NAME¶
vpd —
Vital Product Data kernel
interface
SYNOPSIS¶
device vpd
DESCRIPTION¶
IBM ThinkPad notebooks (and most IBM desktop PCs) have a 48-byte Vital Product
Data (VPD) structure located in the BIOS Shadow RAM.
The VPD provides machine type and model information, the build ID (this is
roughly the BIOS version) and serial number information.
The
vpd driver scans the BIOS area and claims the memory used
by the VPD structure. It provides the
sysctl(3) branch
hw.vpd to allow this information to be accessed by the
userland. The following variables are provided, one per VPD attachment (there
should only be one):
MACHINE_TYPE
- (machine.type) Machine type.
MACHINE_MODEL
- (machine.model) Machine model.
BUILD_ID
- (build.id) BIOS Build ID.
SERIAL_BOX
- (serial.box) Box Serial Number.
SERIAL_PLANAR
- (serial.planar) Motherboard Serial
Number.
SEE ALSO¶
TP General - Using the BIOS Build ID to
identify IBM ThinkPad systems, Reference #:
MIGR-45120, November 22, 2002,
http://www.ibm.com/support/docview.wss?uid=psg1MIGR-45120.
HISTORY¶
The
vpd driver first appeared in
FreeBSD
5.1.
AUTHORS¶
The
vpd driver and this manual page were written by
Matthew N. Dodd
⟨mdodd@FreeBSD.org⟩.