CN103678035A - Method for recovering dynamic backup of environmental variable in embedded device - Google Patents
Method for recovering dynamic backup of environmental variable in embedded device Download PDFInfo
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- CN103678035A CN103678035A CN201310556984.7A CN201310556984A CN103678035A CN 103678035 A CN103678035 A CN 103678035A CN 201310556984 A CN201310556984 A CN 201310556984A CN 103678035 A CN103678035 A CN 103678035A
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Abstract
The invention discloses a method for recovering a dynamic backup of an environmental variable in an embedded device. The embedded device comprises a key, an MTD layer interface, a microprocessor and a storage module, a bootloader module, an operating system and a kernel of the operating system are stored in the storage module, and a FLASH idle storage sector where the current environmental variable is written is arranged in the bootloader module. According to the method, a method that a system is recovered by an automatic backup through software is adopted, and development persons can conveniently modify and debug the environmental variable in practical application.
Description
Technical field
The present invention relates to embedded device field, relate in particular to a kind of method that in embedded device, environmental variance dynamic backup recovers.
Background technology
Embedded Linux System application in the exploitation of current electronic product is very extensive, and bootloader in its start-up course is essential.A channel of the communication between bootloader and linux system and coordination is exactly the environmental variance in bootloader.Environmental variance plays a part very important, once environmental variance due to our improperly-configured, or storage lost efficacy etc., tended to cause whole system not start, this situation is often perplexing Embedded Linux System developer, therefore need to make improvement.
Summary of the invention
Technical matters to be solved by this invention is: a kind of method and control method of environmental variance dynamic backup recovery system are provided, and very convenient developer is to the modification of environmental variance and debugging in actual applications.
For solving the problems of the technologies described above, the present invention proposes a kind of method that in embedded device, environmental variance dynamic backup recovers, described embedded device comprises button, MTD layer interface, microprocessor and memory module, stores the kernel of bootloader module, operating system and operating system in described memory module; In described bootloader module, be provided with one for writing the idle memory sector of FLASH of current environment variable; Said method comprising the steps of:
When steps A, start, described microprocessor reads current environment variable by calling MTD layer interface, and this current environment variable is write to the idle memory sector of described FLASH;
In step B, operating system, check the current environment variable that writes the idle memory sector of described FLASH and modify, increase a preorder effective environment address of variable pointer, point to described FLASH free time memory sector;
Step C, described microprocessor detect and judge whether the key-press input of having an agreement;
If so, enter step D after reading the last effective environment variable;
If not, enter step D after reading conventional environmental variance;
Step D, the startup of described microprocessor enter operating system;
It is the last environmental variance that step e, described bootloader module are preserved current environment variable, and current environment variable and backup environment variable are recovered;
Step F, end.
Further, described embedded device also comprises and being connected with microprocessor for waiting for that time delay detects the function Macintosh of agreement key-press input; Before microprocessor detects the key-press input of whether having an agreement in described step C, by function Macintosh, agreement key-press input is waited for to time delay detects.
Further, described operating system adopts embedded Linux operating system.
Technique scheme at least has following beneficial effect: the present invention adopts the method for software automated back-up recovery system, and very convenient developer is to the modification of environmental variance and debugging in actual applications.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the method that in embedded device of the present invention, environmental variance dynamic backup recovers.
Fig. 2 is the FLASH zoned format schematic diagram in the method that in embedded device of the present invention, environmental variance dynamic backup recovers.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Below in conjunction with accompanying drawing, the present invention is described further.
Embedded device in the method that in the embedded device of the embodiment of the present invention, environmental variance dynamic backup recovers comprises button, MTD layer interface, microprocessor and memory module, stores the kernel of bootloader module, linux operating system and linux operating system in memory module; In bootloader module, be provided with one for writing the idle memory sector of FLASH of current environment variable.
As shown in Figure 1 and Figure 2, the method that in embedded device, environmental variance dynamic backup recovers comprises the following steps:
When steps A, start, described microprocessor reads current environment variable by calling MTD layer interface, and this current environment variable is write to the idle memory sector of described FLASH;
In step B, linux operating system, check the current environment variable that writes the idle memory sector of described FLASH and carry out, increase a preorder effective environment address of variable pointer, point to described FLASH free time memory sector;
Step C, described microprocessor detect and judge whether the key-press input of having an agreement;
If had, enter step D after reading the last effective environment variable;
If no, enter step D after reading conventional environmental variance;
Step D, the startup of described microprocessor enter linux operating system;
It is the last environmental variance that step e, described bootloader module are preserved current environment variable, and current environment variable and backup environment variable are recovered;
Step F, end.
