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

   1 /*
   2  * Carsten Langgaard, carstenl@mips.com
   3  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
   4  * Portions copyright (C) 2009 Cisco Systems, Inc.
   5  *
   6  *  This program is free software; you can distribute it and/or modify it
   7  *  under the terms of the GNU General Public License (Version 2) as
   8  *  published by the Free Software Foundation.
   9  *
  10  *  This program is distributed in the hope it will be useful, but WITHOUT
  11  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  *  for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  18  */
  19 #include <linux/pm.h>
  20
  21 #include <linux/io.h>
  22 #include <asm/reboot.h>                 /* Not included by linux/reboot.h */
  23
  24 #ifdef CONFIG_BOOTLOADER_DRIVER
  25 #include <asm/mach-powertv/kbldr.h>
  26 #endif
  27
  28 #include <asm/mach-powertv/asic_regs.h>
  29 #include "reset.h"
  30
  31 static void mips_machine_restart(char *command)
  32 {
  33 #ifdef CONFIG_BOOTLOADER_DRIVER
  34         /*
  35          * Call the bootloader's reset function to ensure
  36          * that persistent data is flushed before hard reset
  37          */
  38         kbldr_SetCauseAndReset();
  39 #else
  40         writel(0x1, asic_reg_addr(watchdog));
  41 #endif
  42 }
  43
  44 void mips_reboot_setup(void)
  45 {
  46         _machine_restart = mips_machine_restart;
  47 }