From: Wolfgang Denk <wd@denx.de>
To: "Sergio Massami Sakai" <Sakai@cpqd.com.br>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: problems using LCD with FADS 823 & denx linux 2.4.4
Date: Wed, 21 Nov 2001 18:13:03 +0100 [thread overview]
Message-ID: <20011121171308.96D1B1138D@denx.denx.de> (raw)
In-Reply-To: Your message of "Wed, 21 Nov 2001 14:41:08 -0200." <A43453F31786664ABED2E468A69079EF0F88C3@MAILSRV1.aquarius.cpqd.com.br>
In message <A43453F31786664ABED2E468A69079EF0F88C3@MAILSRV1.aquarius.cpqd.com.br> you wrote:
>
> I´m trying to use a LCD with my FADS MPC823 board, using Linux kernel
> 2.4.4-2001-05-12 from denx, but I had some problems.
I recommend to upgrade to 2.4.4-2001-11-11.
> Using the kernel compiled with the LCD_8xx option enabled I had the
> following messages when I try to boot:
...
> Call backtrace:
> C003DBC4 C00310B0 C000245C 1000F4D0 100188C0 1000F83C 0FEE6E78
> 00000000
Can you please decode this backtrace and list the function names /
offsets?
> Oops: kernel access of bad area, sig: 11
> NIP: C0027CF8 XER: C000027A LR: C0027CD0 SP: C01FFDE0 REGS: c01ffd30
> TRAP: 0300MSR: 00001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11
> DAR: 3C1F1D58, DSISR: 0000012B
Which mask revision is your CPU?
> If I remove the LCD driver or turn off the LCD during the boot, the
> problem disappears.
Which display type did you configure?
> Does anyone has some idea about what is the problem and how to solve
> that?
The usual way to solve such problems is to debug the code long enough
until it's clean :-)
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
"UNIX was not designed to stop you from doing stupid things, because
that would also stop you from doing clever things." - Doug Gwyn
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2001-11-21 17:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-21 16:41 problems using LCD with FADS 823 & denx linux 2.4.4 Sergio Massami Sakai
2001-11-21 17:13 ` Wolfgang Denk [this message]
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