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Student: Khinich Fanny

Instructor: Fiksman Evgeny

ספרתיות למערכות המעבדהמהירות

High Speed Digital Systems Laboratory

הטכניון - מכון טכנולוגי לישראל

הפקולטה להנדסת חשמל

Technion - Israel institute of technologydepartment of Electrical Engineering

Final Stage Presentation

Virtex II Pro FPGADynamic Reconfiguration

Spring semester 2007

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Abstract

• Partial reconfiguration involves defining distinct portions of an FPGA design to be reconfigured while the rest of the device remains in active operation.

• Active partial reconfiguration is done when the device is active.

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Virtex II Pro Architecture

Configuration Data

Bits that directly define the state of programmable logic.

Configuration File

The internally stored file that controls the FPGA so that it performs the desired logic function.

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Configuration of Virtex II Pro

Configuration Frame The smallest number of

bits that can be read or written through the configuration interfaces is one frame.

Configuration Interface A logical interface

through which configuration commands and data can be read and written.

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Modular Design

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Module-based Partial Reconfiguration

Module-based Partial Reconfiguration is used when

communication is needed between modules.

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Physical Limitations

For current FPGA devices, data is loaded on a column-basis, with the smallest load unit being a configuration bitstream "frame".

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Physical Limitations

1. Height

2. Width

3. Horizontal placement

4. All logic encompassed by the width of the module are considered part of it’s "frame."

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Physical Limitations

5. Clocking logic.

6. IOBs immediately above and below reconfigurable module.

7. IOBs on the edge of a leftmost or rightmost slice reconfigurable module.

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Implementation details

The considered physical limitations are applied on the bitstream compilation stage:

ngdbuild –uc system.ucf

Partial bitstream:

bitgen -g ActiveReconfig:Yes …

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The flow of the project

• 1.Partial reconfiguration without processor.

• 2.Partial reconfiguration using PowerPC processor.

• 3. Partial reconfiguration using Microblaze processor

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1.System Architecture For No processor design

Register1 Bus Macro Logic block

Bus MacroRegister2

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1.Implementation

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1.Final Implementation

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2.System Architecture With PowerPC

PLB OPBControllerInterface

PPC405 BRAMUART

ReconfigurableLogic

RAM

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2.Implementation

• 1.Bulding the system in XPS.

• 2.Synthesis using Project Navigator for the top of full design.

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2.Implementation

• Implementation of full design

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2.Implementation

• 4.Generation of bitstream.

• 5.Initialization of Brams (memory)

• using command prompt :

• data2mem …

• 5.Download to the device.

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2.Modular design for system with Power PC

• There was no way to place and routed reconfigurable module into design since Xilinx Tools generated the follow error:

• FATAL_ERROR:Par:Portability/export/Port_Main.h:127:1.2 - This application has discovered an exceptional condition from which it cannot recover.

• Process will terminate. For more information on this error, please consult the Answers Database or open a WebCase with this project

attached at http://www.xilinx.com/support.

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3.System architecture and implementation with Microblaze

• The same flow was used to build system using Microblaze (soft-core processor) instead of PowerPC (hard-core processor)

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Summary table

Achievements:

1.Partial reconfiguration of the system without processor.

Failures:

1.Partial modular reconfiguration for full system design.

2.Working Full system Design (with processor).