arch/mips/mti-malta/malta-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  * Carsten Langgaard, carstenl@mips.com
   7  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   8  */
   9 #include <linux/io.h>
  10 #include <linux/pm.h>
  11
  12 #include <asm/reboot.h>
  13
  14 #define SOFTRES_REG     0x1f000500
  15 #define GORESET         0x42
  16
  17 static void mips_machine_restart(char *command)
  18 {
  19         unsigned int __iomem *softres_reg =
  20                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  21
  22         __raw_writel(GORESET, softres_reg);
  23 }
  24
  25 static void mips_machine_halt(void)
  26 {
  27         unsigned int __iomem *softres_reg =
  28                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  29
  30         __raw_writel(GORESET, softres_reg);
  31 }
  32
  33 static int __init mips_reboot_setup(void)
  34 {
  35         _machine_restart = mips_machine_restart;
  36         _machine_halt = mips_machine_halt;
  37         pm_power_off = mips_machine_halt;
  38
  39         return 0;
  40 }
  41 arch_initcall(mips_reboot_setup);