CN101783812A - FPGA configuration system and configuration method based on network - Google Patents
FPGA configuration system and configuration method based on network Download PDFInfo
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Abstract
The invention discloses an FPGA configuration system and a configuration method based on network. The configuration system comprises a remote server, a microprocessor, a network interface and a storage module, wherein the microprocessor is respectively connected with the network interface, the storage module and at least one field programmable gate array FPGA are connected; the remote server is connected with the network interface by the network; the remote server is used for storing the configuration data of the field programmable gate array FPGA and transmits the configuration data to the microprocessor by the network interface; and the microprocessor is used for writing the configuration data into the storage module or reads the configuration data from the storage module so as to configure the field programmable gate array FPGA.
Description
Technical field
The present invention relates to FPGA configuring technical field, be specifically related to a kind of based on network FPGA configuration-system and collocation method.
Background technology
In prior art ultrasonic diagnostic equipment design, with embedded microprocessor add field programmable gate array FPGA (Field Programmable Gate Array) be core architecture because of its powerful disposal ability and flexibly working method be widely adopted.The advantage of embedded microprocessor is micro-processor kernel and rich and varied peripheral interface equipment are combined closely, and when powerful computing, controlled function are provided, have reduced system cost and power consumption, thereby has been suitable as the control core of digital system; But the advantage of FPGA is ultrahigh speed, abundant logical resource and the logic function of user's flexible configuration, is applicable to that the logic interfacing function is varied, the occasion of flexibility and changeability.The two is had complementary advantages in conjunction with forming, if needed, be equipped with suitable special chip again.This architecture is applicable to the design of most of complex digital diagnostic instrumentation systems.And FPGA is a kind of field programmable logic device, when the FPGA operate as normal, configuration data is stored in SRAM (Static RAM) unit, sram cell is also referred to as configuration store (ConfigurationRAM), because the volatibility of memory SRAM, FPGA is after powering on, and external circuit need be loaded into configuration data among the configuration RAM in the sheet again, fpga chip ability operate as normal after inner each components and parts initialization is finished.
As shown in Figure 1, the layoutprocedure of FPGA is the transmission course of two secondary data: respectively by disposition data source to time schedule controller and time schedule controller to target FPGA.Existing FPGA configuration mode mainly contains two kinds: a kind ofly be to use traditional configuration mode, specific download cable that use producer provides and the personality PROM (programmableread-only memory programmable read only memory) of using FPGA producer to provide onboard provide the configuration sequential as FPGA, as long as the dedicated pin of PROM and FPGA is linked to each other, when powering on the target program in the server is burnt among the PROM by the download cable line, the configuration data among the PROM will be loaded among the SRAM of FPGA automatically; This configuration mode comprises specific download cable that is applied to the debug phase and the special-purpose nonvolatile memory that is applied in the product.In this mode, aforesaid two data transfer are finished by the software and hardware that FPGA manufacturer is provided fully.
As shown in Figure 2, another kind of scheme is to adopt other nonvolatile memory (as: E in the system of microprocessor (MCU)
2PROM, Flash) store configuration data, by special-purpose fever writes with the data programming in nonvolatile memory, the nonvolatile memory that programming is good is welded in the integrated circuit board again, the back microprocessor that powers on produces the configuration sequential of FPGA and the data in the nonvolatile memory is inserted among the SRAM of FPGA, or on the basic methods of this scheme, in microprocessor, add USB interface, transmit data by the USB interface host-host protocol, microprocessor is finished the control of data, go to upgrade the Flash data, thereby reach the purpose of configuration FPGA data.
Two kinds of FPGA configuration modes of prior art have following shortcoming:
First kind of FPGA configuration mode cost is higher, and ultrasonic diagnostic equipment generally uses FPGA, usually the FPGA of more than a slice also.But the FPGA that is based on SRAM technology needs to be configured after powering at every turn, and generally the configuration file of FPGA is loaded by the EPROM of a slice external dedicated.This is to adopt under the metastable situation of the function of FPGA, so will use the special-purpose nonvolatile memory of a lot of sheets in equipment, the cost of special-purpose nonvolatile memory is very high, and the cost of unit is just very high like this.The second, common specific download cable all is to use computer parallel port to produce the configuration signal of serial, and with the parallel port line as transmission medium, it is very limited to be doomed its effective propagation path; The 3rd, the configuration mode of special-purpose nonvolatile memory has determined target FPGA can only receive single configuration file, promptly in system's running, FPGA can not dynamically adjust logic function according to different situations, such configuration mode can't satisfy some use in for the requirement of system flexibility.Though second kind of FPGA configuration mode will be got well much at cost and flexibility than first kind of FPGA configuration mode, but the transmission of USB can only (usually in 1 meter) transmit in relatively shorter distance, otherwise just cause data to make mistakes easily, so also only be fit to in-plant Data Update.
