LXR linux/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
  25static 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
  35struct kimage;
  36extern unsigned long kexec_args[4];
  37extern int (*_machine_kexec_prepare)(struct kimage *);
  38extern void (*_machine_kexec_shutdown)(void);
  39extern void (*_machine_crash_shutdown)(struct pt_regs *regs);
  40void default_machine_crash_shutdown(struct pt_regs *regs);
  41void kexec_nonboot_cpu_jump(void);
  42void kexec_reboot(void);
  43#ifdef CONFIG_SMP
  44extern const unsigned char kexec_smp_wait[];
  45extern unsigned long secondary_kexec_args[4];
  46extern atomic_t kexec_ready_to_reboot;
  47extern void (*_crash_smp_send_stop)(void);
  48#endif
  49#endif
  50
  51#endif /* !_MIPS_KEXEC */
  52