CN101149699A - Method for reliably acquiring abnormal and repositioning information - Google Patents
Method for reliably acquiring abnormal and repositioning information Download PDFInfo
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- CN101149699A CN101149699A CNA2006100627526A CN200610062752A CN101149699A CN 101149699 A CN101149699 A CN 101149699A CN A2006100627526 A CNA2006100627526 A CN A2006100627526A CN 200610062752 A CN200610062752 A CN 200610062752A CN 101149699 A CN101149699 A CN 101149699A
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Abstract
The invention relates to a method of access to abnormal and reset information, which is used in embedded systems, and which includes pre-determining a memory that can't operated by embedded system and users in memory of embedded system; not loading to CPU internal cache when booting embedded system; depositing abnormal information into the memory when embedded system is detected abnormal; depositing reset information into the memory when embedded system resets; accessing to abnormal and reset information after embedded system resets and reboots. The invention ensures to reliably access to abnormal and reset information, and its cost is low.
Description
Technical field
What the present invention relates to is at real time embedded system, relates in particular to the method for reliably acquiring abnormal and repositioning information in the embedded system.
Background technology
At present, can occur various unusually and reset in the embedded system unavoidably,, in embedded system, need to obtain the method for unusual and repositioning information in order to obtain these unusual and reset specifying informations.In the prior art or be when taking place unusual or resetting, information to be reported to the backstage at once; Be temporarily to be stored on the ROM (read-only memory) such as flash, in needs, obtain the foreground again from the backstage and be stored in data the flash.All there is certain defective in these methods: previous method because take place unusual and when resetting system be in a kind of non-steady state, unusual and reporting of repositioning information may be failed, and causes losing of information; The shortcoming of the method in back is cost height (needing ROM (read-only memory) devices such as flash), and the less stable of ROM (read-only memory) such as flash itself, is reading and is writing unusually and failing easily during repositioning information and causing some other system problem.Because the write operation life-span of ROM (read-only memory) such as flash is limited, long-time repeatable operation may cause device failure in addition.
Summary of the invention
It is a kind of by obtaining the method for unusual and repositioning information that the technical problem to be solved in the present invention is to provide, and guarantee reliably obtaining of unusual and repositioning information, and cost is low.
For realizing the technical problem to be solved in the present invention, the present invention is a kind of to be applied to embedded system by obtaining the method for unusual and repositioning information, and it comprises.
1) pre-determine an internal memory in embedded system memory, this piece internal memory is not embedded into the formula system and uses;
Dispose this piece memory attribute when 2) embedded system starts for can not cache (CPU internal cache);
3) when the detection embedded system is unusual, abnormal information is deposited in this piece internal memory; When embedded system resets, repositioning information is deposited in this piece internal memory;
4) embedded system reset restart after, from this piece internal memory, obtain unusual and repositioning information.
Above-mentioned method in the affiliated step 3, deposits described abnormal information in this piece internal memory in by abnormality processing function; By in the system reset function described repositioning information being deposited in this piece internal memory, described repositioning information comprises the concrete reason and the caller of system reset.
Above-mentioned method, step 3) also comprises: to being stored in this piece internal memory unusual and repositioning information carries out CRC calculating, and CRC result of calculation is deposited in this piece internal memory.
Above-mentioned method in the step 4), after embedded system resets and restarts, is obtained CRC result of calculation from this piece internal memory, carry out CRC check, if verification is by obtaining unusual and repositioning information from this piece internal memory.
The present invention has adopted the unusual and repositioning information of a pre-configured memory embedded system, compared with prior art, saved cost, guaranteed the reliability of unusual and repositioning information, be used for locating the reason that takes place unusually with the fault that resets thereby obtain effective anomaly and repositioning information.
Description of drawings
Fig. 1 is the embedded system hardware structural representation.
Fig. 2 is the inventive method schematic flow sheet.
Embodiment
Below in conjunction with accompanying drawing the present invention is done detailed explanation.
