#define EXT_CSD_BOOT_PART_NUM(x) (x << 3)
#define EXT_CSD_PARTITION_ACCESS(x) (x << 0)
+#define EXT_CSD_EXTRACT_BOOT_ACK(x) (((x) >> 6) & 0x1)
+#define EXT_CSD_EXTRACT_BOOT_PART(x) (((x) >> 3) & 0x7)
+#define EXT_CSD_EXTRACT_PARTITION_ACCESS(x) ((x) & 0x7)
+
#define EXT_CSD_BOOT_BUS_WIDTH_MODE(x) (x << 3)
#define EXT_CSD_BOOT_BUS_WIDTH_RESET(x) (x << 2)
#define EXT_CSD_BOOT_BUS_WIDTH_WIDTH(x) (x)