© 2009 Imperas Ltd. Open Virtual Platforms, www.OVPworld.orgPage 1 Aug-09

Software Development using Software Development using Virtual PlatformsVirtual Platforms

Simon DavidmannSimon Davidmann Imperas CEOImperas CEO OVP founderOVP founder

DAC VP09 Workshop, 29 July 2009

© 2009 Imperas Ltd. Open Virtual Platforms, www.OVPworld.orgPage 2 Aug-09

Software Complexity Explosion

Multicore Proliferation

Move to Virtual Platforms for Software development

Adoption of new tools to produce higher quality embedded software

New Tools and Methodology New Tools and Methodology Needed for Embedded Needed for Embedded Software DevelopmentSoftware Development

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Virtual Platforms TypesVirtual Platforms Types Hardware Virtual Platforms

Timing / Cycle accurate Used for architecture performance analysis, drivers, firmware Models are very complex, slow, time consuming to build SystemC etc Main value is same performance as RTL, no Verilog license cost…

Software Virtual Platforms Instruction accurate Used for OS, applications Can be very fast, programmers views Model only what is needed in peripherals Complete system environment

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New New SoCSoC Embedded Software Embedded Software Development marketDevelopment market

Adoption over time

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Needs to be fast – to run full software, needs to be low cost – for massive deployment, needs to be easy to use for customers to be self sufficient, with full visibility to enable debug

Virtual platform: multicore simulation, user modeling, model library

Needs to target multi-core SoC software development and provide automation and efficiency with measurable quality building on virtual platforms

Softwar e

Verifica tion,

Debug

& Analy sis

Needs to remove complexity and infrastructure difficulties and costs while improving verification ability

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Must address parallel programming and multi-core platform issues

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nThe market need for new embedded software tools for single- and multi-core System on Chip ICs is large and growing

2009

Older approach was to use prototypes, breadboards, FPGA, previous generation – this fails to satisfy for next generation complexity

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Virtual Platforms (OVP) are the Virtual Platforms (OVP) are the foundation for the next generation of foundation for the next generation of [embedded] software development [embedded] software development environments environments –– especially for multicoreespecially for multicore

Page 5

Adoption over time

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Open Virtual Platforms started March 2008, 28 partners Today: 1400 registered users, 10,000 downloads, 200+ companies using

Virtual platform: multicore simulation, user modeling, model library

Needs to target multi-core SoC software development and provide automation and efficiency with measurable quality building on virtual platforms

Verifi cation

, Deb ug

& Ana lysis

tools for s

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Needs to remove complexity and infrastructure difficulties and costs while improving verification ability

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Must address parallel programming and multi-core platform issues

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OVP fulfils this need

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What is in OVP?What is in OVP? Modeling APIs

Publishing of C OVP APIs for Processor, Peripheral, and Platform modeling Documentation & header files

Open Source library of models C source of models written to C OVP APIs Processor models of ARM, ARC, MIPS, OpenRisc OR1K, x86, … Peripheral models of standard embedded devices Example embedded platforms in C, C++, SystemC, TLM2.0

Including full platforms that boot operating systems like Linux, Nucleus OVP reference simulator, free for non-commercial use

Runs processor models fast, 500 MIPS typical Interfaces to GDB via RSP/socket MP Capable, scalable and very efficient Can encapsulate existing processor models (ISS) Callable with C/C++/SystemC wrapper

Website community/portal Ecosystem growing for model and tool developers and users

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OVPsimOVPsim booting booting uClinuxuClinux on ARM on ARM AtmelAtmel AT91sam7AT91sam7

ARM7TDMI

16-Mbit Flash MemoryAIC

Watchdog

Power Saving

Chip Id

Parallel IO Controller

USART

USART

SRAM

ASB

Timer Counter

Terminal

Keyboard

in te

rru pt

s

Boot uClinux

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ARM920T

Flash

LCD Controller

Keyboard/Mouse

SSRAM

SDRAM

config regs

LED

RTC

MMC Interface

UART

GPIO

PIC

PIC

AHB Decoder

UART

OVPsimOVPsim booting Nucleus on booting Nucleus on ARM Integrator / ARM920ARM Integrator / ARM920

Keyboard

Easy to run

telnet telnet localhostlocalhost 99999999

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ARM920T

Flash

LCD Controller

Keyboard/Mouse

SSRAM

SDRAM

config regs

LED

RTC

MMC Interface

UART

GPIO

PIC

PIC

AHB Decoder

UART

OVPsimOVPsim booting Linux on booting Linux on ARM Integrator / ARM926ARM Integrator / ARM926

Keyboard / Mouse

Boot Linux

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OVPsimOVPsim MIPS Linux platformMIPS Linux platform

Boot Linux on Windows PC… Easy to run: platform .exe vmlinux

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ARM920T

Flash

LCD Controller

Keyboard/Mouse

SSRAM

SDRAM

config regs

LED

RTC

MMC Interface

UART

GPIO

PIC

PIC

AHB Decoder

UART

OVPsimOVPsim Heterogeneous Platform Heterogeneous Platform ARM Nucleus / MIPS LinuxARM Nucleus / MIPS Linux

Mouse

Keyboard

MIPS32 34Kc dualcore

UART (TTY2) (16450)

UART (TTY1)

(SuperIO)

UART (TTY0)

(SuperIO)

Memory (RAM)

Malta FPGA

KbControl (SuperIO)VGA

PIIX4 (Base)

USB (PIIX4)

PM (PIIX4)

IntControl (PIIX4)IDE

PCI BUS

PCI IACK

SysControl (GT64120)

LOCAL BUS

RTC (PIIX4)

Timer (PIIX4)

PCI Config D

yn am

ic B

us C

on ne

ct io

n

br

br

Run Platform

Memory (RAM)

telnet telnet localhostlocalhost 99999999

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Software debug on prototype:Software debug on prototype: Run Run gdbservergdbserver on target and Eclipse on host on target and Eclipse on host to debug application on targetto debug application on target

TCP/IP

Host

Remote Target

BlackBox Window Manager

gdbserver

application

Redhat LinuxRedhat Linux

Eclipse/CDT

Debian Linux 2.6

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Virtual Platform as Remote Target

Using a Virtual Platform from Using a Virtual Platform from OVP provides exactly the same OVP provides exactly the same environmentenvironment

TCP/IP

Host

Debian Linux 2.6

BlackBox Window Manager

gdbserver

application

Redhat LinuxRedhat Linux

Eclipse/CDT

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Demo: Developing Software on Demo: Developing Software on Virtual PlatformsVirtual Platforms

Virtual Platforms are replacing hardware prototypes for software development

It’s a new world, with familiar tools Virtual Platforms provide significant benefits Software development uses standard tools

Eclipse, GDB, gdbserver

Benefits of Virtual Platforms for software development Easier to deploy, more reliable, deterministic Often much faster Easier to use for regression testing, improving quality Available much sooner (developing SoC takes 2 years of delay…) With OVP, the models are free, fast, and easy to use…

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