cfi flash programming

In cyclone iii cfi 256mb flash numonyx p33256tfe 16 bit cfi flashh

i am converting .sof file to .flash file and reading the data in file and receiving that data from uart and writing it into the flash from addresss ox20000 to 0x2814e7 which is in output file .map

but its not running on power up.

any addition boot programm is required to add while loading through uart .

please reply anyone