System Boot Error

Dear all,
        I am porting Android in mini2440. I Have successfully obtained
zImage. I am trying to boot system from NAND. Using dnw2 i have
1. Formated NAND (x)
2. Download vivi (v)
3. Download Linux kernel (k) - zImage
4. Download root_yaffs (y)

While booting the system follwing kernel panic occurs,

Copy linux kernel from 0x00060000 to 0x30008000, size = 0x00200000 ... done
zImage magic = 0x016f2818
Setup linux parameters at 0x30000100
linux command line is: "noinitrd root=/dev/mtdblock2 init=/linuxrc
console=ttySAC0"
MACH_TYPE = 1999
NOW, Booting Linux......
Uncompressing
Linux...........................................................................
....................................................
done, booting the kernel.
Linux version 2.6.29-rc3-gbd87a7a-dirty (root@prem-laptop) (gcc version
4.4.1 (Sourcery G++ Lite 2009q3-67) ) #1 PREEMPT Sun Jul 25 18:29:02 IST
2010
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: Friendly-ARM MINI2440 Development Board
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, (c) 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
Kernel command line: noinitrd root=/dev/mtdblock2 init=/linuxrc
console=ttySAC0
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x30
console [ttySAC0] enabled
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60840KB available (3688K code, 235K data, 108K init)
SLUB: Genslabs=12, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Calibrating delay loop... 201.93 BogoMIPS (lpj=504832)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 520 bytes
NET: Registered protocol family 16
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c4808000, irq 33
DMA channel 1 at c4808040, irq 34
DMA channel 2 at c4808080, irq 35
DMA channel 3 at c48080c0, irq 36
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
SCSI subsystem initialized
cfg80211: Using static regulatory domain info
cfg80211: Regulatory domain: US
\0x09(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
\0x09(2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2700 mBm)
\0x09(5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
\0x09(5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
\0x09(5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
\0x09(5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
\0x09(5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 3000 mBm)
cfg80211: Calling CRDA for country: US
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NET: Registered protocol family 1
NetWinder Floating Point Emulator V0.97 (double precision)
ashmem: initialized
NTFS driver 2.1.29 [Flags: R/W DEBUG].
yaffs Jul 25 2010 18:26:35 Installing. 
msgmni has been set to 118
alg: No test for stdrng (krng)
io scheduler noop registered (default)
Console: switching to colour frame buffer device 30x20
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: s3c2410_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: s3c2410_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: s3c2410_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
loop: module loaded
nbd: registered device at major 43
dm9000 Ethernet Driver, V1.31
eth0 (dm9000): not using net_device_ops yet
eth0: dm9000e at c480c300,c4810304 IRQ 51 MAC: 08:90:90:90:90:90 (platform
data)
Linux video capture interface: v2.00
Driver 'sd' needs updating - please use bus_type methods
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand s3c2440-nand: Tacls=1, 9ns Twrph0=4 39ns, Twrph1=2 19ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V
8-bit)
Bad block table not found for chip 0
Bad block table not found for chip 0
Scanning device for bad blocks
Bad eraseblock 333 at 0x0000029a0000
Bad eraseblock 505 at 0x000003f20000
cmdlinepart partition parsing not available
mice: PS/2 mouse device common for all mice
s3c2440-ts s3c2440-ts: Starting
s3c2440-ts s3c2440-ts: Successfully loaded
input: s3c2410 TouchScreen as /class/input/input0
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c2410-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
s3c2440-sdi s3c2440-sdi: host detect has no irq available
mapped channel 0 to 0
s3c2440-sdi s3c2440-sdi: powered down.
s3c2440-sdi s3c2440-sdi: initialisation done.
s3c2440-sdi s3c2440-sdi: running at 0kHz (requested: 0kHz).
s3c2440-sdi s3c2440-sdi: running at 198kHz (requested: 197kHz).
s3c2440-sdi s3c2440-sdi: running at 198kHz (requested: 197kHz).
s3c2440-sdi s3c2440-sdi: running at 198kHz (requested: 197kHz).
TCP cubic registered
NET: Registered protocol family 17
s3c2440-sdi s3c2440-sdi: powered down.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
s3c2410-rtc s3c2410-rtc: setting system clock to 2010-07-27 05:57:42 UTC
(1280210262)
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "mtdblock2" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available
partitions:
1f00          131072 mtdblock0 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(2,0)

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The bootloader must take the initial ram space from NAND FLASH...Instead
the root is set to mtdblocks which will is used to boot from SD Card.. I
know this error but, I dont know how to set root manually to boot from
NAND.. Guide me please...