[fedora-arm] Re: fedora with MS signed Secure Boot

On Mon, 8 Sept 2025 at 16:51, Chris Adams via arm
<arm@lists.fedoraproject.org> wrote:
>
> Once upon a time, Udo Seidel <udoseidel@gmx.de> said:
> > I can say that MS has signed shims for other AArch64 distributions.
> > I tested Debian, Rocky Linux, Oracles OEL and SUSEs SLES as well as
> > openSUSE. BTW, the RHEL shim is only signed by Red Hat and not
> > co-signed by Microsoft.
>
> Okay, then that answers the "will MS do it" part. That's good to know.
> Then it's a matter of Fedora having time and resources to go through
> setting it all up and submitting shim (which is still a big hurdle).

They have been signing shim for some time, there was some requirements
around some security requirements but they were fixed well over 2
years ago.

> Most (all? not sure) Fedora AArch64 supported hardware uses u-boot,

No, that's incorrect, there's a LOT of enterprise hardware that
doesn't and has secure boot enabled and ready to go, as does Jetson
hardware and a number of other options.

> which might be impractical to use with Secure Boot; I'd guess each image
> would have to be signed, and I don't know if there's even board firmware
> that implements a Secure Boot loader anyway (so it'd be mostly useless
> for those platforms).

U-Boot upstream has supported UEFI secure boot for a while. I've been
meaning on looking into it and enrolling the Fedora keys into our
builds so it's there across all our officially supported devices.
--
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