1 /* 2 * (C) Copyright 2001 3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 /* 25 * Watchdog functions and macros. 26 */ 27 #ifndef _WATCHDOG_H_ 28 #define _WATCHDOG_H_ 29 30 #if defined(CONFIG_HW_WATCHDOG) && defined(CONFIG_WATCHDOG) 31 # error "Configuration error: CONFIG_HW_WATCHDOG and CONFIG_WATCHDOG can't be used together." 32 #endif 33 34 #if defined(__ASSEMBLY__) && defined(__NIOS__) 35 # error "Configuration error: WATCHDOG_RESET inside assembler not supported for Nios platforms." 36 #endif 37 38 /* 39 * Hardware watchdog 40 */ 41 #ifdef CONFIG_HW_WATCHDOG 42 #if defined(__ASSEMBLY__) 43 #define WATCHDOG_RESET bl hw_watchdog_reset 44 #else 45 extern void hw_watchdog_reset(void); 46 47 #define WATCHDOG_RESET hw_watchdog_reset 48 #endif /* __ASSEMBLY__ */ 49 #else 50 /* 51 * Maybe a software watchdog? 52 */ 53 #if defined(CONFIG_WATCHDOG) 54 #if defined(__ASSEMBLY__) 55 #define WATCHDOG_RESET bl watchdog_reset 56 #else 57 extern void watchdog_reset(void); 58 59 #define WATCHDOG_RESET watchdog_reset 60 #endif 61 #else 62 /* 63 * No hardware or software watchdog. 64 */ 65 #if defined(__ASSEMBLY__) 66 #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/ 67 #else 68 #define WATCHDOG_RESET() {} 69 #endif /* __ASSEMBLY__ */ 70 #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */ 71 #endif /* CONFIG_HW_WATCHDOG */ 72 73 /* 74 * Prototypes from $(CPU)/cpu.c. 75 */ 76 77 /* MPC 8xx */ 78 #if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__) 79 void reset_8xx_watchdog(volatile immap_t *immr); 80 #endif 81 82 /* MPC 5xx */ 83 #if defined(CONFIG_5xx) && !defined(__ASSEMBLY__) 84 void reset_5xx_watchdog(volatile immap_t *immr); 85 #endif 86 87 /* AMCC 4xx */ 88 #if defined(CONFIG_4xx) && !defined(__ASSEMBLY__) 89 void reset_4xx_watchdog(void); 90 #endif 91 92 #endif /* _WATCHDOG_H_ */ 93