From: Eugene Surovegin <ebs@ebshome.net>
To: Oliver King-Smith <oliver.king-smith@nuvation.com>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Problem trying to address custom hardware
Date: Tue, 24 Aug 2004 22:56:33 -0700 [thread overview]
Message-ID: <20040825055633.GA28450@gate.ebshome.net> (raw)
In-Reply-To: <FC3C0DD86B79DF4FA423AF0379A547610155436D@mailguy2.nuvation.com>
On Tue, Aug 24, 2004 at 04:10:15PM -0700, Oliver King-Smith wrote:
[snip]
> pCPLD->register1 = 1; // !!! CRASH !!!
> ...
>
> And I get a crash again. The value for pCPLD is in the 0xC3xxxxxx range.
> <1> init_module in cpld_module.c on line 22
> <4>CPLD located at virtual address c3019000 and held at c3017390
> <4>Data machine check in kernel mode.
> <4>Oops: machine check, sig: 7
> <4>NIP: C0014990 XER: 00000000 LR: C3017120 SP: C19ADDE0 REGS: c19add30
> TRAP: 0200 Tainted: P
> <4>MSR: 00009030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
> <4>TASK = c19ac000[80] 'insmod' Last syscall: 128
> <4>last math 00000000 last altivec 00000000
> <4>PLB0: bear= 0x40000000 acr= 0x00000000 besr= 0x00c00000
> <4>PLB0 to OPB: bear= 0x00000000 besr0= 0x00000000 besr1= 0x00000000
> <4>
> <4>GPR00: 01000000 C19ADDE0 C19AC000 C301724C 00000000 00000001
> 00000020 C01F0000
> <4>GPR08: 000035BF C3019000 00000000 C19ADDEC 80042082 1003A0CC
> 00000000 00000000
> <4>GPR16: 00000000 00000001 00000000 00000000 00009032 019ADF40
> C19ADEA8 C1C25D00
> <4>GPR24: 0000000B C19ADF0C 1003BA38 C3010000 C3010000 C19ADDE8
> C3010000 C3010000
> <4>Call backtrace:
> <4>C0014AF0 C3017120 C0015D78 C000475C 1003BA38 10003A34 10004F2C
> <4>10008CA8 10008EC8 0FECAC30 00000000
>
> If anyone could tell me what I am doing wrong, I would greatly
> appreciate it.
>
Did you setup External Bus Controller registers (EBC0_BnCR and
EBC0_BnAP, where n is equal to the chip select line connected to PLD)?
I suspect you didn't that's why you got Machine Check error.
In fact, take a look at PLB0 registers from the crash log above:
PLB0_BEAR contains phys addr of the invalid access - 0x4000'0000,
PLB0_BESR contains error status - 0x00c0'0000, which means "master 2
(DCU) PLB timeout".
Please read "Chapter 16" in 405EP user manual for more info about
External Bus controller.
--
Eugene
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-08-25 5:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-24 23:10 Problem trying to address custom hardware Oliver King-Smith
2004-08-25 5:56 ` Eugene Surovegin [this message]
2004-08-25 17:40 ` Matt Porter
-- strict thread matches above, loose matches on Subject: below --
2004-08-25 7:50 Rupesh S
2004-08-25 22:29 Oliver King-Smith
2004-08-25 23:05 ` Matt Porter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040825055633.GA28450@gate.ebshome.net \
--to=ebs@ebshome.net \
--cc=linuxppc-embedded@lists.linuxppc.org \
--cc=oliver.king-smith@nuvation.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.