linux-kernel - Re: PROBLEM: Can't boot a (HZ = 1000) kernel using an AMD Phenom-II processor

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Date:	Fri, 20 Feb 2009 15:27:26 -0500
From:	Mark Hounschell <dmarkh@....rr.com>
To:	Andreas Herrmann <andreas.herrmann3@....com>
CC:	Borislav Petkov <borislav.petkov@....com>,
	Mark Hounschell <markh@...pro.net>,
	john stultz <johnstul@...ibm.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: PROBLEM: Can't boot a (HZ = 1000) kernel using an AMD Phenom-II
 processor

Mark Hounschell wrote:
> Mark Hounschell wrote:
>> Andreas Herrmann wrote:
>>> On Fri, Feb 20, 2009 at 12:40:31PM -0500, Mark Hounschell wrote:
>>>
>>>> ACPI: HPET id: 0x10b9a201 base: 0xfed00000
>>>   <snip>
>>>
>>>> hpet: hpet_enable(834):
>>>> hpet: ID: 43538301, PERIOD: 429b17e
>>> This means that your BIOS could be bogus.
>>> Obviously ACPI HPET table contains different information about
>>> your HPET configuration than the HPET registers are showing.
>>>
>>> This means that other chipset configuration (e.g. ACPI tables) could
>>> also be wrong.
>>>
>>> To confirm this please provide us output of
>>>
>>> # xxd /sys/firmware/acpi/tables/HPET
>> markh@...ley:~> xxd /sys/firmware/acpi/tables/HPET
>> 0000000: 4850 4554 3800 0000 0101 5258 3738 3020  HPET8.....RX780
>> 0000010: 4157 5244 4143 5049 312e 3042 4157 5244  AWRDACPI1.0BAWRD
>> 0000020: 9800 0000 01a2 b910 0000 0000 0000 d0fe  ................
>> 0000030: 0000 0000 0010 0000
>>
>> Mark
>>
> 
> I don't intend to sound stupid but isn't this a _read only_  HPET ID register,
> read by the BIOS and put in a table which ends up being read by the kernel then
> in turn put in /sys/firmware/acpi/tables/HPET? If it is correct there, doesn't
> that mean the BIOS read it correctly and it is correct? And in turn, mean that
> the function used to read it for your debug printk could just be reading it wrong?
> 
> Also remember in the beginning of this thread this machine was running on a
> Phenom-I and when I put a Phenom II in it I could no longer boot a 1000Hz
> kernel. I know, that often  means nothing. But not always???
> 
> I still have that original Phenom available and it is in another very similar
> BIOSTAR motherboard TA770 A2+ SE and is running a 1000Hz kernel. The MB does
> have a different BIOS mfgr however. Would it be of any benefit to do any of
> these things on that machine?
> 
> 

Ok I sounded stupid anyway. Its the ACPI: HPET id: 0x10b9a201 base: 0xfed00000
that is incorrect? I'll be quiet and wait.

Mark

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