Comment 31 for bug 1865515

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Steve Langasek (vorlon) wrote : Re: [Bug 1865515] Re: Chainbooting from grub over the network to local shim breaks chain of trust

On Thu, Sep 10, 2020 at 01:59:14PM -0000, Dimitri John Ledkov wrote:
> So what is the order of boot?

> (FW) -> grubnet -> shim (local) -> grub (local) ? I don't think that
> would work, given that grubnet doesn't know how to validate shim,
> without shim protocol installed.

> I thought the chain must be (FW) -> shim -> grubnet -> shim (local) ->
> grub (local). But I'm not sure how to netboot remote shim.

That *is* what is being done in MAAS. And Julian reports success booting to
the local shim+grub, so he must be doing the same.