src/southbridge/amd/sb800/reset.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2010 Advanced Micro Devices, Inc.
 *
 * 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; version 2 of the License.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef __PRE_RAM__
#define __PRE_RAM__ // Use simple device model for this file even in ramstage
#endif
#include <arch/io.h>
#include <reset.h>

#include <northbridge/amd/amdk8/reset_test.c>

void hard_reset(void)
{
	set_bios_reset();
	/* Try rebooting through port 0xcf9 */
	/* Actually it is not a real hard_reset --- it only reset coherent link table, but not reset link freq and width */
	outb((0 << 3) | (0 << 2) | (1 << 1), 0xcf9);
	outb((0 << 3) | (1 << 2) | (1 << 1), 0xcf9);
}