#define JZ_NAND_CMD_ADDR (JZ_NAND_DATA_ADDR + 0x8000)
#define JZ_NAND_ADDR_ADDR (JZ_NAND_DATA_ADDR + 0x10000)
-#define BIT(x) (1 << (x))
#define JZ_NAND_ECC_CTRL_ENCODING BIT(3)
#define JZ_NAND_ECC_CTRL_RS BIT(2)
#define JZ_NAND_ECC_CTRL_RESET BIT(1)