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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2004 Stefan Reinauer
* Copyright (C) 2018 Patrick Rudolph <siro@das-labor.org>
*
* 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 <arch/cpu.h>
#include <stdint.h>
#include <cbmem.h>
#include <console/console.h>
#include <cpu/intel/romstage.h>
#include <timestamp.h>
#include <southbridge/intel/i82801ix/i82801ix.h>
#include <program_loading.h>
#include <device/pci_ops.h>
#define D0F0_PCIEXBAR_LO 0x60
static void mainboard_machine_check(void)
{
/* Check that MCFG is active. If it's not qemu was started for machine PC */
if (!CONFIG(BOOTBLOCK_CONSOLE) &&
(pci_read_config32(PCI_DEV(0, 0, 0), D0F0_PCIEXBAR_LO) !=
(CONFIG_MMCONF_BASE_ADDRESS | 1)))
die("You must run qemu for machine Q35 (-M q35)");
}
asmlinkage void car_stage_entry(void)
{
struct postcar_frame pcf;
i82801ix_early_init();
console_init();
mainboard_machine_check();
cbmem_recovery(0);
timestamp_add_now(TS_START_ROMSTAGE);
if (postcar_frame_init(&pcf, 0))
die("Unable to initialize postcar frame.\n");
/**
* Run postcar to tear down CAR and load relocatable ramstage.
* There's no CAR on qemu, but for educational purposes and
* testing the postcar stage is used on qemu, too.
*/
run_postcar_phase(&pcf);
}
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