arch/mips/include/asm/kexec.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * kexec.h for kexec
   4  * Created by <nschichan@corp.free.fr> on Thu Oct 12 14:59:34 2006
   5  */
   6
   7 #ifndef _MIPS_KEXEC
   8 # define _MIPS_KEXEC
   9
  10 #include <asm/stacktrace.h>
  11
  12 /* Maximum physical address we can use pages from */
  13 #define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
  14 /* Maximum address we can reach in physical address mode */
  15 #define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
  16  /* Maximum address we can use for the control code buffer */
  17 #define KEXEC_CONTROL_MEMORY_LIMIT (-1UL)
  18 /* Reserve 3*4096 bytes for board-specific info */
  19 #define KEXEC_CONTROL_PAGE_SIZE (4096 + 3*4096)
  20
  21 /* The native architecture */
  22 #define KEXEC_ARCH KEXEC_ARCH_MIPS
  23 #define MAX_NOTE_BYTES 1024
  24
  25 static inline void crash_setup_regs(struct pt_regs *newregs,
  26                                     struct pt_regs *oldregs)
  27 {
  28         if (oldregs)
  29                 memcpy(newregs, oldregs, sizeof(*newregs));
  30         else
  31                 prepare_frametrace(newregs);
  32 }
  33
  34 #ifdef CONFIG_KEXEC
  35 struct kimage;
  36 extern unsigned long kexec_args[4];
  37 extern int (*_machine_kexec_prepare)(struct kimage *);
  38 extern void (*_machine_kexec_shutdown)(void);
  39 extern void (*_machine_crash_shutdown)(struct pt_regs *regs);
  40 void default_machine_crash_shutdown(struct pt_regs *regs);
  41 void kexec_nonboot_cpu_jump(void);
  42 void kexec_reboot(void);
  43 #ifdef CONFIG_SMP
  44 extern const unsigned char kexec_smp_wait[];
  45 extern unsigned long secondary_kexec_args[4];
  46 extern atomic_t kexec_ready_to_reboot;
  47 extern void (*_crash_smp_send_stop)(void);
  48 #endif
  49 #endif
  50
  51 #endif /* !_MIPS_KEXEC */