1、This material exempt per Department of Commerce license exception TSU,EDK Introduction,EDK Intro 2,Objectives,After completing this module, you will be able to: Describe the embedded systems development flow Understand the components in the hardware design Specify ways to create a hardware design Id
2、entify the tools included in EDK Locate the EDK documentation,EDK Intro 3,Outline,Introduction EDK Overview of EDK Embedded Development Design Flow XPS Platform Management Supported Platforms Appendix: Project Files and Structures,EDK Intro 4,Embedded Systems,An embedded system is nearly any computi
3、ng system (other than a general-purpose computer) with the following characteristics Single-functioned Typically, is designed to perform predefined function Tightly constrained Tuned for low cost Single-to-fewer components based Performs functions fast enough Consumes minimum power Reactive and real
4、-time Must continually monitor the desired environment and react to changes Hardware and software co-existence,EDK Intro 5,Embedded Systems,Examples: Mobile phone systems Customer handsets and base stations Communication devices Wired and wireless routers and switches Automotive applications Braking
5、 systems, traction control, airbag release systems, and cruise-control applications Aerospace applications Flight-control systems, engine controllers, auto-pilots and passenger in-flight entertainment systems Defense systems Radar systems, fighter aircraft flight-control systems, radio systems, and
6、missile guidance systems,EDK Intro 6,Current Technologies,Microcontroller-based systems DSP processor-based systems ASIC technology FPGA technology,EDK Intro 7,Integration of Functions,Time,Integration in System Design,Embedded Design in an FPGA,Embedded design in an FPGA consists of the following:
7、FPGA hardware design C drivers for hardware Software design Software routines Interrupt service routines (optional) Real Time Operating System (RTOS) (optional),EDK Intro 9,PowerPC-based Embedded Design,Full system customization to meet performance, functionality, and cost goals,EDK Intro 10,MicroBl
8、aze Processor-Based Embedded Design,Flexible Soft IP,Off-Chip Memory,FLASH/SRAM,Fast Simplex Link,0,1.7,BRAM,Local Memory Bus,D-Cache BRAM,I-Cache BRAM,Configurable Sizes,CacheLink,SRAM,EDK Intro 11,Outline,Introduction EDK Overview of EDK Embedded Development Design Flow XPS Platform Management Har
9、dware Design Supported Platforms Appendix: Project Files and Structures,EDK Intro 12,Embedded Development Kit,What is Embedded Development Kit (EDK)?The Embedded Development Kit is the Xilinx software suite for designing complete embedded programmable systemsThe kit includes all the tools, documenta
10、tion, and IP that you require for designing systems with embedded IBM PowerPC hard processor cores, and/or Xilinx MicroBlaze soft processor coresIt enables the integration of both hardware and software components of an embedded system,EDK Intro 13,Embedded Development Tool Flow Overview,RTOS, Board
11、Support Package,Instantiate the System Netlist and Implement the FPGA,Include the BSP and Compile the Software Image,1,2,3,EDK Intro 14,Embedded System Tools,GNU software development tools C/C+ compiler for the MicroBlaze and PowerPC processors (gcc) Debugger for the MicroBlaze and PowerPC processor
12、s (gdb) Hardware and software development tools Base System Builder Wizard Hardware netlist generation tool: PlatGen Software Library generation tool: LibGen Simulation model generation tool: SimGen Create/Import Peripherals Wizard Xilinx Microprocessor Debug (XMD) Hardware debugging using ChipScope
13、 Pro Analyzer cores Eclipse IDE-based Software Development Kit (SDK) Application code profiling tools Virtual Platform generator: VPGen Flash Writer utility,EDK Intro 15,Embedded System Tools,Board Support Packages (BSPs) Standalone BSP Wind River VxWorks MontaVista Linux Xilinx MicroKernel (XMK)Xil
14、inx Platform Studio Xilinx Platform Studio (XPS) is a graphical Integrated Design Environment (IDE) that incorporates all the Embedded System Tools for seamless creation of hardware and software components and, optionally, a verification component,EDK Intro 16,Xilinx Platform Studio (XPS),See notes
15、section for detailed explanation,XPS Functions,XPS,HW/SW Simulation,HW/SW Debug,Hardware Design,Software Design,Project management MHS or MSS file XMP file Software application management,Platform management Tool flow settings Software platform settings Tool invocation Debug and simulation,EDK Intro
