What is the difference between this and https://github.com/tianocore/edk2

panick21_ · on June 15, 2023

This is the UEFI boot flow:

https://raw.githubusercontent.com/tianocore/tianocore.github...

Currently AMD provides AGESA, and that is basically PEI part of the diagram. EDK2 is more like the DXE so on.

OpenSIL will now replace AGESA in all AMD products and make that low level open source and serve as the PEI part.

OpenSIL will also enable not just UEFI flow, but also Coreboot/Linuxboot and other open source boot alternatives.

wmf · on June 14, 2023

This is low-level code specifically to initialize AMD Epyc processors. EDK2 is higher-level processor-independent firmware code. You need both to build usable firmware.