MDE based FPGA physical Design Fast prototyping with Smalltalk

MDE based FPGA physical DesignFast prototyping with Smalltalk

Ciprian Teodorov, Loïc Lagadec

Loic.lagadec@univ-brest.fr

Lab-STICC MOCS UMR 3192

FPGAs

Compute node

Programmable interconnection

I1+i2i1

i2

LUT LUT

LUT

LUTLUTLUT

LUT

i1

i2I1-i2

LUT

LUT E/S

µP

“Flexible” hardwareTime to market

Hard to programHard to debug

FPGAs

“Flexible” hardwareTime to market

Hard to programHard to debug

EDA required !

•C to circuit

•Debug

•Benchmarking

Our Smalltalk-based EDA legacy

Legacy backfires

Early developments (MADEO) started in 1996

Fast evolving domain (Moore + Murfy)

Refactoring is not enough to keep in the race

We have to re-design our framework

New direction

We need to shift from a generic solution to be tailored on demand

Toa repository of model, algorithms, components

In order to deliver PerformancesScalabilityFlexibilityDurability

LEGACY

Front end

High level synthesis (compilation)

Ressources allocation (logic synthesis)

C code

Circuit

Programming an FPGA in 4 steps

TestbenchesHW

Prototype

Compilation Simulation Validation

Exploration

Application Compiler TestbenchesHW

PrototypeSynthesizer

Synthesis/Compilation Simulation Validation

P&R Bitstreamgenerator

ConfigurationController

10

Spécification ArchitectureSpécification Architecture

ArchitecturespecificationArchitecturespecification

ADLDescription

ADLDescription

ADL Based EDA generators

Zone

Resources

ADLDescription

ADLDescription

Bitstreammodel

Bitstreammodel

Resourcemodel

Resourcemodel

BistreamBistream ArchitectureVHDL

ArchitectureVHDL

Configurationcontroller

Configurationcontroller

Simulation & synthesisSimulation & synthesis

Configurationmodel

Configurationmodel

Reconfigurable zones

description

Reconfigurable zones

description

Prototype

ZoneZone

Context

11

Behavioralcode

Our flow

12

Some examples

RE-DESIGN

Goal oriented view extraction

Tool engine

Models as common vocabulary

Combinational circuit modeling

Target modeling

Re-design / copy down

CONCLUSION

Let’s try to summarize

Succes: target, tool flow

Conclusion

Future work: Tools integration (eg Mondrian integration)Performances improvementTest coverageAlgorithm pick and play GUI

Thank you for your attention