| | 1 | /* |
| | 2 | * (C) Copyright 2001 |
| | 3 | * Erik Theisen, Wave 7 Optics, [email protected]. |
| | 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 *)(CONFIG_SYS_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 */ |
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