| wdenk | 012771d | 2002-03-08 21:31:05 +0000 | [diff] [blame] | 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 | /* |
| 35 | * Hardware watchdog |
| 36 | */ |
| 37 | #ifdef CONFIG_HW_WATCHDOG |
| 38 | #if defined(__ASSEMBLY__) |
| 39 | #define WATCHDOG_RESET bl hw_watchdog_reset |
| 40 | #else |
| 41 | extern void hw_watchdog_reset(void); |
| 42 | |
| 43 | #define WATCHDOG_RESET hw_watchdog_reset |
| 44 | #endif /* __ASSEMBLY__ */ |
| 45 | #else |
| 46 | /* |
| 47 | * Maybe a software watchdog? |
| 48 | */ |
| 49 | #if defined(CONFIG_WATCHDOG) |
| 50 | #if defined(__ASSEMBLY__) |
| 51 | #define WATCHDOG_RESET bl watchdog_reset |
| 52 | #else |
| 53 | extern void watchdog_reset(void); |
| 54 | |
| 55 | #define WATCHDOG_RESET watchdog_reset |
| 56 | #endif |
| 57 | #else |
| 58 | /* |
| 59 | * No hardware or software watchdog. |
| 60 | */ |
| 61 | #if defined(__ASSEMBLY__) |
| 62 | #define WATCHDOG_RESET /*XXX DO_NOT_DEL_THIS_COMMENT*/ |
| 63 | #else |
| 64 | #define WATCHDOG_RESET() {} |
| 65 | #endif /* __ASSEMBLY__ */ |
| 66 | #endif /* CONFIG_WATCHDOG && !__ASSEMBLY__ */ |
| 67 | #endif /* CONFIG_HW_WATCHDOG */ |
| 68 | |
| 69 | /* |
| 70 | * Prototypes from $(CPU)/cpu.c. |
| 71 | */ |
| 72 | |
| 73 | /* MPC 8xx */ |
| 74 | #if (defined(CONFIG_8xx) || defined(CONFIG_MPC860)) && !defined(__ASSEMBLY__) |
| 75 | void reset_8xx_watchdog(volatile immap_t *immr); |
| 76 | #endif |
| 77 | |
| 78 | /* IBM 4xx */ |
| 79 | #if defined(CONFIG_4xx) && !defined(__ASSEMBLY__) |
| 80 | void reset_4xx_watchdog(void); |
| 81 | #endif |
| 82 | |
| 83 | /* MPC 8260 */ |
| 84 | #if defined(CONFIG_MPC8260) && !defined(__ASSEMBLY__) |
| 85 | #if defined(CONFIG_WATCHDOG) |
| 86 | extern __inline__ void |
| 87 | reset_8260_watchdog(volatile immap_t *immr) |
| 88 | { |
| 89 | immr->im_siu_conf.sc_swsr = 0x556c; |
| 90 | immr->im_siu_conf.sc_swsr = 0xaa39; |
| 91 | } |
| 92 | #endif /* !__ASSEMBLY__ && CONFIG_WATCHDOG */ |
| 93 | #endif /* CONFIG_MPC8260 && !__ASSEMBLY__ */ |
| 94 | |
| 95 | #endif /* _WATCHDOG_H_ */ |
| 96 | |