fix(errata): workaround for Neoverse-N2 erratum 2138958
Neoverse-N2 erratum 2138958 is a Cat B erratum that applies to
revision r0p0 of CPU. It is still open. The workaround
is to set CPUACTLR5_EL1[13] to 1'b1.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1982442/latest
Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: I5247f8f8eef08d38c169aad6d2c5501ac387c720
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 4224fcc..b676987 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -465,6 +465,10 @@
# to revision r0p0 of the Neoverse N2 cpu and is still open.
ERRATA_N2_2242415 ?=0
+# Flag to apply erratum 2138958 workaround during reset. This erratum applies
+# to revision r0p0 of the Neoverse N2 cpu and is still open.
+ERRATA_N2_2138958 ?=0
+
# Flag to apply erratum 2055002 workaround during reset. This erratum applies
# to revision r1p0, r2p0 of the Cortex-A710 cpu and is still open.
ERRATA_A710_2055002 ?=0
@@ -870,6 +874,10 @@
$(eval $(call assert_boolean,ERRATA_N2_2242415))
$(eval $(call add_define,ERRATA_N2_2242415))
+# Process ERRATA_N2_2138958 flag
+$(eval $(call assert_boolean,ERRATA_N2_2138958))
+$(eval $(call add_define,ERRATA_N2_2138958))
+
# Process ERRATA_A710_2055002 flag
$(eval $(call assert_boolean,ERRATA_A710_2055002))
$(eval $(call add_define,ERRATA_A710_2055002))