There was someone in Canada, Dries Holtzhausen, who was going to do it
for his company, which makes embedded systems, but for unrelated
reasons that project was stopped.

Consequently, nobody is doing an ARM port (as far as I know). Clearly
a valuable thing to have.

Andy Tanenbaum

I am interested in working on an ARM port. But, I can start working on
it only from next month.
I think, during the initial stages of porting, we can use a simulator
like skyeye (http://www.skyeye.org).