diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 398edf9..e3bfc2f 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
+# Copyright (c) 2014-2020, ARM Limited and Contributors. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -20,6 +20,10 @@
 WORKAROUND_CVE_2018_3639	?=1
 DYNAMIC_WORKAROUND_CVE_2018_3639	?=0
 
+# Flag to indicate internal or external Last level cache
+# By default internal
+NEOVERSE_N1_EXTERNAL_LLC	?=0
+
 # Process SKIP_A57_L1_FLUSH_PWR_DWN flag
 $(eval $(call assert_boolean,SKIP_A57_L1_FLUSH_PWR_DWN))
 $(eval $(call add_define,SKIP_A57_L1_FLUSH_PWR_DWN))
@@ -43,6 +47,9 @@
 $(eval $(call assert_boolean,DYNAMIC_WORKAROUND_CVE_2018_3639))
 $(eval $(call add_define,DYNAMIC_WORKAROUND_CVE_2018_3639))
 
+$(eval $(call assert_boolean,NEOVERSE_N1_EXTERNAL_LLC))
+$(eval $(call add_define,NEOVERSE_N1_EXTERNAL_LLC))
+
 ifneq (${DYNAMIC_WORKAROUND_CVE_2018_3639},0)
     ifeq (${WORKAROUND_CVE_2018_3639},0)
         $(error "Error: WORKAROUND_CVE_2018_3639 must be 1 if DYNAMIC_WORKAROUND_CVE_2018_3639 is 1")