On 5/12/23 07:43, Matthew Garrett wrote:
On Thu, May 04, 2023 at 02:50:22PM +0000, Ross Philipson wrote:
The Secure Launch MLE environment uses PCRs that are only accessible from
the DRTM locality 2. By default the TPM drivers always initialize the
locality to 0. When a Secure Launch is in progress, initialize the
locality to 2.
This looks correct in itself, but looking at the CRB driver code I don't
think locality support is actually implemented. Are there any SL systems
using CRB?
We have never seen a system that supports CRB other than some firmware
TPMs that don't work with TXT in the first place. CRB is unexplored
territory at this point.
Thanks
Ross
