projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| affae2bf WD |
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 | { | |
| 6d0f6bcf | 35 | volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000); |
| affae2bf WD |
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 */ |