Hello,
I have just committed a refined version of Martin's patch in r1830 that enables support for AMD Bolton-based chipsets. The addressees of this mail have reported different mainboards to be not working with flashrom because of its lack of Bolton support in the past. There might still be issues with individual board models but in general flashrom should work on Bolton-based devices from now on. If you test it on your board please report back any outcome (with a verbose log and the exact board model), thanks.