Linux Kernel Driver Development

Name: Linux Kernel Driver Development
Rating: 3.8 (108 reviews)

Learn basics of Linux Kernel architecture, the role of device driver. Develop linux device driver development skills

Created bySandesh Ashok

Last updated 3/2020

English

What you'll learn

Introduction to Linux Kernel Driver development, Basics understanding of Linux kernel, Code Compilation Techniques, Automating build steps using Makefile, Writing basic Linux drivers and submitting your first kernel patch.

Course content

7 sections • 21 lectures • 2h 40m total length

Download Virtual Box and Ubuntu1:30
Install ubuntu on Virtual Box5:29

Code Compilation Steps9:49
High level language like C program are converted to machine readable code using a tool called compiler. In this lecture, we shall look in depth into intermediate steps used by compiler to convert the c program to binary.
Cross Compilation5:13
Regular compilation of file creates a binary for the architecture on which code is compiled.
If binary for a different architecture is required, we need to perform Cross Compilation.

module_init and module_exit11:29
Students will learn to create the entry and exit function along with the macros for adding the module description and module license.
Building the kernel module5:35
Create the Makefile for building the helloworld module created in the previous lecture.
Understanding insmod, lsmod and rmmod5:11
Insert the kernel module from userspace, list the modules and remove the modules. At the same time, observe the behavior during each step.
Understanding printk, log levels in kernel15:30
printk is used to print the messages in the console from kernelspace. However, printk has certain loglevels associated with it. Proper understanding of how printk works helps debugging in the constraint cases.
Runtime status of the module and kallsysms8:56
After inserting the module, understand how kernel exposes the module details to the userspace. Interact with the files, know more about each entries.
Understanding __init and __exit keyword7:07
__init keryword is the most often used for module initializing. Understanding the behavior of __init keyword helps in writing efficient optimized code.

Character driver nodes and basics7:36
Understand how character drivers are identified, create a character driver node. Know basics of Major Number and Minor Number.
Register and unregister the character driver6:04
Know how to register a character driver and deregister a character driver
File operations on our character driver7:07
Know how file operations are declared in the driver. File operations are key part of driver development as everything in linux is managed through files.
Implement Open, Read, Close function for fops12:21
Implement how file operations like open, close and read are performed as regular file operations on kernel driver.
Implement Write operation0:03

Requirements

Basic understanding of C program, Enthusiasm to learn new stuff

Description

Starting your journey in the Linux device driver development is a pain for beginners. This course is designed to clear the air and provide the right insights for beginners to get started in device driver development.

Before jumping right away into development it is better to know the basics and need of device drivers. So, the course begins with an introduction to Linux kernel architecture, the role of device drivers.

Course Structure Includes:

Introduction to Linux Kernel architecture.
Role of device drivers and their use case.
Intermediate steps involved in the compilation process.
Cross Compilation for the target architecture.
Kernel APIs understanding for getting started.
Implement a Hello World module.
Module Building, inserting, and checking status procedure.
__init and __exit keywords and their use case.
Character driver implementation.
Implementing read, write operations for the character driver.
Creating and submitting our first Linux kernel patch.

This course, if well practiced well enough along with supported theory and lecture, is good enough for any beginner to get started in device drivers development.

As time proceeds, I will be updating the course contents with the additional drivers and techniques for debugging the drivers.

Hope you will enjoy and have fun learning.

Cheers.

Who this course is for:

Beginners who want to get started in the Linux kernel development, driver design, workflow in kernel driver development

Linux Kernel Driver Development

What you'll learn

Explore related topics

Course content

Installing Linux on Virtual Box2 lectures • 7min

Introduction to Linux Kernel2 lectures • 11min

Code Compilation Techniques2 lectures • 15min

Makefile Creation3 lectures • 21min

Hello World Kernel Module6 lectures • 54min

Character Driver Module5 lectures • 33min

First Kernel Patch1 lecture • 20min

Requirements

Description

Who this course is for: