Intel DP45SG motherboard problem (amd64)

[John Baldwin]

On Wednesday 24 February 2010 6:32:21 pm Alastair Hogge wrote:
> On Wed February 24 2010 22:46:29 John Baldwin wrote:
> > On Tuesday 23 February 2010 5:40:31 pm Alastair Hogge wrote:
> > > On Wed February 24 2010 00:14:00 John Baldwin wrote:
> > > > On Tuesday 23 February 2010 8:51:04 am Alastair Hogge wrote:
> > > > > > > Hello John,
> > > > > > >
> > > > > > > In regards to an old email thread:
> > > > > > > http://lists.freebsd.org/pipermail/freebsd-hardware/2009-
> > > > > >
> > > > > > June/thread.html#5887
> > > > > >
> > > > > > > I've attached the i386 dmesg & "mptable device" from a
> > > > > > > 9.0-CURRENT -r204168 system which still fails on booting an amd64
> > > > > > > CD.
> > > > > >
> > > > > > You need to build a custom amd64 kernel which includes "device
> > 
> > mptable"
> > 
> > > > > > and use that.  You may need to set 'hint.acpi.0.disabled=1' as well
> > > > > > to force ACPI to be disabled.
> > > > >
> > > > > OK, I've cross built an amd64 system and installed it on a spare HDD.
> > > > > Once it booted I ran "mptable -verbose -dmesg -grope" Here is the
> > 
> > output:
> > > > It appears that the new kernel works, yes?
> > >
> > > Yes
> > >
> > > > That should at least get you a
> > > > working system now.
> > >
> > > Pretty exciting, however, it looks like that booting from an installation
> > > CD is still problematic.
> > 
> > Yes, but it is really odd that you do not have any ACPI tables.  All 64-bit
> > machines should have ACPI.
> > 
> > > > I have no idea why the system does not provide ACPI
> > > > tables.  Is there a BIOS option to enable/disable ACPI perhaps?
> > >
> > > I can't find anything .
> > 
> > Can you save the output of 'acpidump -d -t' to a file and post the URL?  If
> > the output is very short, you can just paste it inline into a reply.
> #  acpidump -d -t
> /*
>   RSD PTR: OEM=INTEL, ACPI_Rev=2.0x (2)
>         XSDT=0xcfd62e18, length=36, cksum=1
>  */
> acpidump: XSDT is corrupted

Hmm, the checksum for the XSDT is bad.  You can try hacking
src/usr.sbin/acpi/acpidump/acpi.c to disable the checksum check for the XSDT.
Just look for the 'XSDT is corrupted' string in that source file and comment
out the call to acpi_checksum().  Something like this:

		rsdp = (ACPI_TABLE_HEADER *)acpi_map_sdt(rp->XsdtPhysicalAddress);
		if (memcmp(rsdp->Signature, "XSDT", 4) != 0 /* ||
		    acpi_checksum(rsdp, rsdp->Length) != 0 */)
			errx(1, "XSDT is corrupted");
		addr_size = sizeof(uint64_t);

Then see if acpidump -d -t gets any further.  I would also look for a BIOS
update perhaps, and/or complain to your motherboard vendor that their BIOS is
broken.

-- 
John Baldwin