1012771d8Swdenk /* 2012771d8Swdenk * (C) Copyright 2001 3012771d8Swdenk * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. 4012771d8Swdenk * 5012771d8Swdenk * See file CREDITS for list of people who contributed to this 6012771d8Swdenk * project. 7012771d8Swdenk * 8012771d8Swdenk * This program is free software; you can redistribute it and/or 9012771d8Swdenk * modify it under the terms of the GNU General Public License as 10012771d8Swdenk * published by the Free Software Foundation; either version 2 of 11012771d8Swdenk * the License, or (at your option) any later version. 12012771d8Swdenk * 13012771d8Swdenk * This program is distributed in the hope that it will be useful, 14012771d8Swdenk * but WITHOUT ANY WARRANTY; without even the implied warranty of 15012771d8Swdenk * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16012771d8Swdenk * GNU General Public License for more details. 17012771d8Swdenk * 18012771d8Swdenk * You should have received a copy of the GNU General Public License 19012771d8Swdenk * along with this program; if not, write to the Free Software 20012771d8Swdenk * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21012771d8Swdenk * MA 02111-1307 USA 22012771d8Swdenk */ 23012771d8Swdenk 24012771d8Swdenk /* 25012771d8Swdenk * Watchdog functions and macros. 26012771d8Swdenk */ 27012771d8Swdenk #ifndef _WATCHDOG_H_ 28012771d8Swdenk #define _WATCHDOG_H_ 29012771d8Swdenk 30*a6741bceSSimon Glass #if !defined(__ASSEMBLY__) 31*a6741bceSSimon Glass /* 32*a6741bceSSimon Glass * Reset the watchdog timer, always returns 0 33*a6741bceSSimon Glass * 34*a6741bceSSimon Glass * This function is here since it is shared between board_f() and board_r(), 35*a6741bceSSimon Glass * and the legacy arch/<arch>/board.c code. 36*a6741bceSSimon Glass */ 37*a6741bceSSimon Glass int init_func_watchdog_reset(void); 38*a6741bceSSimon Glass #endif 39*a6741bceSSimon Glass 40*a6741bceSSimon Glass #ifdef CONFIG_WATCHDOG 41*a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init, 42*a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset, 43*a6741bceSSimon Glass #else 44*a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_INIT 45*a6741bceSSimon Glass #define INIT_FUNC_WATCHDOG_RESET 46*a6741bceSSimon Glass #endif 47*a6741bceSSimon Glass 48012771d8Swdenk #if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG) 49012771d8Swdenk # error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together." 50012771d8Swdenk #endif 51012771d8Swdenk 52012771d8Swdenk /* 53012771d8Swdenk * Hardware watchdog 54012771d8Swdenk */ 55012771d8Swdenk #ifdef CONFIG_HW_WATCHDOG 56012771d8Swdenk #if defined(__ASSEMBLY__) 57012771d8Swdenk #define WATCHDOG_RESET bl hw_watchdog_reset 58012771d8Swdenk #else 59012771d8Swdenk extern void hw_watchdog_reset(void); 60012771d8Swdenk 61012771d8Swdenk #define WATCHDOG_RESET hw_watchdog_reset 62012771d8Swdenk #endif /* __ASSEMBLY__ */ 63012771d8Swdenk #else 64012771d8Swdenk /* 65012771d8Swdenk * Maybe a software watchdog? 66012771d8Swdenk */ 67012771d8Swdenk #if defined(CONFIG_WATCHDOG) 68012771d8Swdenk #if defined(__ASSEMBLY__) 69012771d8Swdenk #define WATCHDOG_RESET bl watchdog_reset 70012771d8Swdenk #else 71012771d8Swdenk extern void watchdog_reset(void); 72012771d8Swdenk 73012771d8Swdenk #define WATCHDOG_RESET watchdog_reset 74012771d8Swdenk #endif 75012771d8Swdenk #else 76012771d8Swdenk /* 77012771d8Swdenk * No hardware or software watchdog. 78012771d8Swdenk */ 79012771d8Swdenk #if defined(__ASSEMBLY__) 80012771d8Swdenk #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/ 81012771d8Swdenk #else 82012771d8Swdenk #define WATCHDOG_RESET() {} 83012771d8Swdenk #endif /* __ASSEMBLY__ */ 84012771d8Swdenk #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */ 85012771d8Swdenk #endif /* CONFIG_HW_WATCHDOG */ 86012771d8Swdenk 87012771d8Swdenk /* 88012771d8Swdenk * Prototypes from $(CPU)/cpu.c. 89012771d8Swdenk */ 90012771d8Swdenk 91012771d8Swdenk /* MPC 8xx */ 92012771d8Swdenk #if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__) 93012771d8Swdenk void reset_8xx_watchdog(volatile immap_t *immr); 94012771d8Swdenk #endif 95012771d8Swdenk 960db5bca8Swdenk /* MPC 5xx */ 970db5bca8Swdenk #if defined(CONFIG_5xx) && !defined(__ASSEMBLY__) 980db5bca8Swdenk void reset_5xx_watchdog(volatile immap_t *immr); 990db5bca8Swdenk #endif 1000db5bca8Swdenk 101a21fb981SDetlev Zundel /* MPC 5xxx */ 102a21fb981SDetlev Zundel #if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__) 103a21fb981SDetlev Zundel void reset_5xxx_watchdog(void); 104a21fb981SDetlev Zundel #endif 105a21fb981SDetlev Zundel 1060c8721a4SWolfgang Denk /* AMCC 4xx */ 107012771d8Swdenk #if defined(CONFIG_4xx) && !defined(__ASSEMBLY__) 108012771d8Swdenk void reset_4xx_watchdog(void); 109012771d8Swdenk #endif 110012771d8Swdenk 111a6720762STom Rini /* Freescale i.MX */ 112a6720762STom Rini #if defined(CONFIG_IMX_WATCHDOG) && !defined(__ASSEMBLY__) 113a6720762STom Rini void hw_watchdog_init(void); 114a6720762STom Rini #endif 115012771d8Swdenk #endif /* _WATCHDOG_H_ */ 116