EP440XS board boot problem(Note:similart to Sequoia)

Wolfgang Denk wd at denx.de
Thu Dec 3 07:09:42 EST 2009

Dear Allan Wang,

In message <880531.39933.qm at web52905.mail.re2.yahoo.com> you wrote:
> Thank you for your help. My answer to your questions are between the lines.
>  Attached is the dts file I use.

No, there is no attachment.

> Which exact version of U-Boot are you running on this board?
> => version
> U-Boot 1.1.6 (Oct 25 2009 - 13:26:41)

Um... why don't you update? This is really historic stuff...

> What is your exact boot command?
> I tftp the cuImage to address 0x200000 and bootm to boot.
> Which boot arguments do you pass to the kernel?
> bootargs=$(bootargs) console=ttyS0,$(baudrate)

Please provide complete answers, and not only the snippets that seem
important to you. For example, what is the "$(bootargs)" above?

Maybe you provide a full boot log right from reset/power on, including
the output of the "printenv" command on your system.

> The u-boot sets it to 115.2k. the dts file is set to 115.2k. Here is the bo
> ot parameter:
> baudrate=115200

Arghhh.. Please provide the actual output fdrom your system, not just
some parts you copy.

> What does your device tree look like?
> I attached my dts file.

No, it's missing.

> > 2. It pakics when mounting the root file system(NFS):
> > (gdb) bt
> > #0 panic (fmt=0xc0290e94 "VFS: Unable to mount root fs on %s")
> So what is the "%s" argument here? Which sort of root file system are
> you trying to mount - NFS, ramdisk, UBIFS, ... ?
> I try to use NFS for the root file system.

Then you can also run a packet sniffer (like wireshark) to see if any
NFS requests actually get sent to the targte, resp. where it stops).

Best regards,

Wolfgang Denk

DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Romulan women are not like Vulcan females. We are  not  dedicated  to
pure logic and the sterility of non-emotion.
	-- Romulan Commander, "The Enterprise Incident",
	   stardate 5027.3

More information about the Linuxppc-dev mailing list