uboot/board/samsung/common/dfu_sample_env.txt
<<
>>
Prefs
   1mmcboot=setenv bootargs root=/dev/mmcblk${mmcdev}p${mmcrootpart} ${rootfstype} rootwait ${console}; run loaduimage; bootm 0x40007FC0
   2rootfstype=ext4
   3loaduimage=ext4load mmc ${mmcdev}:${mmcbootpart} 0x40007FC0 uImage
   4mmcdev=0
   5mmcbootpart=2
   6mmcrootpart=5
   7console=console=ttySAC2,115200n8
   8bootcmd=run mmcboot
   9dfu_alt_info=u-boot mmc 80 800;params.bin mmc 0x38 0x8;uImage ext4 0 2
  10