arch/mips/ralink/reset.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify it
   3  * under the terms of the GNU General Public License version 2 as published
   4  * by the Free Software Foundation.
   5  *
   6  * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
   7  * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
   8  * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
   9  */
  10
  11 #include <linux/pm.h>
  12 #include <linux/io.h>
  13
  14 #include <asm/reboot.h>
  15
  16 #include <asm/mach-ralink/ralink_regs.h>
  17
  18 /* Reset Control */
  19 #define SYSC_REG_RESET_CTRL     0x034
  20 #define RSTCTL_RESET_SYSTEM     BIT(0)
  21
  22 static void ralink_restart(char *command)
  23 {
  24         local_irq_disable();
  25         rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
  26         unreachable();
  27 }
  28
  29 static void ralink_halt(void)
  30 {
  31         local_irq_disable();
  32         unreachable();
  33 }
  34
  35 static int __init mips_reboot_setup(void)
  36 {
  37         _machine_restart = ralink_restart;
  38         _machine_halt = ralink_halt;
  39         pm_power_off = ralink_halt;
  40
  41         return 0;
  42 }
  43
  44 arch_initcall(mips_reboot_setup);