WADDR, WE, and DATAIN for SYSC_RAM module

I try my best to answer your question. Probably is good if you could let us know what is your purpose of doing this?

If I understand correctly, you want to have continuous read of your ROM data, whatever address you put on the addr, the corresponding ROM data will be available on the q output of the ROM.

So you just need to have a always block on the addr counter, then the corresponding data will be available every clock cycle.