Actually I don’t think UEFI firmware validates the initramfs — that is loaded by the kernel’s efi stub. One can make a UKI image which glues the two together i

Actually I don’t think UEFI firmware validates the initramfs — that is loaded by the kernel’s efi stub. One can make a UKI image which glues the two together in a single file along with a tiny bit of code for booting it.