u-boot/arch/arm/cpu/sa1100/cpu.c
Wolfgang Denk 1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00

54 lines
918 B
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>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* CPU specific code
*/
#include <common.h>
#include <command.h>
#include <asm/system.h>
#ifdef CONFIG_USE_IRQ
DECLARE_GLOBAL_DATA_PTR;
#endif
static void cache_flush(void);
int cleanup_before_linux (void)
{
/*
* this function is called just before we call linux
* it prepares the processor for linux
*
* just disable everything that can disturb booting linux
*/
disable_interrupts ();
/* turn off I-cache */
icache_disable();
dcache_disable();
/* flush I-cache */
cache_flush();
return (0);
}
/* flush I/D-cache */
static void cache_flush (void)
{
unsigned long i = 0;
asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
}