arch/mips/include/asm/kexec.h

   1 /*
   2  * kexec.h for kexec
   3  * Created by <nschichan@corp.free.fr> on Thu Oct 12 14:59:34 2006
   4  *
   5  * This source code is licensed under the GNU General Public License,
   6  * Version 2.  See the file COPYING for more details.
   7  */
   8
   9 #ifndef _MIPS_KEXEC
  10 # define _MIPS_KEXEC
  11
  12 #include <asm/stacktrace.h>
  13
  14 /* Maximum physical address we can use pages from */
  15 #define KEXEC_SOURCE_MEMORY_LIMIT (0x20000000)
  16 /* Maximum address we can reach in physical address mode */
  17 #define KEXEC_DESTINATION_MEMORY_LIMIT (0x20000000)
  18  /* Maximum address we can use for the control code buffer */
  19 #define KEXEC_CONTROL_MEMORY_LIMIT (0x20000000)
  20 /* Reserve 3*4096 bytes for board-specific info */
  21 #define KEXEC_CONTROL_PAGE_SIZE (4096 + 3*4096)
  22
  23 /* The native architecture */
  24 #define KEXEC_ARCH KEXEC_ARCH_MIPS
  25 #define MAX_NOTE_BYTES 1024
  26
  27 static inline void crash_setup_regs(struct pt_regs *newregs,
  28                                     struct pt_regs *oldregs)
  29 {
  30         if (oldregs)
  31                 memcpy(newregs, oldregs, sizeof(*newregs));
  32         else
  33                 prepare_frametrace(newregs);
  34 }
  35
  36 #ifdef CONFIG_KEXEC
  37 struct kimage;
  38 extern unsigned long kexec_args[4];
  39 extern int (*_machine_kexec_prepare)(struct kimage *);
  40 extern void (*_machine_kexec_shutdown)(void);
  41 extern void (*_machine_crash_shutdown)(struct pt_regs *regs);
  42 extern void default_machine_crash_shutdown(struct pt_regs *regs);
  43 #ifdef CONFIG_SMP
  44 extern const unsigned char kexec_smp_wait[];
  45 extern unsigned long secondary_kexec_args[4];
  46 extern void (*relocated_kexec_smp_wait) (void *);
  47 extern atomic_t kexec_ready_to_reboot;
  48 #endif
  49 #endif
  50
  51 #endif /* !_MIPS_KEXEC */