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 */ 89