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Embedded Linux Projects Using Yocto Project Cookbook
Alex Gonzalez
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eBook - ePub
Embedded Linux Projects Using Yocto Project Cookbook
Alex Gonzalez
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Table of Contents
Embedded Linux Projects Using Yocto Project Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
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Free Access for Packt account holders
Preface
What this book covers
What you need for this book
Who this book is for
Sections
Getting ready
How to do it…
How it works…
There's more…
See also
Conventions
Reader feedback
Customer support
Downloading the example code
Errata
Piracy
Questions
1. The Build System
Introduction
Setting up the host system
Getting ready
How to do it...
How it works...
There's more...
See also
Installing Poky
Getting ready
How to do it...
How it works...
There's more...
See also
Creating a build directory
How to do it...
How it works...
There's more...
Building your first image
Getting ready
How to do it...
How it works...
There's more...
Explaining the Freescale Yocto ecosystem
Getting ready
How to do it...
How it works...
There's more...
See also
Installing support for Freescale hardware
Getting ready
How to do it...
How it works...
There's more...
See also
Building Wandboard images
How to do it...
How it works...
See also
Troubleshooting your Wandboard's first boot
Getting ready
How to do it...
There's more...
Configuring network booting for a development setup
Getting ready
Installing a TFTP server
Installing an NFS server
How to do it...
Sharing downloads
Getting ready
How to do it...
Sharing the shared state cache
How to do it...
There's more...
Setting up a package feed
Getting ready
Versioning packages
How to do it...
See also
Using build history
How to do it...
How it works...
Looking at the build history
There's more...
Working with build statistics
How to do it...
How it works...
There's more...
Debugging the build system
Getting ready
Finding recipes
Dumping BitBake's environment
Using the development shell
How to do it...
Task log and run files
Adding logging to recipes
Looking at dependencies
Debugging BitBake
Error reporting tool
There's more...
2. The BSP Layer
Introduction
Creating a custom BSP layer
How to do it...
How it works...
There's more...
Adding a new machine
Adding a custom device tree to the Linux kernel
Adding a custom U-Boot machine
Adding a custom formfactor file
Introducing system development workflows
How to do it...
How it works...
External development
Working directory development
External source development
Adding a custom kernel and bootloader
Getting Ready
Finding the Linux kernel source
Finding the U-Boot source
Developing using a Git repository fork
How to do it...
How it works...
Building the U-Boot bootloader
How to do it...
How it works...
External development
How it works…
External source development
Working directory development
Explaining Yocto's Linux kernel support
How to do it...
How it works...
See also
Describing Linux's build system
How to do it...
How it works...
There's more...
Configuring the Linux kernel
Getting ready
How to do it...
There's more...
Using configuration fragments
Building the Linux kernel
How to do it...
How it works...
External development
External source development
Working directory development
Building external kernel modules
Getting ready
How to do it...
There's more...
Debugging the Linux kernel and modules
How to do it...
How it works...
There's more...
Using dynamic debug
Rate-limiting debug messages
See also
Debugging the Linux kernel booting process
How to do it...
How it works...
Dumping the kernel's printk buffer from the bootloader
There's more...
Using the kernel function tracing system
Getting ready...
How to do it...
How it works...
There's more...
Filtering function traces
Enabling trace options
Using the function tracer on oops
Getting a stack trace for a given function
Configuring the function tracer at boot
See also
Managing the device tree
Getting ready
How to do it...
How it works...
The compatible property
The Wandboard device tree file
Defining buses and memory-addressable devices
There's more...
Modifying and compiling the device tree in Yocto
See also
Debugging device tree issues
How to do it...
How it works...
Looking at the device tree from U-Boot
Looking at the device tree from the Linux kernel
3. The Software Layer
Introduction
Exploring an image's contents
Getting ready
How to do it...
How it works...
Adding a new software layer
Getting ready
How to do it...
How it works...
There's more...
Selecting a specific package version and providers
How to do it...
How do we select which provider to use?
How do we select which version to use?
How do we select which version...