Debugging TF-M application RoT service with nRF5340-DK

RE: Debugging TF-M application RoT service with nRF5340-DK

Sigurd Hellesvik — Tue, 07 Mar 2023 08:13:37 GMT

Hi Kirti.

That is possible in nRF Connect SDK v2.3.0 and onwards, using CONFIG_TFM_SECURE_UART_SHARE_INSTANCE.

Regards,
Sigurd Hellesvik

RE: Debugging TF-M application RoT service with nRF5340-DK

skirti — Mon, 06 Mar 2023 07:59:35 GMT

Hello Sigurd,

With the above mentioned two changes i.e.
1. Add the changes to boards/nrf5340dk_nrf5340_cpuapp_ns
2. Adding configs CONFIG_TFM_UART1_TXD_PIN=20 & CONFIG_TFM_UART1_RXD_PIN.

With these changes able to get the logs from secure.

Would like to know is there any way to get both secure and nonsecure logs at once?

RE: Debugging TF-M application RoT service with nRF5340-DK

ske — Tue, 24 Jan 2023 06:47:03 GMT

Hello,

We are getting the SPE prints with this configuration.

Thanks for the update.

RE: Debugging TF-M application RoT service with nRF5340-DK

Sigurd Hellesvik — Fri, 20 Jan 2023 09:59:24 GMT

Hi,

I found that you need another configuration as well:

You need to disable uart1 in the devicetree when using it from TF-M.

Also, you need to disable or change the pins of uart0 in the devicetree, so that the uarts does not compete for the pins.

Add the following to boards/nrf5340dk_nrf5340_cpuapp_ns:

&uart0 {
	/* Disabled in non-secure image. */
	status = "disabled";
};
&uart1 {
	/* Disabled in non-secure image. */
	status = "disabled";
};

Regards,
Sigurd Hellesvik

RE: Debugging TF-M application RoT service with nRF5340-DK

ske — Wed, 18 Jan 2023 12:44:22 GMT

Hello,

Sorry for the delayed response.

From tfm_spp_main() entry point API, we also getting the prints which is added before psa_wait() call. But if we add any prints after psa_wait() call, we didn't get those prints. Please refer this snippet code and SPE log.

RE: Debugging TF-M application RoT service with nRF5340-DK

Sigurd Hellesvik — Wed, 28 Dec 2022 10:16:21 GMT

Hi,

See Running applications with Trusted Firmware-M.

[quote user=""]CONFIG_TFM_UART1_TXD_PIN=20
CONFIG_TFM_UART1_RXD_PIN=22[/quote]

I added these configurations to the secure peripheral sample.
And now I can see custom prints in secure_peripheral_partition.c:

Regards,
Sigurd Hellesvik