source: SVN/rincon/u-boot/board/w7o/watchdog.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 1.4 KB
Line 
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
33void hw_watchdog_reset(void)
34{
35    volatile ushort *hwd = (ushort *)(CFG_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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