1
0
mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2024-11-28 07:44:41 +02:00
openwrt-xburst/package/uboot-ifxmips/files/cpu/mips/danube/incaip_wdt.S
nbd 240bf1625e move ifxmips uboot to package/
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11601 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-06-28 19:53:41 +00:00

76 lines
1.8 KiB
ArmAsm

/*
* INCA-IP Watchdog timer management code.
*
* Copyright (c) 2003 Wolfgang Denk <wd@denx.de>
*
* 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
*/
#include <config.h>
#include <version.h>
#include <asm/regdef.h>
#ifdef CONFIG_INCA_IP
#define WD_BASE 0xb8000000
#define WD_CON0(value) 0x0020(value)
#define WD_CON1(value) 0x0024(value)
#define WD_DISABLE 0x00000008
#define WD_ENABLE 0x00000000
#define WD_WRITE_PW 0xFFFC00F8
#define WD_WRITE_ENDINIT 0xFFFC00F3
#define WD_WRITE_INIT 0xFFFC00F2
.globl disable_incaip_wdt
disable_incaip_wdt:
li t0, WD_BASE
/* Calculate password.
*/
lw t2, WD_CON1(t0)
and t2, 0xC
lw t3, WD_CON0(t0)
and t3, 0xFFFFFF01
or t3, t2
or t3, 0xF0
sw t3, WD_CON0(t0) /* write password */
/* Clear ENDINIT.
*/
li t1, WD_WRITE_INIT
sw t1, WD_CON0(t0)
li t1, WD_DISABLE
sw t1, WD_CON1(t0) /* disable watchdog */
li t1, WD_WRITE_PW
sw t1, WD_CON0(t0) /* write password */
li t1, WD_WRITE_ENDINIT
sw t1, WD_CON0(t0) /* end command */
j ra
nop
#endif /* CONFIG_INCA_IP */