/* * (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 */