commit a4ec9405f628ff27d1e515aed2ddd5055a744e31
author Bipin Ravi <biprav01@u203721.austin.arm.com> Tue Feb 27 17:49:12 2024 -0600
committer Bipin Ravi <biprav01@u203721.austin.arm.com> Wed Mar 06 13:57:02 2024 -0600
tree 42d8dd26c681c606c03ebb80a0c9a72cc3f72da1
parent 7ff274228e08b929600e673bce99f572f15131c0

fix(cpus): workaround for Cortex-A715 erratum 2331818

Cortex-A715 erratum 2331818 is a cat B erratum that applies to
revisions r0p0 and r1p0 and is fixed in r1p1. The workaround is to
set bit[20] of CPUACTLR2_EL1. Setting this bit is expected to have
a negligible performance impact.

SDEN can be found here:
https://developer.arm.com/documentation/SDEN2148827/latest

Change-Id: If3b1ed78b145ab6515cdd41135314350ed556381
Signed-off-by: Bipin Ravi <biprav01@u203721.austin.arm.com>

lib/cpus/cpu-ops.mk

diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 5bdd9e4..1c0b092 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -911,6 +911,10 @@
 # This erratum applies to revisions r0p0, r0p1. Fixed in r0p2.
 CPU_FLAG_LIST += ERRATA_V2_2801372
 
+# Flag to apply erratum 2331818 workaround during reset. This erratum applies
+# to revisions r0p0 and r1p0. It is fixed in r1p1.
+CPU_FLAG_LIST += ERRATA_A715_2331818
+
 # Flag to apply erratum 2420947 workaround during reset. This erratum applies
 # only to revision r1p0. It is fixed in r1p1.
 CPU_FLAG_LIST += ERRATA_A715_2420947