Introduction to Embedded GNU/Linux - Short Crash Course
his one day training class uses hands-on exercises combined with instruction to illustrate some basic concepts of Embedded GNU/Linux. Hands on sessions are performed with a toolchain from the the freely available Yocto Project, on a Beagle Bone Black. This enables you to take the course material home and work with it. The whole workshop is designed to bring you quickly up to speed. The concepts and commands necessary to make effective use of Embedded 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 Embedded GNU/Linux and the ability to use it effectively in your own embedded development project.
What is GNU/Linux?
Working with free software
The Unix Philosophy
Stuff needed (part 1)
What is the Beagle?
Booting the Beagle
Partition/Format SD card
Populate partitions with given boot-loader, kernel, rootfs
Configure serial console
Board booting Linux
Stuff needed (part 2)
What is U-boot?
What does it do?
Flat device tree
What is a flat device tree?
What is uImage?
Use rootfs from the Yocto Project
Hello Kernel, module-init-tools, Kconfig, Kbuild
out of tree, in tree
Registration, Initialization, Open, Release,...
Miscellaneous Character Drivers
Simple debugging tools
lsof, ltrace, strace, proc, top, netstat, syslog
Advanced debugging tools
What’s a debugger?
kgdb/kdb + agent-proxy
What is profiling?
What is tracing?
time, gprof, gcov, oprofile
ftrace, kernelshark, LTTng
top, latencytop, powertop, powerdebug, crash, systemtap
Except where otherwise noted content on this course outline is licensed under Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).
The Yocto Project - An Overview - hands-on
This four day training combines theory with hands-on exercises in order to introduce the Yocto Project.
It answers frequently asked questions like:
Is it really necessary to use another version of the toolchain/libraries/packages for each and every GNU/Linux project and an top of that to follow a different work-flow?
Can you ensure that the development environment is identical for all developers/suppliers and that you can still produce identical builds like today in 10+ years from now?
Can the YP help find out under what software licenses the packages you use are licensed?
... and much more
Hands-on sessions are performed on target hardware (e.g. Beagle Bone Black Rev. C - http://beagleboard.org/BLACK). After the training you will be able to download a docker image with Ubuntu 14.x and all dependencies pre-installed plus the examples in order to work with the course material in your own labs. Please note that this is not an introductory course to Embedded GNU/Linux. You should already know how Embedded GNU/Linux works and how to configure/build the GNU/Linux kernel and kernel drivers.
Who should attend?
You already use GNU/Linux for your projects and have probably heard about the Yocto Project, but did not dare to have a closer look into it, or had difficulties using it. You don’t know whether and how your daily work-flow can be accommodated in the YP and generally find the YP rather complicated. Why do we need all this since up to know everything was (supposedly) much easier? After the training you should be able to decide whether you need the YP or not. The workshop is aimed at software-, development-, system engineers, testers, administrators, engineers and other parties interested in the YP, with a solid knowledge of Embedded GNU/Linux.
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*)**)
During the training we’ll provide laptops*), boards*)**), workbooks (in English)*)**), remote access to servers and boards**), screen-sharing**), audio-bridge**).
history of Unix/Linux, licenses, standards, work with free software, finding help, spelunking, the Unix philosophy
Linux on the desktop compared to Linux in an embedded system, cross-/native toolchains, pre-built toolchains, build systems, C libraries,...
How does it boot?, See it booting
What is Yocto? Why use the YP? What is the YP?, Poky, BitBake, OE-Core, Metadata
The YP Autobuilder
What is the YP Autobuilder?, Docker container (pull, launch container)
The YP Workflow
Workflow, OE architecture
Configuration (User, Metadata, Machine, Distribution Policy)
Build (Source fetching, Patching, Configure/Compile/Install, Pseudo, Examples of recipes, Output analysis/Packaging, Image Generation, SDK Generation)
Customizing Images (Intro, local.conf, IMAGE_FEATURES, custom .bb files, custom packagegroups)
Debugging (debug level, find recipes/images/packagegroups, BitBake environment/tasks/logging, force build/specific task, cleansstate, invalidate stamp, devshell, dependency explorer, kill all BitBake instances, BitBake graphical wrapper)
Intro, bitbake-layers tool, yocto-layer tool
Intro, System Development Workflow, BSP Developer’s Guide (bsp-tool)
Intro, System Development Workflow, Kernel Development Manual (defconfig, defconfig + configuration fragment, in tree kmod, out of tree kmod, fdt,…)
Application Development Toolkit
Intro, Cross-Development Toolchain, Sysroot, ADT- Eclipse Yocto Plug-in, The QEMU Emulator, User Space Tools
Installing ADT & Toolchains
Using a Cross-Toolchain tarball (Intro, Building/Installing the Cross-Toolchain tarball, Cross-Toolchain + Makefile/Autotools/Autotools lib + App, recipes)
Using the ADT Installer (Intro, Web Server, Build image + ADT installer, Configure + run ADT installer, add ADT installer to webserver, ADT installer on host)
Intro, Application Development Workflow
Working with Eclipse (rootfs features, kernel + fdt, rootfs, install JDK, install Eclipse, configure Eclipse, install Yocto Plugin, Configure the Yocto Plugin, Create Autotooled Project, Configuring the Cross-Toolchains, Build the Project)
Intro, gdb, gdb remote debugging, (gdb remote) Debugging with Eclipse, (remote) Run from Eclipse
Intro, perf, gprof, gcov, strace, ftrace, systemtap, oprofile, LTTng + Eclipse (data visualization)
Working with Packages, IPK, creating a package feed, installing a package with opkg on the target
Intro, Add custom license, Open Source License Compliance
Intro, devtool, real-world showcase meta-cfengine
Except where otherwise noted content and this course outline are licensed under Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0).