watchdog.h
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/*
* (C) Copyright 2001
* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Watchdog functions and macros.
*/
#ifndef _WATCHDOG_H_
#define _WATCHDOG_H_
#if !defined(__ASSEMBLY__)
/*
* Reset the watchdog timer, always returns 0
*
* This function is here since it is shared between board_f() and board_r(),
* and the legacy arch/<arch>/board.c code.
*/
int init_func_watchdog_reset(void);
#endif
#if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
#define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init,
#define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset,
#else
#define INIT_FUNC_WATCHDOG_INIT
#define INIT_FUNC_WATCHDOG_RESET
#endif
#if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG)
# error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together."
#endif
/*
* Hardware watchdog
*/
#ifdef CONFIG_HW_WATCHDOG
#if defined(__ASSEMBLY__)
#define WATCHDOG_RESET bl hw_watchdog_reset
#else
extern void hw_watchdog_reset(void);
#define WATCHDOG_RESET hw_watchdog_reset
#endif /* __ASSEMBLY__ */
#else
/*
* Maybe a software watchdog?
*/
#if defined(CONFIG_WATCHDOG)
#if defined(__ASSEMBLY__)
#define WATCHDOG_RESET bl watchdog_reset
#else
extern void watchdog_reset(void);
#define WATCHDOG_RESET watchdog_reset
#endif
#else
/*
* No hardware or software watchdog.
*/
#if defined(__ASSEMBLY__)
#define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/
#else
#define WATCHDOG_RESET() {}
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */
#endif /* CONFIG_HW_WATCHDOG */
/*
* Prototypes from $(CPU)/cpu.c.
*/
/* MPC 8xx */
#if defined(CONFIG_8xx) && !defined(__ASSEMBLY__)
void reset_8xx_watchdog(immap_t __iomem *immr);
#endif
#if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__)
void hw_watchdog_init(void);
#endif
#if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__)
void init_85xx_watchdog(void);
#endif
#endif /* _WATCHDOG_H_ */