Well, commercial vendors usually use AMI's modified version that has a proprietary fancy setup UI and whatever other crap. But for hobbyist custom firmware (the

Well, commercial vendors usually use AMI's modified version that has a proprietary fancy setup UI and whatever other crap. But for hobbyist custom firmware (these ARM systems, Chromebooks, etc) completely raw upstream EDK2 is totally fine. Fun fact, System76 now runs slightly modified EDK2 (as a Coreboot payload) with a custom setup UI written in Rust: https://github.com/system76/firmware-setup https://github.com/system76/firmware-setup