Disabling nRF5340 TrustedZone Protected Storage (explicitly, and during runtime)

RE: Disabling nRF5340 TrustedZone Protected Storage (explicitly, and during runtime)

Håkon Alseth — Tue, 04 Feb 2025 08:32:14 GMT

No, it is not run-time configurable.

Kind regards,

Håkon

esmart-engineering — Tue, 04 Feb 2025 00:31:46 GMT

Again, the current consumption issue is not really what I'm asking about anymore. Sorry for the confusion.

So is it impossible to dynamically configure PSA PS to be enabled/disabled?

Håkon Alseth — Mon, 03 Feb 2025 11:20:03 GMT

Hi,

As mentioned, having a unused section or filesystem present shall not increase the current consumption.

Can you please elaborate on what is the cause of your added current consumption?

You can also have a look at the "build-folder/partition.yaml" to see how your flash is setup.

[quote user=""]I just want to see how PSA PS can be disabled explicitly, and how to disable/enable it during runtime.[/quote]

It is statically configurable, as per the kconfig that you initially mentioned.

Kind regards,

Håkon

esmart-engineering — Fri, 31 Jan 2025 17:56:38 GMT

Sorry for the confusion. See my edit in the main post, but I currently am more interested in how to disable/enable PSA PS.

Håkon Alseth — Fri, 31 Jan 2025 07:57:33 GMT

Hi,

Having a filesystem should not automatically increase the current consumption, unless it is heavily used.

Can you share plots or info on how much you are consuming, and what you expect to consume?

The sample you're using has serial enabled, have you tried to disable it to see if this decreases the current?

Since this is TFM, please ensure that CONFIG_TFM_LOG_LEVEL_SILENCE=y is set as well.

Kind regards,

Håkon