[RFC PATCH 0/4] Introduce global.bootm.root env var for booting via PARTUUID

[Robert Karszniewicz]

The problem is that we want to be able to have the rootfs and kernel on 
separate partitions. We've looked into the Boot Loader Specification, 
but from what we saw, it makes A-B systems difficult (according to the 
spec, there can only be one "$BOOT" filesystem on a device).

For reference: https://systemd.io/BOOT_LOADER_SPECIFICATION/