My proposal is to start unit testing coreboot codebase to some possible extent, in order to improve its reliability, prepare subsystem for enabling quick tests and to make test-driven-development possible. Hopefully this makes sense to (at least some) of you.

For this purpose, it's necessary to select some C unit test framework - unless we want to create something completely new. I have done evaluation of couple of such libraries and described its results in the document [1] along with my selected candidate and implementation proposal. This may be a good starting point for a discussion about what framework do you think fit the most and how unit testing may be applied to coreboot codebase.