TMS570LS1227: EMIF bus controlling

Tool/software:

Hi i am working on TMS570LS1227 micro controller in this only 2 UART ports are avilable but i required 2 more UART ports  for this xilinx FPGA is on my custom pcb board and connnections is done between microcontroller and FPGA as follows EMIF Asyncronus pins with 8 bit Address pins and 8 pins data pins connected to FPGA.

in this scenario how can i able to add extra 2 UART's to the Microcontroller?

with regards 

D. Srikanth