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- /*
- * 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>
- #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
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