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         void hw_watchdog_init(void);
  39         #if defined(__ASSEMBLY__)
  40                 #define WATCHDOG_RESET bl hw_watchdog_reset
  41         #else
  42                 extern void hw_watchdog_reset(void);
  43
  44                 #define WATCHDOG_RESET hw_watchdog_reset
  45         #endif /* __ASSEMBLY__ */
  46 #else
  47         /*
  48          * Maybe a software watchdog?
  49          */
  50         #if defined(CONFIG_WATCHDOG)
  51                 #if defined(__ASSEMBLY__)
  52                         #define WATCHDOG_RESET bl watchdog_reset
  53                 #else
  54                         extern void watchdog_reset(void);
  55
  56                         #define WATCHDOG_RESET watchdog_reset
  57                 #endif
  58         #else
  59                 /*
  60                  * No hardware or software watchdog.
  61                  */
  62                 #if defined(__ASSEMBLY__)
  63                         #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
  64                 #else
  65                         #define WATCHDOG_RESET() {}
  66                 #endif /* __ASSEMBLY__ */
  67         #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
  68 #endif /* CONFIG_HW_WATCHDOG */
  69
  70 /*
  71  * Prototypes from $(CPU)/cpu.c.
  72  */
  73
  74 /* MPC 8xx */
  75 #if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__)
  76         void reset_8xx_watchdog(volatile immap_t *immr);
  77 #endif
  78
  79 /* MPC 5xx */
  80 #if defined(CONFIG_5xx) && !defined(__ASSEMBLY__)
  81         void reset_5xx_watchdog(volatile immap_t *immr);
  82 #endif
  83
  84 /* MPC 5xxx */
  85 #if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__)
  86         void reset_5xxx_watchdog(void);
  87 #endif
  88
  89 /* AMCC 4xx */
  90 #if defined(CONFIG_4xx) && !defined(__ASSEMBLY__)
  91         void reset_4xx_watchdog(void);
  92 #endif
  93
  94 #endif /* _WATCHDOG_H_ */