epcs boot problem!

[Altera_Forum]

Hi, 

  I have a problem about the EPCS boot.    I have already added the EPCS Serial Flash Controller Core and the Reset vector was the EPCS controller. Now , I can successfully download the elf and sof to the EPCS16 . When powered up ,the sof is loaded finely,but the elf doesn't work!   Can anybody encounter this issue ,please help me!  Best regards!