1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology 5 * Author: Fuxin Zhang, zhangfx@lemote.com 6 * Copyright (C) 2009 Lemote, Inc. 7 * Author: Zhangjin Wu, wuzhangjin@gmail.com 8 */ 9 #include <linux/init.h> 10 #include <linux/pm.h> 11 12 #include <asm/idle.h> 13 #include <asm/reboot.h> 14 15 #include <loongson.h> 16 #include <boot_param.h> 17 18 static inline void loongson_reboot(void) 19 { 20 ((void (*)(void))ioremap_nocache(LOONGSON_BOOT_BASE, 4)) (); 21 } 22 23 static void loongson_restart(char *command) 24 { 25 26 void (*fw_restart)(void) = (void *)loongson_sysconf.restart_addr; 27 28 fw_restart(); 29 while (1) { 30 if (cpu_wait) 31 cpu_wait(); 32 } 33 } 34 35 static void loongson_poweroff(void) 36 { 37 void (*fw_poweroff)(void) = (void *)loongson_sysconf.poweroff_addr; 38 39 fw_poweroff(); 40 while (1) { 41 if (cpu_wait) 42 cpu_wait(); 43 } 44 } 45 46 static void loongson_halt(void) 47 { 48 pr_notice("\n\n** You can safely turn off the power now **\n\n"); 49 while (1) { 50 if (cpu_wait) 51 cpu_wait(); 52 } 53 } 54 55 static int __init mips_reboot_setup(void) 56 { 57 _machine_restart = loongson_restart; 58 _machine_halt = loongson_halt; 59 pm_power_off = loongson_poweroff; 60 61 return 0; 62 } 63 64 arch_initcall(mips_reboot_setup); 65