This instructor-led course will give you the step-by-step framework for developing an embedded Linux product. Starting with the cross-compiler, you’ll learn about setting up a development system, boot loaders, the kernel, drivers, device tree, and all the various software and decisions that need to be made when building a user space root filesystem, such as those in use in consumer electronics, military, medical, industrial, and auto industries. Hands-on labs with a RISC-V based emulated development target allow students to practice both coding and building the various parts of the system covered in class.
INSTRUCTOR-LED COURSE
Embedded Linux Development (LFD450)
Who Is It For
This course is for experienced developers who need to develop an embedded Linux product from the ground up.
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What You’ll Learn
In this course you will learn about the Linux kernel architecture, emphasizing the essential points relevant to adapting the kernel to a custom embedded platform. The course also covers techniques for right-sizing systems to meet project constraints, the multitude of resources available for constructing a cross development environment for embedded projects, the options available for populating libraries and application user-spaces to meet the goals and constraints of embedded systems, and more.
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What It Prepares You For
The course will prepare you to use the tools and techniques necessary for developing embedded Linux devices.
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Introduction
- Who You Are
- The Linux Foundation
- Copyright and No Confidential Information
- Linux Foundation Training
- Certification Programs and Digital Badging
- Linux Distributions
- Platforms
- Preparing Your System
- Things change in Linux
- Documentation and Links
Preliminaries
- Virtual Machine Installation
- Procedures
- Labs
How to Work in OSS Projects **
- Know Where the Code is Coming From: DCO and CLA
- 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
Embedded and Real-Time Systems Concepts
- Protection Motivations
- Off the Shelf (OTS)
- Embedded Caveats
- Real Time Operating Systems
- Real Time Linux
- Custom Hardware Assistance
- Resources
Cross-Development Environments: Goals and Needs
- Why is it Hard?
- Project Goal Considerations
- Links to Additional Discussions
- Labs
Kbuild System
- Kbuild Makefiles
- Kconfig Basics
- Searching Kconfig
Cross-Development Toolchain
- Built-in Linux Distribution Cross Compiler
- Linaro
- CodeSourcery
- crosstool-ng
- Buildroot
- OpenEmbedded
- Yocto Project
- Clang
- Labs
QEMU
- Why use QEMU?
- Emulated Architectures
- Image Formats
- Labs
Booting a Target Development Board from uSD
- Getting SW onto a uSD card
- Booting from flash
- Why is using uSD cards a bad idea?
- Labs
Booting a Target Development Board over Ethernet
- An easier way to develop
- The Boot Sequence using TFTP and NFSroot
- Objectives of the Lab
- Labs
Boot loaders and U-Boot
- Some GPL BIOSes
- Some GPL Boot Loaders
- Das U-Boot
- U-Boot Command Line
- U-Boot Environment
- Labs
Kernel Configuration, Compilation, Booting
- Labs
Device Drivers**
- Device Nodes
- Character Drivers
- An Example
- Labs
Device Trees
- What Device Trees Do and What They Do Not Do
- Device Tree Syntax
- Device Tree Walk Through
- Device Tree Bindings
- Device Tree support in Boot Loaders
- Using Device Tree Data in Drivers
- Coexistence and Conversion of Old Drivers
- Labs
Target Filesystem Packaging
- Directories: a Survey
- Embedded Filesystem Types
Build Target Root Filesystem
- Labs
Root Filesystem Choices
- udev vs. BusyBox mdev
- Systemd
- C Library Choices
- Labs
Configuring uClibc
- Labs
Another Alternate C-library: musl **
- Configuring BuildRoot for musl
- Labs
Build BusyBox Utility Suite
- Integrated with Buildroot
- Labs
Kernel Monitoring and Debugging
- Ftrace, Trace-Cmd, Kernelshark
- Perf
- Using perf
- sysctl
- SysRq Key
- oops Messages
- Kernel Debuggers
- debugfs
Right-Sizing
- Taking Inventory of Kernel Sizes
Memory Technology Devices (Flash Memory Filesystems)
- NAND vs. NOR vs. eMMC
- Driver and User Modules
- Flash Filesystems
Compressed Filesystems
- Deploying in an MTD Partition
- Labs
System Upgrades
- Update strategies
- Prebuilt upgrade systems
- Labs
Real-Time Extensions
- PREEMPT RT Project
- Real-Time Checklist
Closing and Evaluation Survey
Kernel Architecture Preview
- Monolithic and Micro Kernels
- Main Kernel Tasks
- User-Space and Kernel-Space
Kernel Source Tree Overview
- Kernel Browsers
- Kernel Configuration Files
- Why is it Hard? Part 2
Kernel Programming Preview
- kernel-doc
- Using Generic Kernel Routines and Methods
- Error Numbers, Printing Kernel Output, syslogd
- Task Structure
- Memory Allocation
- Transferring Data between User and Kernel Space
Modules
- A Trivial Example
- Compiling Modules
- Modules vs Built-in
- Module Utilities
- Automatic Module Loading
- Module Usage Count
- Module Licensing
- Exporting Symbols
- Resolving Symbols **
- Labs
Basic Target Development Board Setup
- Labs
Booting the Target Development Board from uSD
- Labs
Booting a Target Development Board over Ethernet
- The Boot Sequence using TFTP and NFSroot
- Objectives of the Lab
- Labs
Prerequisites
Feb 2023
I enjoyed the class.
Feb 2023
I learned about device trees.
Feb 2023
Tom was very patient and helpful if we encountered problems while doing the exercise, and took care that no one was left behind.
Feb 2023
The instructor is experienced and a great source of knowledge.
Feb 2023
The wide range of topics covered.
Feb 2023
Just a general thanks, it's been a refreshing experience that I haven't had in a while, where I've really enjoyed a course, and was able to learn a lot.
Feb 2023
The DEEP knowledge dives. I have closed a lot of gaps in my knowledge.
Feb 2023
I liked the background/history that gave more context to some of the Linux utilities. I also liked building our own modules.
Feb 2023
The content covered a vast array of topics, and was extremely applicable to the teams work. There couldn’t be a more worthwhile course.
Feb 2023
The incredible wealth of knowledge, and general attitude of the instructor. This topic is something that could easily be butchered and made boring, but Behan did a great job making sure that didn't happen.
Feb 2023
It covered a lot of the topics I wondered about, whilst working with embedded Linux devices.
Feb 2023
The in-depth knowledge that was shared by the instructor. I thoroughly enjoyed the historical information that he provided.
Feb 2023
The expertise and status (in the Linux community) of the presenter.
$3250
May, 15 - 18, 2023
9:00 am - 5:00 pm Europe/London
VIRTUAL, Instructor-Led
Jun, 12 - 15, 2023
9:00 am - 5:00 pm US/Central
Virtual, Instructor-Led
Aug, 7 - 10, 2023
9:00 am - 5:00 pm Europe/London
VIRTUAL, Instructor-Led
Dates don't work? Check out our partner schedule
Live (Classroom)
4 days of Instructor-led class time
Hands-on Labs & Assignments
Resources & Course Manual
Certificate of Completion
Digital Badge
