diff --git a/board/amcc/canyonlands/config.mk b/board/amcc/canyonlands/config.mk
index 7e79536..2330cae 100644
--- a/board/amcc/canyonlands/config.mk
+++ b/board/amcc/canyonlands/config.mk
@@ -30,14 +30,6 @@
 TEXT_BASE = 0xFFFA0000
 endif
 
-ifeq ($(CONFIG_NAND_U_BOOT),y)
-LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-endif
-
-ifeq ($(CONFIG_PCIBOOT_U_BOOT),y)
-LDSCRIPT = $(TOPDIR)/board/$(BOARDDIR)/u-boot-nand.lds
-endif
-
 PLATFORM_CPPFLAGS += -DCONFIG_440=1
 
 ifeq ($(debug),1)
diff --git a/board/amcc/kilauea/kilauea.c b/board/amcc/kilauea/kilauea.c
index 37ef06e..d806a41 100644
--- a/board/amcc/kilauea/kilauea.c
+++ b/board/amcc/kilauea/kilauea.c
@@ -230,14 +230,22 @@
 	return 0;
 }
 
-int board_emac_count(void)
+static int is_405exr(void)
 {
 	u32 pvr = get_pvr();
 
+	if (pvr & 0x00000004)
+		return 0;		/* bit 2 set -> 405EX */
+
+	return 1;			/* bit 2 cleared -> 405EXr */
+}
+
+int board_emac_count(void)
+{
 	/*
 	 * 405EXr only has one EMAC interface, 405EX has two
 	 */
-	if ((pvr == PVR_405EXR1_RA) || (pvr == PVR_405EXR2_RA))
+	if (is_405exr())
 		return 1;
 	else
 		return 2;
@@ -245,12 +253,10 @@
 
 static int board_pcie_count(void)
 {
-	u32 pvr = get_pvr();
-
 	/*
 	 * 405EXr only has one EMAC interface, 405EX has two
 	 */
-	if ((pvr == PVR_405EXR1_RA) || (pvr == PVR_405EXR2_RA))
+	if (is_405exr())
 		return 1;
 	else
 		return 2;
@@ -259,9 +265,8 @@
 int checkboard (void)
 {
 	char *s = getenv("serial#");
-	u32 pvr = get_pvr();
 
-	if ((pvr == PVR_405EXR1_RA) || (pvr == PVR_405EXR2_RA))
+	if (is_405exr())
 		printf("Board: Haleakala - AMCC PPC405EXr Evaluation Board");
 	else
 		printf("Board: Kilauea - AMCC PPC405EX Evaluation Board");
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index 54cc256..39f439d 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -346,6 +346,26 @@
 		strcpy(addstr, "No Security support");
 		break;
 
+	case PVR_405EX1_RC:
+		puts("EX Rev. C");
+		strcpy(addstr, "Security support");
+		break;
+
+	case PVR_405EX2_RC:
+		puts("EX Rev. C");
+		strcpy(addstr, "No Security support");
+		break;
+
+	case PVR_405EXR1_RC:
+		puts("EXr Rev. C");
+		strcpy(addstr, "Security support");
+		break;
+
+	case PVR_405EXR2_RC:
+		puts("EXr Rev. C");
+		strcpy(addstr, "No Security support");
+		break;
+
 #if defined(CONFIG_440)
 	case PVR_440GP_RB:
 		puts("GP Rev. B");
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
index 4c049a5..8bdfb9d 100644
--- a/include/asm-ppc/processor.h
+++ b/include/asm-ppc/processor.h
@@ -772,10 +772,14 @@
 #define PVR_405EP_RA	0x51210950
 #define PVR_405GPR_RB	0x50910951
 #define PVR_405EZ_RA	0x41511460
-#define PVR_405EXR1_RA	0x12911473 /* 405EXr rev A with Security */
-#define PVR_405EXR2_RA	0x12911471 /* 405EXr rev A without Security */
-#define PVR_405EX1_RA	0x12911477 /* 405EX rev A with Security */
-#define PVR_405EX2_RA	0x12911475 /* 405EX rev A without Security */
+#define PVR_405EXR1_RA	0x12911473 /* 405EXr rev A/B with Security */
+#define PVR_405EXR2_RA	0x12911471 /* 405EXr rev A/B without Security */
+#define PVR_405EX1_RA	0x12911477 /* 405EX rev A/B with Security */
+#define PVR_405EX2_RA	0x12911475 /* 405EX rev A/B without Security */
+#define PVR_405EXR1_RC	0x1291147B /* 405EXr rev C with Security */
+#define PVR_405EXR2_RC	0x12911479 /* 405EXr rev C without Security */
+#define PVR_405EX1_RC	0x1291147F /* 405EX rev C with Security */
+#define PVR_405EX2_RC	0x1291147D /* 405EX rev C without Security */
 #define PVR_440GP_RB	0x40120440
 #define PVR_440GP_RC	0x40120481
 #define PVR_440EP_RA	0x42221850