jffs2 rootfs mount error

[Saravanan Chanemouganandam]

Hi all,

What does the following error mean while mouting the jffs2 root file system 
image flashed on the MTD nand device ?

JFFS: Trying to mount a non-mtd device.
Kernel panic - not syncing: VFS: Unable to mount root fs on 
unknown-block(254,0)

Thanks
Sara