CN104537075B - Application process of the Yaffs file system in NorFlash - Google Patents
Application process of the Yaffs file system in NorFlash Download PDFInfo
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- CN104537075B CN104537075B CN201410849277.1A CN201410849277A CN104537075B CN 104537075 B CN104537075 B CN 104537075B CN 201410849277 A CN201410849277 A CN 201410849277A CN 104537075 B CN104537075 B CN 104537075B
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- norflash
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- file system
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
- G06F12/023—Free address space management
- G06F12/0238—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory
- G06F12/0246—Memory management in non-volatile memory, e.g. resistive RAM or ferroelectric memory in block erasable memory, e.g. flash memory
-
- 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
- G06F16/18—File system types
- G06F16/1847—File system types specifically adapted to static storage, e.g. adapted to flash memory or SSD
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a kind of application process of Yaffs file system in NorFlash, comprise the following steps：(1) each piece in NorFlash, is divided into some pages；(2), the bottom data random read take program, bottom data random writing program, bottom data for writing out NorFlash with program language according to NorFlash storage device data handbook wipe interface routine by block；(3), said procedure is packaged on bottom data interface according to the size of data field, block size；(4) the data field size of page, block size, data in NorFlash, are read into interface by page, interface is write by page, are filled into by block erasing interface parameters in the structure of Yaffs file system.This method will can be not easy to be applied in NorFlash storage devices by the factors such as electrostatic, frequent power-on and power-off interference Yaffs file system.
Description
Technical field
The present invention relates to a kind of file system that can be applied in NorFlash storage devices, is especially a kind of
Application process of the Yaffs file system in NorFlash.
Background technology
It is a kind of conventional Product development plan that vxworks operating system, which carries NorFlash storage devices,.It is existing
In VxWorks kernel using it is most wide be dosFS file system.But in the actual motion of product, due to dosFS files
System is more fragile in itself, therefore is easily influenceed by factors such as electrostatic interference, frequent power-on and power-off and cause the dosFS texts of VxWorks
The file information table damage of part system, so as to cause whole dosFS file system corruptions, file is lost, and then influences VxWorks
The normal operation of operating system.Therefore, for these reasons, it would be highly desirable to need a kind of Yaffs file system in NorFlash
Application process, this method will can be not easy to be applied by the factors such as electrostatic, frequent power-on and power-off interference Yaffs file system
In NorFlash storage devices, to solve the above problems.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of application process of Yaffs file system in NorFlash,
This method can will be not easy to be applied by the factors such as electrostatic, frequent power-on and power-off interference Yaffs file system and be set in NorFlash storages
In standby.
The technical scheme is that, there is provided a kind of application process of Yaffs file system in NorFlash, including with
Lower step：
(1) each piece in NorFlash, is divided into some pages, every page includes data field and idle domain；
(2), according to NorFlash storage device data handbook with program language write out NorFlash bottom data with
Machine-readable program fetch, bottom data random writing program, bottom data are by block erasing interface routine；
(3), according to the size of data field, block size on bottom data interface by bottom data random read take program, bottom
Layer data random writing program, bottom data by block erasing interface routine be packaged, with realize data can be read by page, by
Page write-in, is wiped by block；
The data field size of page, block size, data in NorFlash (4), are read into interface by page, interface is write by page,
It is filled into by block erasing interface parameters in the structure of Yaffs file system.
After above method, the present invention compared with prior art, has advantages below：
Application process application of the Yaffs file system of the present invention in NorFlash be not easy to be disturbed by electrostatic, frequently on
The Yaffs file system that the factors such as lower electricity influence, because the characteristics of Yaffs file system is meeting after file information table is damaged
Going to scan whole NorFlash equipment, the file that will identify that is re-recorded in literary information table, i.e., file will not be caused to lose,
Therefore Yaffs can ensure to complete to search the file information table of Yaffs file system rapidly and extensive under the influence of above-mentioned factor
It is multiple, so as to ensure the normal operation of whole Yaffs file system, and then it ensure that the normal operation of vxworks operating system.
Embodiment
With reference to specific embodiment, the invention will be further described.
The Yaffs file system for aiming at NandFlash exploitations is applied to NorFlash.
Difference maximum NandFlash and NorFlash is：NandFlash allows have bad block；NandFlash minimum numbers
It is page according to unit, every page includes data field and idle domain, and data field is real data, and idle domain includes bad block message, school
Information etc. is tested, for bad block management.NandFlash data manipulations are read by page, are write by page, are wiped by block.And
NorFlash minimum data unit is block, and data manipulation supports random read take, random writing, data wiped by block.Therefore, will
Yaffs file system is applied to NorFlash, and key is that NorFlash improves NandFlash data unit structure.
A kind of application process of the Yaffs file system of the present invention in NorFlash, comprises the following steps：
(1) each piece in NorFlash, is divided into some pages, every page includes data field and idle domain；If
NandFlash data field and idle domain is divided into 512 bytes and 16 bytes, then one piece of NorFlash, Ke Yiji for 64K bytes
Calculate each piece and include page 124.
