Firmware upgrading method and device for embedded equipment

Abstract

The invention discloses a firmware upgrading method and device for embedded equipment, and the method comprises the steps of receiving an upgrading instruction sent by a user after selecting a to-be-upgraded mirror image from the whole upgraded mirror image after the equipment is normally started, closing the process of the current equipment, releasing a memory, importing the to-be-upgraded mirrorimage into a specific memory area, and restarting the equipment; after the boot program of the embedded device system is started, if a to-be-upgraded mirror image is detected in the specific memory area, writing the to-be-upgraded mirror image into a flash memory, otherwise normally starting the device; and after the to-be-upgraded mirror image is written into the flash memory, emptying the specific memory area, and restarting the equipment to finish upgrading. According to the method and the device, upgrading is carried out based on the system boot program Boot, the dependence on a storage medium in the upgrading process is omitted, the upgrading stability is higher under the Boot, and the adaptability is wider.

Description

technical field [0001] The invention belongs to the technical field of device firmware upgrades, and in particular relates to a firmware upgrade method and device for embedded devices. Background technique [0002] With the increase of software functions and the resolution of product problems, embedded devices must have a need for version upgrades during the long-term operation. However, the market competition is becoming more and more fierce, and each security company is more and more strict on the cost control of its own products, and memory is the primary chip for cost saving. There are many monitoring equipment products with very tight memory on the market. For this kind of equipment, use the upgrade method under the previous system (such as web upgrade, U disk upgrade), and the system memory may be exhausted after the upgrade file is imported. Upgrading under the system boot program boot often needs to be upgraded based on storage media such as TFTP or U disk. From the...

AI Technical Summary

Problems solved by technology

When using this method of upgrading the flash memory through a program, it is necessary to run an additional upgrade program, which increases the memory consumption of the device, and there is a problem of insufficient memory on the embedded small memory that is already tight, which leads to the failure of the upgrade.

At the same time, there is such a problem: because the original file system resources have not been released, some processes are still running, and the commands used in the upgrade are also stored in the file system, so if you directly use the upgrade image file to overwrite the original The corresponding file of the file system, which is prone to abnormal conditions

[0004] In addition, the pace of development may be relatively fast now. Some process-oriented software was not considered so sound in the early stage of development. After the customer runs for a period of time or configures certain configurations, the process will fail to start. According to the previous upgrade method, it must rely on the serial port or U disk for upgrade

However, it will be more troublesome for online customers to use related tools such as serial ports. Generally, customers only have equipment and no other tools, so there is no way to upgrade.

It is no problem to upgrade by transferring files to flash, compared to devices with relatively large FLASH partition capacity, but compared to the current situation, the partition size of products is limited, and it is rare to store large image files.

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