Part A Presentation Implementation of DSP Algorithm on SoC Student : Einat Tevel Supervisor : Isaschar Walter Accompanying engineer : Emilia Burlak The project is conducted with cooperation of Rafael. winter 2003/2004

Project Goals - Review Studying and investigating the architecture of System on Programmable Chip (SoC). Studying and investigating the architecture of System on Programmable Chip (SoC). Deciding on the Software/Hardware partition to be implemented. Deciding on the Software/Hardware partition to be implemented. Implementing a signal processing algorithm on the chosen platform. Implementing a signal processing algorithm on the chosen platform. First Semester: Full understanding of the elements and studied environments. Full understanding of the elements and studied environments. Writing and Running examples on the evaluation board. Writing and Running examples on the evaluation board.

Project Schedule Second Part of First Semester Project Schedule Second Part of First Semester Studying the PowerPC processor. Studying the PowerPC processor. Studying the EDK software for developing SoC. Studying the EDK software for developing SoC. Studying the SoC design process. Studying the SoC design process. Get familiar with the Xilinx ’ s evaluation board. Get familiar with the Xilinx ’ s evaluation board. Writing and Running examples on the evaluation Writing and Running examples on the evaluation board. board.

System View PowerPC 405 Core I-Cache D-Cache CoreConnect Processor Local Bus (PLB) User Logic External Memory High Speed Peripherals CoreConnect On-Chip Peripheral Bus (OPB) Low Speed Peripherals PLB-OPB Bridge FPGA Block RAM

Implementation Tools EDK - Embedded Development Kit EDK - Embedded Development Kit Provides a set of design tools and a wide selection of standard peripherals required to build embedded processor systems. Provides a set of design tools and a wide selection of standard peripherals required to build embedded processor systems. XPS (Xilinx Platform Studio) – Provides an integrated environment for creating the software and hardware specification flows. XPS (Xilinx Platform Studio) – Provides an integrated environment for creating the software and hardware specification flows. Standard peripherals (GPIO, SDRAM, Clock Modules, Ethernet). Standard peripherals (GPIO, SDRAM, Clock Modules, Ethernet). GNU based software tools (C compiler, assembler, linker and debugger). GNU based software tools (C compiler, assembler, linker and debugger). Virtex-II Pro FF1152 Development Board Virtex-II Pro FF1152 Development Board Enables implementation of embedded processor based applications using IP cores and customized modules. Enables implementation of embedded processor based applications using IP cores and customized modules. Virtex II Pro FPGA (XC2VP30). Virtex II Pro FPGA (XC2VP30). Two Integrated PowerPC Processors. Two Integrated PowerPC Processors. Two memory blocks of 8Mx32 SDRAM memory each. Two memory blocks of 8Mx32 SDRAM memory each.

Virtex-II Pro FF1152 Development Board

CoreConnect Architecture Elements of the CoreConnect architecture: PLB (Processor Local Bus): high performance synchronous bus designed for connection of processors to high-performance peripherals devices. OPB (On-chip Peripheral Bus): general-purpose synchronous bus designed for connection of on-chip peripheral devices.

User Cores Objective: Add a User Core to an embedded system, which implements a user-logic written in vhdl. Objective: Add a User Core to an embedded system, which implements a user-logic written in vhdl. The User core is to be attached to an embedded processor bus, such as OPB or PLB. The User core is to be attached to an embedded processor bus, such as OPB or PLB. There are several configurations that can be used to connect user cores and user logic to an embedded subsystem. There are several configurations that can be used to connect user cores and user logic to an embedded subsystem.

Connecting User Cores IPIF (IP Interface) – a portable, pre-designed bus interface, that takes care of the bus interface signals, bus protocol and other interface issues. The IPIF presents an interface to the user logic called the IP InterConnect (IPIC). User logic is a logic that has been designed with an IPIC interface to make use of the IPIF bus attachment and other services. User logic that is designed with an IPIC has the advantage that it is portable and can be easily reused on different processor buses by changing the IPIF to which it is attached.

IPIF Scheme

User Core Reference Design simplifies the task of attaching the IPIF to user logic. The user core reference design is a VHDL file that instantiates the IPIF and provides most of the VHDL code required to create a user core. The reference design provides a place to instantiate the user logic, which can be VHDL or a black box created from verilog, schematic, etc.

User Core Reference Design Scheme

IPIF Example

Components - Hardware PPC 405 PPC 405 Plb2Opb Bridge Plb2Opb Bridge OPB OPB Uartlite : RS232 Uartlite : RS232 GPIO: LEDs GPIO: LEDs GPIO: Push Buttons GPIO: Push Buttons GPIO: DIPs GPIO: DIPs SDRAM (8M*32) SDRAM (8M*32) PLB PLB User Core User Core Bram Bram System DCM System DCM System RESET System RESET

User Logic Receives 1 of 4 addresses ( “ 00 ”, ” 01 ”, ” 10 ”, ” 11 ” ). Receives 1 of 4 addresses ( “ 00 ”, ” 01 ”, ” 10 ”, ” 11 ” ). Each address correspond to a LED. Each address correspond to a LED. The appropriate LED is turned on/off according to the LSB of the data. The appropriate LED is turned on/off according to the LSB of the data. The data returned is the data received + const, when const is determined by each address. The data returned is the data received + const, when const is determined by each address. ( “ 00 ” : c=0, ” 01 ” : c=1, “ 10 ” : c=2, “ 11 ” :c=3) “ 10 ” : c=2, “ 11 ” :c=3) Bus2IP_Addr Bus2IP_Clk Bus2IP_CS Bus2IP_Data Bus2IP_RdCE Bus2IP_Reset Bus2IP_WrCE IP2Bus_ Data LED User Logic 1 bit 4 bit 32 bit

