Data partition storage method and system boot method of embedded system

Abstract

The invention provides a data partition storage method and a system boot method of an embedded system, wherein the data partition storage method comprises the following steps: packaging each partition files including a Bootloader partition file, one or two Image partition files containing kernels and root file systems, and other user data partition files; respectively adding header information to all the partition files except the Bootloader partition file, the header information being used for identifying attributes of a current partition file; and writing each partition files into a FLASH chip in a sector alignment manner. In embodiments according to the invention, a centralized partition table dose not need to be set, not requiring implementation of centralized management, thereby, enabling simple and convenient use and improved safety, avoiding a risk of incapability of positioning each partition after the centralized partition table being damaged; functions of each partition are independent from each other, rendering no effect on each other, thereby, reducing data loss risk; partition data is organized in a compact manner, which enables the system to be more concise.

Description

technical field [0001] The invention relates to the field of embedded network communication, in particular to a data partition storage method of an embedded system and a system booting and starting method. Background technique [0002] In the field of embedded devices, FLASH is widely used as a lightweight data storage solution due to its many advantages over traditional storage device disks. However, unlike disks, FLASH has some of its own characteristics due to its different working principles. For example, before writing data, the Erase (erase) operation must be performed on the target Sector (sector). When erasing, the sector is used as the minimum The unit is used for erasing, while the data is written in batches according to the maximum unit of Page (page). [0003] In embedded devices with Linux as the kernel, a piece of FLASH is often divided into several different logical Partitions (partitions), which are used to store various data with different functions and pro...

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Problems solved by technology

Since the partition table in this method is concentrated in a fixed location, the security of this partition table becomes very important, because once the partition table is destroyed, all partitions on the FLASH will not be able to be located

[0005] Another method is to allocate a fixed location for each partition, which is built into the Bootloader. When the Bootloader is powered on, it will locate each partition according to the specified location. Obviously, this method has no flexibility at all. If the partition size and When the location needs to be changed, the inherent partition positioning information in the Bootloader needs to be changed accordingly

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