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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

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__SOFTFP__ defined even if hard floating-point ABI is selected

Posted by reDrives on 2017-07-15 00:03

Hello

while trying to enable FPU support for a STM32F732, I have noticed that also the SOFTFP define is set (probably by the GCC compiler) when hard floating-point ABI is selected in the MCU settings. Only VFP_FP should be defined in this case.

This creates problems with CMSIS in core_cm7.h since a check for the presence of conflicting defines is performed:

#if defined (VFP_FP) && !defined(SOFTFP)
#if (__FPU_PRESENT == 1U)
#define __FPU_USED 1U
#else
#error “Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)”
#define __FPU_USED 0U
#endif
#else
#define __FPU_USED 0U
#endif

The result is that FPU_USED is set to zero and the coprocessor units are not enabled in SystemInit.

Rgds,

Alberto

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