I don't recall the following Intel document being advertised on the list, at least recently.
http://download.intel.com/design/intarch/papers/323246.pdf
Minimal Intel Architecture Boot Loader
Bare Bones Functionality Required for Booting an Intel Architecture Platform
If a developer wants to write their own BIOS on IA architecture, then they have to gather the appropriate documents (which aren’t always known) and guess the order that the items listed must be done in.
There currently isn’t one document that describes all the items that need to be done in one place, nor is the order of initialization described anywhere.
There are also many legacy devices that must be initialized and finding documentation on them is challenging.
This document is an attempt to document the order, the minimum steps required, and generate a central repository of the various documents that contain the technical details of each technology / component of a typical platform.