diff --git a/target-microblaze/cpu.h b/target-microblaze/cpu.h
index 0f82abd..0dd164f 100644
--- a/target-microblaze/cpu.h
+++ b/target-microblaze/cpu.h
@@ -212,7 +212,9 @@
 /* MSR Reset value PVR mask */
 #define PVR11_MSR_RESET_VALUE_MASK      0x000007FF
 
-
+#define C_PVR_NONE                      0
+#define C_PVR_BASIC                     1
+#define C_PVR_FULL                      2
 
 /* CPU flags.  */