diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 3212d076ac6a..712c5e8768ce 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -376,6 +376,16 @@ ppc64_book3e_allmodconfig:
 	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \
 		-f $(srctree)/Makefile allmodconfig
 
+PHONY += ppc32_randconfig
+ppc32_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/32-bit.config \
+		-f $(srctree)/Makefile randconfig
+
+PHONY += ppc64_randconfig
+ppc64_randconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/64-bit.config \
+		-f $(srctree)/Makefile randconfig
+
 define archhelp
   @echo '* zImage          - Build default images selected by kernel config'
   @echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
diff --git a/arch/powerpc/configs/32-bit.config b/arch/powerpc/configs/32-bit.config
new file mode 100644
index 000000000000..ad6546850c68
--- /dev/null
+++ b/arch/powerpc/configs/32-bit.config
@@ -0,0 +1 @@
+# CONFIG_PPC64 is not set
diff --git a/arch/powerpc/configs/64-bit.config b/arch/powerpc/configs/64-bit.config
new file mode 100644
index 000000000000..0fe6406929e2
--- /dev/null
+++ b/arch/powerpc/configs/64-bit.config
@@ -0,0 +1 @@
+CONFIG_PPC64=y