/*
 * (C) Copyright 2008 Texas Insturments
 *
 * (C) Copyright 2002
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <mgroeger@sysgo.de>
 *
 * (C) Copyright 2002
 * Gary Jennejohn, DENX Software Engineering, <garyj@denx.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 <asm/system.h>
#include <asm/cache.h>
#ifndef CONFIG_L2_OFF
#include <asm/arch/sys_proto.h>
#include <asm/cache-l2x0.h>
#endif


int cleanup_before_linux(void)
{
	unsigned int i;

	/*
	 * this function is called just before we call linux
	 * it prepares the processor for linux
	 *
	 * we turn off caches etc ...
	 */	 
	 
	disable_interrupts();
#ifndef CONFIG_ICACHE_OFF
	/* turn off I/D-cache */
	icache_disable();
	icache_invalid();
	asm("isb");	
#endif
	
#ifndef CONFIG_DCACHE_OFF
	dcache_disable();
	asm("dsb");
#endif
		
//#ifndef CONFIG_ICAHCE_OFF
//	/* invalidate I-cache */
//	cache_flush();
//#else
//#ifndef CONFIG_DCACHE_OFF
//	cache_flush();
//#endif
//#endif

//#ifndef CONFIG_L2_OFF
//	/* turn off L2 cache */
//	l2_cache_disable();
//	/* invalidate L2 cache also */
//	invalidate_l2_cache();
//#endif
#ifndef CONFIG_L2_OFF
	l2_cache_disable();
	l2x0_clean_inv_all();
#endif
	
	i = 0;
	/* mem barrier to sync up things */
	asm("mcr p15, 0, %0, c7, c10, 4": :"r"(i));
	
/*#ifndef CONFIG_L2_OFF
	l2_cache_enable();
#endif
*/
	asm("dsb");
	asm("isb");	
	return 0;
}
/*
static void cache_flush(void)
{
	asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (0));
	}*/
