RE: Can one run a custom c-application in the Arm TrustZone (especially using VSCode)?

gdl — Mon, 10 Jun 2024 07:39:19 GMT

Many thanks for the explaination

RE: Can one run a custom c-application in the Arm TrustZone (especially using VSCode)?

Einar Thorsrud — Thu, 06 Jun 2024 12:17:03 GMT

Hi,

There is nothing from a hardware perspective that dictates that you must use TF-M. You can in theory also run another secure image, like we did early on in the SDK before introducing TF-M. However, TF-M is the only thing we support now, ant it is heavily integrated in the SDK. So I would strongly advice that you stick with TF-M.

That said, you can expand TF-M yourself. Both with pure software servicds, and services that integrade with specific hardware. This is demonstrated by the TF-M secure peripheral partition sample.

The VS code extension supports multi image builds and also debugging multi image builds. You can experiment with this using SDK examples to see how it works, but in generall it is quite seemless and behaves as you would expect.