mmc rescan
fatload mmc 0 82000000 MLO


nandecc hw
nand erase 0 80000
nand write 82000000 0 20000
nand write 82000000 20000 20000
nand write 82000000 40000 20000
nand write 82000000 60000 20000
fatload mmc 0 0x80200000 u-boot.bin
//fatload mmc 0:1 0x80000000 uimage

nandecc sw
nand erase 80000 160000
nand write 0x80200000 80000 160000

boot
--------------------------------------------------
mmc rescan
fatload mmc 0:1 0x80000000 uimage
saveenv
boot

Finally below commands worked for me:
setenv bootargs 'console=ttyO2,115200n8 root=/dev/mmcblk0p2 rw rootwait'
setenv bootcmd 'mmc rescan;fatload mmc 0 80300000 uImage;bootm 80300000'
svaeenv