CN102033849A

CN102033849A - Computer construction method based on embedded multi-CPUs

Info

Publication number: CN102033849A
Application number: CN201010618949XA
Authority: CN
Inventors: 黄忠林
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-31
Filing date: 2010-12-31
Publication date: 2011-04-27

Abstract

The invention relates to a computer construction method based on embedded multi-CPUs, which is characterized in that a D-Linux operating system is constructed first, embedded CPUs of the same quantity are arranged as core processor modules to construct a hardware platform according to the total quantity of processing systems in the operating system, the bus of each embedded CPU is provided with a Flash, a memory and a hardware drive interface circuit, each embedded CPU only runs the function of the corresponding processing system, and function service requests and data exchange are accomplished via communication protocols among the processing systems. By using the invention, a computer system with a new structure can be constructed, and the system has the advantages of high efficiency, low energy consumption, and friendly software running and developing environment, which has the same feeling with a single CPU.

Description

A kind of construction method of the computing machine based on embedded many CPU

Technical field

The present invention relates to a kind of computer system.

Background technology

The embedded type CPU technology is the fast development of ARM particularly, and original industrial use computer IPC machine is progressively withdrawn from the market, and corresponding then is to be the embedded PC (being called EPC among the application) of main flow CPU with ARM.

The structure and the characteristics of existing EPC machine are :

Bus structure are simple: be system bus with the cpu bus; Operation embedded OS (winCE, embedded X P etc.) or linux operating system; Low in energy consumption---do not need heat abstractor; Application software and system software binding are solidificated in the FLASH.

Existing EPC machine major defect is:

System capability a little less than, be difficult to move fairly large application program (as the real-time on-site data gathering of high capacity system).

And existing general household PC then needs to move huge operating system software, bears very heavyly, and operational efficiency is not high.

Summary of the invention

The objective of the invention is to invent a kind of computer method that makes up novel embedded many CPU, can keep low-power consumption characteristics, can improve its performance again, strengthen expanding ability as existing EPC machine.

Method of the present invention is: at first make up a kind of D-Linux operating system, described D-Linux system is divided into main application service disposal system (AFS) and one group of standard feature association disposal system (SFS) by function, and standard feature association's disposal system (SFS) is helped the former as association's processing element of main application service disposal system (AFS) and finished using the support function of software.

Then, total quantity according to main application service disposal system and standard feature association disposal system, the embedded type CPU of arranging equivalent amount is that the processor module of core makes up hardware platform, described embedded type CPU, its bus carries Flash, internal memory and hardware driving interface circuit, and each embedded type CPU only moves the function of that disposal system of its correspondence.

Finish function services request and exchanges data by communication protocol between main application service disposal system (AFS) and the standard feature association's disposal system (SFS), come co-ordination owing to adopt communication protocol, AFS just can operate in respectively on the different embedded type CPUs with SFS, and each subsystem can have privately owned hardware resource.

Preferably: hardware platform system is made of an application service function processor assembly (H-AFS) and one group of standard feature coprocessor assembly (H-SFS); Application service function processor assembly is used to move AFS subsystem and the user application of D-Linux; Standard feature coprocessor assembly then is used to move the SFS subsystem of D-Linux; Arrange the internal communication hardware interface between the processor module.

Preferred embedded type CPU: with the processor of ARM7 as function service function processor module (H-SFS), ARM9 is as the processor of application service function processor assembly (H-AFS), and each cpu bus carries Flash, internal memory, Ethernet chip and USB interface.

Further preferred: whole computing machine of the present invention is divided into and uses main service processing part, network communication services assists processing section, file system stores service association processing section and graph window man-machine conversation to show service association processing section four major parts, and D-Linux operating system and this four part of embedded type CPU processor module correspondence are provided with four groups.

The invention has the beneficial effects as follows: adopt embedded many cpu packages, each CPU only does a job, can increase substantially system performance, keep embedded single CPU advantage of low power consumption again, the D-Linux that on the Linux basis, rebuilds particularly, can allow the user feel is exploitation and operation Linux application software on single CPU, the following mode, and the EPC of low-grade function can promote and be the powerful embedded computer of performance.

