release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/mti-sead3/sead3-reset.c

   1 #define DEBUG
   2 /*
   3  * Carsten Langgaard, carstenl@mips.com
   4  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   5  *
   6  * ########################################################################
   7  *
   8  *  This program is free software; you can distribute it and/or modify it
   9  *  under the terms of the GNU General Public License (Version 2) as
  10  *  published by the Free Software Foundation.
  11  *
  12  *  This program is distributed in the hope it will be useful, but WITHOUT
  13  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  *  for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  20  *
  21  * ########################################################################
  22  *
  23  * Reset the MIPS boards.
  24  *
  25  */
  26 #include <linux/init.h>
  27 #include <linux/pm.h>
  28
  29 #include <asm/io.h>
  30 #include <asm/reboot.h>
  31
  32 #define  SOFTRES_REG            0x1F000050
  33 #define  GORESET                0x4D
  34
  35 static void mips_machine_restart(char *command);
  36 static void mips_machine_halt(void);
  37
  38 static void mips_machine_restart(char *command)
  39 {
  40         unsigned int __iomem *softres_reg =
  41                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  42
  43         __raw_writel(GORESET, softres_reg);
  44 }
  45
  46 static void mips_machine_halt(void)
  47 {
  48         unsigned int __iomem *softres_reg =
  49                 ioremap(SOFTRES_REG, sizeof(unsigned int));
  50
  51         __raw_writel(GORESET, softres_reg);
  52 }
  53
  54
  55 static int __init mips_reboot_setup(void)
  56 {
  57         _machine_restart = mips_machine_restart;
  58         _machine_halt = mips_machine_halt;
  59         pm_power_off = mips_machine_halt;
  60
  61         return 0;
  62 }
  63
  64 arch_initcall(mips_reboot_setup);