Two kinds of FPGA configuration mode transmission ranges of prior art are all very limited, can only solve short-range renewal and download, can't satisfy long-range, trans-regional FPGA configuration, test, maintenance and the requirement of upgrading.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of based on network FPGA configuration-system and collocation method, overcomes the defective that prior art FPGA configuration mode transmission range is short, can't satisfy long-range, trans-regional FPGA configuration.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
A kind of based on network FPGA configuration-system, comprise remote server, microprocessor, network interface and memory module, described microprocessor respectively with described network interface, described memory module and at least a slice field programmable gate array FPGA link to each other, described remote server is connected by network with described network interface, described remote server is used to store the configuration data of described field programmable gate array FPGA and by described network interface described configuration data is sent to described microprocessor, described microprocessor is used for described configuration data is write described memory module, perhaps reads described configuration data and described field programmable gate array FPGA is configured from described memory module.
Described based on network FPGA configuration-system, wherein said network is made as Internet Internet.
Described based on network FPGA configuration-system, wherein said remote server is made as ftp server.
Described based on network FPGA configuration-system, wherein said network interface is made as the Ethernet interface chip.
Described based on network FPGA configuration-system, wherein said memory module is made as nonvolatile memory.
Described based on network FPGA configuration-system, wherein said nonvolatile memory is made as Flash.
A kind of based on network FPGA collocation method comprises step:
A1, the configuration data of field programmable gate array FPGA is stored in remote server;
A2, described remote server and microprocessor connect by network interface;
A3, described remote server are sent to described microprocessor with described configuration data;
A4, described microprocessor write memory module with described configuration data;
A5, described microprocessor read described configuration data and described field programmable gate array FPGA are configured from described memory module.
Described based on network FPGA collocation method, wherein said remote server is made as ftp server.
Described based on network FPGA collocation method, wherein said network interface is made as the Ethernet interface chip.
Described based on network FPGA collocation method, wherein said memory module is made as nonvolatile memory.
Beneficial effect of the present invention: the present invention is based on the FPGA configuration-system of network and collocation method with the medium of network as transmission field programmable gate array FPGA configuration data, thereby the distance of configuration data transmission no longer is restricted, as long as client is connected to Ethernet and just can long-rangely carries out trans-regional configuration, maintenance and renewal to field programmable gate array FPGA, improved allocative efficiency and the flexibility of field programmable gate array FPGA greatly.
Description of drawings
The present invention includes following accompanying drawing:
Fig. 1 is a prior art FPGA layoutprocedure schematic diagram;
Fig. 2 is a prior art FPGA inking device schematic diagram;
Fig. 3 is the FPGA configuration-system schematic diagram that the present invention is based on network;
Fig. 4 is the FPGA configuration-system embodiment schematic diagram that the present invention is based on network;
Fig. 5 is the FPGA configuration-system FPGA configuration main flow chart that the present invention is based on network;
Fig. 6 is an embodiment of the invention translation profile protocol architecture stack schematic diagram;
Fig. 7 is embodiment of the invention ftp server and client communication process schematic diagram;
Fig. 8 is an embodiment of the invention Flash storage format schematic diagram;
Fig. 9 is embodiment of the invention FPGA configuration flow figure;
Figure 10 is an embodiment of the invention FPGA configuration upgrade procedure flow chart;
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
As shown in Figure 3, the FPGA configuration-system that the present invention is based on network comprises remote server, microprocessor, network interface and memory module, microprocessor respectively with network interface, memory module and at least a slice field programmable gate array FPGA link to each other, remote server is connected by network with network interface, the configuration data of remote server storage field programmable gate array FPGA also is sent to microprocessor with configuration data by network interface, microprocessor writes memory module with configuration data, perhaps reads configuration data and field programmable gate array FPGA is configured from memory module.
