2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License as
4 * published by the Free Software Foundation; either version 2 of
5 * the License, or (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19 #include <asm/processor.h>
21 #define WDT_BASE WTCNT
23 static unsigned char cnt_read (void){
24 return *((volatile unsigned char *)(WDT_BASE + 0x00));
27 static unsigned char csr_read (void){
28 return *((volatile unsigned char *)(WDT_BASE + 0x04));
31 static void cnt_write (unsigned char value){
32 while (csr_read() & (1 << 5)) {
35 *((volatile unsigned short *)(WDT_BASE + 0x00))
36 = ((unsigned short) value) | 0x5A00;
39 static void csr_write (unsigned char value){
40 *((volatile unsigned short *)(WDT_BASE + 0x04))
41 = ((unsigned short) value) | 0xA500;
45 int watchdog_init (void){ return 0; }
47 void reset_cpu (unsigned long ignored)