Fpga

32

Transcript of Fpga

Page 1: Fpga

FPGA hacking with Free Software Tools

Pramode C.E

http://pramode.net

March 12, 2016

Page 2: Fpga

What is this?

Pramode C.E FPGA hacking with Free Software Tools

Page 3: Fpga

From NAND to Tetris

Pramode C.E FPGA hacking with Free Software Tools

Page 4: Fpga

Can you build the Nand2Tetris CPU on real h/w without having towire up hundreds of gates on prototyping boards?

Pramode C.E FPGA hacking with Free Software Tools

Page 5: Fpga

Field Programmable Gate Arrays (FPGA's)

Pramode C.E FPGA hacking with Free Software Tools

Page 6: Fpga

How does an FPGA work?

Pramode C.E FPGA hacking with Free Software Tools

Page 7: Fpga

Programming an FPGA

Circuit is described using Verilog / VHDL

Simulated to ensure correct operation

Synthesized to a netlist

Place-and-route

Send the "bitstream" to the FPGA

Pramode C.E FPGA hacking with Free Software Tools

Page 8: Fpga

Programming an FPGA

Simulation can be done using purely free software tools(example: iverilog)

Proprietary tools required for generating the "bitstream" whichwill con�gure the FPGA.

Pramode C.E FPGA hacking with Free Software Tools

Page 9: Fpga

The IceStorm Project

Home Page: cli�ord.at/icestorm

Target: Lattice Semiconductor's ICE40 FPGA's

Main Tools: yosys (synthesis), arachne-pnr (place androute),icepack(�le format conversion),iceprog(deviceprogramming)

Pramode C.E FPGA hacking with Free Software Tools

Page 10: Fpga

Hello, World!

A simple Verilog model:

module And2(input a, b, output c);

assign c = a & b;

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 11: Fpga

A NAND Gate

module Nand2(output c, input a, b);

assign c = ~(a & b);

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 12: Fpga

A NAND Gate - by combining modules

module Nand2(output c, input a, b);

wire f;

and G1(f, a, b);

not G2(c, f);

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 13: Fpga

But where is the hardware??

The Lattice IceStick evaluation board

Pramode C.E FPGA hacking with Free Software Tools

Page 14: Fpga

LED On!

Put on LED1 on the IceStick board. A �le with pin-mappings forLED1,LED2 etc is needed for proper operation.

module Led(output LED1, LED2, LED3, LED4, LED5);

assign LED1 = 1;

assign LED2 = 0;

assign LED3 = 0;

assign LED4 = 0;

assign LED5 = 0;

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 15: Fpga

LED On!

Here is the build script for the previous program(led.v is the verilogsource and led.pcf is the pin mapping):

yosys -p "synth_ice40 -blif led.blif" led.v

arachne-pnr -d 1k -p led.pcf led.blif -o led.asc

icepack led.asc led.bin

iceprog led.bin

Pramode C.E FPGA hacking with Free Software Tools

Page 16: Fpga

LED On!

And here is led.pcf:

set_io LED1 99 # red

set_io LED2 98 # red

set_io LED3 97 # red

set_io LED4 96 # red

set_io LED5 95 # green

Pramode C.E FPGA hacking with Free Software Tools

Page 17: Fpga

Concurrency and Hardware

y = (a or b) and (c or d) implemented on an FPGA:

Pramode C.E FPGA hacking with Free Software Tools

Page 18: Fpga

Concurrency and Hardware

y = (a or b) and (c or d) evaluated by a microprocessor(note:output produced by gcc -S):

movl a, %edx

movl b, %eax

movl %edx, %ecx

orl %eax, %ecx

movl c, %edx

movl d, %eax

orl %edx, %eax

andl %ecx, %eax

Pramode C.E FPGA hacking with Free Software Tools

Page 19: Fpga

A NAND Gate - in real Hardware!

