How to select epcq device for arria-v fpga

I Need to know how i can select EPCQ device for AS4 mode for Arria-V FPGA 5AGXBB7D4F40I5 selected for my design. I did not complete my design but want to finalised my PCB with this fpga. Which file should i consider for selecting flash size is it .rbf or .pof. Please reply to me neelesh_tayade@rediffmail.com. Thanks