Method, device, memory and terminal for data transfer

Abstract

The invention provides a data transferring method and device, a storage and a terminal. Time needed by differential upgrading based on a physical block can be shortened, and the influence on the service life of the storage is relieved. The method comprises the steps that when an EMMC receives a first logic block ID and a second logic block ID sent by a CPU, according to the mapping correlation chart of the logical blocks and a physical block, a first physical block identifier corresponding to the first logic block ID is determined, the corresponding relation of the first logic block ID and the first physical block identifier in the mapping correlation chart of the logic blocks and the physical block is relieved, and the corresponding relation of the second logic block ID and the first physical block identifier is built. Physical block data can be transferred by modifying the mapping correlation chart of the logic blocks and the physical block, and no actual physical block erasing and writing operation needs to be performed, so that the problems that a large number of erasing and writing operations need to be performed in the differential upgrading process, and the service life of the storage is affected can be solved, and the upgrading efficiency is improved.

Description

technical field [0001] The present invention relates to the field of intelligent terminals, in particular to a data transfer method, device, memory and terminal. Background technique [0002] Google Android (Android) "Marshmallow" (Marshmallow), the version number is 6.0, also known as Google M version or Android M version, the space download technology (Over-the-Air Technology, OTA) differential upgrade mode, from the file-based The differential is changed to a binary differential upgrade mode based on physical blocks. [0003] The core reason why the Google M version adopts the upgrade method based on physical blocks is to enhance the security protection of system files and provide a security verification mechanism, but it achieves the purpose of improving security protection by sacrificing upgrade efficiency. [0004] Upgrading based on file differential is to process each changed file on the basis of the file system and write the new file into the file system. Such as ...

AI Technical Summary

Problems solved by technology

figure 2 In order to insert the data of a physical block between the original physical block block1 and the physical block block2, it can be seen from the figure that only the data of a new physical block was originally added, but the final result is after the physical block block2 All physical blocks must be moved for data, which leads to a large number of unmodified physical blocks that need to be moved for data, resulting in an increase in the amount of upgrade operations, a prolonged upgrade time, and a large number of EMMC erase operations, affecting the life of EMMC

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