The present invention utilizes a characteristic of internal memory in the embedded system: the data that are retained in the internal memory before and after resetting can not lost, unusual and repositioning information before resetting, system are retained in earlier in " reserved memory " of system, " reserved memory " refers to pre-determine an internal memory (reserve area) in embedded system memory, this piece internal memory is not embedded into the formula system and uses, and be can not cache region of memory, can not be meant that the content in this piece internal memory can not be loaded onto in the CPU internal cache by cache.Embedded system restart stable after, will reset again and abnormal information is delivered to the backstage communication apparatus by transmission from the foreground communication apparatus, thereby specifying information unusual or when resetting to take place.Reserved memory can be by being that internal memory realizes that through the software special processing this piece internal memory has following characteristic: must be can not cache region of memory, must be the internal memory that embedded system can not be used.
Fig. 1 is a kind of embedded system hardware structural representation, and a common embedded system that Here it is comprises CPU, AM/BAM communication facilities and internal memory.
Fig. 2 is the inventive method schematic flow sheet.At first in Installed System Memory, keep one and can not be embedded into the internal memory (reserve area) that the formula system uses; Be set to can not cahce for the attribute of this piece internal memory then; The abnormality processing function catching exception is set; In abnormality processing function, obtain concrete abnormal information and be kept in this good piece internal memory of former configuration; In the reset processing function, information such as the concrete reason of system reset and caller are kept in this good piece internal memory of former configuration; Unusual and repositioning information in this piece internal memory is carried out CRC (CRC) calculating, and the CRC result calculated is deposited end at this piece internal memory of this piece.After system restart, if reserved memory is carried out CRC check by illustrating that this is that last time is unusual and preserve the information of getting off when resetting, the information that is kept in the reserved memory is reported to the backstage communication apparatus, or the normal back of system operation initiatively sends a command to the foreground communication apparatus by the backstage communication apparatus and goes to obtain information in the reserved memory.If CRC check is not by just not doing any operation.
This method is simple, practical, and highly versatile can obtain in the embedded system by this method reliably about information unusual and that reset, for positioning system takes place unusually to provide powerful help with more great fault such as reset.
Claims (4)
1. one kind by obtaining the method for unusual and repositioning information, is applied to embedded system, and it comprises:
1) pre-determine an internal memory in embedded system memory, this piece internal memory is not embedded into the formula system and uses;
The content that disposes this piece internal memory when 2) embedded system starts can not be loaded onto in the CPU internal cache;
3) when the detection embedded system is unusual, abnormal information is deposited in this piece internal memory; When embedded system resets, repositioning information is deposited in this piece internal memory;
4) embedded system reset restart after, from this piece internal memory, obtain unusual and repositioning information.
2. method according to claim 1 is characterized in that, in the affiliated step 3, by abnormality processing function described abnormal information is deposited in this piece internal memory; By in the system reset function described repositioning information being deposited in this piece internal memory, described repositioning information comprises the concrete reason and the caller of system reset.
3. method according to claim 1 and 2 is characterized in that step 3) also comprises: to being stored in this piece internal memory unusual and repositioning information carries out CRC calculating, and CRC result of calculation is deposited in this piece internal memory.
