Applied Yocto Project using Raspberry Pi 5 (Embedded Linux)

In this lecture, we will talk about;

• System images that are required to boot an Embedded Linux system (with Raspberry Pi example)

• Brief introduction to Rootfs, Linux Kernel, Devicetree

• How Custom Software is developed?

In this lecture, we will talk about;

• How does Linux-running hardware look like? Basic hardware components explained.

• How Linux Boots? Image files explained from example system image. Linux boot procedure explained.

  • Bootloader

  • Linux Kernel

  • Userspace

In this lecture we will talk about Linux distributions and Package Managers

In this lecture, we will talk about;

• Why do we need Yocto Project? An overall perspective

• Tasks in Embedded Systems

• Yocto Project Terminology

In this lecture, we will talk about Yocto Project architecture.

In this lecture, we will prepare our Linux environment, VSCode environment, set up a Git repository, and download poky reference Linux distribution.

In this lecture, we will explore basic configuration files and variables in Yocto Project.

In this lecture, we will explore important folders and files within poky reference distribution Yocto source code. We will also explore work directories and how to find where build outputs are located when a Yocto recipe is cooked. Furthermore, how to debug certain features within Yocto are also explained.

In this lecture,

• We will talk about layers in Yocto Project

• Extend upon reference Poky Linux distribution by adding some of the core layers.

• Add raspberrypi support to poky distribution by including meta-raspberrypi layer.

In this lecture, we will;

• Create our own layer.

• Check what is contained within layers.

In this lecture,

• Raspberry Pi 5 hardware is introduced.

• Serial console setup for Raspberry Pi 5 is explained and demonstrated.

• Secure shell (SSH) setup for Raspberry Pi 5 is explained and demonstrated.

• First Raspberry Pi 5 image is booted and explained.

In this lecture, we will learn how to flash SD card and start Raspberry Pi 5 platform. We will also examine all the components that are needed to run the Raspberry Pi 5 board.

In this lecture,

• We will learn how recipes work.

• We will learn how to create a recipe that compiles basic software using GCC.

In this lecture, we will learn how to create a recipe for a software package that uses GNU Make build system. We will integrate an example software package that utilizes Makefile.

In this lecture,

• We will learn how to create a recipe for a software package that uses CMake as its build system.

• We will also learn how to use Git repositories as sources in our recipes.

• We will create recipe for some of the raspberrypi-utils tools.

In this lecture,

• We will talk about a tool called GoYocto which is able to create Yocto recipe skeletons that can be tailored and used in creating Linux distributions.

• An example will be made so that a PyPi Python3 package is integrated using a recipe.

• We will also explore how tarball archives can be used as a source in recipes.

With this lecture,

• Graphical desktop environment XFCE support will be added to Yocto Project environment

• Demonstration of the graphical desktop environment will be done.

With this lecture,

• We will add Qt6 support to our Linux distribution.

• We will create a minimal Qt6 application and create its recipe.

In this lecture,

• How Application SDK works in Yocto Project will be explained.

• A custom Application SDK will be created.

With this lecture, we will learn how to modify source files of the software packages and how to create patches from our changes using a very handy tool called DEVTOOL.

In this lecture, we will learn how machines work in Yocto Project. We will learn about how to change devicetree, devicetree overlays, U-Boot command line, compiler tuning options, and more.

In this lecture, a new machine will be created as Yocto Project configuration and all related modifications will be added in this newly added machine configuration.

In this lecture, we will learn how to modify Linux Kernel config files using Yocto Project.

In this lecture, we will talk about how to modify Linux kernel source and how to downgrade/upgrade Linux kernel version using Yocto Project.