[U-Boot] Kernel hangs...

[Michael Schmid <MSchmid@gmx.ch>]

Hi!

I have the following system:
- Board: Artila M-501 with Atmel AT91RM9200
- 16MB Flash
- 64MB SDRAM
- U-Boot 1.1.2
- Linux: 2.6

I am new to those bootloader and embedded linux things, so I messed up the configuration of u-boot... Then I recovered the Board with new loader, environment and new kernel and ramdisk -> I used the official "recovery package" of Artila (I know that it wouldn't have been necessary to do all the things, but I wasn't sure if the bootloader was the only problem...)

So now it starts but after a while it hangs after the following message:
--- Start ---
Starting M501.............
Starting kernel ...

Uncompressing
Linux...............................................................................................
done, booting the kernel.
--- End ---

I have the following conf. in U-Boot:
--- Start ---
Artila> printenv
baudrate=115200
ethaddr=00:13:48:00:77:b5
rootpath=/opt/arm
lel=1
initrd=0x20800000,8192000 ramdisk_size=15360 root=/dev/ram0 rw
loader=tftp 21000000 m501_64M.alf
mtdparts=phys_mapped_flash:128k(loader)ro,128k(reserved)ro,1408k(linux)ro,2560(r
amdisk)ro,-(userdisk)
filesize=3A3
gateway=192.168.1.1
netmask=255.255.255.0
bootcmd=bootm 10040000 101a0000
kernel=tftp 21000000 M501K;erase 10040000 1019ffff;cp.b 21000000 10040000 $(file
size)
skernel=loadb 21000000;erase 10040000 1019ffff;cp.b 21000000 10040000 $(filesize
)
ramdisk=tftp 21000000 M501R;erase 101a0000 1041ffff;cp.b 21000000 101a0000 $(fil
esize)
sramdisk=loadb 21000000;erase 101a0000 1041ffff;cp.b 21000000 101a0000 $(filesiz
e)
serverip=192.168.2.150
ipaddr=192.168.2.196
bootdelay=1
bargs=setenv bootargs mem=64M console=$(console),115200 initrd=0x20800000,819200
0 ramdisk_size=15360 root=/dev/ram0 rw mtdparts=phys_mapped_flash:128k(loader)ro
,128k(env)ro,1408k(linux)ro,2560k(ramdisk)ro,-(userdisk)
bootargs=mem=64M console=NULL,115200 initrd=0x20800000,8192000 ramdisk_size=1536
0 root=/dev/ram0 rw mtdparts=phys_mapped_flash:128k(loader)ro,128k(reserved)ro,1
408k(linux)ro,2560k(ramdisk)ro,-(userdisk)
console=ttyS0
stdin=serial
stdout=serial
stderr=serial
--- End ---

bdinfo gives the following output:
--- Start ---
Artila> bdinfo
arch_number = 0x00000537
env_t       = 0x00000000
boot_params = 0x20000100
DRAM bank   = 0x00000000
-> start    = 0x20000000
-> size     = 0x02000000
ethaddr     = 00:13:48:00:77:B5
ip_addr     = 192.168.2.196
baudrate    = 115200 bps
flash size  = 16 MB
--- End ---

What could be the problem? How can I find out where the problem is?
--> Is it possible that the kernel hangs because of a hardware-bug?

Thanks for every hint!
Michael
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