root/include/linux/reboot.h

INCLUDED FROM

   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_UNDEFINED = -1,
  18         REBOOT_COLD = 0,
  19         REBOOT_WARM,
  20         REBOOT_HARD,
  21         REBOOT_SOFT,
  22         REBOOT_GPIO,
  23 };
  24 extern enum reboot_mode reboot_mode;
  25 extern enum reboot_mode panic_reboot_mode;
  26 
  27 enum 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 };
  36 extern enum reboot_type reboot_type;
  37 
  38 extern int reboot_default;
  39 extern int reboot_cpu;
  40 extern int reboot_force;
  41 
  42 
  43 extern int register_reboot_notifier(struct notifier_block *);
  44 extern int unregister_reboot_notifier(struct notifier_block *);
  45 
  46 extern int devm_register_reboot_notifier(struct device *, struct notifier_block *);
  47 
  48 extern int register_restart_handler(struct notifier_block *);
  49 extern int unregister_restart_handler(struct notifier_block *);
  50 extern void do_kernel_restart(char *cmd);
  51 
  52 /*
  53  * Architecture-specific implementations of sys_reboot commands.
  54  */
  55 
  56 extern void migrate_to_reboot_cpu(void);
  57 extern void machine_restart(char *cmd);
  58 extern void machine_halt(void);
  59 extern void machine_power_off(void);
  60 
  61 extern void machine_shutdown(void);
  62 struct pt_regs;
  63 extern void machine_crash_shutdown(struct pt_regs *);
  64 
  65 /*
  66  * Architecture independent implemenations of sys_reboot commands.
  67  */
  68 
  69 extern void kernel_restart_prepare(char *cmd);
  70 extern void kernel_restart(char *cmd);
  71 extern void kernel_halt(void);
  72 extern void kernel_power_off(void);
  73 
  74 extern int C_A_D; /* for sysctl */
  75 void ctrl_alt_del(void);
  76 
  77 #define POWEROFF_CMD_PATH_LEN   256
  78 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
  79 
  80 extern void orderly_poweroff(bool force);
  81 extern void orderly_reboot(void);
  82 
  83 /*
  84  * Emergency restart, callable from an interrupt handler.
  85  */
  86 
  87 extern void emergency_restart(void);
  88 #include <asm/emergency-restart.h>
  89 
  90 #endif /* _LINUX_REBOOT_H */