text: /************************************************************************************
   * arch/arm/src/imx1/imx_wdog.h
   *
   *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name NuttX nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   ************************************************************************************/
  
  #ifndef __ARCH_ARM_IMX_WDOG_H
  #define __ARCH_ARM_IMX_WDOG_H
  
  /************************************************************************************
   * Included Files
   ************************************************************************************/
  
  /************************************************************************************
   * Pre-processor Definitions
   ************************************************************************************/
  
  /* WDOG Register Offsets ************************************************************/
  
  #define WDOG_WCR_OFFSET     0x0000 /* Watchdog Control Register */
  #define WDOG_WSR_OFFSET     0x0004 /* Watchdog Service Register */
  #define WDOG_WSTR_OFFSET    0x0008 /* Watchdog Status Register */
  
  /* WDOG Register Addresses **********************************************************/
  
  #define IMX_WDOG_WCR        (IMX_WDOG_VBASE + WDOG_WCR_OFFSET)
  #define IMX_WDOG_WSR        (IMX_WDOG_VBASE + WDOG_WSR_OFFSET)
  #define IMX_WDOG_WSTRT      (IMX_WDOG_VBASE + WDOG_WSTR_OFFSET)
  
  /* WDOG Register Bit Definitions ****************************************************/
  
  /* Watchdog Control Register */
  
  #define WDOG_WCR_WDE        (1 << 0)  /* Bit 0: Watchdog Enable */
  #define WDOG_WCR_WDEC       (1 << 1)  /* Bit 1: Watchdog Enable Control */
  #define WDOG_WCR_SWR        (1 << 2)  /* Bit 2: Software Reset Enable */
  #define WDOG_WCR_TMD        (1 << 3)  /* Bit 3: Test Mode Enable */
  #define WDOG_WCR_WIE        (1 << 4)  /* Bit 4: Watchdog Interrupt Enable */
  #define WDOG_WCR_WT_SHIFT   8 /* Bit 8-14: Watchdog Timeout */
  #define WDOG_WCR_WT_MASK    (0x7f << WDOG_WCR_WT_SHIFT)
  #define WDOG_WCR_WHALT      (1 << 15) /* Bit 15: Watchdog Halt */
  
  /* Watchdog Service Register */
  
  #define WDOG_WSR_SHIFT      0 /* Bit 0-15: Watchdog Service Register */
  #define WDOG_WT_MASK        (0xffff << WDOG_WSR_SHIFT)
  
  /************************************************************************************
   * Inline Functions
   ************************************************************************************/
  
  #endif /* __ARCH_ARM_IMX_WDOG_H */
  