/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007 Advanced Micro Devices, Inc.
 * Copyright (C) 2011 Mark Norman <mpnorman@gmail.com>
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

/* Based on romstage.c from AMD's DB800 mainboard. */

#include <stdint.h>
#include <stdlib.h>
#include <device/pci_def.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <arch/hlt.h>
#include <console/console.h>
#include "cpu/x86/bist.h"
#include "cpu/x86/msr.h"
#include <cpu/amd/lxdef.h>
#include "southbridge/amd/cs5536/cs5536.h"
#include <spd.h>
#include "southbridge/amd/cs5536/early_smbus.c"
#include "southbridge/amd/cs5536/early_setup.c"
#include "superio/smsc/smscsuperio/early_serial.c"

#define SERIAL_DEV PNP_DEV(0x4e, SMSCSUPERIO_SP1)

static inline int spd_read_byte(unsigned int device, unsigned int address)
{
	if (device != DIMM0)
		return 0xFF;	/* No DIMM1, don't even try. */

	return smbus_read_byte(device, address);
}

#include "northbridge/amd/lx/raminit.h"
#include "northbridge/amd/lx/pll_reset.c"
#include "northbridge/amd/lx/raminit.c"
#include "lib/generic_sdram.c"
#include "cpu/amd/geode_lx/cpureginit.c"
#include "cpu/amd/geode_lx/syspreinit.c"
#include "cpu/amd/geode_lx/msrinit.c"

void main(unsigned long bist)
{
	static const struct mem_controller memctrl[] = {
		{.channel0 = {DIMM0, DIMM1}}
	};

	SystemPreInit();
	msr_init();

	cs5536_early_setup();

	/* Note: must do this AFTER the early_setup! It is counting on some
	 * early MSR setup for CS5536.
	 */
	smscsuperio_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
	console_init();

	/* Halt if there was a built in self test failure */
	report_bist_failure(bist);

	pll_reset();

	cpuRegInit(0, DIMM0, DIMM1, DRAM_TERMINATED);

	sdram_initialize(1, memctrl);

	/* Memory is setup. Return to cache_as_ram.inc and continue to boot. */
}