Own component with SOPC component

Hello!

I develop my own code and integrated it into a SOPC system. It works fine.

Howver, I had to add some SOPC components (in fact one Avalon-ST Multiplexer and one Avalon-ST Channel Adapter) so as to have my own block worked properly.

Is it a way to add SOPC component (one Avalon-ST Multiplexer and one Avalon-ST Channel Adapter in my case) in its own code so as to have a general component (in VHDL as a component instantiation)?

Main issues are parameters that are used to configure Avalon components. These ones are gathered in .SOPC file...

Thanks.