diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 2ea575cb3401248c1cb97f9596c9e7079c3256b2..2556c2182789c9b6dfe2dffdedc7cd2a6a09f118 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -354,6 +354,11 @@ mpc86xx_smp_defconfig:
 	$(call merge_into_defconfig,mpc86xx_basic_defconfig,\
 		86xx-smp 86xx-hw fsl-emb-nonhw)
 
+PHONY += ppc32_allmodconfig
+ppc32_allmodconfig:
+	$(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \
+		-f $(srctree)/Makefile allmodconfig
+
 define archhelp
   @echo '* zImage          - Build default images selected by kernel config'
   @echo '  zImage.*        - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
diff --git a/arch/powerpc/configs/book3s_32.config b/arch/powerpc/configs/book3s_32.config
new file mode 100644
index 0000000000000000000000000000000000000000..8721eb7b1294d85df94efdcfe5c3873e32980149
--- /dev/null
+++ b/arch/powerpc/configs/book3s_32.config
@@ -0,0 +1,2 @@
+CONFIG_PPC64=n
+CONFIG_PPC_BOOK3S_32=y