ECU (electronic control unit) firmware updating method based on Bootloader self update

A firmware update and self-update technology, applied in software engineering design, instruments, electrical digital data processing, etc., can solve the problems of incomplete elimination of loopholes and incomplete considerations, achieve efficient and reliable program programming, save time and cost, The effect of ensuring safety

Active Publication Date: 2015-02-18
TONGJI UNIV
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Problems solved by technology

However, the existence of loopholes and the possibility of incomplete consideration cannot be completely eliminated

Method used

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  • ECU (electronic control unit) firmware updating method based on Bootloader self update
  • ECU (electronic control unit) firmware updating method based on Bootloader self update
  • ECU (electronic control unit) firmware updating method based on Bootloader self update

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0037] As shown in Figure 1, a kind of ECU firmware update method based on Bootloader self-update comprises the following steps:

[0038] Step S1: if figure 2 As shown, run the Bootloader program and divide the storage space of the ECU system into a user data storage area and a program storage area. The user data storage area (Data Flash) includes the version information area and the tag area, and the version information area includes the Bootloader version information and application programs. Version information, the tag area includes update request tags, application validity tags...

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Abstract

The invention relates to an ECU (electronic control unit) firmware updating method based on Bootloader self update. The ECU firmware updating method based on the Bootloader self update comprises the following steps: S1: dividing the storage space of an ECU system; S2: judging whether the ECU system receives an application program updating request or a Bootloader updating request, if the application program updating request is received, executing the step S3, and if the Bootloader updating request is received, executing the step S4; S3: updating codes in an application code area in a way of incremental update, and executing thestep S5; S4: performing integral self update on codes in a Bootloader area by using a Bootloader program, and executing the step S5; S5: rewritting corresponding version information in a version information area, and resetting the ECU system. Compared with the prior art, the ECU firmware updating method based on the Bootloader self update has the advantages that the time and the cost are saved, the security of the Bootloader is ensured, and the programming process is more efficient and reliable.

Description

technical field [0001] The invention relates to a firmware update method, in particular to an ECU firmware update method based on Bootloader self-update. Background technique [0002] In the automotive electronic control unit (ECU), there is no need to load the operating system kernel. The bootloader (Bootloader) is a program used to complete the embedded system startup and system software loading work. The main work is to update the application program code, that is, Update online. [0003] Generally, the programming of ECU is carried out, and the overall update method is often adopted, firstly, the entire storage space is erased, and then the entire new program is programmed into the target ECU. But sometimes, the ECU software version has not changed much before and after. If the overall update method is still adopted, the update efficiency will be low, and the memory consumption occupied by the update will be large. [0004] At the same time, when designing the Bootload...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/445
CPCG06F8/654
Inventor 张戟廖治谢朋甫朱翔宇彭勇陈启鹏
Owner TONGJI UNIV
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