RE: [OpenBIOS] devbios on linux ln lx440gx+

[Ralph Stickley]

Here's a shot in the dark...
Check the BIOS to make sure the BIOS shadowing is not enabled....
Boot to a DOS floppy and see if you can program it from there, at least
that will verify your hardware jumper settings and (maybe) your BIOS setups.
Good luck
Ralph
> From: 	Ronald G. Minnich[SMTP:[e-mail]]
> Sent: 	Thursday, January 20, 2000 1:47 PM
> To: 	[e-mail]
> Subject: 	[OpenBIOS] devbios on linux ln lx440gx+
>
> here's the problem. I have a:
> Linux rp128 2.2.13 #3 SMP Wed Dec 29 09:04:43 MST 1999 i686 unknown
>
> with:
>
> PCI devices found:
>   Bus  0, device   0, function  0:
>     Host bridge: Intel Unknown device (rev 0).
>       Vendor id=8086. Device id=71a0.
>       Medium devsel.  Master Capable.  Latency=64.  
>       Prefetchable 32 bit memory at 0xf8000000 [0xf8000008].
>   Bus  0, device   1, function  0:
>     PCI bridge: Intel Unknown device (rev 0).
>       Vendor id=8086. Device id=71a1.
>       Medium devsel.  Master Capable.  Latency=64.  Min Gnt=132.
>   Bus  0, device  18, function  3:
>     Bridge: Intel 82371AB PIIX4 ACPI (rev 2).
>       Medium devsel.  Fast back-to-back capable.
>
> I think the 71a0 is the PCI host bride for the 440gx+, which is close to a
> 440gx hostbridge (the 440gx is a 7180, I think). I added this to the
> devbios pci bridge table:
>
> const struct functions pci_functions[] = {
>   { (int[]) { 0x8086122d, 0x80861235, 0x80861237, 0x80861250, 0x80867030,
>               0x80867100, 0x80867180, 0x808684c4,
>               /* 440gx+? */ 0x808671a0,
>               0 },
>     (int[]) { 0x8086122e, 0x80861234, 0x80867000, 0x80867110,
>               0 },
>     intel_shadon, intel_shadoff, intel_wpon, intel_wpoff, intel_backout },
>
> Devbios now finds my pci hostbridge, finds the ISA bridge, and then tries
> to probe the BIOS memory with no luck. What this means is that I can't get
> to the flash. The flash is an Intel 28F008S5 part.
>
> The values of the hostbridge and PIIX4 registers look like devbios expects
> them to. I've moved the jumper to enable BIOS writes.
>
> Any good ideas on what I could be missing?
>
> Thanks
> ron
>
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