arch/mips/mti-sead3/sead3-reset.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
   7  */
   8 #include <linux/io.h>
   9 #include <linux/pm.h>
  10
  11 #include <asm/reboot.h>
  12
  13 #define SOFTRES_REG     0x1f000050
  14 #define GORESET         0x4d
  15
  16 static void mips_machine_restart(char *command)
  17 {
  18         unsigned int __iomem *softres_reg =
  19                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  20
  21         __raw_writel(GORESET, softres_reg);
  22 }
  23
  24 static void mips_machine_halt(void)
  25 {
  26         unsigned int __iomem *softres_reg =
  27                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  28
  29         __raw_writel(GORESET, softres_reg);
  30 }
  31
  32 static int __init mips_reboot_setup(void)
  33 {
  34         _machine_restart = mips_machine_restart;
  35         _machine_halt = mips_machine_halt;
  36         pm_power_off = mips_machine_halt;
  37
  38         return 0;
  39 }
  40 arch_initcall(mips_reboot_setup);