4. method according to claim 3 is characterized in that, in the step 4), after embedded system resets and restarts, obtains CRC result of calculation from this piece internal memory, carries out CRC check, if verification is by obtaining unusual and repositioning information from this piece internal memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100627526A CN101149699A (en) | 2006-09-21 | 2006-09-21 | Method for reliably acquiring abnormal and repositioning information |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100627526A CN101149699A (en) | 2006-09-21 | 2006-09-21 | Method for reliably acquiring abnormal and repositioning information |
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| CN101149699A true CN101149699A (en) | 2008-03-26 |
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| CNA2006100627526A Pending CN101149699A (en) | 2006-09-21 | 2006-09-21 | Method for reliably acquiring abnormal and repositioning information |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853196A (en) * | 2010-04-21 | 2010-10-06 | 中兴通讯股份有限公司 | Method and device recording exceptional data |
| CN102214130A (en) * | 2010-04-08 | 2011-10-12 | 纬创资通股份有限公司 | Test device and test method |
| CN102521111A (en) * | 2010-11-03 | 2012-06-27 | 微软公司 | Reporting of Intra-Device Failure Data |
| CN104063477A (en) * | 2014-06-30 | 2014-09-24 | 广东威创视讯科技股份有限公司 | Processing method and processing device for startup abnormalities of embedded system |
| CN104699556A (en) * | 2015-03-23 | 2015-06-10 | 广东威创视讯科技股份有限公司 | CRC (Cyclic Redundancy Check) checking method and system of operation system of computer |
| CN106354661A (en) * | 2016-09-13 | 2017-01-25 | 郑州云海信息技术有限公司 | Internal storage distribution method and device for storage software |
| CN107153453A (en) * | 2016-03-04 | 2017-09-12 | 中兴通讯股份有限公司 | A kind of linux system reset processing method and device |
| CN107368403A (en) * | 2017-07-10 | 2017-11-21 | Tcl移动通信科技（宁波）有限公司 | A kind of mobile terminal and its log information output control method and storage medium |
| CN107801064A (en) * | 2016-09-05 | 2018-03-13 | 中国移动通信集团公司 | A kind of method and device of the selfreparing of Multi-screen interaction system |
| CN108536545A (en) * | 2018-03-05 | 2018-09-14 | 广东美的厨房电器制造有限公司 | The information processing method and device of terminal device |
| CN108762961A (en) * | 2018-05-14 | 2018-11-06 | 深圳Tcl新技术有限公司 | Failure retrogressive method, display terminal and the readable storage medium storing program for executing of display terminal |
-
2006
- 2006-09-21 CN CNA2006100627526A patent/CN101149699A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102214130A (en) * | 2010-04-08 | 2011-10-12 | 纬创资通股份有限公司 | Test device and test method |
| CN101853196A (en) * | 2010-04-21 | 2010-10-06 | 中兴通讯股份有限公司 | Method and device recording exceptional data |
| CN102521111A (en) * | 2010-11-03 | 2012-06-27 | 微软公司 | Reporting of Intra-Device Failure Data |
| CN102521111B (en) * | 2010-11-03 | 2015-11-11 | 微软技术许可有限责任公司 | The report of device internal fault data |
| CN104063477A (en) * | 2014-06-30 | 2014-09-24 | 广东威创视讯科技股份有限公司 | Processing method and processing device for startup abnormalities of embedded system |
| CN104063477B (en) * | 2014-06-30 | 2017-08-29 | 广东威创视讯科技股份有限公司 | Embedded system starts abnormal processing method and processing device |
| CN104699556A (en) * | 2015-03-23 | 2015-06-10 | 广东威创视讯科技股份有限公司 | CRC (Cyclic Redundancy Check) checking method and system of operation system of computer |
| CN104699556B (en) * | 2015-03-23 | 2017-12-08 | 广东威创视讯科技股份有限公司 | The operating system CRC check method and system of computer |
| CN107153453A (en) * | 2016-03-04 | 2017-09-12 | 中兴通讯股份有限公司 | A kind of linux system reset processing method and device |
| CN107801064A (en) * | 2016-09-05 | 2018-03-13 | 中国移动通信集团公司 | A kind of method and device of the selfreparing of Multi-screen interaction system |
| CN107801064B (en) * | 2016-09-05 | 2020-08-18 | 中国移动通信集团公司 | Self-repairing method and device for multi-screen interactive system |
| CN106354661A (en) * | 2016-09-13 | 2017-01-25 | 郑州云海信息技术有限公司 | Internal storage distribution method and device for storage software |
| CN107368403A (en) * | 2017-07-10 | 2017-11-21 | Tcl移动通信科技（宁波）有限公司 | A kind of mobile terminal and its log information output control method and storage medium |
| CN108536545A (en) * | 2018-03-05 | 2018-09-14 | 广东美的厨房电器制造有限公司 | The information processing method and device of terminal device |
| CN108536545B (en) * | 2018-03-05 | 2021-07-20 | 广东美的厨房电器制造有限公司 | Information processing method and device for terminal equipment |
| CN108762961A (en) * | 2018-05-14 | 2018-11-06 | 深圳Tcl新技术有限公司 | Failure retrogressive method, display terminal and the readable storage medium storing program for executing of display terminal |
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