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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Purism SPC
*
* 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 <smbios.h>
#include <string.h>
#include <cbfs.h>
#define MAX_SERIAL_LENGTH 0x100
const char *smbios_mainboard_serial_number(void)
{
static char serial_number[MAX_SERIAL_LENGTH + 1] = {0};
struct cbfsf file;
if (serial_number[0] != 0)
return serial_number;
if (cbfs_boot_locate(&file, "serial_number", NULL) == 0) {
struct region_device cbfs_region;
size_t serial_len;
cbfs_file_data(&cbfs_region, &file);
serial_len = region_device_sz(&cbfs_region);
if (serial_len <= MAX_SERIAL_LENGTH) {
if (rdev_readat(&cbfs_region, serial_number, 0,
serial_len) == serial_len) {
serial_number[serial_len] = 0;
return serial_number;
}
}
}
strncpy(serial_number, CONFIG_MAINBOARD_SERIAL_NUMBER,
MAX_SERIAL_LENGTH);
return serial_number;
}
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