1 // SPDX-License-Identifier: GPL-2.0
2 /* reboot.c: reboot/shutdown/halt/poweroff handling
6 #include <linux/kernel.h>
7 #include <linux/reboot.h>
8 #include <linux/export.h>
12 #include <asm/oplib.h>
14 #include <asm/setup.h>
16 /* sysctl - toggle power-off restriction for serial console
17 * systems in machine_power_off()
21 /* This isn't actually used, it exists merely to satisfy the
22 * reference in kernel/sys.c
24 void (*pm_power_off)(void) = machine_power_off;
25 EXPORT_SYMBOL(pm_power_off);
27 void machine_power_off(void)
29 if (!of_node_is_type(of_console_device, "serial") || scons_pwroff)
30 prom_halt_power_off();
35 void machine_halt(void)
38 panic("Halt failed!");
41 void machine_restart(char *cmd)
45 p = strchr(reboot_command, '\n');
51 prom_reboot(reboot_command);
53 panic("Reboot failed!");