Harinisas,
First of all you have not mentioned the FPGA/Device/Family that you are using, so please specify. Every FPGA has set of user guides that you can read and use to know how to configure their FPGAs. Go through following link if you are using spartan-6 from Xilinx:
https://www.xilinx.com/support/documentation/user_guides/ug380.pdf
Here you will find the answer, actually configuration pins are normally not coded, you need to connect them on PCB board itself.
Thanks,
Fpgadsgnr