AMD DRTM work released to the TrenchBoot project

[ross.ph...@oracle.com]

All,

This week AMD released its first version of the DRTM specification
publicly. This version can be found here:

https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/user-guides/58453.pdf

With the release of the document, Oracle is publishing all of its AMD
DRTM work based on the now public document. The bits are being pushed to
the TrenchBoot public repository and can be found here:

https://github.com/TrenchBoot/grub/tree/grub-sl-2.12-v11-amd

https://github.com/TrenchBoot/secure-kernel-loader/tree/skl-loader-amdsl-v11

https://github.com/TrenchBoot/linux/tree/linux-sl-master-9-12-24-v11-amd

This is the initial implementation that is working end to end on
Milan/Genoa systems tested on. The latest firmware is needed to ensure
DRTM support is present.

Thank you,
Ross Philipson