CN105677413A - Multi-partition application post-loading method for comprehensive modularized avionics system - Google Patents
Multi-partition application post-loading method for comprehensive modularized avionics system Download PDFInfo
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- CN105677413A CN105677413A CN201610006723.1A CN201610006723A CN105677413A CN 105677413 A CN105677413 A CN 105677413A CN 201610006723 A CN201610006723 A CN 201610006723A CN 105677413 A CN105677413 A CN 105677413A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44521—Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading
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Abstract
The invention discloses a multi-partition application post-loading method for a comprehensive modularized avionics system. A section of dynamic loading region is set in memory space; the dynamic loading region is divided into a plurality of zones, each zone corresponds to one partition; a response is made to interruption of a certain external event, corresponding application mirror image files are sequentially loaded to the configured dynamic loading region from an external memory medium, working modes of the corresponding partitions are reset to be cold start modes, and the partitions can host application of post-loading and run the application. As the multi-partition post-loading application technology is adopted, in the running process of an IMA system, the application of the corresponding partitions can be loaded selectively according to actual needs, and resources of the IMA system are saved; in addition, the situation that IMA system integration is carried out after construction of real partition application is completed is not needed, and the integration efficiency of the IMA system is improved.
Description
Technical field
The present invention relates to the loading method of subregion application in a kind of comprehensively modularized avionics system, particularly to loading method after a kind of subregion application.
Background technology
Development along with avionics, present generation aircraft progressively adopts the comprehensively modularized avionics system (being called for short IMA system) of advanced person, relative to traditional association type avionics system, IMA system has a lot of advantage, such as saves cost, reduces aircraft own wt, reduces power consumption, shortens the construction cycle, facilitates upgrade maintenance etc. At present, many military, civil aircrafts all have employed IMA framework, as: the A380 of Air Passenger company, B777, B787 of Boeing, F-22, F-35 of US military, and the Comanche helicopter RAH-66 etc. got down from horse. IMA system is mainly made up of two big components, and one is application, and two is IMA module. Application is in order to realize aircraft function, IMA module provides for application and calculates and processing platform, possesses the subregion scheduling of strict periodicity and communication delay, IMA module utilize a kind of highly integrated time/space partition zone environment, host has the other multiple avionics application of different critical level under the shared computing platform, and each is applied in oneself subregion independent operating, does not interfere with each other. A kind of IMA system software architecture of U.S.'s Arinc653 standard specification definition, application layer carries out data communication by the kernel operating system layer of APEX (Application/Execution) interface Yu module. Normally, each application can be loaded in the middle of respective subregion after powering on along with IMA module together, is referred to as static loading process, but is sometimes not intended to application after IMA system start-up and is loaded in its subregion at once, namely runs at once without wishing to application.
Summary of the invention
The goal of the invention of the present invention be in that provide a kind of comprehensively modularized avionics system multi partition application after loading method, can the application in the multiple respective partition of dynamic load according to actual needs after IMA system electrification starts, namely any time after IMA system electrification starts loads the application of any number of subregions, we be called multi partition application after loading technique so that the design of IMA system is more flexible.
The goal of the invention of the present invention is achieved through the following technical solutions:
Loading method after a kind of comprehensively modularized avionics system multi partition application, comprises the steps of
The first step: one section of dynamic load district is set in memory headroom;
Second step: dynamic load zoning is divided into several regions, the corresponding subregion in each region;
3rd step: when IMA system needs to load the application of some or multiple subregion, produce external event and interrupt;
4th step: response external event interrupt, confirms the subregion, Apply Names and the application numbers that need to load;
5th step: the subregion loaded as required obtains physical address and the virtual address of the respective regions in dynamic load district;
6th step: the MMU attribute of the virtual address in dynamic load district is set to writeable;
7th step: the virtual address in dynamic load district is mapped with needing the subregion loading application;
8th step: load application image file to dynamic load district from external memory storage;
9th step: the MMU attribute resetting dynamic load district virtual address is read-only;
Tenth step: the mode of operation that resetting needs to load the subregion of application is cold start mode.
Preferably, described 4th step, to the tenth step, is completed by multi partition application loader. Described multi partition application loader is integrated in the kernel operating system of IMA system.
Preferably, the bottom of described memory headroom stores kernel operating system and memory configurations record.
Preferably, the space in described dynamic load district is more than the summation of the application size loaded after there is a need to.
