arch/mips/mips-boards/generic/reset.c

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   4  *
   5  * ########################################################################
   6  *
   7  *  This program is free software; you can distribute it and/or modify it
   8  *  under the terms of the GNU General Public License (Version 2) as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope it will be useful, but WITHOUT
  12  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  *  for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License along
  17  *  with this program; if not, write to the Free Software Foundation, Inc.,
  18  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  19  *
  20  * ########################################################################
  21  *
  22  * Reset the MIPS boards.
  23  *
  24  */
  25 #include <linux/config.h>
  26
  27 #include <asm/io.h>
  28 #include <asm/reboot.h>
  29 #include <asm/mips-boards/generic.h>
  30 #if defined(CONFIG_MIPS_ATLAS)
  31 #include <asm/mips-boards/atlas.h>
  32 #endif
  33
  34 static void mips_machine_restart(char *command);
  35 static void mips_machine_halt(void);
  36 #if defined(CONFIG_MIPS_ATLAS)
  37 static void atlas_machine_power_off(void);
  38 #endif
  39
  40 static void mips_machine_restart(char *command)
  41 {
  42         volatile unsigned int *softres_reg = (unsigned int *)ioremap (SOFTRES_REG, sizeof(unsigned int));
  43
  44         *softres_reg = GORESET;
  45 }
  46
  47 static void mips_machine_halt(void)
  48 {
  49         volatile unsigned int *softres_reg = (unsigned int *)ioremap (SOFTRES_REG, sizeof(unsigned int));
  50
  51         *softres_reg = GORESET;
  52 }
  53
  54 #if defined(CONFIG_MIPS_ATLAS)
  55 static void atlas_machine_power_off(void)
  56 {
  57         volatile unsigned int *psustby_reg = (unsigned int *)ioremap(ATLAS_PSUSTBY_REG, sizeof(unsigned int));
  58
  59         *psustby_reg = ATLAS_GOSTBY;
  60 }
  61 #endif
  62
  63 void mips_reboot_setup(void)
  64 {
  65         _machine_restart = mips_machine_restart;
  66         _machine_halt = mips_machine_halt;
  67 #if defined(CONFIG_MIPS_ATLAS)
  68         _machine_power_off = atlas_machine_power_off;
  69 #endif
  70 #if defined(CONFIG_MIPS_MALTA) || defined(CONFIG_MIPS_SEAD)
  71         _machine_power_off = mips_machine_halt;
  72 #endif
  73 }