1012771d8Swdenk /* 2012771d8Swdenk * (C) Copyright 2001 3012771d8Swdenk * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. 4012771d8Swdenk * 51a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6012771d8Swdenk */ 7012771d8Swdenk 8012771d8Swdenk /* 9012771d8Swdenk * Watchdog functions and macros. 10012771d8Swdenk */ 11012771d8Swdenk #ifndef _WATCHDOG_H_ 12012771d8Swdenk #define _WATCHDOG_H_ 13012771d8Swdenk 14a6741bceSSimon Glass #if !defined(__ASSEMBLY__) 15a6741bceSSimon Glass /* 16a6741bceSSimon Glass * Reset the watchdog timer, always returns 0 17a6741bceSSimon Glass * 18a6741bceSSimon Glass * This function is here since it is shared between board_f() and board_r(), 19a6741bceSSimon Glass * and the legacy arch/<arch>/board.c code. 20a6741bceSSimon Glass */ 21a6741bceSSimon Glass int init_func_watchdog_reset(void); 22a6741bceSSimon Glass #endif 23a6741bceSSimon Glass 249be2e790SSimon Glass #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG) 25a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init, 26a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset, 27a6741bceSSimon Glass #else 28a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_INIT 29a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_RESET 30a6741bceSSimon Glass #endif 31a6741bceSSimon Glass 32012771d8Swdenk #if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG) 33012771d8Swdenk # error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together." 34012771d8Swdenk #endif 35012771d8Swdenk 36012771d8Swdenk /* 37012771d8Swdenk * Hardware watchdog 38012771d8Swdenk */ 39012771d8Swdenk #ifdef CONFIG_HW_WATCHDOG 40012771d8Swdenk #if defined(__ASSEMBLY__) 41012771d8Swdenk #define WATCHDOG_RESET bl hw_watchdog_reset 42012771d8Swdenk #else 43012771d8Swdenk extern void hw_watchdog_reset(void); 44012771d8Swdenk 45012771d8Swdenk #define WATCHDOG_RESET hw_watchdog_reset 46012771d8Swdenk #endif /* __ASSEMBLY__ */ 47012771d8Swdenk #else 48012771d8Swdenk /* 49012771d8Swdenk * Maybe a software watchdog? 50012771d8Swdenk */ 51012771d8Swdenk #if defined(CONFIG_WATCHDOG) 52012771d8Swdenk #if defined(__ASSEMBLY__) 53012771d8Swdenk #define WATCHDOG_RESET bl watchdog_reset 54012771d8Swdenk #else 55012771d8Swdenk extern void watchdog_reset(void); 56012771d8Swdenk 57012771d8Swdenk #define WATCHDOG_RESET watchdog_reset 58012771d8Swdenk #endif 59012771d8Swdenk #else 60012771d8Swdenk /* 61012771d8Swdenk * No hardware or software watchdog. 62012771d8Swdenk */ 63012771d8Swdenk #if defined(__ASSEMBLY__) 64012771d8Swdenk #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/ 65012771d8Swdenk #else 66012771d8Swdenk #define WATCHDOG_RESET() {} 67012771d8Swdenk #endif /* __ASSEMBLY__ */ 68012771d8Swdenk #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */ 69012771d8Swdenk #endif /* CONFIG_HW_WATCHDOG */ 70012771d8Swdenk 71012771d8Swdenk /* 72012771d8Swdenk * Prototypes from $(CPU)/cpu.c. 73012771d8Swdenk */ 74012771d8Swdenk 75907208c4SChristophe Leroy /* MPC 8xx */ 76*87e4c602SChristophe Leroy #if defined(CONFIG_MPC8xx) && !defined(__ASSEMBLY__) 77ba3da734SChristophe Leroy void reset_8xx_watchdog(immap_t __iomem *immr); 78907208c4SChristophe Leroy #endif 79907208c4SChristophe Leroy 80e9a389a1SSonic Zhang #if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__) 81a6720762STom Rini void hw_watchdog_init(void); 82a6720762STom Rini #endif 830f8062b2SBoschung, Rainer 840f8062b2SBoschung, Rainer #if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__) 850f8062b2SBoschung, Rainer void init_85xx_watchdog(void); 860f8062b2SBoschung, Rainer #endif 87012771d8Swdenk #endif /* _WATCHDOG_H_ */ 88