PROCESSOR-SDK-AM437X: USB boot issue

Part Number: PROCESSOR-SDK-AM437X

Hi All,

I am trying to boot the board from usb(USB 1)interface on AM437X board.But it's unable to boot from USB [ No boot logs found].
We tried the following cases:

USB storage has been detected in u-boot.

=> usb start
starting USB...
USB0:   Register 2000440 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus 0 for devices... 2 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) .

USB (pendrive) flashing steps followed - Bootstrapping options has been set to USB [10101b] as per reference  manual

1. Used this script (create-sdcard.sh) to create partitions( boot, rootfs) 
2. Copied u-boot.img , MLO files to boot partition.
3. Tried booting the board using the above image. But boot got failed.

Note:

Partitions created by script

1.) BOOT - FAT32
2.) ROOTFS - EXT2

Please help us the way to resolve the issue ASAP.