Embodiment

One, operating system D-Linux construction method of the present invention is as follows:

1, subsystem is divided:

D-Linux is made up of a main application service processing subsystem AFS and three disposal system SFS of standard feature association, three SFS systems are respectively: network communication services Net_SFS, file system stores service (comprising disk, USB flash disk) File_SFS, the graph window man-machine conversation shows service X_SFS.

2, main application service processing subsystem AFS:

The map of services function, the map of services function be with Linux in the power function code have the function of same code interface form (same title, method of calling and parameter, return results etc.), turn to mapping to guard module but difference is that the map of services function will call.

Module is guarded in mapping, and each SFS subsystem is guarded module to a mapping should be arranged, and division has three mappings and guards module according to subsystem, and the driver module that module is corresponding SFS is guarded in each mapping.

Service request response, mapping is guarded module and is obtained services request and parameter from the top service mapping function, and communication interface is transmitted to corresponding SFS internally, and the SFS result foldback that receives of communication interface is given the top service mapping function internally again.

Module event message among the SFS that receives of communication interface is internally guarded in event handling response, mapping, then to the upper strata map of services function notice that initiates a message, and gives corresponding system module by the upper strata mapping function again or the application software process is gone processing.

3, the AFS method for designing is:

The first step: design is write mapping and is guarded module and map of services function code according to the communication protocol between AFS and the SFS;

Second step: partly crop belonging to the pairing kernel module of the defined function of SFS subsystem, system call api function and correlative code among the Linux, replace the map of services function;

The 3rd step: will shine upon accordingly and guard module and incorporate linux kernel and driving together into, and so just form the AFS subsystem.

4, the processing subsystem SFS of standard feature association

SFS is made up of its monitoring demons and function service processing two parts, and this two parts merging is encapsulated in the FLASH of relevant hardware assembly H_SFS together.

The monitoring demons, the monitoring demons are master routines of SFS, be be used for receiving from the intercommunication interface corresponding to the service request response of AFS, and call inner respective service functional software module and handle, then the result is issued AFS by the intercommunication interface; Monitor demons simultaneously and will detect software and hardware incident from self inside, and event message is issued AFS by the intercommunication interface, each SFS all has the monitoring demons of oneself;

The monitoring demons are divided into two layers: the intercommunication interface drives with monitoring and handles.

Network communication services Net_SFS, the Net_SFS major function provides services such as processing of network socket and the processing of ICP/IP protocol stack, is made up of the linux kernel after network service monitoring demons and the cutting.

The first step: the network monitoring demons are write in design according to the communication protocol between AFS and the network service SFS (freely defining design);

Second step: keep the hardware device drivers function of related network among the Linux, the part cutting that has nothing to do with the operation of ICP/IP protocol stack in the linux kernel code is simplified;

The 3rd step: demons are monitored in network service be incorporated into the kernel master routine and get final product.

5, file system stores service File_SFS

The File_SFS major function provides the file system management service function, comprises services such as document creation, read-write, is made up of the linux kernel after file storage service monitoring demons and the cutting.

The first step: file storage service monitoring demons are write in design according to the communication protocol between AFS and the file storage service File_SFS (freely defining design);

Second step: keep the hardware device drivers function of relevant document system among the Linux, the irrelevant part cutting of file system operation in the linux kernel code is simplified;

The 3rd step: file storage service is monitored demons be incorporated into the kernel master routine and get final product.

6, the graph window man-machine conversation shows service X_SFS

The X_SFS major function provides window, graphic presentation service and keyboard, mouse action scanning respond services, shows that by graph window the linux after service monitoring demons and the cutting forms.

The first step: show that according to AFS and graph window the communication protocol (freely defining design) between the service X_SFS designs composer window graphic presentation service monitoring demons;

Second step: keep linux OPEN_GL, relevant other GUI built-in functions, X window system, display interface driving, keep USB keyboard and USB mouse-driven, the part cutting that the linux kernel is irrelevant is simplified;

The 3rd step: graph window is shown that the service monitoring demons are incorporated into the kernel master routine and get final product.

