CN105354218A - YAFFS file system based on VxWorks transplantation - Google Patents
YAFFS file system based on VxWorks transplantation Download PDFInfo
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- CN105354218A CN105354218A CN201510630629.9A CN201510630629A CN105354218A CN 105354218 A CN105354218 A CN 105354218A CN 201510630629 A CN201510630629 A CN 201510630629A CN 105354218 A CN105354218 A CN 105354218A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/11—File system administration, e.g. details of archiving or snapshots
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
- G06F16/162—Delete operations
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- Databases & Information Systems (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention discloses a YAFFS file system based on VxWorksK transplantation. The system comprises an I/O drive registry module, a YAFFS device creating module, an FLASH driving module and an I/O interface module, wherein the FLASH driving module comprises: a reading sub-module for reading FLASH; a writing sub-module for writing the FLASH; an erasing sub-module for erasing the FLASH; a bad block identification sub-module for identifying a bad block of the FLASH; and a bad block marking sub-module for marking the bad block of the FLASH; the I/O interface module comprises: a file creating module for opening and creating the FLASH file system; a data writing sub-module for writing in FLASH file system data; a data reading sub-module for reading the FLASH file system data; a closing sub-module for closing the FLASH file system; and an I/O control sub-module for changing offset of a file handle. The YAFFS file system based on VxWorksK transplantation disclosed by the invention solves the problems that high-capacity FLASH cannot be used for carrying out file management under VxWorks, the stability is low and the efficiency is low.
Description
Technical field
The present invention relates to YAFFS file system, particularly relate to a kind of YAFFS file system of transplanting based on VxWorks.
Background technology
In VxWorks 5.5 system, original FLASH file system only has TFFS file system, but it is the file system of 32, do not possess the bad block management that NANDFLASH carries out needed for file management, Internal Management Mode carries out according to the file mode of hard disk (512B is that unit manages) that manage, work efficiency is very low, is not suitable for Large Copacity (being greater than 2GB) and reads and writes the fast NANDFLASH management of rate requirement.
When new bad block appears in NANDFLASH, TFFS cannot recover to reformat, cause like this before stored in File lose, the stability of file system is very low.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of YAFFS file system of transplanting based on VxWorks is provided, Large Copacity NANDFLASH under solving VxWorks, cannot be used to carry out the low and inefficient problem of file management, stability.
The object of the invention is to be achieved through the following technical solutions: the YAFFS file system of transplanting based on VxWorks, comprise I/O and drive Registering modules, YAFFS equipment creation module, FLASH driver module and I/O interface module.
Described FLASH driver module comprises:
Read submodule, for the reading of FLASH;
Write submodule, for the write of FLASH;
Erasing submodule, for the erasing of FLASH;
Bad block recognin module, for identifying the bad block of FLASH;
Bad block identification submodule, for identifying the bad block of FLASH.
Described I/O interface module comprises:
Document creation submodule, for opening and create FLASH file system;
Data write submodule, for writing FLASH file system data;
Data reading submodule, for reading FLASH file system data;
Close closed submodule, for closing FLASH file system;
I/O controls submodule, for changing the side-play amount of file handle, obtaining the side-play amount of file handle, establishment file path, deleted file path, obtaining file path information and file system detection.
Described YAFFS file system is the file system of 64 bit wides.
Described FLASH driver module comprises at least one in NANDFLASH driver module and NORFLASH driver module.
The invention has the beneficial effects as follows:
1, the present invention supports the NANDFLAS file management of Large Copacity (being greater than 2BG), therefore, it is possible to support more NANDFLASH;
2, the present invention comprises bad block identification module and bad block identification module, can carry out bad block management, prevents from causing file system to be lost because NANDFLASH block damages, thus improves the stability of file system;
3, the present invention is that unit manages according to the storage format of NANDFLASH, improves the operating efficiency of file system, thus promote the writing rate of file;
4, the present invention can use the normative document handling function of VxWorks to carry out file operation;
5, the present invention can use the FTPSERVER assembly of VxWorks, is logged into line operate by long-range FTPClient;
6, the present invention is the file system of 64 bit wides, supports the NANDFLASH being greater than 4GB, operates according to the storage organization of NANDFLASH.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention is based on the YAFFS file system that VxWorks is transplanted;
Fig. 2 is the schematic diagram that in Fig. 1, I/O controls the function that submodule yaff2_ioctl comprises.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As depicted in figs. 1 and 2, based on the YAFFS file system that VxWorks is transplanted, comprise I/O and drive Registering modules, YAFFS equipment creation module, NANDFLASH driver module and I/O interface module.
Described NANDFLASH driver module comprises:
Read submodule yflash2_ReadChunk, for the reading of NANDFLASH;
Write submodule yflash2_WriteChunk, for the write of NANDFLASH;
Erasing submodule yflash2_EraseBlock, for the erasing of NANDFLASH;
Bad block recognin module yflash2_CheckBad, for identifying the bad block of NANDFLASH; Bad block recognin module carry out bad block know method for distinguishing be: erasing NANDFLASH, the SPARE space of first page first character joint be 0XFF be bad block.
Bad block identification submodule yflash2_MarkBad, for identifying the bad block of NANDFLASH.The method that bad block identification submodule carries out bad block identification is: the value of the non-zero XFF of first character joint write in the SPARE space of the first page of bad block.
