Originally posted by DoMiNeLa10
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UEFI upstream, the Tianocore project, is free and opensource (with a permissive license) already. (I call it "upstream" because in multiple instances the UEFI bugs in vendor firmware were exactly the same as Tianocore bugs)
OEMs buy commercial SDKs based on it and only integrate it with their hardware design. They don't want to invest the money into making their own firmware stack.
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