src/mainboard/via/epia-m850/romstage.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2011-2012  Alexandru Gagniuc <mr.nuke.me@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.
 */

/*
 * Inspired from the EPIA-M700
 */
#include <stdint.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <arch/io.h>
#include <device/pnp_def.h>
#include <arch/io.h>
#include <console/console.h>
#include <lib.h>
#include <cpu/x86/bist.h>
#include <cpu/amd/car.h>
#include <string.h>
#include <timestamp.h>

#include <northbridge/via/vx900/early_vx900.h>
#include <northbridge/via/vx900/raminit.h>
#include <superio/fintek/common/fintek.h>
#include <superio/fintek/f81865f/f81865f.h>

#define SERIAL_DEV PNP_DEV(0x4e, F81865F_SP1)

/* cache_as_ram.inc jumps to here. */
void main(unsigned long bist)
{
	u32 tolm;

	timestamp_init(timestamp_get());
	timestamp_add_now(TS_START_ROMSTAGE);

	/* First thing we need to do on the VX900, before anything else */
	vx900_enable_pci_config_space();

	/* Serial console is easy to take care of */
	fintek_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
	console_init();
	printk(BIOS_DEBUG, "Console initialized.\n");

	vx900_cpu_bus_interface_setup();

	/* Be smart. Get this info */
	vx900_print_strapping_info();
	/* DEVEL helper */
	vx900_disable_auto_reboot();
	/* Halt if there was a built-in self test failure. */
	report_bist_failure(bist);

	/* Oh, almighty, give us the SMBUS */
	enable_smbus();

	timestamp_add_now(TS_BEFORE_INITRAM);
	/* Now we can worry about raminit.
	 * This board only has DDR3, so no need to worry about which DRAM type
	 * to use */
	dimm_layout dimms = { {0x50, 0x51, SPD_END_LIST} };
	vx900_init_dram_ddr3(&dimms);
	timestamp_add_now(TS_AFTER_INITRAM);

	/* TODO: All these ram_checks are here to ensure we test most of the RAM
	 * below 4G. They should not be needed once VX900 raminit is stable */
	ram_check(0, 0x80);
	ram_check(512 << 10, 0x80);
	ram_check((1 << 20) - (1 << 10), 0x80);
	ram_check((1 << 24), 0x80);
	ram_check((512 + 256 - 1) << 20, 0x80);
	ram_check(0x80c0000, 0x80);
	tolm = ((pci_read_config16(MCU, 0x84) & 0xfff0) >> 4) << 20;
	if (tolm > (1 * (u32) GiB))
		ram_check(1024 << 10, 0x80);
	if (tolm > (2 * (u32) GiB))
		ram_check(2048 << 20, 0x80);

	printk(BIOS_DEBUG, "We passed RAM verify\n");

	/* We got RAM working, now we can write the timestamps to RAM */
#if CONFIG_EARLY_CBMEM_INIT
	cbmem_recovery(0);
#endif
	/* FIXME: See if this is needed or take this out please */
	/* Disable Memcard and SDIO */
	pci_mod_config8(LPC, 0x51, 0, (1 << 7) | (1 << 4));
}