UML for SOC Design GRANT MARTIN WOLFGANG MÜLLER. Edited by. Tensilica Inc., Santa Clara, CA, USA. and. University of Paderborn, Germany

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1 UML FOR SOC DESIGN

2 UML for SOC Design Edited by GRANT MARTIN Tensilica Inc., Santa Clara, CA, USA and WOLFGANG MÜLLER University of Paderborn, Germany

3 A C.I.P. Catalogue record for this book is available from the Library of Congress. ISBN (HB) ISBN (HB) ISBN ( e-book) ISBN (e-book) Published by Springer, P.O. Box 17, 3300 AA Dordrecht, The Netherlands. Printed on acid-free paper All Rights Reserved 2005 Springer No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Printed in the Netherlands.

4 Grant Martin would like to dedicate this book to his wife, Margaret Steele, and daughters Jennifer and Fiona. Wolfgang Mueller dedicates this book to his wife, Barbara, and children Maximilian, Philipp, and Tabea.

5 Contents Preface xi Chapter 1 When Worlds Collide: Can UML help SoC Design? 1 Grant Martin, Wolfgang Mueller 1.1. Introduction New Directions for HW-SW Interaction UML UML Profiles Executable UML UML in the SoC Design Process Conclusions 15 Chapter 2 Why Systems-on-Chip needs More UML like a Hole in the Head 17 Stephen J. Mellor, John R. Wolfe, Campbell McCausland 2.1. Problem and Solution Executable and Translatable UML Application Models Manipulating the Application Models Marks Work in Context How Does All This Stack Up? A Hole in the Head? 36 Chapter 3 UML as a Framework for Combining Different Models of Computation 37 Peter Green 3.1. Introduction Modeling Framework Modeling Synchronous Dataflow Graphs in UML Communication and Concurrency Class and Object Relationships The Shell Model Hybrid Shells Mapping Shell Models to Software and Hardware Case Study: A Simple Modem Conclusions 61 vii

6 viii UML FOR SOC DESIGN Chapter 4 A Generic Model Execution Platform for the Design of Hardware and 63 Software Tim Schattkowsky, Wolfgang Mueller, Achim Rettberg 4.1. Introduction Related Works The Model Execution Platform (MEP) Code Generation for Hardware Implementation The MEP Virtual Machine Conclusions 87 Chapter 5 Hardware/Software Codesign of Reconfigurable Architectures Using UML 89 Bernd Steinbach, Dominik Fröhlich, Thomas Beierlein 5.1. Introduction A Platform Model Driven Development Approach Mapping Design Models onto Implementation Models Mapping Implementation Models onto Platform-Specific Implementations Experimental Results Conclusions 116 Chapter 6 A Methodology for Bridging the Gap between UML and Codesign 119 Ananda Shankar Basu, Marcello Lajolo, Mauro Prevostini 6.1. Introduction State of the Art and Contribution The ACES Codesign Flow Modeling Hardware Related Aspects in UML Model Verification in UML Transformation from UML to Codesign Conclusions 146 Chapter 7 UML Tailoring for SystemC and ISA Modelling 147 Giovanni Agosta, Francesco Bruschi, Donatella Sciuto 7.1. Introduction Abstraction and Application Specificity UML Transaction Level Modeling Application Specific UML Modeling Concluding Remarks 173 Chapter 8 Model-Driven SoC Design: The UML-SystemC Bridge 175 Kathy Dang Nguyen, Zhenxin Sun, P.S. Thiagarajan, Weng-Fai Wong 8.1. Introduction SystemC Preliminaries UML Modeling Implementation Examples and Results Conclusion 196

7 Contents ix Chapter 9 A Comparison between UML and Function Blocks for Heterogeneous 199 SoC Design and ASIP Generation Lisane Brisolara, Leandro B. Becker, Luigi Carro, Flavio Wagner, Carlos E. Pereira 9.1. Introduction A Methodology for SoC Design and ASIP Generation Case Study: Evaluating High Level Models Problems in Mapping from High Level Models to HW SW SoC Related Works Conclusions 222 Chapter 10 A Model-Driven Development Process for Low Power SoC Using UML 223 Yves Vanderperren, Wim Dehaene Introduction UML and System Design Process and Model-Driven Development Model-Driven Development for SoC: Case Study Conclusions 251 References 253

8 Preface The last several years have seen significant progress on two related fronts in hardware and software design for electronic systems. The first is the rapid growth in the design of complex System-on-Chip devices (SoC). The second is progress in adding capabilities to the Unified Modeling Language (UML) to better support the design of real-time and embedded systems, culminating in the UML 2.0 specification which is nearing final approval. It is thus an excellent time to evaluate the combination of these two topics into a unified theme: UML for SoC design. UML 2.0 provides a collection of 13 different diagrams, which were originally targeted for application in software engineering. On the other hand, as hardware systems exceed a specific complexity, new means and methodologies are required to close the productivity gap for SoC design. UML and the closely related concept of Model-Driven Architecture (MDA) based design provide concepts, which are both of potential interest and real application for hardware design and hardware/software co-design, respectively. At DAC 2004, we organized a UML for SoC Design workshop as a discussion forum to bring hardware, SoC, and UML experts together. For that workshop, we received great international interest and contributions from Asia, Europe, and North America. The success of the workshop has demonstrated that there is a great interest in both academia and industry to create and investigate joint efforts in SoC design and UML. This book is a collection based on the main contributors to the DAC 2004 UML for SoC Design workshop, providing the first set of papers for such a joint effort. Some additional contributions to the book were made by other experts who did not present at the workshop, The selected chapters present approaches to executable UML, UML translations for FPGA synthesis and SystemC simulation, as well as UML-specific SoC methodologies. They give insights into the current state of the art and the most recent advances in applying UML to SoC design. They provide a representative overview of current UML activities in SoC design and give an excellent introduction to UML s application in hardware and hardware/software codesign. xi

9 xii UML FOR SOC DESIGN We wish to acknowledge the contributions of all the contributors and participants in the 2004 DAC UML for SoC Design workshop, and the support of the DAC Executive Committee, Special Initiatives Chair, and the conference staff, without whom this book would not have been possible. Grant Martin Tensilica Inc., USA Wolfgang Mueller Paderborn University, Germany

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