ptxdist menuconfig barebox
Board specific settings         ---> 
	DDR-RAM (Micron 64MB)

vi configs/phyCARD-S-2011.07.0/barebox-defaultenv/config
line 51:
bootargs="mem=62M console=ttymxc0,115200 video=imxfb:$display"

Rebuilt barebox
 	ptxdist clean barebox
	ptxdist targetinstall barebox

ptxdist platformconfig
image creation options          --->
	Generate images/root.jffs2      --->  
		(0x4000) Erase Block Size 
Rebuilt root filesytem
	ptxdist images