As shown in Figure 4 and Figure 5, the present invention is based on the FPGA configuration-system of network, with the medium of Internet as the transmission configuration data, and store these data with the nonvolatile memory Flash of microprocessor, in the last realization of the general purpose I/O of microprocessor field programmable gate array FPGA configuration sequential, the configuration flow of field programmable gate array FPGA as shown in Figure 4, microprocessor downloads to nonvolatile memory Flash configuration data stored among the SRAM of a slice or several field programmable gate array FPGA according to certain order and order; Secondly, microprocessor is realized the communication of configuration data, configuration information, order, state etc. by Internet network interface and remote server; After realizing the mutual biography of network data, the content of nonvolatile memory Flash is read and write and upgraded; Nonvolatile memory Flash stores corresponding relation of configuration sequence, configuration data and field programmable gate array FPGA that all configuration datas about field programmable gate array FPGA have comprised field programmable gate array FPGA etc.
As shown in Figure 6, the network transmission protocol that the present invention uses is made as FTP (FileTransfer Protocol) agreement based on TCP, transplanted ICP/IP protocol in the microprocessor software, File Transfer Protocol both can have been guaranteed security of File Transfer and reliability in the network environment of complexity, can guarantee simultaneously the requirement of the each side such as quality, speed of transfer of data again.
As shown in Figure 7, File Transfer Protocol is a kind of based on file transfer protocol (FTP) TCP, safety, reliable, and complete ftp file transmission need be set up two types connection, a kind ofly issue orders for file transfer, be called control connection, another kind of then realize real file transfer, be called data and connect.Need carry out the necessary installation and operation FTP CLIENT PROGRAM of client computer of remote transmission, consider the ftp server fail safe, ftp server can distribute the Guest account of appointment at each client, and needing the client of file transfer can be the assigned catalogue of its setting by account remote access ftp server.Client need be uploaded the data downloaded transmission with ftp server foundation, it at first sends the request that connects to the tcp port of ftp server, ftp server is accepted the request from client, finishes the establishment of connection process, and beginning transfer files afterwards is the data connection of FTP.The transmission means of ftp server has two kinds: ASCII mode and binary mode, default conditions are ASCII modes, and client can use the TYPE order that the transport-type of file is set, but must be re-set as default conditions after the transformation task end.Ftp server is put into the appointment spanned file of information that needs according to the FPGA configuration and data the destination folder of appointment.After the network successful connection and receiving the connection request of client, ftp server accepts request and designated directory is open to client, client sends request to ftp server once more after finding file destination in the catalogue, ftp server accepts request, and return address and ephemeral port carry out the transmission of file to be used to connect.After transfer of data is finished, client finishes to connect to the packet notice ftp server that ftp server sends a TCP FIN, the packet that the while ftp server also sends a TCP FIN is to client, and both sides successfully confirm to close the FTP control connection behind the packet.
As shown in Figure 8, Flash is a kind of long-life non-volatile (still can keep institute's data information stored under powering-off state) memory, data deletions is not to be unit with single byte but to be unit with fixing block, selects the size of capacity to decide with the system of reality.Flash in the practical application mainly is divided into two kinds of NOR and NAND.The present invention uses NORFlash zone (program storage area) to deposit the configuration information of different FPGA and adds that different identification codes is distinguished, the configuration sequential of number to be configured and FPGA, data length etc. in the beginning position.The configuration data of NAND Flash zone (data storage area) storage FPGA.
That the Ethernet interface chip is selected for use is the RTL8019AS that Taiwan Realtek company produces, and mainly finishes ICP/IP protocol, and inside is divided into long-range DMA interface, local DMA interface, MAC (medium access control) logic, digital coding decode logic and other ports.Long-range DMA interface is meant the bus that microprocessor is read and write the RTL8019AS internal RAM, i.e. the interface section of isa bus.The microprocessor transceive data only needs long-range dma operation.Local DMA interface is the interface channel of RTL8019AS and netting twine, finishes the exchanges data of microprocessor and netting twine.MAC (medium access control) logic is finished following function: when microprocessor during to online transmission data, earlier frame data are delivered to transmission buffer area among the RTL8019AS by long-range DMA passage, send then and transmit order; Finished the transmission of last frame as RTL8019AS after, begin the transmission of this frame again.The data that RTL8019AS receives by MAC comparison, CRC check after, deposit by FIFO and to receive buffering area; After receiving a full frame, interrupting or the mode of register flag is notified microprocessor, fifo logic is made the buffering of 16 bytes to transceive data, to reduce the frequency to local DMA request.
