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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2011 Kyösti Mälkki <kyosti.malkki@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; 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.
*/
#include <stdint.h>
#include <device/pci_def.h>
#include <arch/io.h>
#include <arch/cpu.h>
#include <stdlib.h>
#include <console/console.h>
#include <cpu/x86/bist.h>
#include <cpu/intel/romstage.h>
#include <southbridge/intel/i82801dx/i82801dx.h>
#include <northbridge/intel/e7505/raminit.h>
#include <device/pnp_def.h>
#include <superio/smsc/lpc47m10x/lpc47m10x.h>
#define SERIAL_DEV PNP_DEV(0x2e, LPC47M10X2_SP1)
int spd_read_byte(unsigned device, unsigned address)
{
return smbus_read_byte(device, address);
}
void mainboard_romstage_entry(unsigned long bist)
{
static const struct mem_controller memctrl[] = {
{
.d0 = PCI_DEV(0, 0, 0),
.d0f1 = PCI_DEV(0, 0, 1),
.channel0 = { 0x50, 0x52, 0, 0 },
.channel1 = { 0x51, 0x53, 0, 0 },
},
};
// Get the serial port running and print a welcome banner
lpc47m10x_enable_serial(SERIAL_DEV, CONFIG_TTYS0_BASE);
console_init();
// Halt if there was a built in self test failure
report_bist_failure(bist);
// If this is a warm boot, some initialization can be skipped
if (!e7505_mch_is_ready()) {
enable_smbus();
/* The real MCH initialisation. */
e7505_mch_init(memctrl);
/*
* ECC scrub invalidates cache, so all stack in CAR
* is lost. Only return addresses from main() and
* scrub_ecc() are recovered to stack via xmm0-xmm3.
*/
#if CONFIG_HW_SCRUBBER
#if !CONFIG_USBDEBUG_IN_ROMSTAGE
unsigned long ret_addr = (unsigned long)((unsigned long*)&bist - 1);
e7505_mch_scrub_ecc(ret_addr);
#endif
#endif
/* Hook for post ECC scrub settings and debug. */
e7505_mch_done(memctrl);
}
printk(BIOS_DEBUG, "SDRAM is up.\n");
}
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