--- a/arch/powerpc/boot/dcr.h
+++ b/arch/powerpc/boot/dcr.h
@@ -55,6 +55,14 @@ static const unsigned long sdram_bxcr[]
 #define   EBC_BXCR(n)					  (n)
 #define	    EBC_BXCR_BAS				    0xfff00000
 #define	    EBC_BXCR_BS				  	    0x000e0000
+#define	      EBC_BXCR_BS_1M				      0x00000000
+#define	      EBC_BXCR_BS_2M				      0x00020000
+#define	      EBC_BXCR_BS_4M				      0x00040000
+#define	      EBC_BXCR_BS_8M				      0x00060000
+#define	      EBC_BXCR_BS_16M				      0x00080000
+#define	      EBC_BXCR_BS_32M				      0x000a0000
+#define	      EBC_BXCR_BS_64M				      0x000c0000
+#define	      EBC_BXCR_BS_128M				      0x000e0000
 #define	    EBC_BXCR_BANK_SIZE(reg) \
 	(0x100000 << (((reg) & EBC_BXCR_BS) >> 17))
 #define	    EBC_BXCR_BU				  	    0x00018000
@@ -63,6 +71,9 @@ static const unsigned long sdram_bxcr[]
 #define	      EBC_BXCR_BU_WO			  	      0x00010000
 #define	      EBC_BXCR_BU_RW			  	      0x00018000
 #define	    EBC_BXCR_BW				  	    0x00006000
+#define	      EBC_BXCR_BW_8				      0x00000000
+#define	      EBC_BXCR_BW_16				      0x00002000
+#define	      EBC_BXCR_BW_32				      0x00006000
 #define   EBC_B0AP					  0x10
 #define   EBC_B1AP					  0x11
 #define   EBC_B2AP					  0x12
