Yes, it's called the Platform Security Processor: https://libreboot.org/faq.html#amd-platform-security-processor-psp https://libreboot.org/faq.html#amd-platform

Yes, it's called the Platform Security Processor: https://libreboot.org/faq.html#amd-platform-security-processor-psp https://libreboot.org/faq.html#amd-platform-security-process... The system won't boot without it.