From affae2bff825c1a8d2cfeaf7b270188d251d39d2 Mon Sep 17 00:00:00 2001 From: wdenk Date: Sat, 17 Aug 2002 09:36:01 +0000 Subject: Initial revision --- board/w7o/watchdog.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 board/w7o/watchdog.c (limited to 'board/w7o/watchdog.c') diff --git a/board/w7o/watchdog.c b/board/w7o/watchdog.c new file mode 100644 index 0000000..3fca5d3 --- /dev/null +++ b/board/w7o/watchdog.c @@ -0,0 +1,48 @@ +/* + * (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 +#include + +#ifdef CONFIG_HW_WATCHDOG +#include + +void hw_watchdog_reset(void) +{ + volatile ushort *hwd = (ushort *)(CFG_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 */ + -- cgit v1.1