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