diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 114b90fdea240cab6d7cf7eeeb1b8adea51a7823..f8db33d55275e8c1656f96dea7a26b0c9f55413a 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -746,6 +746,16 @@ config MPC834x
 	bool
 	default y if MPC834x_SYS
 
+config CPM1
+	bool
+	depends on 8xx
+	default y
+	help
+	  The CPM1 (Communications Processor Module) is a coprocessor on
+	  embedded CPUs made by Motorola.  Selecting this option means that
+	  you wish to build a kernel for a machine with a CPM1 coprocessor
+	  on it (8xx, 827x, 8560).
+
 config CPM2
 	bool
 	depends on 8260 || MPC8560 || MPC8555