Libreboot X200 laptop now FSF-certified to respect your freedom

I'd assume by not loading them, and pretending that the CPU microcode doesn't exist. (the default one is hidden away inside the cpu, it's therefore "freedom preserving", while a microcode update is forbidden, because it's too easy to see.)

Although...the removal of the default bios here maybe indicates that the out-of-sight-out-of-mind view of the world is changing?