New to VHDL

[Electronscape32]

the code here im trying to use this, but i have no idea where to start i've added the single file to project file. but i have a different TOP file.

when using component, non of the physical pins are registered and doesnt synthesise

TOP_MAIN.vhdl SDRAM.vhdl SDRAMPLL.vhdl

how would i go about this?? thanks