arch/mips/loongson64/reset.c

   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 void loongson_restart(char *command)
  19 {
  20
  21         void (*fw_restart)(void) = (void *)loongson_sysconf.restart_addr;
  22
  23         fw_restart();
  24         while (1) {
  25                 if (cpu_wait)
  26                         cpu_wait();
  27         }
  28 }
  29
  30 static void loongson_poweroff(void)
  31 {
  32         void (*fw_poweroff)(void) = (void *)loongson_sysconf.poweroff_addr;
  33
  34         fw_poweroff();
  35         while (1) {
  36                 if (cpu_wait)
  37                         cpu_wait();
  38         }
  39 }
  40
  41 static void loongson_halt(void)
  42 {
  43         pr_notice("\n\n** You can safely turn off the power now **\n\n");
  44         while (1) {
  45                 if (cpu_wait)
  46                         cpu_wait();
  47         }
  48 }
  49
  50 static int __init mips_reboot_setup(void)
  51 {
  52         _machine_restart = loongson_restart;
  53         _machine_halt = loongson_halt;
  54         pm_power_off = loongson_poweroff;
  55
  56         return 0;
  57 }
  58
  59 arch_initcall(mips_reboot_setup);