PMOD1 and PMOD2 are pins 1 and 2 on the "PMOD" connectorof the IceStick board.

module Nand2(input PMOD1, PMOD2,

output LED1,LED2,LED3,LED4,LED5);

// Nand gate o/p is on LED1 only

assign LED1 = ~(PMOD1 & PMOD2);

assign LED2 = 0;

assign LED3 = 0;

assign LED4 = 0;

assign LED5 = 0;

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 20: Fpga

WhoAmI?

module WhoAmI(input PMOD1,PMOD2,PMOD3,

output LED1,LED2,LED3,LED4,LED5);

// only LED1 is significant

wire f1,f2,f3,f4;

assign f1 = (~PMOD1) & PMOD2 & (~PMOD3);

assign f2 = (~PMOD1) & PMOD2 & PMOD3;

assign f3 = PMOD1 & (~PMOD2) & PMOD3;

assign f4 = PMOD1 & PMOD2 & PMOD3;

assign LED1 = f1 | f2 | f3 | f4;

//assign LED2,3,4,5 to 0 ... lines not shown.

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 21: Fpga

WhoAmI?

module WhoAmI(input PMOD1,PMOD2,PMOD3,

output LED1,LED2,LED3,LED4,LED5);

// only LED1 is significant

always @(*)

begin

if(PMOD1 == 0) LED1 = PMOD2;

else LED1 = PMOD3;

end

//assign LED2,3,4,5 to 0 ... lines not shown

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 22: Fpga

WhoAmI? The Answer!!

Pramode C.E FPGA hacking with Free Software Tools

Page 23: Fpga

WhoAmI, again!

module WhoAmIAgain(input PMOD1,PMOD2,

output LED1,LED2,LED3,LED4,LED5);

always @(posedge PMOD1)

begin

LED1 <= PMOD2;

end

assign LED2 = 0;

assign LED3 = 0;

assign LED4 = 0;

assign LED5 = 0;

endmodule

Pramode C.E FPGA hacking with Free Software Tools

Page 24: Fpga

WhoAmIAgain? The Answer!!

Pramode C.E FPGA hacking with Free Software Tools

Page 25: Fpga

More demos!

Rotating LED's

Random bit generation using a Linear Feedback Shift Register

A UART transmitter

A full CPU running a FORTH system!

Pramode C.E FPGA hacking with Free Software Tools

Page 26: Fpga

Random bitstream using an LFSR

Pramode C.E FPGA hacking with Free Software Tools

Page 27: Fpga

A UART Transmitter

Pramode C.E FPGA hacking with Free Software Tools

Page 28: Fpga

Some other languages/frameworks available for hardwaredescription

MyHDL - uses Python

Chisel - uses Scala

Clash - uses Haskell

HardCaml - uses Ocaml

PSHDL - a beginner level tool which generates VHDL

IceStudio - Verilog code from block diagrams!

Pramode C.E FPGA hacking with Free Software Tools

Page 29: Fpga

The Future

The IcoBoard

Pramode C.E FPGA hacking with Free Software Tools

Page 30: Fpga

The Future

The IceZum

Pramode C.E FPGA hacking with Free Software Tools

Page 31: Fpga

The Future

Check out icoboard.org for more exciting news!

Pramode C.E FPGA hacking with Free Software Tools

Page 32: Fpga

Thank You! Questions welcome!

Pramode C.E FPGA hacking with Free Software Tools


Building Multi-Processor FPGA Systems · FPGA Fabric “Soft Logic” SoC/FPGA Hardware Architecture Overview ARM-to-FPGA Bridges Data Width configurable FPGA 42K Logic Macros Using

Building Multi-Processor FPGA Systems · FPGA Fabric “Soft Logic” SoC/FPGA Hardware Architecture Overview ARM-to-FPGA Bridges Data Width configurable FPGA 42K Logic Macros Using

LabVIEWTM FPGA Course Manual Sample · Lesson 4 FPGA I/O LabVIEW FPGA Course Manual 4-2 ni.com A. Introduction Inputs and outputs on FPGA targets allow you to connect the FPGA target

LabVIEWTM FPGA Course Manual Sample · Lesson 4 FPGA I/O LabVIEW FPGA Course Manual 4-2 ni.com A. Introduction Inputs and outputs on FPGA targets allow you to connect the FPGA target

FPGA Overview Die Photos: Virtex FPGA vs. Pentium IV

FPGA Overview Die Photos: Virtex FPGA vs. Pentium IV

Présentation FPGA

Présentation FPGA

FPGA ハードウェアソーティング アルゴリズムのFPGA実装...ハードウェアソーティング アルゴリズムのFPGA実装 広島大学 松本直之 FPGAとは

FPGA ハードウェアソーティング アルゴリズムのFPGA実装...ハードウェアソーティング アルゴリズムのFPGA実装 広島大学 松本直之 FPGAとは

Introducing the Spartan 3E FPGA and VHDLcdn.sparkfun.com/datasheets/Dev/FPGA/IntroToSpartanFPGABook.pdf · Introducing the Spartan 3E FPGA and VHDL i Introducing the Spartan 3E FPGA

