src/mainboard/intel/harcuvar/spd/spd.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2014 Google Inc.
 * Copyright (C) 2015 - 2017 Intel Corporation.
 *
 * 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 <cbfs.h>
#include <console/console.h>

#include "spd.h"

/* Get SPD data for on-board memory */
uint8_t *mainboard_find_spd_data()
{
	uint8_t *spd_data;
	int spd_index;
	size_t spd_file_len;
	char *spd_file;

	spd_index = 0;

	spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD,
					   &spd_file_len);
	if (!spd_file)
		die("SPD data not found.");

	if (spd_file_len < ((spd_index + 1) * SPD_LEN)) {
		printk(BIOS_ERR,
		       "SPD index override to 0 due to incorrect SPD index.\n");
		spd_index = 0;
	}

	if (spd_file_len < SPD_LEN)
		die("Missing SPD data.");

	/* Assume same memory in both channels */
	spd_index *= SPD_LEN;
	spd_data = (uint8_t *)(spd_file + spd_index);

	/* Make sure a valid SPD was found */
	if (spd_data[0] == 0)
		die("Invalid SPD data.");

	return spd_data;
}