Copyright (c) 2003 Matthew N. Dodd <firstname.lastname@example.org> All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the docu...
NAMEvpd - Vital Product Data kernel interface
DESCRIPTIONIBM 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 ifconfig 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.model ) Machine model.
- (build.id ) BIOS Build ID.
- (serial.box ) Box Serial Number.
- (serial.planar ) Motherboard Serial Number.
- "TP General - Using the BIOS Build ID to identify IBM ThinkPad systems" "Reference #: MIGR-45120" "November 22, 2002"