I suggest that https://www.coreboot.org/Blob_Matrix to be linked in libreboot.org.
Probably not a bad idea, though that page seems rather incomplete.
@alyssa Thank you for your interest in this. Can you please edit https://www.coreboot.org/Blob_Matrix or fork it to libreboot.org?
There was work writing something like that (more targeted to Libreboot) in-tree. If someone else would like to pick that up, I'd appreciate it. Closing.
if you could link to that patch in-tree, I could look at it.