ref: 5ff1ec275223dc782ec8be5d219d7d3c7f53c2a9
dir: /sys/src/boot/honeycomb/boot.txt/
mw.b 0x80010000 0x0 0x10000
load ${devtype} ${devnum}:${bootpart} 0x80010000 ${prefix}plan9.ini
load ${devtype} ${devnum}:${bootpart} 0x80100000 ${prefix}9honeycomb.u && bootm 0x80100000