Introducing the Spartan 3E FPGA and VHDLcdn.sparkfun.com/datasheets/Dev/FPGA/IntroToSpartanFPGABook.pdf · Introducing the Spartan 3E FPGA and VHDL i Introducing the Spartan 3E FPGA

FPGA Prototyping: HDL migration and FPGA Debug · FPGA Prototyping: HDL migration and FPGA Debug The main difficulty in FPGA prototyping is the short development cycle for complete

FPGA Prototyping: HDL migration and FPGA Debug · FPGA Prototyping: HDL migration and FPGA Debug The main difficulty in FPGA prototyping is the short development cycle for complete

FPGA based system design Programmable logic. FPGA Introduction FPGA Architecture Advantages & History of FPGA FPGA-Based System Design Goals.

FPGA based system design Programmable logic. FPGA Introduction FPGA Architecture Advantages & History of FPGA FPGA-Based System Design Goals.

FPGA computing @ SISSApeople.sissa.it/~inno/pubs/FPGA-computing.pdf · 2016-12-06 · FPGA Computing project ... FPGA (acronym of Field Programmable Gate Array ) is a misnomer ...

FPGA computing @ SISSApeople.sissa.it/~inno/pubs/FPGA-computing.pdf · 2016-12-06 · FPGA Computing project ... FPGA (acronym of Field Programmable Gate Array ) is a misnomer ...

Fpga 03-cpld-and-fpga

Fpga 03-cpld-and-fpga

ECE 448 Lecture 5 FPGA Devices & FPGA Design Flow...FPGA Devices & FPGA Design Flow ECE 448 Lecture 5 . 2 ... ECE 448 – FPGA and ASIC Design with VHDL 6 Xilinx " Primary products:

ECE 448 Lecture 5 FPGA Devices & FPGA Design Flow...FPGA Devices & FPGA Design Flow ECE 448 Lecture 5 . 2 ... ECE 448 – FPGA and ASIC Design with VHDL 6 Xilinx " Primary products:

Введение в LabVIEW FPGA - nstu.runitec.nstu.ru/.../LabVIEW_FPGA_Webcast_6.14_rus.pdf · LabVIEW LabVIEW FPGA Процессор реального FPGA времени 1 23

Введение в LabVIEW FPGA - nstu.runitec.nstu.ru/.../LabVIEW_FPGA_Webcast_6.14_rus.pdf · LabVIEW LabVIEW FPGA Процессор реального FPGA времени 1 23

Fpga Traffic

Fpga Traffic

Actel fpga

Actel fpga

Lecture FPGA-01 DE0 FPGA Development Board and Quartus II ...ljkau/Course/101/1012/... · Lecture FPGA-01 DE0 FPGA Development Board and Quartus II 9.1 FPGA Design Software Terasic

Lecture FPGA-01 DE0 FPGA Development Board and Quartus II ...ljkau/Course/101/1012/... · Lecture FPGA-01 DE0 FPGA Development Board and Quartus II 9.1 FPGA Design Software Terasic

curso fpga

curso fpga

FPGA Module How-To - documentation.help · LabVIEW FPGA Module installed. Communicating with FPGA VIs (FPGA Interface) This book provides functions and procedures that enable host

FPGA Module How-To - documentation.help · LabVIEW FPGA Module installed. Communicating with FPGA VIs (FPGA Interface) This book provides functions and procedures that enable host

FPGA intimn e - InstallFest fileObsah I Uvod do FPGA I Open-Source nastroje pro praci s FPGA I Podrobnosti technologie FPGA I Reverse-engineering FPGA prakticky Marek Va sut

FPGA intimn e - InstallFest fileObsah I Uvod do FPGA I Open-Source nastroje pro praci s FPGA I Podrobnosti technologie FPGA I Reverse-engineering FPGA prakticky Marek Va sut

FPGA Overview

FPGA Overview

DS0128 Datasheet IGLOO2 FPGA and SmartFusion2 SoC FPGA

DS0128 Datasheet IGLOO2 FPGA and SmartFusion2 SoC FPGA