when built without firmware, check that the chip already has firmware before trying to boot it, so we can explain why it's not working rather than printing cryptic errors.
when built without firmware, check that the chip already has firmware
before trying to boot it, so we can explain why it's not working rather
than printing cryptic errors.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars