A kind of nand memory off-line programming image production and verification method

A verification method and memory technology, which are applied in the field of NAND memory offline programming image production and verification, can solve problems such as inability to verify, difficulty in replacement, and difficulty in locating online programming errors, so as to improve programming efficiency, realize full automation, Increase the effect of the mirror verification mechanism

Active Publication Date: 2021-02-26
YANFENG VISTEON ELECTRONICS TECH NANJING
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Problems solved by technology

[0002] At present, the existing technology can only realize online image programming, which needs to be input and compiled to generate an image. For the data verification part, it can only be programmed by turning on the hardware enable of the corresponding Nandflash controller after power-on. For the part with a file system, It is also necessary to mount the file system and realize it by online copying, and it is difficult to locate the error of online programming, especially when there are many bad blocks, it can only be found after patching, difficult to replace and impossible to verify

Method used

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  • A kind of nand memory off-line programming image production and verification method
  • A kind of nand memory off-line programming image production and verification method
  • A kind of nand memory off-line programming image production and verification method

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Experimental program
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Embodiment

[0024] Embodiment: the method comprises the following steps:

[0025] 1) Perform corresponding software processing on the different partitions of the Nandflash that finally generates the image: add system configuration information and bad block tables to the Uboot partition, and add file system header information and checksums to the Ubifs partition;

[0026] 2) For a partition without a file system, it is necessary to calculate the corresponding check code for the corresponding data area using the software check code algorithm, and then organize the data according to the current Nandflash data layout;

[0027] 3) For data with a file system, first create an offline image based on the file system offline image creation tool, then add the corresponding file system information to the corresponding data area, and finally calculate the corresponding data area using the software checksum algorithm. The check code, and finally organize the data according to the current Nandflash dat...

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Abstract

The invention provides a method for making and verifying an off-line image for NAND memory, which relates to the technical field of on-vehicle storage devices. By performing corresponding software processing on different partitions that finally generate the image, one-key generation of the offline image can be realized, as long as the original Image input, the software will automatically generate offline image files according to the actual partition configuration of Nandflash, so that the image generation does not depend on the operation of the Nandflash controller and the corresponding file system of Nandflash, and the image programming of Nandflash can be realized without powering on the machine. Improve the production line programming efficiency, realize the full automation of offline image production through software simulation hardware algorithm and the improvement of existing file system offline image production tools, and increase the image verification mechanism through the burner for one-time offline programming , verify the correctness of the offline mirror by reading back the offline mirror and comparing it with the source data.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted storage devices, in particular to a method for making and verifying an off-line programming image of a NAND memory. Background technique [0002] At present, the existing technology can only realize online image programming, which needs to be input and compiled to generate an image. For the data verification part, it can only be programmed by turning on the hardware enable of the corresponding Nandflash controller after power-on. For the part with a file system, It is also necessary to mount the file system and implement it through online copying, and it is difficult to locate errors in online programming, especially when there are many bad blocks that can only be found after patching, difficult to replace and impossible to verify. Contents of the invention [0003] In order to solve the above-mentioned technical problems and overcome the method of completely relying on the Nandflash con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/61G06F11/10G06F11/20
CPCG06F8/63G06F11/1068G06F11/2094
Inventor 汪琼臧晓峰
Owner YANFENG VISTEON ELECTRONICS TECH NANJING
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