How can I utilize pureboot restricted boot on any linux distro?

[FranklyFlawless]

@jonathon.hall

I do not know that answer, but you may be interested in a related topic with another user configuring Gentoo Linux with PureBoot on their Librem 14:

What's the boot process of the Librem 14 with Heads?

I’m putting together a Gentoo system on my Librem 14, and I want to use the Librem Key to unlock the LUKS volume on boot. That part I think I have the details on, as I poked around for docs. It’s the architectural angle I’m struggling with. Given that this is Gentoo, I’m experienced enough to know how to get out of technical problems when I have them, but it’s not totally clear to me what my boot process needs to look like, versus what the Librem 14’s PureBoot setup is like. The way I understa…