Described I/O interface module comprises:
Document creation submodule yaffs2_open, for opening and create NANDFLASH file system;
Data write submodule yaffs2_write, for writing NANDFLASH file system data;
Data reading submodule yaffs2_read, for reading NANDFLASH file system data;
Close closed submodule yaffs2_close, for closing NANDFLASH file system;
I/O controls submodule yaffs2_ioctl, for changing the side-play amount of file handle, obtaining the side-play amount of file handle, establishment file path, deleted file path, obtaining file path information and file system detection.
Described YAFFS file system is the file system of 64 bit wides.
The invention discloses the YAFFS file system of transplanting based on VxWorks, it supports the file system of 64 bit wides, the NANDFLASH that capacity is very large can be supported, read-write operates according to the base unit (page) of NANDFLASH, storage efficiency is high, effectively can support the bad block management of NANDFLASH, stability is high, thus uses NANDFLASH not support Large Copacity, without bad block management, problem that execution efficiency is low as file system storage medium under solving VxWorks.
In the present invention, the nucleus module of YAFFS file system is NANDFLASH driver module, but this NANDFLASH driver module can not directly use under VxWorks system, therefore, I/O interface module is with the addition of in the present invention, I/O interface module comprises the standard I/O interface function of VxWorks system, removes by the standard I/O interface function of VxWorks system the interface function calling NANDFLASH driver module.
The above is only the preferred embodiment of the present invention, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (3)
1. based on the YAFFS file system that VxWorks is transplanted, it is characterized in that: comprise I/O and drive Registering modules, YAFFS equipment creation module, FLASH driver module and I/O interface module;
Described FLASH driver module comprises:
Read submodule, for the reading of FLASH;
Write submodule, for the write of FLASH;
Erasing submodule, for the erasing of FLASH;
Bad block recognin module, for identifying the bad block of FLASH;
Bad block identification submodule, for identifying the bad block of FLASH;
Described I/O interface module comprises:
Document creation submodule, for opening and create FLASH file system;
Data write submodule, for writing FLASH file system data;
Data reading submodule, for reading FLASH file system data;
Close closed submodule, for closing FLASH file system;
I/O controls submodule, for changing the side-play amount of file handle, obtaining the side-play amount of file handle, establishment file path, deleted file path, obtaining file path information and file system detection.
2. YAFFS file system of transplanting based on VxWorks according to claim 1, is characterized in that: described YAFFS file system is the file system of 64 bit wides.
3. YAFFS file system of transplanting based on VxWorks according to claim 1, is characterized in that: described FLASH driver module comprises at least one in NANDFLASH driver module and NORFLASH driver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630629.9A CN105354218A (en) | 2015-09-29 | 2015-09-29 | YAFFS file system based on VxWorks transplantation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630629.9A CN105354218A (en) | 2015-09-29 | 2015-09-29 | YAFFS file system based on VxWorks transplantation |
Publications (1)
| Publication Number | Publication Date |
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| CN105354218A true CN105354218A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510630629.9A Pending CN105354218A (en) | 2015-09-29 | 2015-09-29 | YAFFS file system based on VxWorks transplantation |
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| CN (1) | CN105354218A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870926A (en) * | 2016-09-26 | 2018-04-03 | 北京信威通信技术股份有限公司 | A kind of method and device of real-time storage |
| CN107870736A (en) * | 2016-09-28 | 2018-04-03 | 龙芯中科技术有限公司 | Support the method and device more than 4GB nandflash |
| CN113742283A (en) * | 2021-07-20 | 2021-12-03 | 电信科学技术第五研究所有限公司 | LINUX operating system-based bad block management method for NANDFLASH file-free system |
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| CN101566953A (en) * | 2009-02-12 | 2009-10-28 | 山东超越数控电子有限公司 | Method for transplanting VXWORKS operating system |
| US20100199026A1 (en) * | 2009-02-04 | 2010-08-05 | Mitac International Corp. | Flash File System and Driving Method Thereof |
| US20130238844A1 (en) * | 2008-04-11 | 2013-09-12 | Junzhi Wang | Method and system for accessing a storage system with multiple file systems |
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2015
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130238844A1 (en) * | 2008-04-11 | 2013-09-12 | Junzhi Wang | Method and system for accessing a storage system with multiple file systems |
| US20100199026A1 (en) * | 2009-02-04 | 2010-08-05 | Mitac International Corp. | Flash File System and Driving Method Thereof |
| CN101566953A (en) * | 2009-02-12 | 2009-10-28 | 山东超越数控电子有限公司 | Method for transplanting VXWORKS operating system |
Non-Patent Citations (1)
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| 张辉: ""基于VxWorks的大容量NAND Flash文件系统研究与实现"", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870926A (en) * | 2016-09-26 | 2018-04-03 | 北京信威通信技术股份有限公司 | A kind of method and device of real-time storage |
| CN107870736A (en) * | 2016-09-28 | 2018-04-03 | 龙芯中科技术有限公司 | Support the method and device more than 4GB nandflash |
| CN107870736B (en) * | 2016-09-28 | 2021-08-10 | 龙芯中科技术股份有限公司 | Method and device for supporting non-linear flash memory larger than 4GB |
| CN113742283A (en) * | 2021-07-20 | 2021-12-03 | 电信科学技术第五研究所有限公司 | LINUX operating system-based bad block management method for NANDFLASH file-free system |
| CN113742283B (en) * | 2021-07-20 | 2023-11-24 | 电信科学技术第五研究所有限公司 | NANDFLASH non-file system bad block management method based on LINUX operation system |
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Application publication date: 20160224 |