CN103412779B - A kind of patch file network system realization of embedded real-time operating system - Google Patents
A kind of patch file network system realization of embedded real-time operating system Download PDFInfo
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- CN103412779B CN103412779B CN201310351780.XA CN201310351780A CN103412779B CN 103412779 B CN103412779 B CN 103412779B CN 201310351780 A CN201310351780 A CN 201310351780A CN 103412779 B CN103412779 B CN 103412779B
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Abstract
The invention discloses the patch file network system realization of a kind of embedded real-time operating system, comprise the steps: S10: set up patch system table, patch collection table and patch information table；S11: choose patch file and deposit base address；S12: distribute page space number according to the size of patch file;S13: after distribution page space counts up to into, check the positional information in page space；S14: write patch file in the space of distribution；S15: after write patch file, update the patch collection table of this patch respective modules.The present invention can be rapidly completed depositing and read operation of patch file by above-mentioned embedded real-time operating system patch file system；Wherein, patch file presses page size allocation space, drastically reduce the area the waste of memory space；And carry out block erasing as required, maximize the erasing times reducing Nand Flash, increase the service life.
Description
Technical field
The invention belongs to field of embedded technology, relate to the patch file system of a kind of embedded real-time operating system
Implementation method.
Background technology
In embedded real-time operating system, if needing to realize dynamically more New function, patch file system will be related to
The design of system and realization.Present embedded board outside storage major part is to use Nand Flash.Nand Flash has
So one feature, the least unit writing data is page (page, 2KB), erasing data least unit be block (block,
128KB, a block is typically made up of 64 pages).
Traditional patch file system, in order to conveniently realize emptying of memory space before write patch data, uses one
Individual block deposits single patch file, and this causes the waste of Flash memory space greatly.
Secondly, Nand Flash block erasing times is restricted, and exceeding maximum erasing times will scrap, traditional patch literary composition
Part system relates to wiping frequently block, and system will be brought serious loss by this.
It addition, all patch files are according to write Nand Flash time sequencing storage, when needs use a certain patch,
Need to travel through whole patch system table, cause time complexity high.
The defect existed for above-mentioned prior art, is necessary to develop research in fact, to provide a kind of scheme, overcomes biography
The system shortcoming that patch file system space expense is big, system loss is big and time complexity is high.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide the patch file system of a kind of embedded real-time operating system
System implementation method, can be rapidly completed depositing and read operation of patch file, drastically reduce the area the waste of memory space, and
Bigization reduces the erasing times of Nand Flash, increases the service life.
For achieving the above object, the technical scheme is that
The patch file network system realization of a kind of embedded real-time operating system, comprises the steps:
S10: set up patch system table according to refreshable module number, and set up benefit according to each module most patch release number
Fourth collection table, sets up patch information table；
S11: choose patch file and deposit base address；
S12: distribute page space number according to the size of patch file；
S13: after distribution page space counts up to into, check the positional information in page space；
S14: write patch file in the space of distribution；
S15: after write patch file, update the patch collection table of this patch respective modules.
Further, in step S11, described patch file deposits the starting point that base address is mono-block of Nand Flash
Location.
Further, in step S12, described page space number is the minimum number of pages that can deposit patch file.
Further, in step S13, if newly assigned page space is all at current block, now need not wipe next block；
If front and back, space has in newly assigned page space, now need to wipe next block；If newly assigned page space all under
One block, now needs to wipe next block.
Further, when needs use certain version patch, first pass through patch system table and quickly navigate to this patch pair
Answer the patch collection table of module, quickly navigate to the patch information table of this version patch then according to patch collection table, then lead to
Cross patch information table to get this version patch and deposit first address in Nand Flash, finally call read operation and read this benefit
Fourth file
Compared to prior art, the patch file network system realization of a kind of embedded real-time operating system of the present invention passes through
Above-mentioned embedded real-time operating system patch file system can be rapidly completed depositing and read operation of patch file；Wherein,
Patch file presses page size allocation space, drastically reduce the area the waste of memory space；And carry out block erasing as required,
Bigization reduces the erasing times of Nand Flash, increases the service life.
Accompanying drawing explanation
Fig. 1 is the flow process diagram of the present invention.
Fig. 2 is that the page space of the distribution of the present invention is all at the schematic diagram of current block.
Fig. 3 is the schematic diagram that former and later two blocks of page space of the distribution of the present invention have.
Fig. 4 is that the page space of the distribution of the present invention is all at the schematic diagram of later block.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As it is shown in figure 1, the patch file network system realization of a kind of embedded real-time operating system of the present invention, including as follows
Step:
S10: set up patch system table according to refreshable module number, and set up benefit according to each module most patch release number
Fourth collection table, sets up patch information table；
S11: choose patch file and deposit base address, wherein, this address is the initial address of mono-block of Nand Flash；
S12: distribute the page space number of Nand Flash according to the size of patch file, this page of space number is for can deposit patch
The minimum number of pages of file;
S13: after distribution page space counts up to into, check the positional information in page space；Wherein, when newly assigned page space all
At current block, now need not wipe next block；If front and back, space has in newly assigned page space, now need under erasing
One block；If newly assigned page space is all at next block, now need to wipe next block；
S14: write patch file in the Nand Flash space of distribution；
S15: after write patch file, update the patch collection table of this patch respective modules.
