--- /dev/null
+--- a/arch/powerpc/boot/dcr.h
++++ b/arch/powerpc/boot/dcr.h
+@@ -59,6 +59,14 @@ 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
+@@ -67,6 +75,9 @@ 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