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Mastering Embedded Linux Development

Mastering Embedded Linux Development

By : Frank Vasquez, Mr. Chris Simmonds
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Mastering Embedded Linux Development

Mastering Embedded Linux Development

By: Frank Vasquez, Mr. Chris Simmonds

Overview of this book

Mastering Embedded Linux Development' is designed to be both a learning resource and a reference for your embedded Linux projects. The book starts by breaking down the fundamental elements that underpin all embedded Linux projects: the toolchain, the bootloader, the kernel, and the root filesystem. First, you will download and install a pre-built toolchain. After that, you will cross-compile each of the remaining three elements from scratch and learn to automate the process using Buildroot and the Yocto Project. The book progresses with coverage of over-the-air software updates and rapid prototyping with add-on boards. Two new chapters tackle modern development practices including Python packaging and deploying containerized applications. These are followed by a chapter on writing multithreaded code and another on techniques to manage memory in an efficient way. The final chapters demonstrate how to debug your code, whether it resides in user space or in the Linux kernel itself. In addition to GDB, the book also covers the different tracers and profilers that are available for Linux so that you can quickly pinpoint any performance bottlenecks in your system. By the end of this book, you will be able to create efficient and secure embedded devices with Linux that will delight your users.
Table of Contents (28 chapters)
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1
Part 1: Elements of Embedded Linux
7
Part 2: Building Embedded Linux Images
11
Part 3: System Architecture and Design Decisions
18
Part 4: Developing Applications
23
Part 5: Debugging and Optimizing Performance

Introducing The Yocto Project

The Yocto Project is a more complex beast than Buildroot. Not only can it build toolchains, bootloaders, kernels, and root filesystems, but it can generate an entire Linux distribution for you with binary packages that can be installed at runtime. The build process is structured around groups of recipes written using a combination of Python and shell script. The Yocto Project includes a task scheduler called BitBake that produces whatever you have configured from the recipes. There is plenty of online documentation at https://www.yoctoproject.org/.

Background

The structure of The Yocto Project makes more sense if you look at the background first. Its roots are in OpenEmbedded (https://openembedded.org), which grew out of a number of projects to port Linux to various hand-held computers, including the Sharp Zaurus and the Compaq iPAQ. OpenEmbedded came to life in 2003 as the build system for those hand-held computers. Soon after, other developers...

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