[coreboot] problem about ioapic

[aaron lwe]

On Sat, Apr 19, 2008 at 1:37 PM, aaron lwe  wrote:
> On Sat, Apr 19, 2008 at 5:01 AM, Rudolf Marek  wrote:
> > Hi,
> >
> > What northbridge it is? I think you need two things:
> >     /* Set APIC to FSB message bus. */
> >     l[0] = 0x3;
> >     val = l[4];
> >     l[4] = (val & 0xFFFFFE) | 1;
> >
> > (this is in the vt8237r_lpc.c) so If you use this you should be safe.
> >
> > Second thing you need is to route the APIC messages through chipset
> > correctly.
> >  I think this is D0F7/D11F7 0x7c bit 3. In fact you need to have correct
> > values there for the whole 0x70-0x7f range.
> >
> > Also, it seems you will need some timer overrides:
> >   /* IRQ0 -> APIC IRQ2. */
> >     current +=

acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
> >                                             current, 0, 0, 2, 0x0);
> >
> > Thanks,
> >
> > Rudolf
>
> The northbridge is CN700. I'll try this on Monday, thanks.

Hi,

I've programmed CN700 D0F7 Rx70-7F with the factory BIOS value, but
 the problem remained.
 And I've tried both to use acpi madt table(when acpi enabled) and
 mptable(when acpi off), so I
 guess it shouldn't be a configuration tables's problem.

The CN700 D0F7 Rx7c's value is 0 and it's not mentioned on the
 datasheet, and there is no D11F7
 on VT8237R, I wonder if I misunderstood your meaning?

Thanks