mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-08 13:53:21 +09:00
82 lines
1.8 KiB
ArmAsm
82 lines
1.8 KiB
ArmAsm
/*
|
|
* Processor reset using WDT for TI TMS320DM644x SoC.
|
|
*
|
|
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
|
|
*
|
|
* -----------------------------------------------------
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
.globl reset_cpu
|
|
reset_cpu:
|
|
ldr r0, WDT_TGCR
|
|
mov r1, $0x08
|
|
str r1, [r0]
|
|
ldr r1, [r0]
|
|
orr r1, r1, $0x03
|
|
str r1, [r0]
|
|
mov r1, $0
|
|
ldr r0, WDT_TIM12
|
|
str r1, [r0]
|
|
ldr r0, WDT_TIM34
|
|
str r1, [r0]
|
|
ldr r0, WDT_PRD12
|
|
str r1, [r0]
|
|
ldr r0, WDT_PRD34
|
|
str r1, [r0]
|
|
ldr r0, WDT_TCR
|
|
ldr r1, [r0]
|
|
orr r1, r1, $0x40
|
|
str r1, [r0]
|
|
ldr r0, WDT_WDTCR
|
|
ldr r1, [r0]
|
|
orr r1, r1, $0x4000
|
|
str r1, [r0]
|
|
ldr r1, WDTCR_VAL1
|
|
str r1, [r0]
|
|
ldr r1, WDTCR_VAL2
|
|
str r1, [r0]
|
|
/* Write an invalid value to the WDKEY field to trigger
|
|
* an immediate watchdog reset */
|
|
mov r1, $0x4000
|
|
str r1, [r0]
|
|
nop
|
|
nop
|
|
nop
|
|
nop
|
|
reset_cpu_loop:
|
|
b reset_cpu_loop
|
|
|
|
WDT_TGCR:
|
|
.word 0x01c21c24
|
|
WDT_TIM12:
|
|
.word 0x01c21c10
|
|
WDT_TIM34:
|
|
.word 0x01c21c14
|
|
WDT_PRD12:
|
|
.word 0x01c21c18
|
|
WDT_PRD34:
|
|
.word 0x01c21c1c
|
|
WDT_TCR:
|
|
.word 0x01c21c20
|
|
WDT_WDTCR:
|
|
.word 0x01c21c28
|
|
WDTCR_VAL1:
|
|
.word 0xa5c64000
|
|
WDTCR_VAL2:
|
|
.word 0xda7e4000
|