fix(cpus): workaround for Neoverse V1 erratum 2743093
Neoverse V1 erratum 2743093 is a Cat B erratum that applies to
all revisions <=r1p2 and is still open. The workaround is to
insert a dsb before the isb in the power down sequence.
SDEN documentation:
https://developer.arm.com/documentation/SDEN1401781/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I8ee7c16c14c4fd6ee35d20c855273ecfce0d1b32
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 527a82f..69c474e 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -516,6 +516,11 @@
# to revisions r0p0, r1p0 and r1p1 of the Neoverse V1 cpu and is still open.
ERRATA_V1_2372203 ?=0
+# Flag to apply erratum 2743093 workaround during powerdown. This erratum
+# applies to revisions r0p0, r1p0, r1p1 and r1p2 of the Neoverse V1 cpu and is
+# still open.
+ERRATA_V1_2743093 ?=0
+
# Flag to apply erratum 1987031 workaround during reset. This erratum applies
# to revisions r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is still open.
ERRATA_A710_1987031 ?=0
@@ -1162,6 +1167,10 @@
$(eval $(call assert_boolean,ERRATA_V1_2372203))
$(eval $(call add_define,ERRATA_V1_2372203))
+# Process ERRATA_V1_2743093 flag
+$(eval $(call assert_boolean,ERRATA_V1_2743093))
+$(eval $(call add_define,ERRATA_V1_2743093))
+
# Process ERRATA_A710_1987031 flag
$(eval $(call assert_boolean,ERRATA_A710_1987031))
$(eval $(call add_define,ERRATA_A710_1987031))