UART over serial on iMX93 Windows 11

krestic · ‎03-19-2025

Hello,

a Microsoft article specifies that there is a kd_8003_1fc9.dll KDNET extensibility module to debug the kernel over ethernet, see here: https://learn.microsoft.com/en-us/windows/iot/iot-enterprise/arm64/nxp_debugging?tabs=IPv4&pivots=kd...

In the past you could debug the kernel over serial using the kdcom.dll with NXP's iMX6 entry inside the Debug Port Table 2, it specifies a port 0x8000 and subtype for the iMX6 0x000C.

My question: Is it possible, for testing purposes, to use one of the reserved subtypes from 0x0016 - 0xFFFF together with the iMX93 to debug over serial hardware?

If not, is it possible to write a KDNET extensibility module with a byte interface for the iMX93? The naming conventions specify a naming convention kd_XXXX_YYYY.dll where XXXX is the DBG2 port (in my case serial) and YYYY the subtype. There is no subtype for the iMX93, is it possible to use the old one, 0x000C, or would this not be possible because Microsofts list doesnt include a serial subtype for the iMX93?

Thank you

Chavira

HI @krestic!

Thank you for contacting NXP Support!

Unfortunately that are software tools made it by Microsoft and at the moment we don't have the proper file for iMX93.

Please contact to Microsoft support.

Best Regards!

Chavira

krestic

Thank you for the quick response.

I know that there isn't a proper file at the moment, but would you know if the development of extensibility modules is still possible without a "valid" PortSubtype? There is one for NXPs iMX6 but would any work as long as the one in the name and the one inside the Dbg2 match or would it only work if Microsoft added it to their maintained list?