From: Guenter Roeck <linux@roeck-us.net>
To: Huang Rui <ray.huang@amd.com>, Wim Van Sebroeck <wim@iguana.be>
Cc: Borislav Petkov <bp@alien8.de>,
linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: An issue about sp5100 watchdog
Date: Mon, 7 Dec 2015 23:03:31 -0800 [thread overview]
Message-ID: <566680C3.2000501@roeck-us.net> (raw)
In-Reply-To: <20151208054232.GC10759@hr-amur2>
On 12/07/2015 09:42 PM, Huang Rui wrote:
> Hi all,
>
> I found an issue in some of AMD platforms about sp5100, that the MMIO
> address (0x51413120) is already used by System RAM
> (00100000-7c2befff)...
>
> [ 29.928096] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
> [ 29.928302] sp5100_tco: PCI Vendor ID: 0x1022, Device ID: 0x790b, Revision ID: 0x4a
> [ 29.928319] sp5100_tco: Got 0x51413120 from indirect I/O
> [ 29.928323] sp5100_tco: MMIO address 0x51413120 already in use
> [ 29.928332] sp5100_tco: SBResource_MMIO is disabled(0xe000a0)
> [ 29.928333] sp5100_tco: failed to find MMIO address, giving up.
>
If I understand the code correctly, the problem is really "SBResource_MMIO is disabled".
Presumably that is done in the BIOS. No idea if anything can be done about that.
Guenter
> 00100000-7c2befff : System RAM
> 01000000-017b1ab3 : Kernel code
> 017b1ab4-01d4ce7f : Kernel data
> 01ec4000-02008fff : Kernel bss
> 7c2bf000-7c8befff : reserved
> 7c8bf000-7cbbefff : ACPI Non-volatile Storage
> 7cbb6000-7cbb9fff : MSFT0101:00
> 7cbba000-7cbbdfff : MSFT0101:00
> 7cbbf000-7cbfefff : ACPI Tables
> 7cbff000-7cbfffff : System RAM
> 7cc00000-7effffff : reserved
>
> Any idea?
>
> Thanks,
> Rui
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next prev parent reply other threads:[~2015-12-08 7:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-08 5:42 An issue about sp5100 watchdog Huang Rui
2015-12-08 7:03 ` Guenter Roeck [this message]
2015-12-08 8:15 ` Huang Rui
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