[U-Boot] onenand write fail with on smdkc100

Hi All,

das-u-boot $make smdc100_config das-u-boot $make

Brought u-boot prompt on minicom using Trace32

SMDKC100 # tftp c0008000 uboot.bin

SMDKC100 # onenand erase 0 40000

SMDKC100 # onenand write c0008000 0 214c0 OneNAND write: device 0 offset 0, size 214c0 addr c0008000... 0 bytes written: ERROR

SMDKC100 # onenand write c0008000 0 40000

OneNAND write: device 0 offset 0, size 40000 addr c0008000...

What could be the problem, Am i missing anything ?