Re: problems using LCD with FADS 823 & denx linux 2.4.4

In message [ref] 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

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