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Method for manufacturing and verifying offline burning mirror image of NAND memory

A verification method and memory technology are applied in the field of off-line programming and verification of NAND memory images, which can solve the problems of inability to verify, difficult to replace, and difficult to locate errors in online programming, so as to improve programming efficiency, realize full automation, Increase the effect of mirror verification mechanism

Active Publication Date: 2020-11-20
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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  • Method for manufacturing and verifying offline burning mirror image of NAND memory
  • Method for manufacturing and verifying offline burning mirror image of NAND memory
  • Method for manufacturing and verifying offline burning mirror image of NAND memory

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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 manufacturing and verifying an offline burning mirror image of an NAND memory. The invention relates to the technical field of vehicle-mounted storage equipment. Corresponding software processing is carried out on different partitions of a finally generated mirror image, and therefore one-key generation of an offline mirror image can be realized; once an original mirror image is input, software can automatically generate an offline mirror image file according to the actual partition configuration of the Nandflash; in this way, mirror image generation completely does not depend on operation of a Nandflash controller and a Nandflash corresponding file system. The mirror image programming of the Nandflash can be realized without electrifying a machine; theburning efficiency of a production line is greatly improved; through a software simulation hardware algorithm and improvement of an existing file system offline mirror image manufacturing tool, full automation of offline mirror image manufacturing is achieved, one-time offline programming is conducted through a programmer, a mirror image verification mechanism is added, and the correctness of an offline mirror image is verified through a method of reading back the offline mirror image and comparing 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 Applications(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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