In https://lists.trustedfirmware.org/archives/list/tf-m@lists.trustedfirmware.o... Ken mentions the need for a special flag in the manifest to indicate a non-secure agent partition. The code change is fairly easy, I think, but the manifest file format is specified by PSA, and presumably would also need to change.
How do we go about doing that?
Thanks,
Chris Brand
Cypress Semiconductor (Canada), Inc. An Infineon Technologies Company Sr Prin Software Engr CSCA CSS ICW SW PSW 1 Office: +1 778 234 0515 Chris.Brand@infineon.commailto:Chris.Brand@infineon.com
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Hi,
NS Agent is a TF-M implementation-defined component instead of the FF-M compliant one. Hence it can have necessary customization.
TF-M needs to deal with standard FF-M components (Secure Partition) and their manifests in the FF-M defined ways, in case these Secure Partitions are ported from other implementations. But it is not expected that someone would port TF-M NS Agent to another implementation without tweaking. (It would be nice if someone can provide this compatibility 😉).
/Ken
From: Chris.Brand--- via TF-M tf-m@lists.trustedfirmware.org Sent: Thursday, July 21, 2022 3:25 AM To: tf-m@lists.trustedfirmware.org Subject: [TF-M] ns_agent flag
In https://lists.trustedfirmware.org/archives/list/tf-m@lists.trustedfirmware.o... Ken mentions the need for a special flag in the manifest to indicate a non-secure agent partition. The code change is fairly easy, I think, but the manifest file format is specified by PSA, and presumably would also need to change.
How do we go about doing that?
Thanks,
Chris Brand
Cypress Semiconductor (Canada), Inc. An Infineon Technologies Company Sr Prin Software Engr CSCA CSS ICW SW PSW 1 Office: +1 778 234 0515 Chris.Brand@infineon.commailto:Chris.Brand@infineon.com
International Place 13700 V6V 2X8 Richmond Canada
www.infineon.com<www.cypress.com> www.cypress.comhttp://www.cypress.com Discoverieshttp://www.infineon.com/discoveries Facebookhttp://www.facebook.com/infineon Twitterhttp://www.twitter.com/Infineon LinkedInhttp://www.linkedin.com/company/infineon-technologies
Part of your life. Part of tomorrow.
NOTICE: The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material of Infineon Technologies AG and its affiliated entities which is for the exclusive use of the individual designated above as the recipient. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact immediately the sender by returning e-mail and delete the material from any computer. If you are not the specified recipient, you are hereby notified that all disclosure, reproduction, distribution or action taken on the basis of this message is prohibited.
tf-m@lists.trustedfirmware.org
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Ken Liu