mini2440 and SD card

I need 'dd' linux command for made a boot sd. I have a coplet linux system
on board mini2440 but there i not a 'dd' command.
an idea to remplacing 'dd' with an other command ?

I have always used 'dd' on the Linux host, but not on the target.

I would expect that one could enable that function in a custom version of
Busybox or coreutils.  Both of these can be enabled in the Pengutronix's
BSP.

Thank you very much to have answered me. 
I built my system with BSP Pengutronix. How to validate dd? With ptxdist?

ptxdist menuconfig -> Shell & Console Tools -> busybox -> Coreutils -> [*]
dd

But to deploy an SD card you should use some USB based SD card reader and
write all required data from your host to this card (as davef already
recommended).

I noticed the document quoted here: 

'http://www.friendlyarm.net/forum/attachment/15363 '. 

In this document, we have: mkfs.ext3-Lroot /dev/mmcblk0p2. 

In my file env/config, ext2 is used for mmcblk0p2. What do I have to do?