diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index 57a7e8d6e21810eba0ec432108b46f4d1065674f..7c96ad8ab95115332cdc85a0cfbc08fb0708c345 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -312,25 +312,29 @@ int checkcpu (void)
 #endif /* CONFIG_440GR */
 #endif /* CONFIG_440 */
 
-	case PVR_440EPX1_RA:
+#ifdef CONFIG_440EPX
+	case PVR_440EPX1_RA: /* 440EPx rev A and 440GRx rev A have same PVR */
 		puts("EPx Rev. A");
 		strcpy(addstr, "Security/Kasumi support");
 		break;
 
-	case PVR_440EPX2_RA:
+	case PVR_440EPX2_RA: /* 440EPx rev A and 440GRx rev A have same PVR */
 		puts("EPx Rev. A");
 		strcpy(addstr, "No Security/Kasumi support");
 		break;
+#endif /* CONFIG_440EPX */
 
-	case PVR_440GRX1_RA:
+#ifdef CONFIG_440GRX
+	case PVR_440GRX1_RA: /* 440EPx rev A and 440GRx rev A have same PVR */
 		puts("GRx Rev. A");
 		strcpy(addstr, "Security/Kasumi support");
 		break;
 
-	case PVR_440GRX2_RA:
+	case PVR_440GRX2_RA: /* 440EPx rev A and 440GRx rev A have same PVR */
 		puts("GRx Rev. A");
 		strcpy(addstr, "No Security/Kasumi support");
 		break;
+#endif /* CONFIG_440GRX */
 
 	case PVR_440SP_6_RAB:
 		puts("SP Rev. A/B");
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index f102600038bf836938eafeb47c561b3d016076ee..ad9fd49ad4327a62764cee8f9a404893fdfa3aaf 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -740,8 +740,8 @@
 #define PVR_440GR_RB	0x422218D4 /* 440EP rev C and 440GR rev B have same PVR */
 #define PVR_440EPX1_RA  0x216218D0 /* 440EPX rev A with Security / Kasumi */
 #define PVR_440EPX2_RA  0x216218D4 /* 440EPX rev A without Security / Kasumi */
-#define PVR_440GRX1_RA  0x216218D8 /* 440GRX rev A with Security / Kasumi */
-#define PVR_440GRX2_RA  0x216218DC /* 440GRX rev A without Security / Kasumi */
+#define PVR_440GRX1_RA  0x216218D0 /* 440GRX rev A with Security / Kasumi */
+#define PVR_440GRX2_RA  0x216218D4 /* 440GRX rev A without Security / Kasumi */
 #define PVR_440GX_RA	0x51B21850
 #define PVR_440GX_RB	0x51B21851
 #define PVR_440GX_RC	0x51B21892