Julius Werner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/34367 )
Change subject: util: Add new util to make a payload for QEMU/AArch64 ......................................................................
Patch Set 2:
The LinuxBoot payload (if it wouldn't be broken right now on arm64), allows you to include any combination of kernel, DTS and initramfs. It's totally unrelated to u-root. The Linux payload is deprecated and LinuxBoot should be used instead.
Oh, I see. That's seems like unfortunate naming, though? If this is meant to be the default thing that all Linux kernel payloads use, it should probably just be called Linux (and if the existing payloads/external/linux doesn't do anything that can't be done better with the LinuxBoot one, we should remove it and maybe reuse that name?).
Anyway, if that's the case I agree that rather than adding this util, the functionality should be included in that payload.