How do I interpret Northbridge status codes?

  • Thread starter Thread starter Timur Tabi
  • Start date Start date
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Timur Tabi

I'm trying to debug a Linux kernel machine check exception, and it
displays this message upon failure:

Northbridge status b455200000000a13
GART error 3
Lost an northbridge error
NB status: unrecoverable
NB error address 000000001ed512d8
Error uncorrected
Address: 000000001ed512d8
MCE at EIP 43571b ESP 7fbfffef28
CPU 0: Machine Check Exception: 0000000000000000

I'm not a hardware person, so this is a little out of my league, but
not by much. What I need to know is what the number b455200000000a13
represents. I'm assuming that number is a bit pattern that contains a
bunch of flags and status codes that are read directly from the
Northbridge chipset. If so, can someone point me to a document that
will tell me how to interpret this number? Thanks.
 
I'm trying to debug a Linux kernel machine check exception, and it
displays this message upon failure:

Northbridge status b455200000000a13
GART error 3
Lost an northbridge error
NB status: unrecoverable
NB error address 000000001ed512d8
Error uncorrected
Address: 000000001ed512d8
MCE at EIP 43571b ESP 7fbfffef28
CPU 0: Machine Check Exception: 0000000000000000

I'm not a hardware person, so this is a little out of my league, but
not by much. What I need to know is what the number b455200000000a13
represents. I'm assuming that number is a bit pattern that contains a
bunch of flags and status codes that are read directly from the
Northbridge chipset. If so, can someone point me to a document that
will tell me how to interpret this number? Thanks.
Click to expand...

Here's where you can find the AGP 3.0 specs:
http://www.intel.com/technology/agp/downloads/Spec_1_0_final_Sep10.pdf.
There's *some* stuff on status register there but you'd need to get
detailed info on the north bridge chip in the system you're dealing with -
something like a BIOS & Kernel Programmer's Guide.

Rgds, George Macdonald

"Just because they're paranoid doesn't mean you're not psychotic" - Who, me??
 
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