/*
   * Copyright (C) 1999 ARM Limited
   * Copyright (C) 2000 Deep Blue Solutions Ltd
   * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   * Copyright 2008 Juergen Beisert, kernel@pengutronix.de

   * Copyright 2009 Ilya Yanok, Emcraft Systems Ltd, yanok@emcraft.com

   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.

   */
  
  #include <linux/kernel.h>
  #include <linux/clk.h>
  #include <linux/io.h>

  #include <linux/err.h>
  #include <linux/delay.h>

  #include <linux/module.h>

  #include <mach/hardware.h>

  #include <mach/common.h>

  #include <asm/proc-fns.h>
  #include <asm/system.h>

  #include <asm/mach-types.h>

  void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int) = NULL;

  EXPORT_SYMBOL_GPL(imx_ioremap);

  static void __iomem *wdog_base;

  
  /*
   * Reset the system. It is called by machine_restart().
   */

  void mxc_restart(char mode, const char *cmd)

  {

  	unsigned int wcr_enable;
  
  	if (cpu_is_mx1()) {
  		wcr_enable = (1 << 0);
  	} else {

  		struct clk *clk;

  		clk = clk_get_sys("imx2-wdt.0", NULL);

  		if (!IS_ERR(clk))
  			clk_enable(clk);

  		wcr_enable = (1 << 2);

  	}

  	/* Assert SRS signal */

  	__raw_writew(wcr_enable, wdog_base);

  
  	/* wait for reset to assert... */
  	mdelay(500);
  
  	printk(KERN_ERR "Watchdog reset failed to assert reset
  ");
  
  	/* delay to allow the serial port to show the message */
  	mdelay(50);
  
  	/* we'll take a jump through zero as a poor second */

  	soft_restart(0);

  }

  
  void mxc_arch_reset_init(void __iomem *base)
  {
  	wdog_base = base;
  }