extern nand_device_t *get_nand_device_by_num(int num);
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_register_commands(struct command_context_s *cmd_ctx);
+extern int nand_init(struct command_context_s *cmd_ctx);
#define ERROR_NAND_DEVICE_INVALID (-1100)
#define ERROR_NAND_OPERATION_FAILED (-1101)