how to make GENERIC parameters exist in system.h?

My custom IP have GENERIC parameters, I have integreted it into SOPC Builder and I can input different parameters'value when instantiation.

I hope to use the GENERIC parameters in Nios' software, so if the GENERIC parameters can be put into system.h, that will be a good solution.

Is there any way to make GENERIC parameters exist in system.h?

or is there any way to solve my question?

Thanks in advance~