-extern int nand_read_page_raw(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
-extern int nand_write_page_raw(struct nand_device_s *device, u32 page, u8 *data, u32 data_size, u8 *oob, u32 oob_size);
-extern int nand_read_status(struct nand_device_s *device, u8 *status);
+extern int nand_read_page_raw(struct nand_device_s *device, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size);
+extern int nand_write_page_raw(struct nand_device_s *device, uint32_t page, uint8_t *data, uint32_t data_size, uint8_t *oob, uint32_t oob_size);
+extern int nand_read_status(struct nand_device_s *device, uint8_t *status);
+extern int nand_calculate_ecc(struct nand_device_s *device, const uint8_t *dat, uint8_t *ecc_code);
+extern int nand_calculate_ecc_kw(struct nand_device_s *device, const uint8_t *dat, uint8_t *ecc_code);