fix(cpus): workaround for Cortex-A715 erratum 3699560
Cortex-A715 erratum 3699560 that applies to all revisions <= r1p3
and is still Open.
The workaround is for EL3 software that performs context save/restore
on a change of Security state to use a value of SCR_EL3.NS when
accessing ICH_VMCR_EL2 that reflects the Security state that owns the
data being saved or restored.
SDEN documentation:
https://developer.arm.com/documentation/SDEN-2148827/latest/
Change-Id: I183aa921b4b6f715d64eb6b70809de2566017d31
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 81ce131..0e5e24c 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -989,6 +989,11 @@
# only to revision r0p0, r1p0 and r1p1. It is fixed in r1p2.
CPU_FLAG_LIST += ERRATA_A715_2728106
+# Flag to apply erratum 3699560 workaround during context save/restore of
+# ICH_VMCR_EL2 reg. This erratum applies to revisions r0p0, r1p0, r1p2, r1p3
+# of the Cortex-A715 cpu and is still open.
+CPU_FLAG_LIST += ERRATA_A715_3699560
+
# Flag to apply erratum 2792132 workaround during reset. This erratum applies
# to revisions r0p0 and r0p1. It is fixed in r0p2.
CPU_FLAG_LIST += ERRATA_A720_2792132