Hi,

Here is a short summary of what we discussed. Feel free to add your comments.

Project KPI to measure

Sizes:

1. Secure [S] Image size of the profile Small

Timings:

1. Secure service access time = turnover time of empty secure service

2. Secure interrupt latency

3. Non-secure interrupt latency in

a. the best case

b. the worst case. Difficult but can be approximated by: best case + longest interrupt blocking time on S side.

4. Booting time = the time from MCU reset to NS main() start.

All measurement shall be duplicated for IPC and SFN (aka Library) modes.

Documentation

• Local documentation is useful and shall be kept but skipping documentation generation code by default I good idea to fasten a common build case.

Flash access from NS side

• A flash shared access between S and NS is a real need. A “Flash Service” partition is interesting approach to grant NS side access to Flash device, keeping overall security on S side.

Thanks,

Anton

From: David Wang <David.Wang@arm.com>
Sent: Thursday, June 10, 2021 2:17 AM
To: tf-m@lists.trustedfirmware.org; Anton Komlev <Anton.Komlev@arm.com>
Cc: nd <nd@arm.com>
Subject: RE: Technical Forum call - June 10

Hi Anton,

If it’s open agenda, I would like to take this opportunity to get some inputs about the use scenarios and solutions for sharing flash controller (or even other HW resources) between S and NS. For example, the security/concurrency concerns/issues etc.

Thanks.

Regards,

David Wang

From: TF-M <tf-m-bounces@lists.trustedfirmware.org> On Behalf Of Anton Komlev via TF-M
Sent: Wednesday, June 9, 2021 11:03 PM
To: tf-m@lists.trustedfirmware.org
Cc: nd <nd@arm.com>
Subject: Re: [TF-M] Technical Forum call - June 10

Hi,

We have an open agenda for the forum tomorrow.

Let’s use that time to review any ongoing items and discuss open questions.

To start:

1. What kind of project measurements would be interesting for collection and ways for benchmarking.
1. Booting time
2. PSA service access time
3. … anything else ?

Regards and please bring your topic,

Anton

From: TF-M <tf-m-bounces@lists.trustedfirmware.org> On Behalf Of Anton Komlev via TF-M
Sent: Wednesday, June 2, 2021 11:26 AM
To: tf-m@lists.trustedfirmware.org
Cc: nd <nd@arm.com>
Subject: [TF-M] Technical Forum call - June 10

Hi,

The next Technical Forum is planned on Thursday, June 10, 15:00-16:00 UTC (US time zone).

Please reply on this email with your proposals for agenda topics.

Recording and slides of previous meetings are here:

https://www.trustedfirmware.org/meetings/tf-m-technical-forum/

Best regards,

Anton