diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 3d26ba7..3e89d9d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -394,6 +394,7 @@
 config PPC_ISERIES
 	bool "IBM Legacy iSeries"
 	depends on PPC_MULTIPLATFORM && PPC64
+	select PPC_INDIRECT_IO
 
 config PPC_CHRP
 	bool "Common Hardware Reference Platform (CHRP) based machines"
@@ -548,6 +549,15 @@
 	bool
 	default n
 
+config PPC_INDIRECT_IO
+	bool
+	select GENERIC_IOMAP
+	default n
+
+config GENERIC_IOMAP
+	bool
+	default n
+
 source "drivers/cpufreq/Kconfig"
 
 config CPU_FREQ_PMAC