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Embedded Systems Architecture - Second Edition

You're reading from  Embedded Systems Architecture - Second Edition

Product type Book
Published in Jan 2023
Publisher Packt
ISBN-13 9781803239545
Pages 342 pages
Edition 2nd Edition
Languages
Concepts
Author (1):
Daniele Lacamera Daniele Lacamera
Profile icon Daniele Lacamera
LinkedIn
Daniele Lacamera is a software technologist and researcher with vast experience in software design and development on embedded systems for different industries, currently working as freelance software developer and trainer. He is a worldwide expert in TCP/IP and transport protocol design and optimization, with more than 20 academic publications on the topic. He supports free software by contributing to several projects, including the Linux kernel, and his involvement within a number of communities and organizations that promote the use of free and open source software in the IoT.
See other products by Daniele Lacamera

Table of Contents (18) Chapters

Preface 1. Part 1 – Introduction to Embedded Systems Development
2. Chapter 1: Embedded Systems – A Pragmatic Approach 3. Chapter 2: Work Environment and Workflow Optimization 4. Part 2 – Core System Architecture
5. Chapter 3: Architectural Patterns 6. Chapter 4: The Boot-Up Procedure 7. Chapter 5: Memory Management 8. Part 3 – Device Drivers and Communication Interfaces
9. Chapter 6: General-Purpose Peripherals 10. Chapter 7: Local Bus Interfaces 11. Chapter 8: Power Management and Energy Saving 12. Chapter 9: Distributed Systems and IoT Architecture 13. Part 4 – Multithreading
14. Chapter 10: Parallel Tasks and Scheduling 15. Chapter 11: Trusted Execution Environment 16. Index 17. Other Books You May Enjoy

Building and running the example

Finally, we are putting all we have learned about TrustZone-M into practice, by activating the option flags needed to enable TrustZone-M and running the two software components associated with the execution domains.

Enabling TrustZone-M

By default, TrustZone-M is turned off on our microcontroller when it is in its factory state. Turning on TrustZone is a one-way operation, but it is typically not irreversible unless combined with other hardware-assisted protection mechanisms that make it impossible to disable it when the embedded system is deployed. Disabling TrustZone once enabled, however, requires a more complex procedure than just clearing one bit in a register.

Important note

Please refer to your microcontroller’s reference manual and application notes, and ensure that you understand the procedure and the consequences of enabling or attempting to disable TrustZone-M on your device.

On the reference platform, to enable TrustZone...

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Authors (1)

Profile icon Daniele Lacamera
LinkedIn
Daniele Lacamera is a software technologist and researcher with vast experience in software design and development on embedded systems for different industries, currently working as freelance software developer and trainer. He is a worldwide expert in TCP/IP and transport protocol design and optimization, with more than 20 academic publications on the topic. He supports free software by contributing to several projects, including the Linux kernel, and his involvement within a number of communities and organizations that promote the use of free and open source software in the IoT.
Read more
See other products by Daniele Lacamera

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