if ffsInf.InfFileName.replace('$(WORKSPACE)', '').find('$') == -1:
            #check for file path
            ErrorCode, ErrorInfo = PathClass(NormPath(ffsInf.InfFileName), GenFdsGlobalVariable.WorkSpaceDir).Validate()
            if ErrorCode != 0:
                EdkLogger.error("GenFds", ErrorCode, ExtraData=ErrorInfo)