LXR uboot/include/watchdog.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * (C) Copyright 2001
   4 * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
   5 */
   6
   7/*
   8 * Watchdog functions and macros.
   9 */
  10#ifndef _WATCHDOG_H_
  11#define _WATCHDOG_H_
  12
  13#if !defined(__ASSEMBLY__)
  14/*
  15 * Reset the watchdog timer, always returns 0
  16 *
  17 * This function is here since it is shared between board_f() and board_r(),
  18 * and the legacy arch/<arch>/board.c code.
  19 */
  20int init_func_watchdog_reset(void);
  21#endif
  22
  23#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
  24#define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
  25#define INIT_FUNC_WATCHDOG_RESET        init_func_watchdog_reset,
  26#else
  27#define INIT_FUNC_WATCHDOG_INIT
  28#define INIT_FUNC_WATCHDOG_RESET
  29#endif
  30
  31#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
  32#  error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
  33#endif
  34
  35/*
  36 * Hardware watchdog
  37 */
  38#ifdef CONFIG_HW_WATCHDOG
  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#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
  75        void hw_watchdog_init(void);
  76#endif
  77
  78#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
  79        void init_85xx_watchdog(void);
  80#endif
  81#endif /* _WATCHDOG_H_ */
  82