I need an explicit list of public keys corresponding to the hardware roots of trust. From the article and prior reading it seems to be the hardware vendor's. Or

I need an explicit list of public keys corresponding to the hardware roots of trust. From the article and prior reading it seems to be the hardware vendor's. Or are these in turn signed by Intel, AMD, ARM, ...? i.e. which public key is actually burnt in the processor's eFuses? A cryptographic break can always happen, and in such a cryptographically apocalyptic event i'd prefer to be able to author, sign and boot a minimal bootloader myself. Have people ever gathered such listings? EDIT: a secondary reason for maintaining such lists: key compromise can always happen, knowing when you need to replace your processor / computer because of a fundamental compromise would be mandatory. Also when buying hardware being able to observe historically compromised keys by vendor could give an indication of their security discipline.