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 (registration required) various documents highlighting:

System Workbench for STM32

syscalls.c problem in STM32F429I-Discovery STemWin SampleDemo



This is not an issue with System Workbench; regretfully, this is due to a known bug in ST CubeMX, which is used to generate the demo projects in ST Firmwares.

We have isolated the bug and ST is working on correcting it; it should be OK in the next release of CubeMX but, then, you will have to wait for a release of the firmware package. Too bad we don’t find an easy workaround...