(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.
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.