uboot problem about "bootm" command

Please please please help me.

I am almost crazy.

The following is the problem description.

Now, I have a DE0 board, uClinux kernel, NIOSII processor, and u-boot.

The version of uClinux kernel is uClinux-dist-20110603.

The NIOS II version is 10.1 and quartus II version is 10.1.

The u-boot version is u-boot-2011.06.

I want to download the .sof file to DE0 board and then boot kernel.

I have the three way to achieve the goal. I fail in one of them which is used the "bootm" command.

First, I don't use the u-boot to boot kernel. (OK:))

Directly download the kernel to the memory and then boot kernel.

(I use the compressed image kernel which is not .gz file but through "misc.c" )

--- Quote Start ---

[NIOS2_EDS] nios2-download -g zImage

[NIOS2_EDS] nios2-terminal

--- Quote End ---

Second, I use the u-boot's "go"command to boot kernel. (OK:))

Directly download the kernel to flash by using "flash programmer tool" of NIOS IDE. And then I copy the image kernel from flash through "cp.b" command. Finally, I key in "go" command booting kernel.(I use the uncompressed image kernel which is not through "misc.c")

--- Quote Start ---

==>cp.b 02400000 01800000 400000

==>go 01800000

--- Quote End ---

Third, I use the u-boot's "bootm" command to boot kernel. (FAIL:cry::)

(I use the compressed image kernel which is not .gz file but through "misc.c")

1. I create the uImage through the "mkimage" tool.

The following is the settings

--- Quote Start ---

mkimage -n 'linux- 2.6' -A nios2 -O linux -T kernel -C none -a 0x01800000 -e 0x01800040 -d zImage uImage_18

--- Quote End ---

--- Quote Start ---

mkimage -n 'linux- 2.6' -A nios2 -O linux -T kernel -C none -a 0x01800000 -e 0x01800000 -d zImage uImage_1D

--- Quote End ---

The following is board information

--- Quote Start ---

==> bdinfo

mem start = 0x01800000

mem size = 0x00800000

flash start = 0x82400000

flash size = 0x00400000

flash offset= 0x00000019

ethaddr = (not set)

ip_addr = 0.0.0.0

baudrate = 1 bps

--- Quote End ---

2. bootm command

A. copy uImage_18

--- Quote Start ---

==>cp.b 02400000 01800000 200000

==>bootm 01800000 -

# # Booting kernel from Legacy Image at 01800000 ...

Image Name: linux- 2.6

Image Type: NIOS II Linux Kernel Image (uncompressed)

Data Size: 1457595 Bytes = 1.4 MiB

Load Address: 01800000

Entry Point: 01800040

Verifying Checksum ... OK

XIP Kernel Image ...

OK <-----------------------------(stuck here.......)

--- Quote End ---

B. copy uImage_1D

--- Quote Start ---

==>cp.b 02400000 01D00000 200000

==>bootm 01D00000 -

# # Booting kernel from Legacy Image at 01D00000 ...

Image Name: linux- 2.6

Image Type: NIOS II Linux Kernel Image (uncompressed)

Data Size: 1457595 Bytes = 1.4 MiB

Load Address: 01800000

Entry Point: 01800000

Verifying Checksum ... OK

Loading Kernel Image ...

OK <-----------------------------(stuck here.......)

--- Quote End ---

Could you give me "any any any" suggestions. I need them.

Please please help me.

God bless you.

Thank you very much.