commit 7fe0352d7c018e8762fbf0662e0def0a10ac13a7
author Sona Mathew <SonaRebecca.Mathew@arm.com> Fri Nov 18 18:05:38 2022 -0600
committer Sona Mathew <SonaRebecca.Mathew@arm.com> Fri May 05 13:23:10 2023 -0500
tree 92f18d3415c5f382a13a72fedac10b343796754d
parent 8a499ba5b9fffe32f3e5e4bce00e83cd747e9e37

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

Makefile

diff --git a/Makefile b/Makefile
index 7368ca5..21d65cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1163,6 +1163,7 @@
         SIMICS_BUILD \
         FEATURE_DETECTION \
 	TRNG_SUPPORT \
+	ERRATA_ABI_SUPPORT \
 	CONDITIONAL_CMO \
 )))
 
@@ -1295,6 +1296,7 @@
         TRUSTED_BOARD_BOOT \
         CRYPTO_SUPPORT \
         TRNG_SUPPORT \
+        ERRATA_ABI_SUPPORT \
         USE_COHERENT_MEM \
         USE_DEBUGFS \
         ARM_IO_IN_DTB \