diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 7bfb0d2..81eaa4b 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -23,6 +23,11 @@
 config SUPERH64
 	def_bool y if CPU_SH5
 
+config ARCH_DEFCONFIG
+	string
+	default "arch/sh/configs/shx3_defconfig" if SUPERH32
+	default "arch/sh/configs/cayman_defconfig" if SUPERH64
+
 config RWSEM_GENERIC_SPINLOCK
 	def_bool y