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| -rw-r--r-- | src/mainboard/purism/librem13v2/mainboard.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/mainboard/purism/librem13v2/mainboard.c b/src/mainboard/purism/librem13v2/mainboard.c new file mode 100644 index 0000000000..37a7a01132 --- /dev/null +++ b/src/mainboard/purism/librem13v2/mainboard.c @@ -0,0 +1,49 @@ +/* + * 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; +} |