| wdenk | affae2b | 2002-08-17 09:36:01 +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 | * W7O board level hardware watchdog. |
| 26 | */ |
| 27 | #include <common.h> |
| 28 | #include <config.h> |
| 29 | |
| 30 | #ifdef CONFIG_HW_WATCHDOG |
| 31 | #include <watchdog.h> |
| 32 | |
| 33 | void hw_watchdog_reset(void) |
| 34 | { |
| 35 | volatile ushort *hwd = (ushort *)(CFG_W7O_EBC_PB7CR & 0xfff00000); |
| 36 | |
| 37 | /* |
| 38 | * Read the LMG's hwd register and toggle the |
| 39 | * watchdog bit to reset it. On the LMC, just |
| 40 | * reading it is enough, but toggling the bit |
| 41 | * doen't hurt either. |
| 42 | */ |
| 43 | *hwd = *hwd ^ 0x8000; |
| 44 | |
| 45 | } /* hw_watchdog_reset() */ |
| 46 | |
| 47 | #endif /* CONFIG_HW_WATCHDOG */ |