16、 18,Outline,Introduction EDK Overview of EDK Embedded Development Design Flow XPS Platform Management Supported Platforms Appendix: Project Files and Structures,Project Management,Create a new project Using File New Project or toolbar button Select Base System Builder option The Base System Builder
17、(BSB) wizard is a software tool that helps you quickly build a working system targeted at a specific development board Select Blank XPS Project option Open an existing project Using File Open Project or toolbar button Browse to a pre-created project directory and selecting an xmp file Using File New
18、 Project or toolbar button Select Open a Recent Project option and selecting a project Project information is saved in the Xilinx Microprocessor Project (XMP) file,EDK Intro 20,Project Creation Using Base System Builder (BSB) Option,Select a target board Select a processor Configure the processor Se
19、lect and configure I/O interfaces Add internal peripherals Generate the system software and the linker script,Generate the design Generated files: system.mhs system.mss System.xmp data/system.ucf etc/fast_runtime.opt etc/download.cmd pcore directory (empty) system.bsb (optional, if selected) TestApp
20、_Memory/src directory containing (optional, if selected) TestApp_Memory.c TestApp_Memory_LinkScr.ld TestApp_Peripheral/src directory containing (optional, if selected) TestApp_Peripheral TestApp_Peripheral/src/TestApp_Periperal_LinkScr.ld,EDK Intro 21,Simulation Generator,Hardware Platform Generatio
21、n,Library Generation,Embedded Software Development,ISE Tools,IP Library or User Repository,MSS,LibGen,.a,Compiler (GCC),.o,Linker (GCC),ELF,MHS,PlatGen,Drivers, MDD,MPD, PAO,PCore HDL,System and Wrapper VHD,system.BMM,Synthesis (XST),NGC,NGDBuild,UCF,NGD,MAP,NCD, PCF,PAR,NCD,BitGen,system.BIT,BitIni
22、t,download.BIT,iMPACT,system_BD.BMM,SimGen,Behavioral VHD Model,SimGen,Structural VHD Model,SimGen,Timing VHD Model,Simulation,IP Models,ISE Models,Testbench Stimulus,CompEDKLib,CompXLib,Application Source .c, .h, .s,EDK Tool Flow,download.CMD,EDK SW Libraries,EDK Intro 22,Hardware Implementation XP
23、S/Xflow,Xflow Implement hardware and generate the bitstream Input files .ngc netlists, .bmm file, system.vhd, .ucf Output Files system.bit, system_bd.bmm Xflow calls the ISE Implementation tools using fast_runtime.opt file NGDBuild, MAP, PAR, and TRACE are executed Xflow then calls the BitGen progra
24、m using bitgen.ut file BitGen generates the bit file system.bit BitGen also generates the back-annotated system_bd.bmm BMM file, which contains the physical location of the block RAMs,EDK Intro 23,Hardware Implementation ISE/XPS Flow,The ISE/XPS flow provides integration of a processor system at two
25、 levels as a component in a FPGA design : The processor system is the top-level design The processor system is a submodule Once the processor system is added in the ISE project, XPS can be invoked from ISE by selecting xmp file in Sources window and double-clicking Manage Processor System in the Pro
26、cesses window Add user constraint file in ISE Implement design in ISE by selecting top-level module in Sources window and double-clicking Implement Design in Processes window Executable software can be merged by selecting top-level module in Sources window and double-clicking Update Bitstream with P
27、rocessor Data in Processes window This will call XPS in background to update the bitstream and generate system.bit and download.bit files in implementation directory as well as copy the file as system_stub.bit and system_stub_download.bit files in the ISE project directory,EDK Intro 24,Software Flow
28、 Library Generation,Library Generator LibGen Input files MSS Output files libc.a, libXil.a, libm.a LibGen is generally the first tool run to configure libraries and device drivers The MSS file defines the drivers associated with peripherals, standard input/output devices, interrupt handler routines,
29、 and other related software features LibGen configures libraries and drivers with this information and produces an archive of object files: libc.a - Standard C library libXil.a - Xilinx library libm.a - Math functions library,EDK Intro 25,Software Flow Compilation,Compile program sources Input files
30、 *.c, *.c+, *.h, libc.a, libXil.a, libm.a Output files executable.elf This invokes the compiler for each software application and builds the executable files for each processor Four stages: Pre-processor: Replaces all macros with definitions as defined in the .c or .h files Machine-specific and lang
31、uage-specific compiler: Compiles C/C+ code Assembler: Converts code to machine language and generates the object file Linker: Links all the object files using user-defined or default linker script,EDK Intro 26,Merging Hardware and Software Flows,data2MEM,download.bit,Hardware Flow,Software Flow,EDK
