STM32CubeU5 TFM Application (UM2581) on U575

Gencay · ‎2023-04-23

Hello,

Can we run STM32CubeU5 TFM Application (UM2581) on U575 since it has not crypto hw like U585?

Thank you in advance!

Best Regards!

Bubbles · ‎2023-04-24

Hi @Gencay,

yes, crypto library will also work. TF-M needs the TrustZone isolation hardware, cryptography software implementation is a compromise that is acceptable.

BR,

J

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Bubbles · ‎2023-04-24

Hi @Gencay,

yes, crypto library will also work. TF-M needs the TrustZone isolation hardware, cryptography software implementation is a compromise that is acceptable.

BR,

J

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Gencay · ‎2023-04-24

Hello @JHOUD Thank you for your answer.

May I also ask which one does ST suggests? TF-M or X-CUBE-SBSFU?

Thank you in advance!

Best Regards.

Bubbles · ‎2023-04-24

Hi, I believe X-CUBE-SBSFU package is not really a TFM. But in STM32cubeU5 package there are TFM and SBSFU applications - both for U585, so you need to replace the cryptography with library, but both are basically TF-M. Pick whichever you like more. The one called SBSFU is trying to ease transition from non-TZ SBSFU, like for former STM32L4 users, while the other is cleaner TF-M, but the difference is mostly in the application, not in the loader or boot part.

BR,

J

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