+/* Function to change the size of boot partition and rpmb partitions */
+int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
+ unsigned long rpmbsize);
+/* Function to send commands to open/close the specified boot partition */
+int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
+
+/**
+ * Start device initialization and return immediately; it does not block on
+ * polling OCR (operation condition register) status. Then you should call
+ * mmc_init, which would block on polling OCR status and complete the device
+ * initializatin.
+ *
+ * @param mmc Pointer to a MMC device struct
+ * @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
+ */
+int mmc_start_init(struct mmc *mmc);
+
+/**
+ * Set preinit flag of mmc device.
+ *
+ * This will cause the device to be pre-inited during mmc_initialize(),
+ * which may save boot time if the device is not accessed until later.
+ * Some eMMC devices take 200-300ms to init, but unfortunately they
+ * must be sent a series of commands to even get them to start preparing
+ * for operation.
+ *
+ * @param mmc Pointer to a MMC device struct
+ * @param preinit preinit flag value
+ */
+void mmc_set_preinit(struct mmc *mmc, int preinit);