mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 10:48:51 +00:00
ad7e8aac69
move s3c44b0 to arch_cpu_init and as noone use cpu_init remove it Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Marius Groeger <mgroeger@sysgo.de>
|
|
*
|
|
* (C) Copyright 2002
|
|
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
|
|
* Alex Zuepke <azu@sysgo.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
|
|
*/
|
|
|
|
/*
|
|
* CPU specific code
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <clps7111.h>
|
|
#include <asm/hardware.h>
|
|
#include <asm/system.h>
|
|
|
|
#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
|
|
static void cache_flush(void);
|
|
#endif
|
|
|
|
int cleanup_before_linux (void)
|
|
{
|
|
/*
|
|
* this function is called just before we call linux
|
|
* it prepares the processor for linux
|
|
*
|
|
* we turn off caches etc ...
|
|
* and we set the CPU-speed to 73 MHz - see start.S for details
|
|
*/
|
|
|
|
#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
|
|
disable_interrupts ();
|
|
|
|
/* turn off I-cache */
|
|
icache_disable();
|
|
dcache_disable();
|
|
|
|
/* flush I-cache */
|
|
cache_flush();
|
|
#ifdef CONFIG_ARM7_REVD
|
|
/* go to high speed */
|
|
IO_SYSCON3 = (IO_SYSCON3 & ~CLKCTL) | CLKCTL_73;
|
|
#endif
|
|
#elif defined(CONFIG_NETARM) || defined(CONFIG_S3C4510B) || defined(CONFIG_LPC2292)
|
|
disable_interrupts ();
|
|
/* Nothing more needed */
|
|
#elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
|
|
/* No cleanup before linux for IntegratorAP/CM720T as yet */
|
|
#else
|
|
#error No cleanup_before_linux() defined for this CPU type
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_IMPA7) || defined(CONFIG_EP7312) || defined(CONFIG_ARMADILLO)
|
|
/* flush I/D-cache */
|
|
static void cache_flush (void)
|
|
{
|
|
unsigned long i = 0;
|
|
|
|
asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
|
|
}
|
|
#elif defined(CONFIG_INTEGRATOR) && defined(CONFIG_ARCH_INTEGRATOR)
|
|
/* No specific cache setup for IntegratorAP/CM720T as yet */
|
|
void icache_enable (void)
|
|
{
|
|
}
|
|
#endif
|