cbfs-serial.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <cbfs.h>
#include <device/device.h>
#include <smbios.h>
#include <string.h>
 
#define MAX_SERIAL_LENGTH 0x100
 
const char *smbios_mainboard_serial_number(void)
{
        static char serial_number[MAX_SERIAL_LENGTH + 1] = {0};
 
        if (serial_number[0] != 0)
                return serial_number;
 
        size_t serial_len = cbfs_load("serial_number", serial_number, MAX_SERIAL_LENGTH);
        if (serial_len) {
                serial_number[serial_len] = '\0';
                return serial_number;
        }
 
        strncpy(serial_number, CONFIG_MAINBOARD_SERIAL_NUMBER,
                        MAX_SERIAL_LENGTH);
 
        return serial_number;
}