51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/*
|
|
* 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;
|
|
}
|