Compared with prior art, the beneficial effects of the present invention is: owing to have employed loading technique after subregion is applied, IMA system operation can load respective partition application according to actual needs selectively, save IMA system resource, in addition, also without waiting that real subregion application build carries out IMA system synthesis after completing again, improve IMA system synthesis efficiency.
Accompanying drawing explanation
Fig. 1 realizes the structured flowchart of the IMA system of loading method after a kind of comprehensively modularized avionics system multi partition of the present invention is applied.
Fig. 2 is IMA Installed System Memory distribution schematic diagram in the present invention;
Fig. 3 is the schematic flow sheet of loading method after a kind of comprehensively modularized avionics system multi partition application of the present invention. .
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The basic conception of the present invention is: configure one section of dynamic load district in IMA system hardware platform, this dynamic load district is positioned at kernel operating system layer region, independent and each partitioned storage region, its size is more than the summation of the subregion application size loaded after all of needs. The memory address applied by each subregion is adjacent to be mapped to this memory headroom successively. The application image file (such as app2.bin, app3.bin, app4.bin etc.) loaded after needs is left in exterior storage medium (such as moveable magnetic disc, local Flash, long-range PC etc.). Develop a multi partition application loader, it is integrated in kernel operating system as an assembly, when IMA system is run, respond a certain external event to interrupt, this interruption is used for system of informing needs to load the application of some or multiple subregion at the moment, corresponding application image file is loaded into the interim memory headroom configured successively by multi partition application loader from exterior storage medium, and to reset corresponding subregion mode of operation be cold start mode, application that subregion can load after host also runs.
As shown in Figure 1, an IMA system has N number of subregion in the present invention, subregion 1, subregion 2 ..., subregion N, the each self-corresponding application of each subregion host, subregion 1 host applies APP1, and subregion 2 host applies APP2, and subregion N host applies APPN, it is mutual that the application of each subregion carries out information by APEX interface layer and kernel operating system layer, subregion 2, subregion 3 ..., subregion N is designed as dynamic and loads the subregion of application.After IMA system electrification, APP1 is loaded in subregion 1 by the mode of static loading, and other application are not loaded. External memory storage deposits the image file APP2.bin of multiple application, APP3.bin ..., APPN.bin. Multi partition application loader is an assembly of kernel operating system, needs to access at any time external memory storage according to system, one or more application is loaded in the middle of the subregion of correspondence.
After the IMA multi partition shown in Fig. 3 is applied in designing load flow process, what load after specifically describing multi partition application realizes process.
The first step arranges one section of dynamic load district P in memory headroom.
Second step by dynamic load district P and subregion 2, subregion 3 ..., subregion N address map. In Memory Allocation schematic diagram as shown in Figure 2, kernel operating system and memory configurations record are positioned at the bottom of memory address. Dynamic load district is divided into several regions, and each region is used for loading a subregion application, and the initial address in dynamic load district is corresponding with APP2, and other apply arranged adjacent successively.
3rd step one multi partition application loader of design, namely when notice system is loading the application of one or more subregion.
4th step is after confirmation needs loading subregion application, and subregion, Apply Names and the application numbers clearly loaded, here to load subregion 2 and the application of subregion N.
5th step obtains the physical address of P and obtains its corresponding virtual address, in order to configure its MMU attribute.
The MMU attribute of this virtual address is set to writeable by the 6th step so that can this section of region of memory be covered.
7th step carries out the virtual address of the corresponding subregion 2 of P and maps.
8th step loads subregion 2 from external memory storage and applies image file APP2.bin.
9th step carries out the virtual address of the corresponding subregion N of P and maps.
Tenth step loads subregion N application image file APPN.bin from external memory storage.
11st step resets the MMU attribute of the corresponding Virtual Space of P.
It is cold start mode that 12nd step resets the mode of operation of subregion 2.
It is cold start mode that 13rd step resets the mode of operation of subregion N.
It is understood that for those of ordinary skills, it is possible to it is equal to replacement according to technical scheme and inventive concept thereof or is changed, and all these are changed or replace the scope of the claims that all should belong to appended by the present invention.
