diff --git a/docs/design_documents/measured_boot_poc.rst b/docs/design_documents/measured_boot_poc.rst index 7f73d7e9b..7f9519e71 100644 --- a/docs/design_documents/measured_boot_poc.rst +++ b/docs/design_documents/measured_boot_poc.rst @@ -5,10 +5,10 @@ Measured Boot is the process of cryptographically measuring the code and critical data used at boot time, for example using a TPM, so that the security state can be attested later. -The current implementation of the driver included in Trusted Firmware-A -(TF-A) stores the measurements into a `TCG event log`_ in secure -memory. No other means of recording measurements (such as a discrete TPM) is -supported right now. +The current implementation of the driver included in |TF-A| supports several +backends and each has a different means to store the measurements. +This section focuses on the `TCG event log`_ backend, which stores measurements +in secure memory. The driver also provides mechanisms to pass the Event Log to normal world if needed.