memory architecture exploration for programmable embedded systems

... algorithm. Memory Architecture Exploration for the Compress Ker-nel . Memory Modules and Connectivity Exploration for theCompress Kernel. Memory Exploration for the Compress Kernel. Memory Exploration ... Compress Kernel. Memory Exploration for the Li Kernel . Memory Exploration for the Li Kernel . Memory Exploration for the Vocoder Kernel. Memory Exploration for the Vocoder Kernel.5.15.25.35.45.55.65.75.86.16.26.36.46.56.66.71001001111121131151151161177076828486889798This ... of memory architecture exploration and optimizations for embedded systems. Chapter 3: Early Memory Size Estimation. In order to drive design space exploration of the memory sub-system, we perform...

... performed.INTRODUCTION 3Platform Architecture MappingPerformanceNumbersApplicationModelsPerformanceAnalysisFigure 1.2: Y-chart approach for system evaluation.application model to the architecture ... of the platform bymapping each application onto the platform architecture by means of performanceanalysis. The resulting performance numbers may inspire the designer to improvethe architecture, ... developing theSesame framework [23], [78] for the efficient system-level performance evalua-tion and architecture exploration of heterogeneous embedded systems targeting themultimedia application...

... IntroductionNowadays, embedded systems are playing a major role on the development of technology. Embedded systems are present in almost all mobile and electrical devices. The goals of embedded systems are ... java bytecode, we have developed a design exploration and prototypyingplatform, using an open source Kaffe technology for embedded platform [2]. The embedded Kaffetechnology allows the development ... secure cross-platform software, and the Kaffevirtual machine (KVM) is the cornerstone of this technology.2. Specification of eEmbedded Kaffe systems The target architecture for such systems consists...

... 7Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Free Software tools for embedded systems C library for the target deviceC library options18Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008uClibc toolchainsFree Electrons uClibc toolchainshttp://free­electrons.com/community/tools/uclibcRun on i386 GNU/LinuxSupported platformsarm, armeb, i386, m68k, ppc, mips, mipsel, sh17Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Get a precompiled toolchainCan get one from several locations ... 1Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Free Software tools for embedded systems Free Software tools for embedded systems Thomas Petazzoni / Michael OpdenackerFree Electronshttp://free­electrons.com/Created with OpenOffice.org 2.x24Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Scratchboxhttp://scratchbox.org/ ­ A cross­compiling toolkit projectMakes it easier to cross­compilea complete embedded Linux system.Works by allowing tools to be cross­compiled in a transparent way, making building tools believe they are doing a native compile job.Supported platforms: arm, x86Uses the qemu emulator to transparently run built arm binaries.Experimental support for ppc, mips and cris.10Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Honey, I shrunk the programs!C program ... 311 K25Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Scratchbox featuresMain benefitsChrooted environment:you are still on the host, but you only see the target files.Transparent cross­compiling: the cross­compiler looks like a native one.Transparent execution: either through remote execution on the target. Or through CPU code emulation (qemu).Other featuresShips with cross­compiling toolchainsand software to create Debian packages.Supports both uClibc and glibc.Very basic root filesystems available.26Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Toolchains ­ useful resourceseLinux.org toolchain page:http://elinux.org/Tool_Chains27Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Cross­compiling toolchains ­ SummaryBuilding a toolchain by yourselfTough and very long to master.Ready­to­use toolchainsAvailable from several locations for most platforms.Tools to build toolchains: Buildroot and Crosstool.Make it easy to create a toolchain for your exact needs.Build systems:  Scratchbox, OpenEmbedded (see annex section)Help you to create and populate root filesystem.28Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Practical lab – Using buildrootTime to start Lab 1!Configure buildrootRun it to build your own cross­compiling toolchain29Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationEmulators3Free Software tools for embedded systems © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comJan 24, 2008Best viewed with...

... hexadecimal number. For example: 0xFFF0b is used to denote a binary number. For example: 0b0101011.5— Updates and Supplementary InformationIf you are looking for more information on the thermostat ... of any information herein and is not responsible for any errors or omissions. The publisher assumes no liability for damages resulting from the use of the information in this book or for any ... one multi-bit port for switching HVAC: probably only 3 pins necessary • one multi-bit I/O interface for display • one multi-bit I/O interface for keypad • one A/D device for temperature sensing...

...

... sub-way information for New York City.1 Multimodal Mobile Information AccessIn urban environments tourists and residents alikeneed access to a complex and constantly changingbody of information ... Users can ask for informationabout restaurants, such as phone numbers, addresses,and reviews. For example, a user might circle threerestaurants as in Figure 3 and say phone numbers for these three ... vocabulary for multimodal and pen-based commands.Gestures are represented in the ink meaning lat-tice as symbol complexes of the following form: GFORM MEANING (NUMBER TYPE) SEM. FORMindicates...

... presents PADS,apolicy architecture for build-ing distributed storage systems. A policy architecture hastwo aspects. First, a common set of mechanisms that al-low new systems to be implemented ... need for new systems. This paper presents PADS,apolicy architecture thatsimplifies the development of distributed storage sys-tems. A policy architecture has two aspects.First, a policy architecture ... ofservers. Stackable file systems [10] seek to provide away to add features and compose file systems, but it fo-cuses on adding features to local file systems. Some systems, such as Cimbiosys...