Error while porting AT91SAM9263-EK

Hi,
I am using a AT91SAM9263-EK .The board was already ported with bootloader,kernel and filesystem.I am new to porting embedded boards and wanted to port my own kernel and filesystem into its nand flash but I got stuck as below .Steps that followed :

Step 1 :Configured tftpsever in host.Created /tftpboot directory,copied uImage,ramdisk.gz into it.

Step 2 :Set the environment variables as follows

bootdelay=3 baudrate=115200 ethact=macb0 ethaddr=12:34:56:78:90:22 bootcmd=run nf_kernel;run boot ramdisk=run nf_kernel;run tftp_ramdisk;run ramdisk_evset; run boot tftp_ramdisk=tftp 21100000 ramdisk.gz boot=bootm 22200000 filesize=176FDC fileaddr=22200000 ipaddr=192.168.1.56 serverip=192.168.2.239 nf_kernel=nand read 22200000 2100000 200000 bootargs mem=64M console=ttyS0 115200 root=/dev/mtdblock1 rw rootfstype=jffs2 ramdisk_evset=setenv bootargs mem=64M console=ttyS0 115200 root=/dev/ram0 initrd=0x211000000,0x600000

Step 3 :Transferred uImage via TFTP

U-Boot> tftp 22200000 uImage

< Trying to write uImage to nand >

U-Boot> nand erase

[QUOTE]NAND erase: device 0 whole chip

Skipping bad block at 0x02000000

Erasing at 0x3ffc000 -- 100% complete.

OK[/QUOTE
<Its showing a bad sector at location 2000000.>

U-Boot> nand write 22200000 2100000 200000

NAND write: device 0 offset 0x2100000, size 0x200000 2097152 bytes written: OK

Step 4 : When I give command to run ramdisk to boot the board with ramdisk filesystem,

u-boot> run ramdisk

its showing loading ramdisk.gz from tftp success and will start uncompressing linux

## Booting kernel from Legacy Image at 22200000 ... Image Name: Linux 2.6.20 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 1535900 Bytes = 1.5 MB Load Address: 20008000 Entry Point: 20008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ..

.

But finally its showing error,

“No filesystem could mount root, tried: ext2 vfat romfs Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) ''

I think the problem is filesystem have been corrupted.

My plan was to load my filesystem as follows:
After booting the board with ramdisk ,connect the USB device (that contain 9263-mtblock1.jffs2 and 9263-mtblock2.jffs2 filesystem images), mount it and write it to nand as follows

$ nandwrite -p /dev/mtd1 /mnt/nfs/9263-mtblock1.jffs2

Similarly
$ nandwrite -p /dev/mtd2 /mnt/nfs/9263-mtblock2.jffs2


But since I am stuck in booting the board with ramdisk,I cannot port my filesystem.
Can anyone help me how to proceed..

“No filesystem could mount root, tried: ext2 vfat romfs Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) ''

It seems that your kernel does not support jffs2. Did you compile that filesystem into your kernel?