Those armv6 images usually work fine on ARM v7 devices. If you want a quick-to-try image of a BSDish distro, then go to NAS4free.org. They have ready-to-use images for the Rpi and Rpi2. They have a source tarball that does a completely menu driven kernel and userland build process. It also builds an SD image. I can't personally vouch for the reliability or security situation WRT those images - but they do run "out of the box" very easily.
The menu-driven build process is slick! The only thing to remember is to change the ROOTDIR in make.sh:
Code:
NAS4FREE_ROOTDIR="/usr/home/jake/nas4free-code"
I've put slightly more detailed setup info at:
https://programmingmiscellany.wordpr...-building-nas/
There are multiple Raspberry PI images on the site, but their build system makes it easy to create your own image, if you want to. To build an SD image using their build system you'd first have to bootstrap with one of their prepared images, and build the new image on the Rpi (or other target device). They haven't made it cross-compile yet, although that shouldn't be too difficult to do yourself.