+--- a/arch/arm/mach-cns3xxx/Kconfig
++++ b/arch/arm/mach-cns3xxx/Kconfig
+@@ -3,6 +3,7 @@ menu "CNS3XXX platform type"
+
+ config MACH_CNS3420VB
+ bool "Support for CNS3420 Validation Board"
++ select HAVE_ARM_SCU if SMP
+ select MIGHT_HAVE_PCI
+ help
+ Include support for the Cavium Networks CNS3420 MPCore Platform