32、Intro 27,Merging Hardware and Software Flows,Data2MEM Update the bitstream Input files system_bd.bmm, system.bit, executable.elf Output file download.bit This invokes the BitInit tool, which initializes the instruction memory of the processor The instruction memory may be initialized with a bootloop
33、, bootloader, or an actual application This is the stage where the hardware and the software flows come together. This stage also calls the hardware and software flow tools if required,EDK Intro 28,Configuring the FPGA,Download the bitstream Input file download.bit This downloads the download.bit fi
34、le onto the target board using the Xilinx iMPACT tool in batch mode XPS uses the etc/download.cmd file for downloading the bitstream The download.cmd file contains information such as the type of cable is used and the position of the FPGA in a JTAG chain,EDK Intro 29,Outline,Introduction EDK Overvie
35、w of EDK Embedded Development Design Flow XPS Platform Management Supported Platforms Appendix: Project Files and Structures,Add/Edit Cores,Add cores, edit core parameters, and make bus and port connections through System Assembly view Select IP Catalog tab to add peripherals Select a core and drop
36、it in the system view or double- click on it to add In the System View select an instance, right click, and then select Delete Instance Change settings using appropriate filters and select an instance Base and end addresses Parameters Ports,1,1,2,2,3,3,Project Options Device and Repository Tab,Set/C
37、hange Target Device Architecture Device Size Package Grade Peripheral Repository Directory Provide path to custom IP not present in the current project directory structure Custom Makefile Directory,Note: Detailed information on the other two tabs is provided in the “Adding Your Own IP to the OPB Bus
38、” and the “System Simulation” modules in this course.,EDK Intro 32,Outline,Introduction EDK Project Management Software Application Management Platform Management Supported Platforms Appendix: Project Files and Structures,EDK Intro 33,Supported Platforms,Operating systems Windows 2000 (Service Pack
39、2) Windows XP Solaris Operating System 2.8/2.9 Linux Red Hat Enterprise 3.0 FPGA families Spartan-II/IIE (MicroBlaze processor) Spartan-3/3E (MicroBlaze processor) Virtex and Virtex-E (MicroBlaze processor) Virtex-II (MicroBlaze processor) Virtex-II Pro (MicroBlaze and PowerPC processors) Virtex-4 F
40、X (MicroBlaze and PowerPC processors) and LX/SX (MicroBlaze processor),EDK Intro 34,BSB-Supported Platforms,A list of supported Xilinx hardware boards: AFX board Spartan-3 Starter Board Virtex-4 ML401 Evaluation Platform Virtex-4 ML402 Evaluation Platform Virtex-4 ML403 Evaluation Platform Virtex-II
41、 Multimedia FF896 Development Board Virtex-II Pro ML300 Evaluation Platform Virtex-II Pro ML310 Evaluation Platform XUP Virtex-2 Pro Educational Platform (.xbd files downloadable from XUP web) Custom board Board definition (.xbd) files for third party boards can be downloaded from the board vendor w
42、eb site Links from the BSB wizard and Xilinx embedded Web page,EDK Intro 35,Knowledge Check,What is the MHS file? What does the PlatGen tool do?What tool is used to place executable code in an FPGA block RAM?,EDK Intro 36,Answers,What is the MHS file? The MHS file is the Microprocessor Hardware Spec
43、ification; it specifies processors, hardware peripherals, bus connections, and address spaces for the hardware What does the PlatGen tool do? PlatGen takes the MHS file and creates the system and peripheral netlists, HDL wrapper files, BMM file, etc. What tool is used to place executable code in an
44、FPGA block RAM? The Data2Mem tool will take the BMM file and create the proper initialization for the block RAM that is assigned to the executable memory space,EDK Intro 37,Knowledge Check,How can you add or change configuration settings once the hardware system is build? What does the LibGen tool d
45、o?What is the difference between system.bit and download.bit files?,EDK Intro 38,Answers,How can you add or change configuration settings once the hardware system is build? Select IP Catalog tab, expand related IP peripheral folder, select a desired IP, and double-click on it to add it to the design
46、 Select an IP instance in the System Assembly View panel, right click on it, and select desired configuration What does the LibGen tool do? Read MSS file and generate libraries What is the difference between system.bit and download.bit files? The system.bit file contains only hardware description whereas download.bit file contains both hardware description as well as executable software,
