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Preface

1.Introduction

Definitions

Real Life and Embedded Linux Systems

Design and Implementation Methodology

2.Basic Concepts

Types of Hosts

Types of Host/Target Development Setups

Types of Host/Target Debug Setups

Generic Architecture of an Embedded Linux System

System Startup

Types of Boot Configurations

System Memory Layout

3.Hardware Support

Processor Architectures

Buses and Interfaces

I/O

Storage

General-Purpose Networking

Industrial-Grade Networking

System Monitoring

4.Development Tools

A Practical Project Workspace

GNU Cross-Platform Development Toolchain

C Library Alternatives

Java

Perl

Python

Other Programming Languages

Eclipse: An Integrated Development Environment

Terminal Emulators

5.Kernel Considerations

Selecting a Kernel

Configuring the Kernel

Compiling the Kernel

Installing the Kernel

In the Field

6.Root Filesystem Content

Basic Root Filesystem Structure

Libraries

Kernel Modules

Kernel Images

Device Files

Main System Applications

Custom Applications

System Initialization

7.Storage Device Manipulation

MTD-Supported Devices

Disk Devices

To Swap or Not To Swap

8.Root Filesystem Setup

Filesystem Types for Embedded Devices

Writing a Filesystem Image to Flash Using an NFS-Mounted Root Filesystem

Placing a Disk Filesystem on a RAM Disk

Rootfs and Initramfs

Choosing a Filesystem's Type and Layout

Handling Software Upgrades

9.Setting Up the Bootloader

Embedded Bootloaders

Server Setup for Network Boot

Using the U-Boot Bootloader

10.Setting Up Networking Services

Network Settings

Busybox

Dynamic Configuration Through DHCP

The Internet Super-Server

Remote Administration with SNMP

Network Login Through Telnet

Secure Communication with SSH

Serving Web Content Through HTTP

Provisioning

11.Debugging Tools

Eclipse

Debugging Applications with gdb

Tracing

Performance Analysis

Memory Debugging

A Word on Hardware Tools

12.Introduction to Real-Time tinux

What Is Real-Time Processing?

Should Your Linux Be Real-Time?

Common Real-Time Kernel Requirements

Some Typical Users of Real-Time Computing Technology

The Linux Paths to Real-Time

13.TheXenomai ReaI-TimeSystem

Porting Traditional RTOS Applications to Linux

The Xenomai Architecture

How Xenomai Works

The Real-Time Driver Model

Xenomai, Chameleon by Design

14.The RT Patch

Interrupts As Threads

Priority Inheritance

Configuring the Kernel with the RT Patch

High-Resolution Timers

The Latency Tracer

Conclusion

Index