include/asm-powerpc/kexec.h

   1 #ifndef _ASM_POWERPC_KEXEC_H
   2 #define _ASM_POWERPC_KEXEC_H
   3 #ifdef __KERNEL__
   4
   5 /*
   6  * Maximum page that is mapped directly into kernel memory.
   7  * XXX: Since we copy virt we can use any page we allocate
   8  */
   9 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  10
  11 /*
  12  * Maximum address we can reach in physical address mode.
  13  * XXX: I want to allow initrd in highmem. Otherwise set to rmo on LPAR.
  14  */
  15 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  16
  17 /* Maximum address we can use for the control code buffer */
  18 #ifdef __powerpc64__
  19 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
  20 #else
  21 /* TASK_SIZE, probably left over from use_mm ?? */
  22 #define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
  23 #endif
  24
  25 #define KEXEC_CONTROL_CODE_SIZE 4096
  26
  27 /* The native architecture */
  28 #ifdef __powerpc64__
  29 #define KEXEC_ARCH KEXEC_ARCH_PPC64
  30 #else
  31 #define KEXEC_ARCH KEXEC_ARCH_PPC
  32 #endif
  33
  34 #define HAVE_ARCH_COPY_OLDMEM_PAGE
  35
  36 #ifndef __ASSEMBLY__
  37
  38 #ifdef CONFIG_KEXEC
  39
  40 #define MAX_NOTE_BYTES 1024
  41
  42 #ifdef __powerpc64__
  43 extern void kexec_smp_wait(void);       /* get and clear naca physid, wait for
  44                                           master to copy new code to 0 */
  45 extern void __init kexec_setup(void);
  46 extern int crashing_cpu;
  47 extern void crash_send_ipi(void (*crash_ipi_callback)(struct pt_regs *));
  48 #endif /* __powerpc64 __ */
  49
  50 struct kimage;
  51 struct pt_regs;
  52 extern void default_machine_kexec(struct kimage *image);
  53 extern int default_machine_kexec_prepare(struct kimage *image);
  54 extern void default_machine_crash_shutdown(struct pt_regs *regs);
  55
  56 #endif /* !CONFIG_KEXEC */
  57
  58 #endif /* ! __ASSEMBLY__ */
  59 #endif /* __KERNEL__ */
  60 #endif /* _ASM_POWERPC_KEXEC_H */