[wtallis]

I'm not seeing where firmware.intel.com has any documentation for stuff that's lower-level than EFI modules and drivers. They've got a Firmware Support Package that "provides a binary package to initialize the processor, memory controller, and Intel chipset initialization functions", but only for some mobile and embedded platforms. Otherwise, they seem to just refer you to Phoenix, AMI, and friends so you can license their buggy stuff to build a custom GUI for. There's really not much benefit to the community in making it possible to build better EFI modules if you've got no way to integrate them into a usable replacement firmware for your existing hardware.