From mboxrd@z Thu Jan 1 00:00:00 1970 To: "Sergio Massami Sakai" Cc: linuxppc-embedded@lists.linuxppc.org Subject: Re: problems using LCD with FADS 823 & denx linux 2.4.4 From: Wolfgang Denk Mime-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 In-reply-to: Your message of "Wed, 21 Nov 2001 14:41:08 -0200." Date: Wed, 21 Nov 2001 18:13:03 +0100 Message-Id: <20011121171308.96D1B1138D@denx.denx.de> Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: In message 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/