Matlab Simulink Cortex-m3?!?

Question

MATLAB

Hello! There is such a question, it is necessary to release a simple control system in simulink. The core of the system will be Cortex m-3. I read that the simulink can be connected directly to the board with the MC and debugged on it, but this option is not entirely appropriate, since it is necessary to build a layout of the control system and emit information flows, timers, delays, throughput channels and so on in it. Is there a ready-made implementation of MK Cortex in simulink or is it done in some other way? Thank you!