No remoteproc trace log on STM32MP257F

[m_g]

I am working through the MPU Wiki guide Develop on the Cortex-M33 for STM32MP257F

I am running the FlashLayout_sdcard_stm32mp257f-dk-ca35tdcid-ostl-m33-examples-optee.tsv image.

I can successfully load and debug binaries for the M33 and the virtual UART behaves as expected. However, after adding the __LOG_TRACE_IO_ macro, any attempt to read from /sys/kernel/debug/remoteproc/remoteproc0/trace0 returns: Trace not available

From minicom, I can see that the log messages are correctly sent to /dev/ttyACM1

I've observed the same behaviour for both the DK and EV kits.

Having the log output to the remoteproc trace would be very useful during development. Any advice on getting this working would be great!

Thanks in advance.

 

 

[Olivier GALLIEN]

Hi @m_g ,

This is issue is known and register as  ticket 209782 in our system. 

We will keep you posted as soon as we have fix. 

Olivier