Not a blog post, but one of the coreboot devs held a talk at 31C3 about one of those extra processors in AMD's architecture: http://media.ccc.de/browse/congress

Not a blog post, but one of the coreboot devs held a talk at 31C3 about one of those extra processors in AMD's architecture: http://media.ccc.de/browse/congress/2014/31c3_-_6103_-_en_-_saal_2_-_201412272145_-_amd_x86_smu_firmware_analysis_-_rudolf_marek.html http://media.ccc.de/browse/congress/2014/31c3_-_6103_-_en_-_...