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https://xff.cz/git/u-boot/
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51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/processor.h>
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#define WDT_BASE WTCNT
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static unsigned char cnt_read (void){
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return *((volatile unsigned char *)(WDT_BASE + 0x00));
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}
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static unsigned char csr_read (void){
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return *((volatile unsigned char *)(WDT_BASE + 0x04));
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}
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static void cnt_write (unsigned char value){
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while (csr_read() & (1 << 5)) {
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/* delay */
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}
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*((volatile unsigned short *)(WDT_BASE + 0x00))
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= ((unsigned short) value) | 0x5A00;
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}
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static void csr_write (unsigned char value){
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*((volatile unsigned short *)(WDT_BASE + 0x04))
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= ((unsigned short) value) | 0xA500;
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}
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int watchdog_init (void){ return 0; }
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void reset_cpu (unsigned long ignored)
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{
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while(1);
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}
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