Uncorrectable freedom and security issues on x86 platforms
"It has recently come to my attention that many in the free software movement are unaware of a relatively new development on x86 platforms that permanently removes the ability to use these platforms without also continually executing signed, proprietary code at the highest possible privilege level."
"All post-2013 (AMD) and virtually all post-2009 (Intel) systems contain this mandatory technology, and therefore, by design, can never be converted to run using pure FOSS. Prior to these changes projects such as coreboot could be used to replace the boot firmware with a FOSS alternative." ref