sys/arch/sh3/include/wdtreg.h

   1 /* $NetBSD: wdtreg.h,v 1.4.12.1 2005/11/10 13:58:38 skrll Exp $ */
   2
   3 /*-
   4  * Copyright (C) 1999 SAITOH Masanobu.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef _SH3_WDTREG_H_
  30 #define _SH3_WDTREG_H_
  31
  32 /* WDT registers */
  33
  34 #if !defined(SH4)
  35
  36 /* SH3 definitions */
  37 #define SHREG_WTCNT     0xffffff84
  38 #define SHREG_WTCSR     0xffffff86
  39
  40 #else
  41
  42 /* SH4 definitions */
  43 #define SHREG_WTCNT     0xffc00008
  44 #define SHREG_WTCSR     0xffc0000c
  45
  46 #endif
  47
  48 /* read as bytes, write as shorts with a magic number in the upper byte */
  49 #define SHREG_WTCNT_R   (*(volatile unsigned char  *)SHREG_WTCNT)
  50 #define SHREG_WTCNT_W   (*(volatile unsigned short *)SHREG_WTCNT)
  51 #define SHREG_WTCSR_R   (*(volatile unsigned char  *)SHREG_WTCSR)
  52 #define SHREG_WTCSR_W   (*(volatile unsigned short *)SHREG_WTCSR)
  53
  54 /* magic upper bytes for write access */
  55 #define WTCNT_W_M       0x5A00
  56 #define WTCSR_W_M       0xA500
  57
  58 #define WTCSR_TME       0x80
  59 #define WTCSR_WT        0x40
  60 #define WTCSR_RSTS      0x20
  61 #define WTCSR_WOVF      0x10
  62 #define WTCSR_IOVF      0x08
  63 #define WTCSR_CKS2      0x04
  64 #define WTCSR_CKS1      0x02
  65 #define WTCSR_CKS0      0x01
  66
  67 #define WTCSR_CKS       0x07
  68 #define WTCSR_CKS_1     0x00
  69 #define WTCSR_CKS_4     0x01
  70 #define WTCSR_CKS_16    0x02
  71 #define WTCSR_CKS_32    0x03
  72 #define WTCSR_CKS_64    0x04
  73 #define WTCSR_CKS_256   0x05
  74 #define WTCSR_CKS_1024  0x06
  75 #define WTCSR_CKS_4096  0x07
  76
  77 #endif  /* !_SH3_WDTREG_H_ */