Hello, Anyone interested in the quest for coreboot on a Intel Laptop may be interested in this doc.
http://intellinuxgraphics.org/ACPI_IGD_OpRegion_%20Spec.pdf
It tells how to control laptop lids and blacklight control through ACPI as well as other Intel graphics mysteries including the VBT, LVDS, tv-out, etc. Just thought anyone looking to implement coreboot on an Intel Laptop this would be a key tool.