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178 lines
4.4 KiB
178 lines
4.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_REBOOT_H |
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#define _LINUX_REBOOT_H |
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#include <linux/notifier.h> |
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#include <uapi/linux/reboot.h> |
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struct device; |
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struct sys_off_handler; |
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#define SYS_DOWN 0x0001 /* Notify of system down */ |
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#define SYS_RESTART SYS_DOWN |
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#define SYS_HALT 0x0002 /* Notify of system halt */ |
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#define SYS_POWER_OFF 0x0003 /* Notify of system power off */ |
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enum reboot_mode { |
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REBOOT_UNDEFINED = -1, |
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REBOOT_COLD = 0, |
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REBOOT_WARM, |
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REBOOT_HARD, |
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REBOOT_SOFT, |
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REBOOT_GPIO, |
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}; |
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extern enum reboot_mode reboot_mode; |
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extern enum reboot_mode panic_reboot_mode; |
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enum reboot_type { |
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BOOT_TRIPLE = 't', |
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BOOT_KBD = 'k', |
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BOOT_BIOS = 'b', |
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BOOT_ACPI = 'a', |
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BOOT_EFI = 'e', |
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BOOT_CF9_FORCE = 'p', |
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BOOT_CF9_SAFE = 'q', |
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}; |
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extern enum reboot_type reboot_type; |
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extern int reboot_default; |
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extern int reboot_cpu; |
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extern int reboot_force; |
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extern int register_reboot_notifier(struct notifier_block *); |
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extern int unregister_reboot_notifier(struct notifier_block *); |
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extern int devm_register_reboot_notifier(struct device *, struct notifier_block *); |
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extern int register_restart_handler(struct notifier_block *); |
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extern int unregister_restart_handler(struct notifier_block *); |
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extern void do_kernel_restart(char *cmd); |
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/* |
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* Architecture-specific implementations of sys_reboot commands. |
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*/ |
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extern void migrate_to_reboot_cpu(void); |
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extern void machine_restart(char *cmd); |
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extern void machine_halt(void); |
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extern void machine_power_off(void); |
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extern void machine_shutdown(void); |
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struct pt_regs; |
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extern void machine_crash_shutdown(struct pt_regs *); |
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void do_kernel_power_off(void); |
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/* |
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* sys-off handler API. |
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*/ |
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/* |
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* Standard sys-off priority levels. Users are expected to set priorities |
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* relative to the standard levels. |
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* |
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* SYS_OFF_PRIO_PLATFORM: Use this for platform-level handlers. |
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* |
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* SYS_OFF_PRIO_LOW: Use this for handler of last resort. |
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* |
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* SYS_OFF_PRIO_DEFAULT: Use this for normal handlers. |
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* |
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* SYS_OFF_PRIO_HIGH: Use this for higher priority handlers. |
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* |
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* SYS_OFF_PRIO_FIRMWARE: Use this if handler uses firmware call. |
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*/ |
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#define SYS_OFF_PRIO_PLATFORM -256 |
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#define SYS_OFF_PRIO_LOW -128 |
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#define SYS_OFF_PRIO_DEFAULT 0 |
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#define SYS_OFF_PRIO_HIGH 192 |
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#define SYS_OFF_PRIO_FIRMWARE 224 |
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enum sys_off_mode { |
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/** |
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* @SYS_OFF_MODE_POWER_OFF_PREPARE: |
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* |
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* Handlers prepare system to be powered off. Handlers are |
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* allowed to sleep. |
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*/ |
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SYS_OFF_MODE_POWER_OFF_PREPARE, |
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/** |
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* @SYS_OFF_MODE_POWER_OFF: |
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* |
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* Handlers power-off system. Handlers are disallowed to sleep. |
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*/ |
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SYS_OFF_MODE_POWER_OFF, |
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/** |
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* @SYS_OFF_MODE_RESTART: |
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* |
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* Handlers restart system. Handlers are disallowed to sleep. |
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*/ |
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SYS_OFF_MODE_RESTART, |
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}; |
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/** |
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* struct sys_off_data - sys-off callback argument |
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* |
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* @mode: Mode ID. Currently used only by the sys-off restart mode, |
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* see enum reboot_mode for the available modes. |
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* @cb_data: User's callback data. |
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* @cmd: Command string. Currently used only by the sys-off restart mode, |
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* NULL otherwise. |
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*/ |
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struct sys_off_data { |
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int mode; |
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void *cb_data; |
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const char *cmd; |
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}; |
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struct sys_off_handler * |
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register_sys_off_handler(enum sys_off_mode mode, |
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int priority, |
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int (*callback)(struct sys_off_data *data), |
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void *cb_data); |
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void unregister_sys_off_handler(struct sys_off_handler *handler); |
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int devm_register_sys_off_handler(struct device *dev, |
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enum sys_off_mode mode, |
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int priority, |
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int (*callback)(struct sys_off_data *data), |
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void *cb_data); |
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int devm_register_power_off_handler(struct device *dev, |
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int (*callback)(struct sys_off_data *data), |
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void *cb_data); |
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int devm_register_restart_handler(struct device *dev, |
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int (*callback)(struct sys_off_data *data), |
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void *cb_data); |
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int register_platform_power_off(void (*power_off)(void)); |
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void unregister_platform_power_off(void (*power_off)(void)); |
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/* |
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* Architecture independent implemenations of sys_reboot commands. |
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*/ |
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extern void kernel_restart_prepare(char *cmd); |
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extern void kernel_restart(char *cmd); |
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extern void kernel_halt(void); |
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extern void kernel_power_off(void); |
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extern bool kernel_can_power_off(void); |
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void ctrl_alt_del(void); |
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extern void orderly_poweroff(bool force); |
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extern void orderly_reboot(void); |
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void hw_protection_shutdown(const char *reason, int ms_until_forced); |
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/* |
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* Emergency restart, callable from an interrupt handler. |
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*/ |
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extern void emergency_restart(void); |
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#include <asm/emergency-restart.h> |
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#endif /* _LINUX_REBOOT_H */
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