i tried to setup nfsroot command on my target board(MCF5475) but i got this problem
U-Boot 1.3.3 (Mar 2 2012 - 13:54:30)
CPU: Freescale MCF5485
CPU CLK 200 Mhz BUS CLK 100 Mhz
Board: Freescale FireEngine 5475 EVB
I2C: ready
DRAM: 64 MB
FLASH: 8 MB
In: serial
Out: serial
Err: serial
Net: FEC0, FEC1
Hit any key to stop autoboot: 0
## Booting kernel from Legacy Image at ff850000 ...
Image Name: Linux Kernel Image
Image Type: M68K Linux Kernel Image (uncompressed)
Data Size: 2285568 Bytes = 2.2 MB
Load Address: 00020000
Entry Point: 00020000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Linux version 2.6.25 (address@hidden) (gcc version 4.2.3 (Sourcery G++ Lite 4.2-125)) #20 Wed Mar 7 16:28:05 IST 2012
starting up linux startmem 0x288000, endmem 0x4000000, size 61MB
console [ttyS0] enabled
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 8156
Kernel command line: root=/dev/nfs rw nfsaddrs=192.168.0.1:/tftpboot/ltib ip=192.168.0.254:192.168.0.1:192.168.0.1:255.255.255.0::eth
0:off mtdparts=physmap-flash.0:2560k(kernel)ro,5376k(root)
PID hash table entries: 256 (order: 8, 1024 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 8192 (order: 2, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 1, 16384 bytes)
Memory: 62544k/62544k available (1704k kernel code, 1208k data, 72k init)
SLUB: Genslabs=13, HWalign=16, Order=0-2, MinObjects=8, CPUs=1, Nodes=1
Mount-cache hash table entries: 1024
net_namespace: 152 bytes
NET: Registered protocol family 16
MCF5485x INIT_DEVICES
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 0, 8192 bytes)
TCP established hash table entries: 2048 (order: 1, 16384 bytes)
TCP bind hash table entries: 2048 (order: 0, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
m547x_8x DMA: Initialize Multi-channel DMA API v1.0
JFFS2 version 2.2. (NAND) �© 2001-2006 Red Hat, Inc.
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
IPCPLD1 Driver Registered with MAJOR no = 249
IPCPLD2 Driver Registered with MAJOR no = 250
IPGPIO Driver Registered with MAJOR no = 246
RTS driver registered with MAJOR no = 248
LINK STAT Driver Registered with MAJOR no = 245
ColdFire internal UART serial driver version 1.00
ttyS0 at 0xf0008600 (irq = 99) is a builtin ColdFire UART
ttyS1 at 0xf0008700 (irq = 98) is a builtin ColdFire UART
ttyS2 at 0xf0008800 (irq = 97) is a builtin ColdFire UART
ttyS3 at 0xf0008900 (irq = 96) is a builtin ColdFire UART
brd: module loaded
loop: module loaded
FEC ENET (DMA) Version 0.20
eth0: ethernet 00:60:72:00:00:01
eth1: ethernet 00:60:72:00:00:02
physmap platform flash device: 007fffff at ff800000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank
NOR chip too large to fit in mapping. Attempting to cope...
Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
Reducing visibility of 8192KiB chip to 8191KiB
2 cmdlinepart partitions found on MTD device physmap-flash.0
Creating 2 MTD partitions on "physmap-flash.0":
0x00000000-0x00280000 : "kernel"
0x00280000-0x007c0000 : "root"
mice: PS/2 mouse device common for all mice
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 15
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
IP-Config: Complete:
device=eth0, addr=192.168.0.254, mask=255.255.255.0, gw=192.168.0.1,
host=192.168.0.254, domain=, nis-domain=(none),
bootserver=192.168.0.1, rootserver=192.168.0.1, rootpath=
Looking up port of RPC 100003/2 on 192.168.0.1
*** LINE 1111 *** FORMAT=4
Current process id is 0
BAD KERNEL TRAP: 00000000
PC: [<00156058>] dev_hard_start_xmit+0x0/0x260<0>
SR: 2000 SP: 0024de50 a2: 00228410
d0: 00000000 d1: 00000000 d2: 00000000 d3: ffff8c8d
d4: 00156058 d5: 0002b89a a0: 00156058 a1: 03052d8c
Process swapper (pid: 0, stackpage=0022a410)
Stack from 0024de50:
<0> 00000000<0> 00000000<0> ffff8c8d<0> 00156058<0> 0002b89a<0> 00156058<0> 03052d8c<0> 00228410
<0> 00000000<0> ffffffff<0> 00000000<0> 0024df8c<0> 00000002<0> 402c2000<0> 00156058<0> 001636ce
<0> 03110f00<0> 03061800<0> 00000000<0> c0a80001(0xc0a80001)<0> 00000004<0> 00273338<0> 00273538<0> 00273738
<0> 03061800<0> 03110f00<0> 03096fc0<0> 03061800<0> 00158d56<0> 03061800<0> 03022200<0> c0a800fe(0xc0a800fe)
<0> 03096fc4<0> 0018dbd6<0> 03110f00<0> 00000806<0> c0a80001(0xc0a80001)<0> 03061800<0> c0a800fe(0xc0a800fe)<0> 00000000
<0> 0306192a<0> 00000000<0> ffff8cf1<0> 00000000<0> 0024df6c<0> 03022248<0> 03110e60<0> 03022200
Call Trace:
<0> [<0003307c>]<0> [<0015e41a>]<0> [<0015e2e0>]<0> [<00033306>]
<0> [<0002fd12>]<0> [<00022504>]<0> [<001c55a0>]<0> [<0002fd68>]
<0> [<0002b89a>]<0> [<00023adc>]<0> [<0002b89a>]<0> [<0002160c>]
<0> [<0002161c>]<0> [<000214fa>]<0> [<0002b89a>]
Kernel panic - not syncing: Aiee, killing interrupt handler!
can any one give solution for this problem...................................