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Course Outline
Course Outline
Introduction
- History of Unix/Linux, licenses, standards, working with free software, finding assistance, spelunking, and the Unix philosophy
Embedded Specifics
- Comparison of Linux on the desktop versus Linux in embedded systems, cross/native toolchains, pre-built toolchains, build systems, C libraries, etc.
Evaluation Board
- Boot process overview and observation
Yocto Introduction
- Definition of Yocto, reasons for using the YP, overview of the YP, Poky, BitBake, OE-Core, and Metadata
The YP Autobuilder
- Overview of the YP Autobuilder, Docker container operations (pull, launch)
The YP Workflow
- Introduction
- Workflow and OE architecture
- Configuration (User, Metadata, Machine, Distribution Policy)
- Sources
- Build Process (Source fetching, Patching, Configure/Compile/Install, Pseudo, Recipe examples, Output analysis/Packaging, Image Generation, SDK Generation)
- Customizing Images (Introduction, local.conf, IMAGE_FEATURES, custom .bb files, custom packagegroups)
BitBake
- History
- Syntax
- Debugging techniques (debug levels, locating recipes/images/packagegroups, BitBake environment/tasks/logging, forcing specific tasks, cleansstate, invalidating stamps, devshell, dependency explorer, terminating all BitBake instances, BitBake graphical wrapper)
Layers
- Introduction, bitbake-layers tool, yocto-layer tool
BSP
- Introduction, System Development Workflow, BSP Developer’s Guide (bsp-tool)
Kernel
- Introduction, System Development Workflow, Kernel Development Manual (defconfig, defconfig + configuration fragment, in-tree kmod, out-of-tree kmod, FDT, etc.)
Application Development Toolkit
- Introduction, Cross-Development Toolchain, Sysroot, ADT- Eclipse Yocto Plug-in, QEMU Emulator, User Space Tools
- Installing ADT & Toolchains
- Using a Cross-Toolchain tarball (Introduction, Building/Installing the Cross-Toolchain tarball, Cross-Toolchain + Makefile/Autotools/Autotools lib + App, recipes)
- Using the ADT Installer (Introduction, Web Server, Build image + ADT installer, Configure + run ADT installer, adding ADT installer to webserver, ADT installer on host)
Eclipse
- Introduction, Application Development Workflow
- Working with Eclipse (rootfs features, kernel + FDT, rootfs, installing JDK, installing Eclipse, configuring Eclipse, installing Yocto Plugin, configuring the Yocto Plugin, creating an Autotooled Project, configuring Cross-Toolchains, building the project)
Debugging
- Introduction, gdb, gdb remote debugging, debugging with Eclipse (gdb remote), running from Eclipse (remote)
Profiling/Tracing
- Introduction, perf, gprof, gcov, strace, ftrace, systemtap, oprofile, LTTng + Eclipse (data visualization)
Package Management
- Working with packages, IPK, creating a package feed, installing a package with opkg on the target
Licensing
- Introduction, adding custom licenses, Open Source License Compliance
Devtool
- Introduction, 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).
Requirements
Prerequisites
- 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/kernel space programming within GNU/Linux
- Intermediate knowledge of C programming
- Completion of Embedded GNU/Linux Systems Architecture (5 days) is strongly recommended, unless you are already familiar with the material covered in that training.
- Practical experience with Embedded GNU/Linux (kernel, userspace, root file system, tools) is required to follow the Yocto training.
- Attendance at Embedded GNU/Linux Device Drivers and Kernel Internals (5 days) may be helpful but is not a strict prerequisite. It is sufficient to know how to build the GNU/Linux kernel, kernel drivers (in-tree and out-of-tree), and the FDT from the kernel side to participate in the Yocto training.
28 Hours
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