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davinci, c6x: Always use C version of reset code

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We can safely use the same reset code written in C for both Davinci and
C6X platforms.  In addition the C version of the code is marginally
smaller on Davinci.

Tested-by: Matt Porter <mporter@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Tom Rini 2012-06-27 05:27:05 +00:00 committed by Albert ARIBAUD
parent d43950463c
commit 77bfa6b436
3 changed files with 34 additions and 84 deletions
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4
arch/arm/cpu/arm926ejs/davinci/Makefile
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@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).o
COBJS-y += cpu.o misc.o timer.o psc.o pinmux.o
COBJS-y += cpu.o misc.o timer.o psc.o pinmux.o reset.o
COBJS-$(CONFIG_DA850_LOWLEVEL) += da850_lowlevel.o
COBJS-$(CONFIG_SOC_DM355) += dm355.o
COBJS-$(CONFIG_SOC_DM365) += dm365.o
@ -42,8 +42,6 @@ COBJS-$(CONFIG_SOC_DM365) += dm365_lowlevel.o
COBJS-$(CONFIG_SOC_DA8XX) += da850_lowlevel.o
endif
SOBJS = reset.o
ifndef CONFIG_SKIP_LOWLEVEL_INIT
SOBJS += lowlevel_init.o
endif

81
arch/arm/cpu/arm926ejs/davinci/reset.S
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@ -1,81 +0,0 @@
/*
* 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

33
arch/arm/cpu/arm926ejs/davinci/reset.c Normal file
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@ -0,0 +1,33 @@
/*
* Processor reset using WDT.
*
* Copyright (C) 2012 Dmitry Bondar <bond@inmys.ru>
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* This file is released under the terms of GPL v2 and any later version.
* See the file COPYING in the root directory of the source tree for details.
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/timer_defs.h>
#include <asm/arch/hardware.h>
void reset_cpu(unsigned long a)
{
struct davinci_timer *const wdttimer =
(struct davinci_timer *)DAVINCI_TIMER1_BASE;
writel(0x08, &wdttimer->tgcr);
writel(readl(&wdttimer->tgcr) | 0x03, &wdttimer->tgcr);
writel(0, &wdttimer->tim12);
writel(0, &wdttimer->tim34);
writel(0, &wdttimer->prd12);
writel(0, &wdttimer->prd34);
writel(readl(&wdttimer->tcr) | 0x40, &wdttimer->tcr);
writel(readl(&wdttimer->wdtcr) | 0x4000, &wdttimer->wdtcr);
writel(0xa5c64000, &wdttimer->wdtcr);
writel(0xda7e4000, &wdttimer->wdtcr);
writel(0x4000, &wdttimer->wdtcr);
while (1)
/*nothing*/;
}