Date: Thu, 31 Mar 2005 15:19:11 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Scott Long <scottl@samsco.org> Cc: John Baldwin <jhb@FreeBSD.org> Subject: Re: Problems with AMD64 and 8 GB RAM? Message-ID: <20050331054911.GN6252@wantadilla.lemis.com> In-Reply-To: <424B8A4F.7050607@samsco.org> References: <20050330223546.GA4705@troutmask.apl.washington.edu> <20050330224445.GW84137@wantadilla.lemis.com> <200503311032.33718.doconnor@gsoft.com.au> <20050331015429.GH6252@wantadilla.lemis.com> <657eb6604d1e00368d77f047a8b5e074@FreeBSD.org> <20050331040811.GL6252@wantadilla.lemis.com> <424B7C74.4060203@samsco.org> <20050331051458.GM6252@wantadilla.lemis.com> <424B8A94.5070300@alumni.rice.edu> <424B8A4F.7050607@samsco.org>
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On Wednesday, 30 March 2005 at 22:27:43 -0700, Scott Long wrote:
> Jon Noack wrote:
>> On 03/30/05 23:14, Greg 'groggy' Lehey wrote:
>>> On Wednesday, 30 March 2005 at 21:28:36 -0700, Scott Long wrote:
>>>> Greg 'groggy' Lehey wrote:
>>>>> On Wednesday, 30 March 2005 at 23:01:03 -0500, John Baldwin wrote:
>>>>>> It would be interesting to see the contents of your MADT to see if
>>>>>> it's trying to use a 64-bit PA for your APIC.
>>>>>
>>>>> Any suggestions about how to do so?
>>>>
>>>> man acpidump
>>>
>>> How do you run that on a system that won't boot?
>>
>> You said the system worked with 4 GB (albeit detecting only 3.5
>> GB).
Yes, this is correct. A number of people have explained why it only
detected 3.5 GB in this configuration.
>> My perception of this whole ACPI thing is that it is fixed in your
>> BIOS (although it can be overridden by the OS). As such, the
>> amount of RAM you have in the machine shouldn't change acpidump
>> results. Is that not correct?
>
> This is absolutely correct.
Ah, so you meant to say that the output from the system running with 4
GB memory is useful? That wasn't in the man page you pointed to.
What it does say is:
> When invoked with the -t flag, the acpidump utility dumps contents of
> the following tables:
>
> ... MADT
This may be the case, but between man page and output some terminology
must have changed. I can't see any reference to anything like an MADT
there. Does that mean that there isn't one, or that ACPI can't find
it, or does the section APIC refer to/dump the MADT? Here's the
complete output of acpidump -t, anyway:
/*
RSD PTR: OEM=VIAK8, ACPI_Rev=1.0x (0)
RSDT=0xdfee3000, cksum=97
*/
/*
RSDT: Length=44, Revision=1, Checksum=4,
OEMID=VIAK8, OEM Table ID=AWRDACPI, OEM Revision=0x42302e31,
Creator ID=AWRD, Creator Revision=0x0
Entries={ 0xdfee3040, 0xdfee7b40 }
*/
/*
FACP: Length=116, Revision=1, Checksum=255,
OEMID=VIAK8, OEM Table ID=AWRDACPI, OEM Revision=0x42302e31,
Creator ID=AWRD, Creator Revision=0x0
FACS=0xdfee0000, DSDT=0xdfee30c0
INT_MODEL=PIC
Preferred_PM_Profile=Unspecified (0)
SCI_INT=9
SMI_CMD=0x402f, ACPI_ENABLE=0xa1, ACPI_DISABLE=0xa0, S4BIOS_REQ=0x0
PSTATE_CNT=0x0
PM1a_EVT_BLK=0x4000-0x4003
PM1a_CNT_BLK=0x4004-0x4005
PM_TMR_BLK=0x4008-0x400b
GPE0_BLK=0x4020-0x4023
P_LVL2_LAT=101 us, P_LVL3_LAT=1001 us
FLUSH_SIZE=0, FLUSH_STRIDE=0
DUTY_OFFSET=0, DUTY_WIDTH=1
DAY_ALRM=125, MON_ALRM=126, CENTURY=50
IAPC_BOOT_ARCH=
Flags={WBINVD,PROC_C1,SLP_BUTTON,RTC_S4,RESET_REG}
RESET_REG=0x00000000:0[0] (Memory), RESET_VALUE=0x44
*/
/*
FACS: Length=64, HwSig=0x00000000, Firm_Wake_Vec=0x00000000
Global_Lock=
Flags=
Version=0
*/
/*
DSDT: Length=19020, Revision=1, Checksum=28,
OEMID=VIAK8, OEM Table ID=AWRDACPI, OEM Revision=0x1000,
Creator ID=MSFT, Creator Revision=0x100000e
*/
/*
APIC: Length=104, Revision=1, Checksum=145,
OEMID=VIAK8, OEM Table ID=AWRDACPI, OEM Revision=0x42302e31,
Creator ID=AWRD, Creator Revision=0x0
Local APIC ADDR=0xfee00000
Flags={PC-AT}
Type=Local APIC
ACPI CPU=0
Flags={ENABLED}
APIC ID=0
Type=Local APIC
ACPI CPU=1
Flags={ENABLED}
APIC ID=1
Type=IO APIC
APIC ID=2
INT BASE=0
ADDR=0x00000000fec00000
Type=INT Override
BUS=0
IRQ=0
INTR=2
Flags={Polarity=conforming, Trigger=conforming}
Type=INT Override
BUS=0
IRQ=9
INTR=9
Flags={Polarity=active-lo, Trigger=level}
Type=Local NMI
ACPI CPU=0
LINT Pin=1
Flags={Polarity=active-hi, Trigger=edge}
Type=Local NMI
ACPI CPU=1
LINT Pin=1
Flags={Polarity=active-hi, Trigger=edge}
*/
Since I don't know anything about ACPI, this doesn't say too much to
me. Suggestions welcome. If the APIC section is the MADT, it looks
as if we should update the docco.
Greg
--
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