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  • Book Overview & Buying Embedded Linux Projects Using Yocto Project Cookbook
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Embedded Linux Projects Using Yocto Project Cookbook

Embedded Linux Projects Using Yocto Project Cookbook

By : Alex Gonzalez
3.8 (8)
Buy this Book
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Embedded Linux Projects Using Yocto Project Cookbook

Embedded Linux Projects Using Yocto Project Cookbook

3.8 (8)
By: Alex Gonzalez
Buy this Book

Overview of this book

If you are an embedded developer learning about embedded Linux with some experience with the Yocto project, this book is the ideal way to become proficient and broaden your knowledge with examples that are immediately applicable to your embedded developments. Experienced embedded Yocto developers will find new insight into working methodologies and ARM specific development competence.
Table of Contents (7 chapters)
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Preface
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Preface
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Who this book is for
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What this book covers
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1
The Build System
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The Build System
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Introduction
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Setting up the host system
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Installing Poky
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Creating a build directory
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Building your first image
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Explaining the NXP Yocto ecosystem
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Installing support for NXP hardware
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Building Wandboard images
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Using the Toaster web interface
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Running a Toaster Docker container
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Configuring network booting for a development setup
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Using Docker as a Yocto build system container
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Sharing downloads
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Sharing the shared state cache
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Setting up a package feed
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Using build history
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Working with build statistics
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Debugging the build system
2
The BSP Layer
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The BSP Layer
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Introduction
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Creating a custom BSP layer
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Adding a custom kernel and bootloader
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Building the U-Boot bootloader
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Describing Linux's build system
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Configuring the Linux kernel
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Building the Linux kernel
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Building external kernel modules
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Debugging the Linux kernel and modules
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Debugging the Linux kernel booting process
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Using the kernel function tracing system
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Managing the device tree
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Debugging device tree issues
3
The Software Layer
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The Software Layer
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Introduction
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Exploring an image's contents
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Adding a new software layer
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Selecting a specific package version and provider
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Adding supported packages
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Adding new packages
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Adding data, scripts, or configuration files
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Managing users and groups
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Using the sysvinit initialization manager
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Using the systemd initialization manager
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Installing package installation scripts
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Reducing the Linux kernel image size
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Reducing the root filesystem size
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Memory-based root filesystems
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Securing the root filesystem
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Releasing software
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Analyzing your system for compliance
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Working with open source and proprietary code
4
Application Development
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Application Development
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Introduction
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Introducing toolchains
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Preparing an SDK
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Using the extensible SDK
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Using the Eclipse IDE
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Developing GTK+ applications
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Using the Qt Creator IDE
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Developing Qt applications
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Describing workflows for application development
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Working with GNU make
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Working with the GNU build system
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Working with the CMake build system
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Working with the SCons builder
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Developing with libraries
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Working with the Linux framebuffer
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Using the X Windows system
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Using Wayland
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Adding a web browser application
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Adding Python applications
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Integrating the Open Java Development Kit
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Integrating Java applications
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Integrating Node.js applications
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Running Docker application containers
5
Debugging, Tracing, and Profiling
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Debugging, Tracing, and Profiling
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Introduction
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Analyzing core dumps
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Native GDB debugging
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Cross GDB debugging
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Using strace for application debugging
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Using the kernel's performance counters
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Using static kernel tracing
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Using dynamic kernel tracing
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Using dynamic kernel events
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Exploring Yocto's tracing and profiling tools
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Tracing and profiling with perf
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Using SystemTap
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Using LTTng
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Using blktrace
6
Other Books You May Enjoy
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Other Books You May Enjoy
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Leave a review - let other readers know what you think

Analyzing core dumps

Even after extensive quality assurance testing, embedded systems in-field also fail and need to be debugged. Moreover, often the failure is not something that can be easily reproduced in a laboratory environment, so we are left with production, often hardened system, to debug.

Assuming we have designed our system with the aforementioned scenario in mind, our first debugging choice is usually to extract as much information about the failing system—for example, by obtaining and analyzing a core dump of the misbehaving processes.

Getting ready

In the process of debugging embedded Linux systems, we can use the same toolbox as standard Linux systems. One of the tools enables applications to generate into the disk a memory core dump upon crashing. This assumes that we have enough disk space to store the application's entire memory map, and that writing to disk is quick enough that it will not drag the system to a halt.

Once the memory core dump is generated, we use the host's...

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Embedded Linux Projects Using Yocto Project Cookbook
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