LXR uboot/include/watchdog.h

   1/*
   2 * (C) Copyright 2001
   3 * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   8 * This program is free software; you can redistribute it and/or
   9 * modify it under the terms of the GNU General Public License as
  10 * published by the Free Software Foundation; either version 2 of
  11 * the License, or (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*
  25 * Watchdog functions and macros.
  26 */
  27#ifndef _WATCHDOG_H_
  28#define _WATCHDOG_H_
  29
  30#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
  31#  error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
  32#endif
  33
  34/*
  35 * Hardware watchdog
  36 */
  37#ifdef CONFIG_HW_WATCHDOG
  38        #if defined(__ASSEMBLY__)
  39                #define WATCHDOG_RESET bl hw_watchdog_reset
  40        #else
  41                extern void hw_watchdog_reset(void);
  42
  43                #define WATCHDOG_RESET hw_watchdog_reset
  44        #endif /* __ASSEMBLY__ */
  45#else
  46        /*
  47         * Maybe a software watchdog?
  48         */
  49        #if defined(CONFIG_WATCHDOG)
  50                #if defined(__ASSEMBLY__)
  51                        #define WATCHDOG_RESET bl watchdog_reset
  52                #else
  53                        extern void watchdog_reset(void);
  54
  55                        #define WATCHDOG_RESET watchdog_reset
  56                #endif
  57        #else
  58                /*
  59                 * No hardware or software watchdog.
  60                 */
  61                #if defined(__ASSEMBLY__)
  62                        #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
  63                #else
  64                        #define WATCHDOG_RESET() {}
  65                #endif /* __ASSEMBLY__ */
  66        #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
  67#endif /* CONFIG_HW_WATCHDOG */
  68
  69/*
  70 * Prototypes from $(CPU)/cpu.c.
  71 */
  72
  73/* MPC 8xx */
  74#if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__)
  75        void reset_8xx_watchdog(volatile immap_t *immr);
  76#endif
  77
  78/* MPC 5xx */
  79#if defined(CONFIG_5xx) && !defined(__ASSEMBLY__)
  80        void reset_5xx_watchdog(volatile immap_t *immr);
  81#endif
  82
  83/* MPC 5xxx */
  84#if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__)
  85        void reset_5xxx_watchdog(void);
  86#endif
  87
  88/* AMCC 4xx */
  89#if defined(CONFIG_4xx) && !defined(__ASSEMBLY__)
  90        void reset_4xx_watchdog(void);
  91#endif
  92
  93#endif /* _WATCHDOG_H_ */
  94