As another kind of embodiment, embedded device also comprises and being connected with microprocessor for waiting for that time delay detects the function Macintosh of agreement key-press input; Before microprocessor detects the key-press input of whether having an agreement in above-mentioned steps C, by function Macintosh, agreement key-press input is waited for to time delay detects.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (3)
1. the method that in an embedded device, environmental variance dynamic backup recovers, described embedded device comprises button, MTD layer interface, microprocessor and memory module, stores the kernel of bootloader module, operating system and operating system in described memory module; It is characterized in that: in described bootloader module, be provided with one for writing the idle memory sector of FLASH of current environment variable; Said method comprising the steps of:
When steps A, start, described microprocessor reads current environment variable by calling MTD layer interface, and this current environment variable is write to the idle memory sector of described FLASH;
In step B, operating system, check the current environment variable that writes the idle memory sector of described FLASH and modify, increase a preorder effective environment address of variable pointer, point to described FLASH free time memory sector;
Step C, described microprocessor detect and judge whether the key-press input of having an agreement;
If so, enter step D after reading the last effective environment variable;
If not, enter step D after reading conventional environmental variance;
Step D, the startup of described microprocessor enter operating system;
It is the last environmental variance that step e, described bootloader module are preserved current environment variable, and current environment variable and backup environment variable are recovered;
Step F, end.
2. the method that in embedded device as claimed in claim 1, environmental variance dynamic backup recovers, is characterized in that, described embedded device also comprises and being connected with microprocessor for waiting for that time delay detects the function Macintosh of agreement key-press input; Before microprocessor detects the key-press input of whether having an agreement in described step C, by function Macintosh, agreement key-press input is waited for to time delay detects.
3. the method that in embedded device as claimed in claim 1, environmental variance dynamic backup recovers, is characterized in that, described operating system adopts embedded Linux operating system.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112817607A (en) * | 2020-12-31 | 2021-05-18 | 广州芯德通信科技股份有限公司 | Realization method for accelerating production speed of optical transceiver |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080104395A1 (en) * | 2006-10-30 | 2008-05-01 | Dai David Z | System and method for enhancing environment variable and process option invocation |
CN101727369A (en) * | 2008-10-15 | 2010-06-09 | 英业达股份有限公司 | Method for automatically verifying environment variable settings |
CN101753360A (en) * | 2009-12-16 | 2010-06-23 | 中兴通讯股份有限公司 | Method applying system start-up, parallel management system and application management system |
US20110060897A1 (en) * | 2009-09-08 | 2011-03-10 | Apple Inc. | Device bootup from a nand-type non-volatile memory |
CN102063319A (en) * | 2010-12-30 | 2011-05-18 | 汉柏科技有限公司 | Software updating method |
CN102298545A (en) * | 2011-08-23 | 2011-12-28 | 晨星软件研发(深圳)有限公司 | System startup boot processing method and device |
CN102708001A (en) * | 2012-04-26 | 2012-10-03 | 深圳市九思泰达技术有限公司 | Linux embedded equipment and switching method between user mode and engineering mode |
CN102722394A (en) * | 2012-06-08 | 2012-10-10 | 深圳路迪网络有限公司 | Start upgrading method of embedded equipment |
-
2013
- 2013-11-11 CN CN201310556984.7A patent/CN103678035A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080104395A1 (en) * | 2006-10-30 | 2008-05-01 | Dai David Z | System and method for enhancing environment variable and process option invocation |
CN101727369A (en) * | 2008-10-15 | 2010-06-09 | 英业达股份有限公司 | Method for automatically verifying environment variable settings |
US20110060897A1 (en) * | 2009-09-08 | 2011-03-10 | Apple Inc. | Device bootup from a nand-type non-volatile memory |
CN101753360A (en) * | 2009-12-16 | 2010-06-23 | 中兴通讯股份有限公司 | Method applying system start-up, parallel management system and application management system |
CN102063319A (en) * | 2010-12-30 | 2011-05-18 | 汉柏科技有限公司 | Software updating method |
CN102298545A (en) * | 2011-08-23 | 2011-12-28 | 晨星软件研发(深圳)有限公司 | System startup boot processing method and device |
CN102708001A (en) * | 2012-04-26 | 2012-10-03 | 深圳市九思泰达技术有限公司 | Linux embedded equipment and switching method between user mode and engineering mode |
CN102722394A (en) * | 2012-06-08 | 2012-10-10 | 深圳路迪网络有限公司 | Start upgrading method of embedded equipment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112817607A (en) * | 2020-12-31 | 2021-05-18 | 广州芯德通信科技股份有限公司 | Realization method for accelerating production speed of optical transceiver |
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