mirror of
https://github.com/brain-hackers/u-boot-brain
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
56 lines
1010 B
ArmAsm
56 lines
1010 B
ArmAsm
/*
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* INCA-IP Watchdog timer management code.
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*
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* Copyright (c) 2003 Wolfgang Denk <wd@denx.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <asm/regdef.h>
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#define WD_BASE 0xb8000000
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#define WD_CON0(value) 0x0020(value)
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#define WD_CON1(value) 0x0024(value)
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#define WD_DISABLE 0x00000008
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#define WD_ENABLE 0x00000000
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#define WD_WRITE_PW 0xFFFC00F8
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#define WD_WRITE_ENDINIT 0xFFFC00F3
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#define WD_WRITE_INIT 0xFFFC00F2
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.globl disable_incaip_wdt
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disable_incaip_wdt:
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li t0, WD_BASE
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/* Calculate password.
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*/
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lw t2, WD_CON1(t0)
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and t2, 0xC
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lw t3, WD_CON0(t0)
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and t3, 0xFFFFFF01
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or t3, t2
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or t3, 0xF0
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sw t3, WD_CON0(t0) /* write password */
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/* Clear ENDINIT.
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*/
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li t1, WD_WRITE_INIT
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sw t1, WD_CON0(t0)
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li t1, WD_DISABLE
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sw t1, WD_CON1(t0) /* disable watchdog */
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li t1, WD_WRITE_PW
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sw t1, WD_CON0(t0) /* write password */
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li t1, WD_WRITE_ENDINIT
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sw t1, WD_CON0(t0) /* end command */
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jr ra
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nop
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