I thought people might like an update on this. AMD has been responding to a thread about the PSP on their subreddit; from what was said it sounds as though they are discussing internally how best to go about opening up the PSP and what those changes would involve from a technical & features standpoint. A few more details in that thread.
So; still no promises or timeline but personally I am encouraged - they are still discussing it several weeks later, and they are discussing what practical steps are needed. It is obviously going to take time but is at least being taken seriously and hasn't been dismissed out of hand. It is also great that they are willing to give updates on the process, even if at the moment that update is 'still working'.
Just wanted to share the news. As before - get in touch! Let AMD know we want this, that we're willing to put our money where our mouth is, and that they'd get a lot of support from the FLOSS and security communities with this change. Contact details below.
What is the PSP?
The Platform Security Processor (PSP) and its equivalent (Intel ME) is a little extra processor embedded in every chip AMD or Intel sells. It has access to memory & networking, the code can't be read and the PC won't run without it. It is a built-in backdoor to every modern PC. An excellent longer explanation here and video courtesy of u/RatherNott.
After a massive expression of interest, AMD recently indicated they will considering opening up the code and enabling Coreboot/Libreboot (open source boot software) so we can see what the PSP is doing and run without it. This would be a major positive for secure and FLOSS computing. Lots of people - e.g. Edward Snowden - want this to happen.
Contact AMD
AMD’s contact page (You can find details on AMD in your country)
Best number for North America: (877) 284-1566
You can also reach them on Facebook, and contact any media outlets you think might be interested.
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