[U-Boot-Users] System hangs when Linux is loaded

[Frank Young]

Hi,

I have a Walnut board with ppc405. I have manged to install u-boot on the 
board. I can download linux image (I am using Monta Vista one) too. But when 
I tried to use "bootm", the system hanged after showing
"## Transferring control to Linux (at address 00000000) ..."

The following is the dump of serial console output. The uImage-uncomp is the 
uncompressed linux image created with tools/mkimage, as explained in README 
file. Does anyone have the same problem?

Thanks!
Frank

===================================================

=> tftp 400000 uImage-uncomp
ENET Speed is 100 Mbps - HALF duplex connection
TFTP from server 138.31.3.162; our IP address is 138.31.3.79
Filename 'uImage-uncomp'.
Load address: 0x400000
Loading: #################################################################
         #################################################################
         #################################################################
         #################################################################
         #########
done
Bytes transferred = 1377116 (15035c hex)
=> imi 400000

## Checking Image at 00400000 ...
   Image Name:   Linux 2.2.4
   Image Type:   PowerPC Linux Kernel Image (uncompressed)
   Data Size:    1377052 Bytes =  1.3 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
=> bootm 400000
## Booting image at 00400000 ...
   Image Name:   Linux 2.2.4
   Image Type:   PowerPC Linux Kernel Image (uncompressed)
   Data Size:    1377052 Bytes =  1.3 MB
   Load Address: 00000000
   Entry Point:  00000000
   Verifying Checksum ... OK
OK
## Current stack ends at 0x00FBBBA8 => set upper limit to 0x00800000
## cmdline at 0x007FFF00 ... 0x007FFF48
bd address  = 0x00FBBF90
memstart    = 0x00000000
memsize     = 0x01000000
flashstart  = 0xFF800000
flashsize   = 0x00400000
flashoffset = 0x00000000
sramstart   = 0x00000000
sramsize    = 0x00000000
bootflags   = 0x0000A000
procfreq    =    200 MHz
plb_busfreq =    100 MHz
pci_busfreq =     25 MHz
ethaddr     = 00:00:48:B9:00:51
IP addr     = 138.31.3.79
baudrate    =   9600 bps
No initrd
## Transferring control to Linux (at address 00000000) ...

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