From: Rodolfo Giometti <giometti@linux.it>
To: Freddy Spierenburg <freddy@dusktilldawn.nl>
Cc: linux-mips@linux-mips.org
Subject: Re: trouble on serial console for au1100
Date: Fri, 28 Apr 2006 20:27:15 +0200 [thread overview]
Message-ID: <20060428182715.GE12157@enneenne.com> (raw)
In-Reply-To: <20060428111933.GY11097@dusktilldawn.nl>
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On Fri, Apr 28, 2006 at 01:19:33PM +0200, Freddy Spierenburg wrote:
>
> Can it be that you face the same problem I was facing not so long
> ago? After I applied the patch in the email I attach to this one
> all my serial troubles on the au1100 disappeared.
>
> At the moment I'm running kernel 2.6.16 and am using a serial
> console and several other serial applications without any
> problem.
Yes, this patch fix the problem but it does it only on branch
«linux-2.6.16-stable», «master» branch is still buggy!
The problem on master branch is that the console is not initializated
at boot and also the «8250_early.c» must be modified in order to
support au1x00 serial register... I did it (the patch is at
http://ftp.enneenne.com/pub/misc/au1100-patches/linux/patch-8250_early.c)
but after that I found more problems if VT support is enabled, and
even if I disable it the last error was:
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 61080k/65536k available (2168k kernel code, 4400k reserved, 387k data, 124k init, 0k highmem)
kmem_cache_create: Early error in slab size-32
Break instruction in kernel code[#1]:
Cpu 0
$ 0 : 00000000 1000fc00 00000032 80356228
$ 4 : 80356228 80350000 80356240 00000000
...
epc : 8017837c kmem_cache_create+0x74/0x600 Not tainted
ra : 8017837c kmem_cache_create+0x74/0x600
Status: 1000fc03 KERNEL EXL IE
Cause : 00800024
PrId : 02030204
Modules linked in:
Process swapper (pid: 0, threadinfo=80352000, task=80354000)
Stack : 81062ca0 80321e44 8032bf60 00042000 0000044c 00003165 0000007c 00000183
0021e21c 803b0000 00040000 8035849c 80358490 8035855c 8039bdb0 80360000
...
Call Trace:
[<803915fc>] kmem_cache_init+0x194/0x51c
[<80387078>] mem_init+0x1f4/0x218
[<8038703c>] mem_init+0x1b8/0x218
[<803807dc>] start_kernel+0x1d4/0x3b4
[<80380134>] unknown_bootoption+0x0/0x304
Code: 24a51e44 0c04a8e0 02e03021 <0200000d> 3c058036 0c0c6ebe 24a48550 3c03803b 8c70a35c
Kernel panic - not syncing: Aiee, killing interrupt handler!
so, I'll continue my work on «linux-2.6.16-stable» branch. :)
Ciao,
Rodolfo
--
GNU/Linux Solutions e-mail: giometti@enneenne.com
Linux Device Driver giometti@gnudd.com
Embedded Systems giometti@linux.it
UNIX programming phone: +39 349 2432127
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prev parent reply other threads:[~2006-04-28 18:27 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-27 15:49 trouble on serial console for au1100 Rodolfo Giometti
2006-04-27 23:24 ` Rodolfo Giometti
2006-04-28 11:19 ` Freddy Spierenburg
2006-04-28 11:19 ` Freddy Spierenburg
2006-04-28 17:19 ` Jordan Crouse
2006-05-02 12:21 ` Rodolfo Giometti
2006-04-28 18:27 ` Rodolfo Giometti [this message]
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