IoT & Hardware
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You're reading from  Embedded Systems Architecture - Second Edition

Product typeBook
Published inJan 2023
PublisherPackt
ISBN-139781803239545
Edition2nd Edition
Concepts
Embedded Systems
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Author (1)
Daniele Lacamera
Daniele Lacamera
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Daniele Lacamera

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 about Daniele Lacamera

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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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Embedded Systems Architecture - Second Edition
Published in: Jan 2023Publisher: PacktISBN-13: 9781803239545
© 2023 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Daniele Lacamera

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 about Daniele Lacamera

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