Automated Distributed Test System for coreboot: A Google Summer of Code 2013 project at coreboot. Original proposal: http://www.google-melange.com/gsoc/project/details/google/gsoc2013/ayush3504/5665319561461760
Please see documentation to see how it is implemented: https://github.com/ayushsagar/coreboot-ADTS/blob/master/Documentation/test%20interfaces%20for%20CADTS.pdf