Hi, Vinay!
You might want to turn on kernel debugging and also the
early printk support.
You also might want to come over to the linuxppc-embedded
and linuxppc-dev mailinglists at ozlabs.org where those question
are pretty well known. Tell us more about your board/system,
check the archives!
Greets,
Clemens Koller
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Fax: +49-89-741518-19
vinay hegde wrote:
Hi All,
I am working on bringing up a PowerPC based board
with Linux 2.6 kernel (Board supoort package).
However, I am facing some problem with respect to
debugging.
When I boot the board with the Linux kernel (BSP),
the board hangs after printing the following
information.
Network Loading from: /dev/enet0
Client IP Address = 192.168.4.38
Server IP Address = 192.168.4.101
Gateway IP Address = 192.168.4.253
Subnet IP Address Mask = 255.255.255.0
Boot File Name = developer.kdi
Load Address = 04000000
Buffer Size = 2000000
Network Boot File Load Start - Press <ESC> to
Bypass, <SPC> to Continue
Bytes Received =&6141952, Bytes Loaded =&6141952
Bytes/Second =&511829, Elapsed Time =12 Second(s)
Boot Device =/dev/enet0
Boot File =developer.kdi
Load Address =04000000
Load Size =005DB800
Execution Address =04000020
Execution Offset =00000020
Passing control to the loaded file/image.
loaded at: 00800000 00DD8800
zimage at: 008058E0 009933BB
initrd at: 00998000 00DD8800
avail ram: 00400000 00800000
Linux/PPC load: console=ttyS0,9600 console=tty0
root=/dev/sda2
console=ttyS0,9600 root=/dev/ram rw
Uncompressing Linux...done.
Now booting the kernel
.
I am going through the source code to figure out the
problem, but unable to find out what is going wrong
here.
Does anybody have any idea about the problem? Also,
is it possible to print some debug messages at this
point of booting? {Note that, in the early stage of
booting process the serial is initialized and all
the above mentioned messages (like Uncomressing
Linux, Now booting the kernel etc) are printed. And
immediately after printing the "now booting the
kernel message,the serial is closed. This code is in
uncompress_kernel() function in
arch/ppc/boot/simple/misc.c file).
Can somebody help me with the above problem?
Thank you,
vinay hegde.
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