[SeaBIOS] [SeaBIOS PATCH 1/2] acpi: report real I/O APIC ID (0) on MADT table (v2)
Eduardo Habkost
ehabkost at redhat.com
Tue Jul 24 19:20:43 CEST 2012
On Mon, Jul 23, 2012 at 03:16:30PM +0300, Gleb Natapov wrote:
> On Fri, Jul 20, 2012 at 02:04:49PM -0300, Eduardo Habkost wrote:
> > When resetting an I/O APIC, its ID is set to 0, and SeaBIOS doesn't
> > change it, so report it correctly on the MADT table.
> >
> > Some hardware may require the BIOS to initialize I/O APIC ID to an
> > unique value, but SeaBIOS doesn't do that. This patch at least makes the
> > MADT table reflect reality.
> >
> > Changes v1 -> v2:
> > - Cosmetic: whitespace change (removed extra newline)
> > - New patch description
> >
> > Signed-off-by: Eduardo Habkost <ehabkost at redhat.com>
> > ---
> > src/acpi.c | 2 +-
> > src/config.h | 1 +
> > 2 files changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/src/acpi.c b/src/acpi.c
> > index d39cbd9..da3bc57 100644
> > --- a/src/acpi.c
> > +++ b/src/acpi.c
> > @@ -336,7 +336,7 @@ build_madt(void)
> > struct madt_io_apic *io_apic = (void*)apic;
> > io_apic->type = APIC_IO;
> > io_apic->length = sizeof(*io_apic);
> > - io_apic->io_apic_id = CountCPUs;
> > + io_apic->io_apic_id = BUILD_IOAPIC_ID;
> > io_apic->address = cpu_to_le32(BUILD_IOAPIC_ADDR);
> > io_apic->interrupt = cpu_to_le32(0);
> >
> mptable also have ioapic_id.
Oops. I have grepped for CountCPUs, but somehow I missed it. I will send
a new patch soon. Thanks!
>
> > diff --git a/src/config.h b/src/config.h
> > index 3a70867..0d4066d 100644
> > --- a/src/config.h
> > +++ b/src/config.h
> > @@ -52,6 +52,7 @@
> > #define BUILD_PCIMEM64_END 0x10000000000ULL
> >
> > #define BUILD_IOAPIC_ADDR 0xfec00000
> > +#define BUILD_IOAPIC_ID 0
> > #define BUILD_HPET_ADDRESS 0xfed00000
> > #define BUILD_APIC_ADDR 0xfee00000
> >
> > --
> > 1.7.10.4
>
> --
> Gleb.
>
--
Eduardo
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