Working with Yocto

Yocto is an open-source project which allows for the creation of Linux-based Board Support Packages. Its introduction to Automotive Grade Linux has brought it more attention in the Automotive sector. This training gives you a solid understanding of the build system.

You’ll be able to understand the workflow of the Yocto build system and the open source meta layers structure. We will show you how to create and maintain custom distributions and create and distribute software development kits to jumpstart developers.

In addition the course shows you how to troubleshoot build errors and make feasible fixes (which can be contributed upstream) as well as set up NTFS & TFTP boots to encourage reduced boot and deployment times. Not only this but participants will be able to work with Yocto tools such as BitBake, DevTool and understand how Linux kernel development works in a Yocto environment.

• Understand the workflow of the Yocto build system
• Learn how to add/modify/remove features from Board Support Packages

Introduction to Yocto

• Linux Foundation
• Yocto
• Opensource support
• Contributions workflow

First Build

• BSP Components
• Environment setup
• Trigger first build
• Launch Qemu

FileStructure

• MetaData outside build
• Layers Directory
• Recipe files
• Configuration files
• Class files
• MetaData inside build
• Configuration Directory
• Work Directory
• Deploy Directory
• Sysroot Directory

Adding First Layer

• Finding new layers
• Layer confiugration file
• Searching for a specific layer
• Adding an existing layer
• Yocto tools to create new layer
• Adding new layer into build system

Adding First Recipe

• Sample Recipes
• What Variables are necessary for a recipe
• First Recipe
• Building your first recipe
• Having a look at recipe artifacts

The BitBake Tool

• The global datastore
• Conditional variable assignment
• Functions and tasks

Bitbake Package Management

• Bitbake supported packages
• Creating an FTP server for packages
• Installing packages from FTP Server into Qemu
• License Management

Software Development Kit

• What is an SDK?
• Classical Software Development Ki
• Extended Software Development Kit
• Devtool
• Devtool Workflow

New BSP

• Creating a new BSP layer
• Patching existing kernel/U-boot code
• Linux-yocto compatible kernels
• Kernel machine and device tree setup
• NTFS and TFTP boot

Troubleshooting

• log files
• Generating error messages
• Automatic testing