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