commit 512c2365f75b2b10c0ca0ba32b512dbc1cd52341
author Arvind Ram Prakash <arvind.ramprakash@arm.com> Fri Dec 08 20:19:58 2023 -0600
committer Arvind Ram Prakash <arvind.ramprakash@arm.com> Mon Dec 18 14:04:26 2023 -0600
tree b51acf5eda82bac087d0dbedd46f9eb79d0f2b8c
parent b975aad14da84e5531ef04095b201671a73645c5

fix(cpus): workaround for Cortex-A520 erratum 2858100

Cortex-A520 erratum 2858100 is a Cat B erratum that applies to
all revisions <=r0p1 and is still open. The workaround is to
set bit[29] of CPUACTLR_EL1.

SDEN Documentation:
https://developer.arm.com/documentation/SDEN-2444153/latest

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I5a07163f919352583b03328abd5659bf7b268677

lib/cpus/cpu-ops.mk

diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 68d6ef8..302f697 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -847,6 +847,10 @@
 # to revisions r0p0, r0p1 of the Cortex-A520 cpu and is still open.
 CPU_FLAG_LIST += ERRATA_A520_2630792
 
+# Flag to apply erratum 2858100 workaround during reset. This erratum
+# applies to revision r0p0 and r0p1 of the Cortex-A520 cpu and is still open.
+CPU_FLAG_LIST += ERRATA_A520_2858100
+
 # Flag to apply erratum 2331132 workaround during reset. This erratum applies
 # to revisions r0p0, r0p1 and r0p2. It is still open.
 CPU_FLAG_LIST += ERRATA_V2_2331132