fix(cpus): workaround for Neoverse N2 erratum 2743089
Neoverse N2 erratum 2743089 is a Cat B erratum that applies to
all revisions <=r0p2 and is fixed in r0p3. The workaround is to
insert a dsb before the isb in the power down sequence.
SDEN documentation:
https://developer.arm.com/documentation/SDEN1982442/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Idec862226bd32c91374a8bbd5d73d7ee480a34d9
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 2d7ccc0..b1f7d27 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -467,10 +467,6 @@
# applies to all revisions <= r4p1 of the Neoverse N1 cpu and is still open.
ERRATA_N1_2743102 ?=0
-# Flag to apply erratum 2002655 workaround during reset. This erratum applies
-# to revisions r0p0 of the Neoverse-N2 cpu, it is still open.
-ERRATA_N2_2002655 ?=0
-
# Flag to apply erratum 1618635 workaround during reset. This erratum applies
# to revision r0p0 of the Neoverse V1 cpu and was fixed in the revision r1p0.
ERRATA_V1_1618635 ?=0
@@ -587,6 +583,10 @@
# still open.
ERRATA_A710_2768515 ?=0
+# Flag to apply erratum 2002655 workaround during reset. This erratum applies
+# to revisions r0p0 of the Neoverse-N2 cpu, it is still open.
+ERRATA_N2_2002655 ?=0
+
# Flag to apply erratum 2067956 workaround during reset. This erratum applies
# to revision r0p0 of the Neoverse N2 cpu and is still open.
ERRATA_N2_2067956 ?=0
@@ -635,6 +635,10 @@
# to revision r0p0 of the Neoverse N2 cpu, it is fixed in r0p1.
ERRATA_N2_2388450 ?=0
+# Flag to apply erratum 2743089 workaround during during powerdown. This erratum
+# applies to all revisions <= r0p2 of the Neoverse N2 cpu, it is fixed in r0p3.
+ERRATA_N2_2743089 ?=0
+
# Flag to apply erratum 2002765 workaround during reset. This erratum applies
# to revisions r0p0, r1p0, and r2p0 of the Cortex-X2 cpu and is still open.
ERRATA_X2_2002765 ?=0
@@ -1123,10 +1127,6 @@
# Process ERRATA_N1_2743102 flag
$(eval $(call assert_boolean,ERRATA_N1_2743102))
$(eval $(call add_define,ERRATA_N1_2743102))
-#
-# Process ERRATA_N2_2002655 flag
-$(eval $(call assert_boolean,ERRATA_N2_2002655))
-$(eval $(call add_define,ERRATA_N2_2002655))
# Process ERRATA_V1_1618635 flag
$(eval $(call assert_boolean,ERRATA_V1_1618635))
@@ -1240,6 +1240,10 @@
$(eval $(call assert_boolean,ERRATA_A710_2768515))
$(eval $(call add_define,ERRATA_A710_2768515))
+# Process ERRATA_N2_2002655 flag
+$(eval $(call assert_boolean,ERRATA_N2_2002655))
+$(eval $(call add_define,ERRATA_N2_2002655))
+
# Process ERRATA_N2_2067956 flag
$(eval $(call assert_boolean,ERRATA_N2_2067956))
$(eval $(call add_define,ERRATA_N2_2067956))
@@ -1288,6 +1292,10 @@
$(eval $(call assert_boolean,ERRATA_N2_2388450))
$(eval $(call add_define,ERRATA_N2_2388450))
+# Process ERRATA_N2_2743089 flag
+$(eval $(call assert_boolean,ERRATA_N2_2743089))
+$(eval $(call add_define,ERRATA_N2_2743089))
+
# Process ERRATA_X2_2002765 flag
$(eval $(call assert_boolean,ERRATA_X2_2002765))
$(eval $(call add_define,ERRATA_X2_2002765))