Embedded Linux Platform Development with Yocto Project (LFD460)

In this Yocto training course students will learn how to use the Poky and Bitbake build process, with its recipes and layers to customize Linux kernel and packages for a custom embedded application, how to build Linux on an embedded board, how to use emulators for verification, how to create board support packages (BSP) for target hardware, and more. This course prepares students to take advantage of the Yocto Project – the open source collaboration effort that provides templates, tools and methods to help students create and maintain custom Linux-based systems for embedded products regardless of the specific hardware architecture.
 

This course is primarily intended for experienced embedded Linux engineers who are interested in learning how to repeatably build an embedded Linux system. This course assumes you have basic knowledge of Embedded Linux systems such as building and install boot loaders, kernels and user space software. You should also be familiar with building code from the command line, basic Linux utilities and text editors. Some experience with Python is helpful but not required.
 

This course is primarily intended for experienced embedded Linux engineers who are interested in learning how to repeatably build an embedded Linux system. This course assumes you have basic knowledge of Embedded Linux systems such as building and install boot loaders, kernels and user space software (the kinds of things you learn in LFD450: Embedded Linux Development). You should also be familiar with building code from the command line, basic Linux utilities and text editors. Some experience with Python is helpful but not required.
 

Introduction

• Objectives
• Goals
• Audience
• Who You Are
• The Linux Foundation
• Linux Foundation Training
• Certification Programs and Digital Badging
• Linux Distributions
• Platforms
• Preparing Your System
• Things change in Linux
• Documentation and Links
• Course Registration

Preliminaries

• Linux Distributions
• Procedures
• Labs

How to Work in OSS Projects **

• Overview on How to Contribute Properly
• Stay Close to Mainline for Security and Quality
• Study and Understand the Project DNA
• Figure Out What Itch You Want to Scratch
• Identify Maintainers and Their Work Flows and Methods
• Get Early Input and Work in the Open
• Contribute Incremental Bits, Not Large Code Dumps
• Leave Your Ego at the Door: Don’t Be Thin-Skinned
• Be Patient, Develop Long Term Relationships, Be Helpful

The Yocto Project and OpenEmbedded

• What is the Yocto Project?
• What is OpenEmbedded?
• The Yocto Project Family
• Yocto Project Terms
• Resources

Poky

• Pronouncing Poky
• Poky and BitBake Concepts
• Yocto/OE Architecture

Bitbake

• Obtaining and Installing
• Metadata
• Metadata Layers
• Metadata Syntax
• Events
• Variants
• File Downloads
• Fetchers
• Built-in Default Metadata
• Checksums
• Event Implementation
• Tasks
• Project Layout
• Provisioning and Dependency Handling
• BitBake Command Line
• Labs

Setting up the Yocto Project Build System

• The Yocto Project Reference System Structure
• A. Poky Core Components
• B. OpenEmbedded-Core Metadata Layer
• C. Poky Metadata Layer
• D. Yocto Board Support Package (BSP) Layer
• Labs

Building an x86 Emulation Image

• Build Environment Structure
• Labs

Troubleshooting Build Failures

• When Things Break
• Task Logs
• Running Specific Tasks
• Debug Statements
• Dependency Graphs
• Displaying Variables and Metadata
• Bitbake Debug Output
• Developer Shell

Customizing Images

• Extending a Pre-defined Image
• Inheriting from Core-Image
• Package Groups
• Using Image Features
• Labs

Toaster

• What is Toaster?
• Dependencies and Set Up of Toaster
• Running Toaster (local)
• Remote or hosted Setup
• Labs

Adding Packages

• Recipe Conventions and Best Practices
• Single C-File Package
• Makefile-based Package
• Autotooled Package
• Labs

Layers

• Why Layers?
• Working with Layers
• Labs

Kernel Recipes

• Yocto Kernel Recipes
• Configuring the Yocto Project Kernel
• Building a Custom Kernel
• Extending the Yocto Project Kernel
• Labs

Introduction to selected BBCLASSes

• rm_work.bbclass
• allarch.bbclass
• buildhistory and buildstats
• cve-check.bbclass
• archiver.bbclass

Development Tools

• devtool
• wic

Licensing and Compliance

• License Management with Yocto
• License Tracking
• Enabling Commercially Licensed Recipes
• Labs

Closing and Evaluation Survey

• Evaluation Survey