Indeed, and TPM + secure boot broadly define how these built-in firmware TPMs (fTPMs) implement verification and validation of system components. TPM is the sp

Indeed, and TPM + secure boot broadly define how these built-in firmware TPMs (fTPMs) implement verification and validation of system components. TPM is the specification and standard for a predictable way this is implemented, and most modern CPUs do this as you say, with option ROM validation, UEFI firmware integrity checking, etc.