LXR linux/include/linux/reboot.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _LINUX_REBOOT_H
   3#define _LINUX_REBOOT_H
   4
   5
   6#include <linux/notifier.h>
   7#include <uapi/linux/reboot.h>
   8
   9struct device;
  10
  11#define SYS_DOWN        0x0001  /* Notify of system down */
  12#define SYS_RESTART     SYS_DOWN
  13#define SYS_HALT        0x0002  /* Notify of system halt */
  14#define SYS_POWER_OFF   0x0003  /* Notify of system power off */
  15
  16enum reboot_mode {
  17        REBOOT_UNDEFINED = -1,
  18        REBOOT_COLD = 0,
  19        REBOOT_WARM,
  20        REBOOT_HARD,
  21        REBOOT_SOFT,
  22        REBOOT_GPIO,
  23};
  24extern enum reboot_mode reboot_mode;
  25extern enum reboot_mode panic_reboot_mode;
  26
  27enum reboot_type {
  28        BOOT_TRIPLE     = 't',
  29        BOOT_KBD        = 'k',
  30        BOOT_BIOS       = 'b',
  31        BOOT_ACPI       = 'a',
  32        BOOT_EFI        = 'e',
  33        BOOT_CF9_FORCE  = 'p',
  34        BOOT_CF9_SAFE   = 'q',
  35};
  36extern enum reboot_type reboot_type;
  37
  38extern int reboot_default;
  39extern int reboot_cpu;
  40extern int reboot_force;
  41
  42
  43extern int register_reboot_notifier(struct notifier_block *);
  44extern int unregister_reboot_notifier(struct notifier_block *);
  45
  46extern int devm_register_reboot_notifier(struct device *, struct notifier_block *);
  47
  48extern int register_restart_handler(struct notifier_block *);
  49extern int unregister_restart_handler(struct notifier_block *);
  50extern void do_kernel_restart(char *cmd);
  51
  52/*
  53 * Architecture-specific implementations of sys_reboot commands.
  54 */
  55
  56extern void migrate_to_reboot_cpu(void);
  57extern void machine_restart(char *cmd);
  58extern void machine_halt(void);
  59extern void machine_power_off(void);
  60
  61extern void machine_shutdown(void);
  62struct pt_regs;
  63extern void machine_crash_shutdown(struct pt_regs *);
  64
  65/*
  66 * Architecture independent implemenations of sys_reboot commands.
  67 */
  68
  69extern void kernel_restart_prepare(char *cmd);
  70extern void kernel_restart(char *cmd);
  71extern void kernel_halt(void);
  72extern void kernel_power_off(void);
  73
  74extern int C_A_D; /* for sysctl */
  75void ctrl_alt_del(void);
  76
  77#define POWEROFF_CMD_PATH_LEN   256
  78extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
  79
  80extern void orderly_poweroff(bool force);
  81extern void orderly_reboot(void);
  82
  83/*
  84 * Emergency restart, callable from an interrupt handler.
  85 */
  86
  87extern void emergency_restart(void);
  88#include <asm/emergency-restart.h>
  89
  90#endif /* _LINUX_REBOOT_H */
  91