Resurrecting orion target

I'd like to resurrect the orion target and am looking for advice as I start. Recently the IXP4xx was resurrected and am wondering if the pull requests for that effort are a good example to follow for the orion target?
I'm also wondering if it would make sense to re-name the kirkwood target to something like marvell armel and have sub-targets for kirkwood, orion and eventually avanta (which will first need to be added to mainline linux)?