* Let AMD know that open-sourcing/disabling PSP is important to you [1].
* Contribute to RISC-V. You can buy a RISC-V SoC today [2]. Does your favorite compiler have a RISC-V backend?
[1] https://www.reddit.com/r/linux/comments/5xvn4i/update_corebo... [2] https://www.sifive.com/products/hifive1/
https://www.reddit.com/r/Amd/comments/6krg13/has_there_been_...
If AMD really wanted to, they would have announced something by now. I can commend the AMD rep who continues to push for it, but he can't dictate company policy.