[U-Boot-Users] debug linux kernel hangs

[Alex shi <alex.shi@tom.com>]

Hi Denk:
    I am sorry for pre  unreadable mail.
Hi All:

 My box is MPC8247
I use u-boot 1.1.1 to boot linux kernel 2.4.22, the bd_info are same in 
u-boot.h, and IMMR address also same at 0xf0000000.
but after input bootm command the linux kernel hangs:
====================================
 => setenv ipaddr 192.168.0.33
 => setenv serverip 192.168.0.222
 => tftp 0x100000 uImage
 Using FCC1 ETHERNET device
 TFTP from server 192.168.0.222; our IP address is 192.168.0.33
 Filename "uImage".
 Load address: 0x100000
 Loading: #################################################################
          #################################################################
          #####################################
 done
 Bytes transferred = 853098 (d046a hex)
 => bootm 0x100000
 ## Booting image at 00100000 ...
    Image Name:   Linux Kernel Image
    Image Type:   PowerPC Linux Kernel Image (gzip compressed)
    Data Size:    853034 Bytes = 833 kB
    Load Address: 00000000
    Entry Point:  00000000
    Verifying Checksum ... OK
    Uncompressing Kernel Image ... OK
=============================================

and under the ppc_6xx-gdb :
==========================
(gdb)
620             ppc_md.setup_arch();
(gdb) n

<<<<< long time wait and then press ctl + c.


?
Program received signal SIGSTOP, Stopped (signal).
0xc0007e4c in __delay () at time.c:427
427     }
(gdb) where
#0  0xc0007e4c in __delay () at time.c:427
#1  0xc0015ae4 in panic (fmt=0x2bbbd "\001") at delay.h:42
(gdb)
=========================
It seems kernel breaken down@ppc_md.setup_arch()
and panic a message to me, isn't it?

Any hints will be appreciated!

BRG
Alexander