| /* |
| * (C) Copyright 2001 |
| * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| /* |
| * W7O board level hardware watchdog. |
| */ |
| #include <common.h> |
| #include <config.h> |
| |
| #ifdef CONFIG_HW_WATCHDOG |
| #include <watchdog.h> |
| |
| void hw_watchdog_reset(void) |
| { |
| volatile ushort *hwd = (ushort *)(CONFIG_SYS_W7O_EBC_PB7CR & 0xfff00000); |
| |
| /* |
| * Read the LMG's hwd register and toggle the |
| * watchdog bit to reset it. On the LMC, just |
| * reading it is enough, but toggling the bit |
| * doen't hurt either. |
| */ |
| *hwd = *hwd ^ 0x8000; |
| |
| } /* hw_watchdog_reset() */ |
| |
| #endif /* CONFIG_HW_WATCHDOG */ |