include/asm-ppc64/kexec.h

   1 #ifndef _PPC64_KEXEC_H
   2 #define _PPC64_KEXEC_H
   3
   4 /*
   5  * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
   6  * I.e. Maximum page that is mapped directly into kernel memory,
   7  * and kmap is not required.
   8  */
   9
  10 /* Maximum physical address we can use pages from */
  11 /* XXX: since we copy virt we can use any page we allocate */
  12 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  13
  14 /* Maximum address we can reach in physical address mode */
  15 /* XXX: I want to allow initrd in highmem.  otherwise set to rmo on lpar */
  16 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  17
  18 /* Maximum address we can use for the control code buffer */
  19 /* XXX: unused today, ppc32 uses TASK_SIZE, probably left over from use_mm  */
  20 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
  21
  22 /* XXX: today we don't use this at all, althogh we have a static stack */
  23 #define KEXEC_CONTROL_CODE_SIZE 4096
  24
  25 /* The native architecture */
  26 #define KEXEC_ARCH KEXEC_ARCH_PPC64
  27
  28 #define MAX_NOTE_BYTES 1024
  29
  30 #ifndef __ASSEMBLY__
  31
  32 typedef u32 note_buf_t[MAX_NOTE_BYTES/4];
  33
  34 extern note_buf_t crash_notes[];
  35
  36 extern void kexec_smp_wait(void);       /* get and clear naca physid, wait for
  37                                           master to copy new code to 0 */
  38
  39 #endif /* __ASSEMBLY__ */
  40 #endif /* _PPC_KEXEC_H */
  41