wait(void);       /* get and clear naca physid, wait for
  42                                           master to copy new code to 0 */
  43 #else
  44 struct kimage;
  45 extern void machine_kexec_simple(struct kimage *image);
  46 #endif
  47
  48 #endif /* ! __ASSEMBLY__ */
  49 #endif /* _ASM_POWERPC_KEXEC_H */