tree 66bbc67ab7f2883bdb68febc245bec2db2cfcffa
parent 7ca6a40b95ddf4c221b4804e6f1e7bdb437d0c74
author laurenw-arm <lauren.wehrmeister@arm.com> 1715709086 -0500
committer laurenw-arm <lauren.wehrmeister@arm.com> 1717523732 -0500

feat(arm): add COT_DESC_IN_DTB option for Dualroot

Add support for BL2 to get the Dualroot chain of trust description
through the Firmware Configuration Framework (FCONF). This makes it
possible to export the part of the Dualroot chain of trust enforced by
BL2 in BL2's configuration file (TB_FW_CONFIG DTB file). BL2 will parse
it when setting up the platform.

The feature can be enabled through the COT_DESC_IN_DTB=1 option. The
default behavior (COT_DESC_IN_DTB=0) remains to hard-code the Dualroot
CoT into BL2 images.

Change-Id: I3497b1daf14be09b5ce3a74d39df7551819255c2
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>