Craneboard boot.scr issues

Having problems loading boot.scr from SD card. We have partitioned the
SD card as follows:

Disk /dev/mmcblk0: 122560 cylinders, 4 heads, 16 sectors/track
Warning: The partition table looks like it was made
  for C/H/S=*/255/63 (instead of 122560/4/16).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting
from 0

   Device Boot Start End #cyls #blocks Id System
/dev/mmcblk0p1 * 0+ 49 50- 401593+ c W95 FAT32
(LBA)
/dev/mmcblk0p2 50 487 438 3518235 83 Linux
/dev/mmcblk0p3 0 - 0 0 0 Empty
/dev/mmcblk0p4 0 - 0 0 0 Empty

We have applied the following to the boot card

cp MLO /media/BOOT
cp u-boot.bin /media/BOOT
cp uImage /media/BOOT

tar xf 20110314.rootfs.tar -C /media/rootfs/

The boot screen for the Craneboard is then:

Texas Instruments X-Loader 1.46 (Nov 29 2010 - 23:10:41)
Starting OS Bootloader...

U-Boot 2009.11-00005-ge83d2db (Dec 07 2010 - 11:55:34)

OMAP34xx/35xx-GP ES1.0, CPU-OPP2 L3-165MHz
Craneboard + LPDDR/NAND
I2C: ready
DRAM: 256 MB
NAND: 256 MiB
In: serial
Out: serial
Err: serial
Die ID #4856000100000000015a7e470a01e010
Net: davinci_emac_initialize
No ETH PHY detected!!!
EMAC LSB = 0x00043688
EMAC MSB = 0x00647bd4

Having problems loading boot.scr from SD card. We have partitioned the
SD card as follows:

We have applied the following to the boot card

cp MLO /media/BOOT
cp u-boot.bin /media/BOOT
cp uImage /media/BOOT

tar xf 20110314.rootfs.tar -C /media/rootfs/

So you don't copy over a boot.scr, which explains:

Where would I be able to find boot.scr and where do I put it?

Where would I find the boot.scr file, and where do I put it. Thank you