SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world.
And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download two short videos (registration required) highlighting:

System Workbench for STM32

Connect to custom board STM32L053 - STLINK-V2 - SWD

Hi Sylvain,

Can you verify that no debug session has been already launched. Go to the Debug perspectie (Windows > Open Perspective > Debug (or Other... > Debug)) then terminate every opened sessions.

Can you also check in the task manager if an openocd.exe is still runnning in background ? If it is, kill the openocd process.

Then relaunch the debug. If the same error is displayed, please copy the openocd process output (on the Debug perspective, select the openocd process under your debug session, the output should be displayed on the console view).