Embedded Linux Systems Architecture ( eglisa | 35 hours )

• Basic familiarity with using a GNU/Linux system (e.g. Ubuntu) as an end user in user space 
• Basic familiarity with a command line shell 
• Basic knowledge of user space/application development with GNU/Linux 
• Basic knowledge concerning embedded processors and development boards 
• Basic C programming knowledge 
• …and/or or fear to learn the above… 

Course Objectives

To provide an understanding of the essentials of embedded GNU/Linux, how the bits and pieces fit together. What components are needed to build an embedded GNU/Linux system, where to get them from and how to configure/build/install them? Where to get help from? What about those software licenses? Hands-on exercises provide you with the necessary practical experience to go ahead and develop your own embedded GNU/Linux systems after completing this training successfully.

Description

This five day training class uses hands-on exercises combined with instruction to illustrate the concepts of embedded GNU/Linux. It is designed to bring you quickly up to speed. The philosophy, concepts and commands necessary to make effective use of GNU/Linux are described through a combination of theory and on-the-job training.

Don't reinvent the wheel, but learn from an experienced trainer and take home a working knowledge of GNU/Linux and the ability to use it effectively in your own embedded development project.

Who should attend?

Managers, project managers, software-, hardware-, development-, systems engineers, testers, administrators, technicians and other parties interested in the technology, who want to understand as quickly as possible how Embedded GNU/Linux works. You must use GNU/Linux or you have to luxury to decide whether it makes sense to use it or not. Maybe you already tried to use Embedded GNU/Linux, but are not quite sure that you did everything the right way. You currently use a different operating system and wand to figure out whether GNU/Linux might better and/or cheaper.

Delivery Options

All the training material is English, but the presentation of it can be in English or in German, as you wish, worldwide.

• on-site - instructor driven
• on-line - instructor driven
• on-site/on-line combination - instructor driven

Introduction

• History of Unix/Linux
• Free Software
• Unix Philosophy

HOST PLAYGROUND

• Play with GNU/Linux
  • architecture
  • shell
  • permissions
  • FHS (file hierarchy standard)
  • hard/soft links
  • real/effective uid/gid
  • scheduler
  • process/task/thread
  • IPC simple/advanced
    • pipes
    • signals
    • message queues
    • semaphores
    • shared memory
    • sockets
    • select/poll
  • IPC techniques to avoid
• Host Linux setup
  • Yocto/ELDK (cross/target tools, libraries, packages)
  • Terminal Emulation
  • Servers (DHCP, tftp, NFS)

TARGET PLAYGROUND

• files needed to run something on board
  • JTAG/BDI config
  • u-boot (checkout, config, build)
  • kernel (checkout, config, build)
  • rootfs
  • flat device tree
• build/execute what's applicable from above on the target board
• various rootfs
  • CRAMFS
  • ramdisk
  • MTD
  • JFFS2
  • roEXT2
  • ubi
• build/execute what's applicable from above on the target board
• comparison of root file systems
• debugging
  • simple tools
  • local/remote
  • user/kernel
  • gdb
  • gdbserver
  • JTAG/BDI (optional)
• profiling
  • gprof
  • gcov
  • oprofile

REAL-TIME

• prerequisites
  • interrupts
  • reentrant code
• real-time Linux
  • explicit/implicit preemption points
  • real-time preemption patch
  • fully preemptive kernel
  • hard real-time extensions
• Adeos/Xenomai
  • adeos patch
  • xenomai
  • patch/config/build kernel
  • run it on board

SW RELEASE

• administration
• development
• how to reproduce an SW release?

MISC

• getopt
• endianess
• cheat-sheets

Except where otherwise noted content on this course outline is licensed under Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).