FreeBSD on Dockstar: U-Boot / ubldr?

[Torfinn Ingolfsen]

I'm trying to set up a crochet config for the Seagate Dockstar.
(For some reason it seems like nobody has done this for Dockstar / Dreamplug already)
Anyway, my Dockstar currently uses the built-in U-Boot and loads the kernel directly off a FAT partition.
I see that the "modern" way to do it seems to be to load U-Boot and ubldr from a boot partition, then let ubldr figure out how to load the kernel and boot.
Show it be this way for Dockstar / Dreamplug too?

If so, does the Dockstar need a "special" version of U-Boot, like the RaspberryPi?
And how to set that up?
-- 
Torfinn Ingolfsen <torfinn.ingolfsen at getmail.no>