Claims (4)
1. a loading method after the application of comprehensively modularized avionics system multi partition, comprises the steps of
The first step: one section of dynamic load district is set in memory headroom;
Second step: dynamic load zoning is divided into several regions, the corresponding subregion in each region;
3rd step: when IMA system needs to load the application of some or multiple subregion, produce external event and interrupt;
4th step: response external event interrupt, confirms the subregion, Apply Names and the application numbers that need to load;
5th step: the subregion loaded as required obtains physical address and the virtual address of the respective regions in dynamic load district;
6th step: the MMU attribute of the virtual address in dynamic load district is set to writeable;
7th step: the virtual address in dynamic load district is mapped with needing the subregion loading application;
8th step: load application image file to dynamic load district from external memory storage;
9th step: the MMU attribute resetting dynamic load district virtual address is read-only;
Tenth step: the mode of operation that resetting needs to load the subregion of application is cold start mode.
2. loading method after comprehensively modularized avionics system multi partition according to claim 1 application, it is characterised in that described 4th step, to the tenth step, is completed by multi partition application loader.
3. loading method after comprehensively modularized avionics system multi partition according to claim 2 application, it is characterised in that described multi partition application loader is integrated in the kernel operating system of IMA system.
4. loading method after comprehensively modularized avionics system multi partition according to claim 1 application, it is characterised in that the space in described dynamic load district is more than the summation of the application size loaded after there is a need to.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106528445A (en) * | 2016-08-17 | 2017-03-22 | 中国航空工业集团公司西安飞行自动控制研究所 | Flight control computer partition variable self-adaption monitoring and exciting method |
| CN107526587A (en) * | 2017-08-02 | 2017-12-29 | 中国航空无线电电子研究所 | A kind of construction method of comprehensively modularized avionics system |
| CN108008969A (en) * | 2017-12-28 | 2018-05-08 | 新华三技术有限公司 | A kind of method for upgrading software version, device and the network equipment |
| CN108628643A (en) * | 2018-03-30 | 2018-10-09 | 深圳市伟文无线通讯技术有限公司 | SCM system method for loading software |
| CN110515593A (en) * | 2019-07-11 | 2019-11-29 | 北京机电工程研究所 | A kind of aircraft avionics system framework |
| CN112328331A (en) * | 2020-11-30 | 2021-02-05 | 中国航空工业集团公司西安航空计算技术研究所 | Method and device for replacing applications in partition mode |
| CN113094119A (en) * | 2021-04-28 | 2021-07-09 | 杭州国芯科技股份有限公司 | Embedded equipment program dynamic loading method |
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| US20130275683A1 (en) * | 2011-08-29 | 2013-10-17 | Intel Corporation | Programmably Partitioning Caches |
| CN104866355A (en) * | 2015-05-29 | 2015-08-26 | 中国航空无线电电子研究所 | Application diversity design method applied to IMA System |
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| CN1434940A (en) * | 1999-12-10 | 2003-08-06 | 霍尼韦尔国际公司 | Two-Layer operating system and method for avionics software applications |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106528445A (en) * | 2016-08-17 | 2017-03-22 | 中国航空工业集团公司西安飞行自动控制研究所 | Flight control computer partition variable self-adaption monitoring and exciting method |
| CN106528445B (en) * | 2016-08-17 | 2019-10-18 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of flight control computer subregion variable adaptive monitoring and motivational techniques |
| CN107526587A (en) * | 2017-08-02 | 2017-12-29 | 中国航空无线电电子研究所 | A kind of construction method of comprehensively modularized avionics system |
| CN108008969A (en) * | 2017-12-28 | 2018-05-08 | 新华三技术有限公司 | A kind of method for upgrading software version, device and the network equipment |
| CN108008969B (en) * | 2017-12-28 | 2020-12-29 | 新华三技术有限公司 | Software version upgrading method and device and network equipment |
| CN108628643A (en) * | 2018-03-30 | 2018-10-09 | 深圳市伟文无线通讯技术有限公司 | SCM system method for loading software |
| CN110515593A (en) * | 2019-07-11 | 2019-11-29 | 北京机电工程研究所 | A kind of aircraft avionics system framework |
| CN112328331A (en) * | 2020-11-30 | 2021-02-05 | 中国航空工业集团公司西安航空计算技术研究所 | Method and device for replacing applications in partition mode |
| CN112328331B (en) * | 2020-11-30 | 2023-03-24 | 中国航空工业集团公司西安航空计算技术研究所 | Method and device for replacing applications in partition mode |
| CN113094119A (en) * | 2021-04-28 | 2021-07-09 | 杭州国芯科技股份有限公司 | Embedded equipment program dynamic loading method |
| CN113094119B (en) * | 2021-04-28 | 2022-07-12 | 杭州国芯科技股份有限公司 | Embedded equipment program dynamic loading method |
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