Yep, I’ve been posting a lot about this since I learned about the issue.
There are really only two solutions:
1) Use older x86 hardware. I’ve been playing with Libreboot on a Thinkpad X200.
2) Use non-x86 hardware. I’d love to get my hands on an old SPARC server. There’s also the POWER8 TALOS Secure Workstation.
I’m also interested in the TALOS workstation project. Looking forward to their progress!