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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

Building on top of an existing BSP

A BSP layer adds support for a particular hardware device or family of devices to Yocto. This support usually includes the bootloader, device tree blobs, and additional kernel drivers needed to boot Linux on that specific hardware. A BSP may also include any additional user-space software and peripheral firmware needed to fully enable and utilize all the features of the hardware. By convention, BSP layer names start with the meta- prefix followed by the machine’s name. Locating the best BSP for your target device is the first step toward building a bootable image for it using Yocto.

The OpenEmbedded layer index (https://layers.openembedded.org/layerindex) is the best place to start looking for quality BSPs. Your board’s manufacturer or silicon vendor may also offer BSP layers. The Yocto Project provides a BSP for all variants of Raspberry Pi. You can find the Git repository for that BSP layer and all the other layers endorsed by...

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