tree 12a000ac489f2d39694b12c9f5f346744b9312fe
parent 1fdc9797f32c711c35a8a61a591607c8fa8a5468
author Sona Mathew <SonaRebecca.Mathew@arm.com> 1668816338 -0600
committer Okash Khawaja <okash@google.com> 1685468155 +0100

feat(errata_abi): errata management firmware interface

This patch adds the errata management firmware interface for lower ELs
to discover details about CPU erratum. Based on the CPU erratum
identifier the interface enables the OS to find the mitigation of an
erratum in EL3.

The ABI can only be present in a system that is compliant with SMCCCv1.1
or higher. This implements v1.0 of the errata ABI spec.

For details on all possible return values, refer the design
documentation below:

ABI design documentation:
https://developer.arm.com/documentation/den0100/1-0?lang=en

Signed-off-by: Sona Mathew <SonaRebecca.Mathew@arm.com>
Change-Id: I70f0e2569cf92e6e02ad82e3e77874546232b89a
(cherry picked from commit ffea3844c00daf8dee466840a4932cac04b3eb57)