The present invention is based on the FPGA collocation method of network, comprise step:
A1, the configuration data of field programmable gate array FPGA is stored in remote server;
A2, remote server and microprocessor connect by network interface;
A3, remote server are sent to microprocessor with configuration data;
A4, microprocessor write memory module with configuration data;
A5, microprocessor read configuration data and field programmable gate array FPGA are configured from memory module.
As shown in Figure 9, the general purpose I of microprocessor/O realizes accurately grasp of FPGA configuration: the form of (1) configuration file; (2) sequential of configuration signal.In general, FPGA develops software and can generate the configuration file of number of different types, and the user can select these configuration files for use according to different applied environments.The present invention adopts the .bin file.It should be noted that for a certain specific chip, no matter simplicity of design or complexity, the length of the data of its configuration is fixed, but the configuration file size is because of the difference of type difference to some extent.Common FPGA configuration mode comprises initiatively serial mode, passive serial pattern, passive parallel schema and boundary scan pattern etc., and for compatible with download cable and save the I/O mouth line of microprocessor, the present invention adopts the passive serial pattern.Allocation plan based on microprocessor and the Internet all has a clear superiority on transmission rate, transmission range.
As shown in figure 10, must carry out according to the form of the configuration file of FPGA and the sequential of signal in the configuration upgrade procedure of FPGA.The upgrading data packet that at first data to be upgraded (may be the identical configuration information of one or more pieces FPGA or the different configuration informations of different FPGA) is made into the .bin file format is stored on the remote server.After the microprocessor in the equipment and remote server are obtained information interaction, upgrading data packet is transferred in this equipment by Internet, microprocessor detects after the upgrading data packet automatically the operation ROMPaq and finishes escalation process.The content of upgrading data packet has mainly comprised the concrete data of FPGA upgrading, the configuration identification code of FPGA, the code of FPGA, the configuration order of FPGA, initial address, FPGA configuration data length and the check value etc. of FPGA configuration data.In making the process of upgrading data packet, use specific software, behind the given content of the ID of input FPGA to be upgraded sign and upgrading data packet, then according to the automatic generation upgrade data APMB package of FPGA requirement.
Those skilled in the art do not break away from essence of the present invention and spirit, can there be the various deformation scheme to realize the present invention, the above only is the preferable feasible embodiment of the present invention, be not so limit to interest field of the present invention, the equivalent structure that all utilizations specification of the present invention and accompanying drawing content are done changes, and all is contained within the interest field of the present invention.
Claims (10)
1. based on network FPGA configuration-system, it is characterized in that: comprise remote server, microprocessor, network interface and memory module, described microprocessor respectively with described network interface, described memory module and at least a slice field programmable gate array FPGA link to each other, described remote server is connected by network with described network interface, described remote server is used to store the configuration data of described field programmable gate array FPGA and by described network interface described configuration data is sent to described microprocessor, described microprocessor is used for described configuration data is write described memory module, perhaps reads described configuration data and described field programmable gate array FPGA is configured from described memory module.
2. based on network FPGA configuration-system according to claim 1, it is characterized in that: described network is made as Internet Internet.
3. based on network FPGA configuration-system according to claim 2, it is characterized in that: described remote server is made as ftp server.
4. based on network FPGA configuration-system according to claim 3, it is characterized in that: described network interface is made as the Ethernet interface chip.
5. based on network FPGA configuration-system according to claim 4, it is characterized in that: described memory module is made as nonvolatile memory.
6. based on network FPGA configuration-system according to claim 5, it is characterized in that: described nonvolatile memory is made as Flash.
7. a based on network FPGA collocation method is characterized in that, comprises step:
A1, the configuration data of field programmable gate array FPGA is stored in remote server;
A2, described remote server and microprocessor connect by network interface;
A3, described remote server are sent to described microprocessor with described configuration data;
A4, described microprocessor write memory module with described configuration data;
A5, described microprocessor read described configuration data and described field programmable gate array FPGA are configured from described memory module.
8. based on network FPGA collocation method according to claim 7, it is characterized in that: described remote server is made as ftp server.
9. based on network FPGA collocation method according to claim 8, it is characterized in that: described network interface is made as the Ethernet interface chip.
10. based on network FPGA collocation method according to claim 9, it is characterized in that: described memory module is made as nonvolatile memory.
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