User Logic – VHDL (sample) addr <= Bus2IP_Addr(28 to 29); … if Bus2IP_CS = '1' and Bus2IP_WrCE = '1 ‘ then data <= Bus2IP_Data(24 to 31); data <= Bus2IP_Data(24 to 31); case addr is case addr is when "00" => led0 led0 <= Bus2IP_Data(31); when "01" => led1 led1 <= Bus2IP_Data(31); when "10" => led2 led2 <= Bus2IP_Data(31); when "11" => led3 led3 <= Bus2IP_Data(31); when others => null; when others => null; end case; end case; end if; ….

Software – main int main(){ Xuint32 Data=0, Res=0; Xuint32 Data=0, Res=0; Xio_Address addr; Xio_Address addr; unsigned int usec_time=50000; unsigned int usec_time=50000; xil_print( “ ***MY OPB-PLB USER LOGIC*** ” ); xil_print( “ ***MY OPB-PLB USER LOGIC*** ” ); check_sdram(); //calling check_sdram function check_sdram(); //calling check_sdram function check_leds(); //calling check_leds function check_leds(); //calling check_leds function addr=(Xio_Address)XPAR_PLB_USER_CORE_0_BASEADDR; addr=(Xio_Address)XPAR_PLB_USER_CORE_0_BASEADDR; while(1){ while(1){ Xio_Out32(addr, Data); Xio_Out32(addr, Data); usleep(1); usleep(1); Res=XIo_In32(addr); Res=XIo_In32(addr); xil_printf( “ Res=%d\n\r ”, Res); xil_printf( “ Res=%d\n\r ”, Res); usleep(usec_time); usleep(usec_time); }}

Software – Memory Check Function void check_sdram(){ … temp=sdram_location; temp=sdram_location; // writing to all the memory addresses // writing to all the memory addresses for(loop_count=0;loop_count<mem_size;loop_count++){ for(loop_count=0;loop_count<mem_size;loop_count++){ *sdram_location = loop_count; sdram_location++; sdram_location++; } sdram_location=temp; sdram_location=temp; // reading from all the memory address and comparing to expacted // reading from all the memory address and comparing to expacted for(loop_count=0;loop_count<mem_size;loop_count++){ for(loop_count=0;loop_count<mem_size;loop_count++){ sdram_data_read = *sdram_location; if(sdram_data_read!=loop_count) // failure – printing and exiting else sdram_location++ } xil_printf("SDRAM Test Passed\n\r"); xil_printf("SDRAM Test Passed\n\r");}

Software – LEDs Check Function void check_leds(){ … XGpio_mSetDataDirection(XPAR_LEDS_4BIT_BASEADDR, 0x00); XGpio_mSetDataDirection(XPAR_LEDS_4BIT_BASEADDR, 0x00); for (count=0; count < 16; count++) { for (count=0; count < 16; count++) { XGpio_mSetDataReg(XPAR_LEDS_4BIT_BASEADDR, ~count); XGpio_mSetDataReg(XPAR_LEDS_4BIT_BASEADDR, ~count); usleep(100000); usleep(100000); xil_printf("Leds Count=%d\n\r",count); } xil_printf("LEDS Test Passed\n\r"); xil_printf("LEDS Test Passed\n\r");}

Output

Comments The VHDL code was tested using ModelSim. The VHDL code was tested using ModelSim. Environment Testing – Using LEDs. Environment Testing – Using LEDs. The Evaluation Board is new, therefore required adjustments in the UCF file. The Evaluation Board is new, therefore required adjustments in the UCF file. Other Debug tools, such as Chip-Scope, where not used. Other Debug tools, such as Chip-Scope, where not used.

Other Examples Running Xilinx ’ s examples: Running Xilinx ’ s examples: Basic Components (GPIO). Basic Components (GPIO). Additional Memory. Additional Memory. 2 PowerPCs. 2 PowerPCs. IPIF example of LEDs Brightness. IPIF example of LEDs Brightness. User Logic: User Logic: On OPB On OPB On PLB On PLB

Goals – Second Part Implementing a signal processing algorithm based on a FIR/IIR Filter with Programmable coefficients. Implementing a signal processing algorithm based on a FIR/IIR Filter with Programmable coefficients. Simulating and checking the code of the algorithm in hardware and software. Simulating and checking the code of the algorithm in hardware and software. Running the algorithm on the board. Running the algorithm on the board.

Project schedule second semester 1 st week: Defining the algorithm to be implemented. Defining the algorithm to be implemented. 2 nd -3 rd week: Design of the algorithm – block scheme. Design of the algorithm – block scheme. 4 th week: Dividing the workload Software/Hardware and Estimating the FPGA ’ s volume. Dividing the workload Software/Hardware and Estimating the FPGA ’ s volume. 5 th -6 th week: Detailed design of each block from the scheme. Detailed design of each block from the scheme.

Project schedule second semester (cont) 7 th -9 th week: Hardware implementation Hardware implementation Software implementation. Software implementation. 10 th -end: Simulation Simulation Synthesis Synthesis Checking the algorithm using the evaluation board. Checking the algorithm using the evaluation board.

Thank You