[U-Boot-Users] Linux couldn't start up

[Robert]

Hi, 
    I make a linux uImage with command "make uImage" ,
 and linux kernel can start up after downloading it into the 
target board, but now I want to generate uImage by vmlinux
with mkimage, not by "make uImage",so I do it as follows:
1)arm-none-linux-gnueabi-objcopy -O binary -R .note -R .comment \
                -S /home/linux-2.6.12/vmlinux /home/temp/vmlinux.bin
2)gzip -9  /home/temp/vmlinux.bin
3)mkimage  -A arm -O linux  -T kernel -C none \
        -a 00008000 -e 00008000 \
        -n 'Linux-2.6.12.6-arm1' -d /home/temp/vmlinux.bin.gz /home/temp/uImage
At last, I load uImage to ram to run, but the following message happens:

Marvell>> tftp 0x400000 uImage
Using egiga0 device
TFTP from server 192.168.0.53; our IP address is 192.168.0.54
Filename 'uImage'.
Load address: 0x400000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #################################################################
         ##########
done
Bytes transferred = 1710086 (1a1806 hex)
Marvell>> bootm 0x400000
## Booting image at 00400000 ...
   Image Name:   Linux-2.6.12.6-arm1
   Created:      2008-02-03  17:12:54 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1710022 Bytes =  1.6 MB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
OK
 
Starting kernel ... 
undefined instruction 
pc : [<ffffffff>]          lr : [<00249274>]
sp : 001ff16c  ip : ffffffff     fp : 001ff694
r10: 00000000  r9 : 002570a8     r8 : 001fffd4
r7 : 000000ff  r6 : 0027ee58     r5 : 00000000  r4 : 0027ee58
r3 : 00008000  r2 : 00000100     r1 : 0000020e  r0 : 00000000
Flags: NZCV  IRQs off  FIQs off  Mode SYS_32
Resetting CPU ...

Can anybody tell me what happend?
Thanks in advance!

With kind regards,
Rboert
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