From: "Hasan Rashid" <hasan@digitalpath.net>
To: linux-kernel@vger.kernel.org
Cc: "Hasan Rashid" <hasan@digitalpath.net>
Subject: Re: CS5536 mfgpt timer setup register hangs board
Date: Fri, 25 Jan 2008 16:17:00 -0800 (PST) [thread overview]
Message-ID: <1920.65.164.104.9.1201306620.squirrel@webmail.digitalpath.net> (raw)
This is what TinyBios posts
-------------------------------------------
PC Engines ALIX.2 v0.99
640 KB Base Memory
130048 KB Extended Memory
01F0 Master 848A CF 128MB
Phys C/H/S 1002/8/32 Log C/H/S 1002/8/32
BIOS setup:
(9) 9600 baud (2) 19200 baud *3* 38400 baud (5) 57600 baud (1) 115200 baud
*C* CHS mode (L) LBA mode (W) HDD wait (V) HDD slave (U) UDMA enable
(M) MFGPT workaround
(P) late PCI init
*R* Serial console enable
(E) PXE boot enable
(X) Xmodem upload
(Q) Quit
The MFGPT workaround is disabled, and I deleted the workaround code that
came with voyage linux's distribution. Anyhow I will try the fix and see
if that solves my problem.
> On 25/01/08 15:50 -0800, Hasan Rashid wrote:
>>
>> Hi,
>>
>> I have been working on a watchdog timer using the mfgpt on AMD Geode
>> CS5536. I initialize the setup register MFGPT0_SETUP (0x6206) with hex
>> value 0x306 (1100000110b). However, after this first initialization if I
>> ever read/write to the register it hangs the system.
>>
>> I have been through all the documentation, tried several different
>> methods
>> but all the efforts, frustratingly, to no avail.
>>
>> Does anyone have any idea as to why would this be? TIA!
>
> It looks like you are using TinyBIOS. Make sure that if you are using
> v0.99
> that you do *not* enable the MFGPT workaround. If you are using an older
> version, then you will need this patch:
>
> http://lkml.org/lkml/2008/1/23/372
>
> And enable mfgptfix on the command line. There seems to be a problem with
> the MFGPT "workaround" that causes hangs exactly like you are seeing.
>
> Jordan
>
> --
> Jordan Crouse
> Systems Software Development Engineer
> Advanced Micro Devices, Inc.
>
>
>
--
Regards,
Hasan Rashid
next reply other threads:[~2008-01-26 0:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-26 0:17 Hasan Rashid [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-01-26 1:14 CS5536 mfgpt timer setup register hangs board Hasan Rashid
2008-01-25 23:50 Hasan Rashid
2008-01-26 0:00 ` Jordan Crouse
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