(2), according to NorFlash storage device data handbook with program language write out NorFlash bottom data with
Machine-readable program fetch, bottom data random writing program, bottom data are by block erasing interface routine；Typically write out using C language
Program is stated, that is, those of ordinary skill in the art can compile out according to the rule of NorFlash storage device data handbooks
Said procedure, because bottom data random read take program, bottom data random writing program, bottom data are by block erasing interface journey
The literary style of sequence is varied, and the program that different programming persons writes out is diversified, therefore will not be described in detail herein.
(3), according to the size of data field, block size on bottom data interface by bottom data random read take program, bottom
Layer data random writing program, bottom data by block erasing interface routine be packaged, with realize data can be read by page, by
Page write-in, is wiped by block；It can realize that data are read in NorFlash storage devices by page by the program or software of encapsulation
Take, write by page, wiped by block.
The data field size of page, block size, data in NorFlash (4), are read into interface by page, interface is write by page,
It is filled into by block erasing interface parameters in the structure of Yaffs file system.Bottom data random read take program, bottom data with
Machine write-in program, bottom data can read corresponding number by block erasing interface routine according to the structure of Yaffs file system
According to.
Only highly preferred embodiment of the present invention is described above, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above example, and its concrete structure allows to change.In every case in the protection model of independent claims of the present invention
It is within the scope of the present invention to enclose interior made various change.
Claims (1)
- A kind of 1. application process of Yaffs file system in NorFlash, it is characterised in that：Comprise the following steps：(1) each piece in NorFlash, is divided into some pages, every page includes data field and idle domain；(2) NorFlash bottom data random write, is write out with program language according to NorFlash storage device data handbook Program fetch, bottom data random writing program, bottom data are by block erasing interface routine；(3), according to the size of data field, block size on bottom data interface by bottom data random read take program, bottom number It is packaged according to random writing program, bottom data by block erasing interface routine, to realize that data can be read by page, write, Wiped by block；(4) the data field size of page, block size, data in NorFlash, are read into interface by page, interface are write by page, by block Erasing interface parameters is filled into the structure of Yaffs file system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849277.1A CN104537075B (en) | 2014-12-30 | 2014-12-30 | Application process of the Yaffs file system in NorFlash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849277.1A CN104537075B (en) | 2014-12-30 | 2014-12-30 | Application process of the Yaffs file system in NorFlash |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104537075A CN104537075A (en) | 2015-04-22 |
| CN104537075B true CN104537075B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410849277.1A Active CN104537075B (en) | 2014-12-30 | 2014-12-30 | Application process of the Yaffs file system in NorFlash |
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Families Citing this family (1)
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127004A (en) * | 2007-09-24 | 2008-02-20 | 中兴通讯股份有限公司 | System and method for accessing data on flash memory |
| CN101364166A (en) * | 2008-09-23 | 2009-02-11 | 杭州华三通信技术有限公司 | Method and device for simulating Nand flash of 2048 byte page into hard disk |
| CN101539891A (en) * | 2008-03-17 | 2009-09-23 | 凤凰微电子（中国）有限公司 | Embedded type flash memory, storage system and method for power fail safeguard of data |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8312204B2 (en) * | 2009-01-23 | 2012-11-13 | Seagate Technology Llc | System and method for wear leveling in a data storage device |
-
2014
- 2014-12-30 CN CN201410849277.1A patent/CN104537075B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127004A (en) * | 2007-09-24 | 2008-02-20 | 中兴通讯股份有限公司 | System and method for accessing data on flash memory |
| CN101539891A (en) * | 2008-03-17 | 2009-09-23 | 凤凰微电子（中国）有限公司 | Embedded type flash memory, storage system and method for power fail safeguard of data |
| CN101364166A (en) * | 2008-09-23 | 2009-02-11 | 杭州华三通信技术有限公司 | Method and device for simulating Nand flash of 2048 byte page into hard disk |
Non-Patent Citations (1)
| Title |
|---|
| 基于容错CAN总线的车载多功能显示终端的研究与设计;徐平霞;《中国优秀硕士学位论文全文数据库 信息科技辑》;20110915(第9期);第16页 * |
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| CN104537075A (en) | 2015-04-22 |
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Owner name: NINGBO SANXING INTELLIGENT ELECTRIC CO., LTD. Free format text: FORMER OWNER: NINGBO SANXING ELECTRIC CO., LTD. Effective date: 20150513 |
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Effective date of registration: 20150513 Address after: 315034 Ningbo, Jiangbei District, Zhejiang City, the town of Maple Bay Road, No. 16 Applicant after: Ningbo Samsung intelligent electric company limited Address before: 315131, AUX Industrial Park, Mingguang North Road, Jiangshan Town, Ningbo, Yinzhou District, Zhejiang 1166, China Applicant before: Ningbo Sanxing Electric Co., Ltd. |
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Effective date of registration: 20160129 Address after: 315191 Yinzhou Industrial Park, Zhejiang, Ningbo, Yinzhou District, Ningbo Applicant after: NINGBO SANXING MEDICAL ELECTRIC CO., LTD. Address before: 315034 Ningbo, Jiangbei District, Zhejiang City, the town of Maple Bay Road, No. 16 Applicant before: Ningbo Samsung intelligent electric company limited |
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