1 /* 2 * (C) Copyright 2001 3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * Watchdog functions and macros. 10 */ 11 #ifndef _WATCHDOG_H_ 12 #define _WATCHDOG_H_ 13 14 #if !defined(__ASSEMBLY__) 15 /* 16 * Reset the watchdog timer, always returns 0 17 * 18 * This function is here since it is shared between board_f() and board_r(), 19 * and the legacy arch/<arch>/board.c code. 20 */ 21 int init_func_watchdog_reset(void); 22 #endif 23 24 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG) 25 #define INIT_FUNC_WATCHDOG_INIT init_func_watchdog_init, 26 #define INIT_FUNC_WATCHDOG_RESET init_func_watchdog_reset, 27 #else 28 #define INIT_FUNC_WATCHDOG_INIT 29 #define INIT_FUNC_WATCHDOG_RESET 30 #endif 31 32 #if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG) 33 # error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together." 34 #endif 35 36 /* 37 * Hardware watchdog 38 */ 39 #ifdef CONFIG_HW_WATCHDOG 40 #if defined(__ASSEMBLY__) 41 #define WATCHDOG_RESET bl hw_watchdog_reset 42 #else 43 extern void hw_watchdog_reset(void); 44 45 #define WATCHDOG_RESET hw_watchdog_reset 46 #endif /* __ASSEMBLY__ */ 47 #else 48 /* 49 * Maybe a software watchdog? 50 */ 51 #if defined(CONFIG_WATCHDOG) 52 #if defined(__ASSEMBLY__) 53 #define WATCHDOG_RESET bl watchdog_reset 54 #else 55 extern void watchdog_reset(void); 56 57 #define WATCHDOG_RESET watchdog_reset 58 #endif 59 #else 60 /* 61 * No hardware or software watchdog. 62 */ 63 #if defined(__ASSEMBLY__) 64 #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/ 65 #else 66 #define WATCHDOG_RESET() {} 67 #endif /* __ASSEMBLY__ */ 68 #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */ 69 #endif /* CONFIG_HW_WATCHDOG */ 70 71 /* 72 * Prototypes from $(CPU)/cpu.c. 73 */ 74 75 /* MPC 8xx */ 76 #if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__) 77 void reset_8xx_watchdog(volatile immap_t *immr); 78 #endif 79 80 /* MPC 5xx */ 81 #if defined(CONFIG_5xx) && !defined(__ASSEMBLY__) 82 void reset_5xx_watchdog(volatile immap_t *immr); 83 #endif 84 85 /* MPC 5xxx */ 86 #if defined(CONFIG_MPC5xxx) && !defined(__ASSEMBLY__) 87 void reset_5xxx_watchdog(void); 88 #endif 89 90 /* AMCC 4xx */ 91 #if defined(CONFIG_4xx) && !defined(__ASSEMBLY__) 92 void reset_4xx_watchdog(void); 93 #endif 94 95 #if defined(CONFIG_HW_WATCHDOG) && !defined(__ASSEMBLY__) 96 void hw_watchdog_init(void); 97 #endif 98 99 #if defined(CONFIG_MPC85xx) && !defined(__ASSEMBLY__) 100 void init_85xx_watchdog(void); 101 #endif 102 #endif /* _WATCHDOG_H_ */ 103