NAND flash booting problem

After successful pre-loader booting,we tried for bare metal application from NAND.

As per our expectation,pre-loader has jump to bare-metal application.

Our bare metal application is not running after successful run of pre-loader.

The following procedure is ,please correct me if any thing is doing wrong.

1) Conversion of baremetal .axf to .bin(by using arm-altera-eabi-objcopy.... etc command)

2) Conversion of baremetal .bin to .img (by using mkimage tool)

3) Conversion of .img to .bin (by changing the file extention)

4) Finally .bin file is writing into NAND from 0xc0000 address.

With the above, pre-loader is running properly and bare metal code is not running.

Please suggest where we are doing the mistake.