Книга: Embedded Linux Primer: A Practical, Real-World Approach

Practical Advice for the Practicing Embedded Developer

Practical Advice for the Practicing Embedded Developer

This book contains my view of what an embedded engineer needs to know to get up to speed fast in an embedded Linux environment. Instead of focusing on Linux kernel internals, the kernel chapter in this book focuses on the project nature of the kernel and leaves the internals to the other excellent texts on the subject. You will learn the organization and layout of the kernel source tree. You will discover the binary components that make up a kernel image, and how they are loaded and what purpose they serve on an embedded system. One of my favorite figures in the book is Figure 5-1, which schematically illustrates the build process of a composite kernel image.

In the pages of this book, you will learn how the build system works and how to incorporate into the Linux kernel your own custom changes that are required for your own projects. You will discover the mechanism used to drive the configuration of different architectures and features within the Linux kernel source tree and, more important, how to modify this system to customize it to your own requirements. We also cover in detail the kernel command-line mechanism. You will learn how it works, how to configure the kernel's runtime behavior for your requirements, and how to extend this functionality to your own project. You will learn how to navigate the kernel source code and how to configure the kernel for specific tasks related to an embedded system. You will learn many useful tips and tricks for your embedded project, from bootloaders, system initialization, file systems, and Flash memory to advanced kernel- and application-debugging techniques.

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