Method for manufacturing flash image files and device
A technology of image files and production methods, which is applied in the directions of instruments, electronic digital data processing, input/output to record carriers, etc., can solve the problems of unfavorable equipment manufacturers for rapid development of electronic equipment and unfavorable unified processing, so as to ensure uniformity and reduce The effect of constraints
Active Publication Date: 2013-07-24
LEADCORE TECH
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[0008] Therefore, the existing two ways of making ROM Image are limited by specific NAND flash memory manufacturers, which is not conducive to the unified processing of production, and may need to study the FTL bad block management algorithm (FTL algorithm for short) of different manufacturers, which is not conducive to the rapid development of equipment manufacturers. develop electronic devices
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[0021] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0022] The manufacturing method of the flash memory image file of the present invention mainly utilizes the file to simulate the flash memory drive, converts the FTL layer read and write flash drive into file read and write operations, and finally generates the flash memory image file. In detail, replace the read and write of the flash drive of the portable device with the file operation, use the file read and write to simulate the flash drive, and use a file with all 0XFF content to simulate the entire flash memory.
[0023] Please refer to figure 1 , is a data flow diagram of the flash memory image file making method of the present invention. The invention uses a flash memory image file making device to complete the making process. The device includes a personal computer terminal 10, a portable device terminal 11 and a portable storage uni...
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The invention provides a method for manufacturing flash image files, comprising the following steps that: an NFTL (Nand Flash Transition Layer) module is provided and is a set of basic characteristics of multiple FTL (Flash Transition Layer) algorithms; a flash simulation driving module is provided and comprises simulation files; a data reading module at a personal computer end is provided; a data processing module of portable equipment is provided; the data reading module transmits the original data to the data processing module; the data processing module inputs the original data into the NFTL module; the corresponding FTL algorithms are extracted by the NFTL module to carry out data conversion; the converted data is read and written by the flash simulation driving module; and image files by reading and writing operation are output. The invention also provides a device for manufacturing the flash image files by utilizing the method. An equipment manufacturer does not need to pay attention to the FTL bad block management algorithm of a flash manufacturer, and under the condition that the flash manufacturer does not provide the tool for manufacturing the image files at the personal computer end, the method can be used for generating the image files at the equipment end.
Description
technical field [0001] The invention relates to a flash memory, in particular to a method and device for making an image file of a NAND flash memory. Background technique [0002] NAND flash memory is widely used in portable electronic devices, such as MP3, mobile phones, memory cards, etc., mainly because NAND flash memory is not easy to lose data, stable, low power consumption and good physical shock resistance. An important feature of NAND flash memory is that it must be erased before writing. The operations of NAND flash memory, such as reading, erasing, and writing, need to be realized with the help of specific flash memory management software. Generally, this software is FTL (Flash Translation Layer), which is used to process the sequence of reading, writing, and erasing algorithm. Generally speaking, FTL accepts read and write instructions from upper layers (such as system files), and is responsible for converting logical addresses into physical addresses of flash m...
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IPC IPC(8): G06F11/00G06F3/06
Inventor 朱健安雷杰
Owner LEADCORE TECH