Book Image

Embedded Systems Architecture - Second Edition

By : Daniele Lacamera
5 (1)
Book Image

Embedded Systems Architecture - Second Edition

5 (1)
By: Daniele Lacamera

Overview of this book

Embedded Systems Architecture begins with a bird’s-eye view of embedded development and how it differs from the other systems that you may be familiar with. This book will help you get the hang of the internal working of various components in real-world systems. You’ll start by setting up a development environment and then move on to the core system architectural concepts, exploring system designs, boot-up mechanisms, and memory management. As you progress through the topics, you’ll explore the programming interface and device drivers to establish communication via TCP/IP and take measures to increase the security of IoT solutions. Finally, you’ll be introduced to multithreaded operating systems through the development of a scheduler and the use of hardware-assisted trusted execution mechanisms. With the help of this book, you will gain the confidence to work with embedded systems at an architectural level and become familiar with various aspects of embedded software development on microcontrollers—such as memory management, multithreading, and RTOS—an approach oriented to memory isolation.
Table of Contents (18 chapters)
Part 1 – Introduction to Embedded Systems Development
Part 2 – Core System Architecture
Part 3 – Device Drivers and Communication Interfaces
Part 4 – Multithreading

Building and running the boot code

The example provided here is one of the simplest executable images that can be run on the target. To assemble, compile, and link everything together, we can use a simple makefile that automates all the steps and allows us to focus on our software life cycle.

When the image is ready, we can transfer it to the real target or alternatively, run it using an emulator.

The makefile

A very basic makefile to build our startup application describes the final target (image.bin) and the intermediate steps required to build it. Makefile syntax is, in general, very vast, and covering all the functions provided by Make is outside the scope of this book. However, the few concepts explained here should be sufficient to get up and running on automating the build process.

Defining the targets for our makefile, in this case, is quite simple. The startup.c source file, containing the IV, some exception handlers, and the main and the global variables we used...