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Overview: How UEFI Secure Boot Works in Linux
(tiffybelle.vivaldi.net)
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this post was submitted on 13 Oct 2023
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Booting the kernel directly via EFIStub from the firmware is certainly an interesting idea, although it sounds like a potential pain to manage updates. Will definitely take a look down that rabbit hole though. =)
I've been working on a tool to make management of EFI boot entries easier, specifically with the use case of booting Linux in mind.
https://github.com/cbarrick/efiboot
I haven't made a public release yet though... I really should.
At this point it's pretty well battle tested.
https://wiki.archlinux.org/title/EFISTUB