When needs use certain version patch, first pass through patch system table and quickly navigate to the benefit of this patch respective modules
Fourth collection table, quickly navigates to the patch information table of this version patch, then passes through patch information then according to patch collection table
Table gets this version patch and deposits first address in Nand Flash, finally calls read operation and reads this patch file.
As one embodiment of the invention, as shown in table 1, setting up patch system table according to refreshable module number, including can
More new module numbering and this module patch collection table.
As shown in table 2, set up patch collection table according to each module most patch release number, include patch release number with
And this version patch information.
As shown in table 3, set up patch information table, including field and the implication of this field.
Choosing patch file and deposit base address, this address is necessary for the initial address of a block.When patch literary composition deposited by needs
During part, distributing the page space number of Nand Flash according to the size of patch file, this page of space number is to deposit patch file
Minimum number of pages.Such as when patch file is 3.5KB, it is necessary to distribute 2 page spaces.After being assigned, check page space
Positional information, wherein, point following three kinds of situations: as in figure 2 it is shown, newly assigned page space is all at current block, now need not
The next block of erasing；As it is shown on figure 3, front and back, space has in newly assigned page space, now need to wipe next block；Such as figure
Shown in 4, newly assigned page space, all at next block, now needs to wipe next block.
Writing patch file in the Nand Flash space of distribution, after write patch file data, needs update should
The patch collection table of patch respective modules.If desired certain version patch, first patch system table is used quickly to navigate to this patch
The patch collection table of respective modules, quickly navigates to the patch information table of this version patch, then then according to patch collection table
Getting this version patch by patch information table and deposit first address in Nand Flash, finally calling that read operation reads should
Patch file.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (2)
1. the patch file network system realization of an embedded real-time operating system, it is characterised in that comprise the steps:
S10: set up patch system table according to refreshable module number, and set up patch collection according to each module most patch release number
Close table, set up patch information table；
S11: choosing patch file and deposit base address, described patch file deposits the initial address that base address is a block；
S12: distributing page space number according to the size of patch file, described page space number is the minterm that can deposit patch file
Number；
S13: after distribution page space counts up to into, check the positional information in page space, if newly assigned page space is all at current block,
Now need not wipe next block；If front and back, space has in newly assigned page space, now need to wipe next block；If
Newly assigned page space, all at next block, now needs to wipe next block；
S14: write patch file in the space of distribution；
S15: after write patch file, update the patch collection table of this patch respective modules.
2. the patch file network system realization of embedded real-time operating system as claimed in claim 1, it is characterised in that: when needing
When using certain version patch, first pass through patch system table and quickly navigate to the patch collection table of this patch respective modules, connect
The patch information table quickly navigating to this version patch according to patch collection table, then get this version by patch information table
This patch deposits first address in Nand Flash, finally calls read operation and reads this patch file.
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| CN201310351780.XA CN103412779B (en) | 2013-08-14 | 2013-08-14 | A kind of patch file network system realization of embedded real-time operating system |
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| CN201310351780.XA CN103412779B (en) | 2013-08-14 | 2013-08-14 | A kind of patch file network system realization of embedded real-time operating system |
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| CN103412779A CN103412779A (en) | 2013-11-27 |
| CN103412779B true CN103412779B (en) | 2016-12-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645917B (en) * | 2013-12-03 | 2016-09-14 | 北京中电华大电子设计有限责任公司 | The Java code patch method of Java card |
| CN110333885B (en) * | 2019-06-28 | 2022-11-01 | 兆讯恒达科技股份有限公司 | Method for setting patch of embedded operating system |
| CN110888654A (en) * | 2019-11-13 | 2020-03-17 | 重庆秦嵩科技有限公司 | Method for upgrading embedded operating system |
| CN110928570A (en) * | 2019-11-27 | 2020-03-27 | 北京知道创宇信息技术股份有限公司 | Firmware upgrading method and device and readable storage medium |
Citations (3)
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|---|---|---|---|---|
| CN101140586A (en) * | 2007-09-30 | 2008-03-12 | 浙江大学 | Method for building file systems on NAND flash memory in embedded system |
| CN102841851A (en) * | 2012-07-19 | 2012-12-26 | 深圳市江波龙电子有限公司 | Flash memory management method and flash memory device |
| CN102955741A (en) * | 2011-08-30 | 2013-03-06 | 联咏科技股份有限公司 | Memorizer device and writing method thereof |
-
2013
- 2013-08-14 CN CN201310351780.XA patent/CN103412779B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140586A (en) * | 2007-09-30 | 2008-03-12 | 浙江大学 | Method for building file systems on NAND flash memory in embedded system |
| CN102955741A (en) * | 2011-08-30 | 2013-03-06 | 联咏科技股份有限公司 | Memorizer device and writing method thereof |
| CN102841851A (en) * | 2012-07-19 | 2012-12-26 | 深圳市江波龙电子有限公司 | Flash memory management method and flash memory device |
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