diff options
| -rw-r--r-- | src/drivers/generic/cbfs-serial/Kconfig | 6 | ||||
| -rw-r--r-- | src/drivers/generic/cbfs-serial/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/generic/cbfs-serial/cbfs-serial.c | 50 |
3 files changed, 57 insertions, 0 deletions
diff --git a/src/drivers/generic/cbfs-serial/Kconfig b/src/drivers/generic/cbfs-serial/Kconfig new file mode 100644 index 0000000000..209c242dba --- /dev/null +++ b/src/drivers/generic/cbfs-serial/Kconfig @@ -0,0 +1,6 @@ +config DRIVERS_GENERIC_CBFS_SERIAL + bool "Serial number in CBFS" + default n + help + Enable this option to read the board serial number from a + text file located in CBFS. diff --git a/src/drivers/generic/cbfs-serial/Makefile.inc b/src/drivers/generic/cbfs-serial/Makefile.inc new file mode 100644 index 0000000000..163d439ba9 --- /dev/null +++ b/src/drivers/generic/cbfs-serial/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_GENERIC_CBFS_SERIAL) += cbfs-serial.c diff --git a/src/drivers/generic/cbfs-serial/cbfs-serial.c b/src/drivers/generic/cbfs-serial/cbfs-serial.c new file mode 100644 index 0000000000..ee3e36620c --- /dev/null +++ b/src/drivers/generic/cbfs-serial/cbfs-serial.c @@ -0,0 +1,50 @@ +/* + * This file is part of the coreboot project. + * + * 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 <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}; + 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; +} |