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s3c64xx: move the reset_cpu function

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Because of the reset_cpu is soc specific, should be move to soc
And read reset value from SYS_ID register instead of hard code
this patch also supports s3c6410

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Minkyu Kang 2009-06-25 19:21:33 +09:00 committed by Jean-Christophe PLAGNIOL-VILLARD
parent 576afd4fae
commit 6bde171a4c
3 changed files with 36 additions and 16 deletions
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16
cpu/arm1176/cpu.c
View file

@ -58,22 +58,6 @@ int cleanup_before_linux (void)
return 0;
}
/* * reset the cpu by setting up the watchdog timer and let him time out */
void reset_cpu (ulong ignored)
{
printf("reset... \n\n\n");
SW_RST_REG = 0x6400;
/* loop forever and wait for reset to happen */
while (1) {
if (serial_tstc()) {
serial_getc();
break;
}
}
/*NOTREACHED*/
}
/* flush I/D-cache */
static void cache_flush (void)
{

2
cpu/arm1176/s3c64xx/Makefile
View file

@ -28,6 +28,8 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).a
SOBJS = reset.o
COBJS-$(CONFIG_S3C6400) += cpu_init.o speed.o
COBJS-y += timer.o

34
cpu/arm1176/s3c64xx/reset.S Normal file
View file

@ -0,0 +1,34 @@
/*
* Copyright (c) 2009 Samsung Electronics.
* Minkyu Kang <mk7.kang@samsung.com>
*
* 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 <s3c6400.h>
.globl reset_cpu
reset_cpu:
ldr r1, =ELFIN_CLOCK_POWER_BASE
ldr r2, [r1, #SYS_ID_OFFSET]
ldr r3, =0xffff
and r2, r3, r2, lsr #12
str r2, [r1, #SW_RST_OFFSET]
_loop_forever:
b _loop_forever