Two, hardware arrangement method

System architecture

SPC is made up of a H_AFS and three H_SFS nextport hardware component NextPorts and component interconnect communication hardware, and the interconnected communication interface hardware can be selected for use and be one of following manner between each assembly:

A, Ethernet exchange: each cpu package all is with a slice Ethernet chip, puts an Ethernet switching chip on the system board, and assembly is interconnected by Ethernet;

B, two or two butt joints of mixed serial bus: according to each cpu package data speed transmission requirement, respectively with PCI-ex, USB, two or two butt joints of Ethernet mode;

C, parallel data read-write butt joint: adopt FIFO, twoport internal memory or latch to finish exchanges data between each CPU, can select suitable fpga chip for use;

Preferred option is the Ethernet exchanged form.

The processor module basic configuration:

The CPU type selecting:

Can adopt various embedded type CPUs, preferred option is: ARM7 is as the processor of H_SFS, and ARM9 is as the processor of H_AFS;

Basic function hardware:

Each cpu bus carries FLASH, MEMORY, ETHNET network chip, USB interface (being used for can programming FLASH)

Preferred four functions of present embodiment:

1, application service primary processor assembly H_AFS is used for run user application software and AFS, except that basic configuration, need not add hardware in addition.

2, network communication services coprocessor assembly:

Be used for operational network service Net_SFS subsystem, except that basic configuration, need to expand one or several (Multi-netmouth communication) network chips and RJ45 interface external network interface as total system.

3, file system stores service coprocessor assembly:

Be used for moving disk (comprising USB flash disk) file storage service File_SFS subsystem, except that basic configuration, need to expand hard disk drive interface and USB flash disk driving interface circuit.

4, the graph window man-machine conversation shows service coprocessor assembly:

Being used for the man-machine conversation of human window figure shows service X_SFS, except that basic configuration, needs to expand circuit such as USB keyboard interface, USB mouse interface, display driver interface.

Certainly,, can also divide more other functions, cooperate corresponding D-Linux operating system and embedded type CPU processor module to finish according to concrete need of work.

Claims

1. construction method based on the computing machine of embedded many CPU, it is characterized in that: at first make up a kind of D-Linux operating system, described D-Linux system is divided into main application service disposal system (AFS) and one group of standard feature association disposal system (SFS) by function, and standard feature association's disposal system (SFS) is helped the former as association's processing element of main application service disposal system (AFS) and finished using the support function of software;

Then, total quantity according to main application service disposal system and standard feature association disposal system, the embedded type CPU of arranging equivalent amount is that the processor module of core makes up hardware platform, described embedded type CPU, its bus carries Flash, internal memory and hardware driving interface circuit, and each embedded type CPU only moves the function of that disposal system of its correspondence;

Finish function services request and exchanges data by communication protocol between main application service disposal system (AFS) and the standard feature association's disposal system (SFS).

2. hardware platform system is made of an application service function processor assembly (H-AFS) and one group of standard feature coprocessor assembly (H-SFS); Application service function processor assembly is used to move AFS subsystem and the user application of D-linux; Standard feature coprocessor assembly then is used to move the SFS subsystem of D-linux; Arrange the internal communication hardware interface between the processor module.

3. the construction method of the computing machine based on embedded many CPU according to claim 1, it is characterized in that: with the processor of ARM7 as function service function processor module (H-SFS), ARM9 is as the processor of application service function processor assembly (H-AFS).

4. the construction method of the computing machine based on embedded many CPU according to claim 1, it is characterized in that: whole computing machine of the present invention is divided into uses main service processing part, network communication services association processing section, file system stores service association processing section and graph window man-machine conversation demonstration service association processing section four major parts, arrange corresponding this four part of D-Linux operating system and embedded type CPU processor module to be provided with four groups.