1 files changed, 6 insertions, 1 deletions
diff --git a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Sec.c b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Sec.c
index 0cf07a3caf..37140a4a58 100644
--- a/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Sec.c
+++ b/ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibCTA9x4/CTA9x4Sec.c
@@ -32,9 +32,14 @@
 **/
 VOID
 ArmPlatformTrustzoneInit (
-  VOID
+  IN  UINTN                     MpId
   )
 {
+  // Nothing to do
+  if (!IS_PRIMARY_CORE(MpId)) {
+    return;
+  }
+
   //
   // Setup TZ Protection Controller
   //