SHA 256 opencores code

Hi

http://opencores.org/websvn,filedetails?repname=nfhc&path=%2fnfhc%2ftrunk%2fsha256%2fsha256.vhdl

When i compile this code in quartus II 10.1 ( device cyclone II EP2C35F672C6 ) i'm getting a warning saying that "k" is not assigned any value.

k is the constant used in hash computation and there are 64 k values stored in romk entity.

could someone tell me what is happening ?

thanks