I did a search around and found something called "SmartStart", Apparently it's a bootable "configuration" utility for your system that configures various settings in NVRAM.
http://www.umpquanet.com/support/freebsd_setup.html --FreeBSD articble related to your system... ftp://ftp.compaq.com/pub/products/Servers/supportsoftware/ZIP/ --Search for smartstart. http://people.freebsd.org/~jcagle/ --Random FreeBSD management utilties.. (Perhaps can be ported?). I also noticed a Linux diff releated to "ACPI"... apparently ACPI it was forced or something. -Nix Fan.