netbsd-9, boot, EFI and device tree

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hello,
I'm starting a new project with an Olimex A20 lime2 board.
Up to now I used the old way of loading the kenrel from u-boot, where I can
also pass kernel command line and device tree blobs.
I though that for this new projet I would start with a fresh install,
and so with EFI. But I didn't find much informations about it.

What is the way to load a specific device tree, and set some kernel
boot options ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--