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

Nucleo board can't program or debug after upgrade.

Since it is not possible to uninstall openocd or to select for use a previous installed version from System Workbench, I had to copy the previous version’s binaries from the folder:

C:\Program Files\Ac6\SystemWorkbench\plugins\fr.ac6.mcu.externaltools.openocd.win32_1.17.0.201801120948\tools\openocd\bin

and overwrite the latest, not working binaries in:

C:\Program Files\Ac6\SystemWorkbench\plugins\fr.ac6.mcu.externaltools.openocd.win32_1.18.0.201807130628\tools\openocd\bin

Now everything works again.