[SeaBIOS] [PATCH] acpi: add Local APIC NMI Structure to MADT.
Gleb Natapov
gleb at redhat.com
Sun Oct 2 10:31:14 CEST 2011
On Thu, Sep 22, 2011 at 09:58:58PM +0900, Kenji Kaneshige wrote:
> Add Local APIC NMI Structure to ACPI MADT.
>
> Signed-off-by: Kenji Kaneshige <kaneshige.kenji at jp.fujitsu.com>
> ---
> src/acpi.c | 24 ++++++++++++++++++++++--
> 1 file changed, 22 insertions(+), 2 deletions(-)
>
> Index: seabios/src/acpi.c
> ===================================================================
> --- seabios.orig/src/acpi.c
> +++ seabios/src/acpi.c
> @@ -134,6 +134,14 @@ struct madt_intsrcovr {
> u16 flags;
> } PACKED;
>
> +struct madt_local_nmi {
> + ACPI_SUB_HEADER_DEF
> + u8 processor_id; /* ACPI processor id */
> + u16 flags; /* MPS INTI flags */
> + u8 lint; /* Local APIC LINT# */
> +} PACKED;
> +
> +
> /*
> * ACPI 2.0 Generic Address Space definition.
> */
> @@ -288,7 +296,9 @@ build_madt(void)
> int madt_size = (sizeof(struct multiple_apic_table)
> + sizeof(struct madt_processor_apic) * MaxCountCPUs
> + sizeof(struct madt_io_apic)
> - + sizeof(struct madt_intsrcovr) * 16);
> + + sizeof(struct madt_intsrcovr) * 16
> + + sizeof(struct madt_local_nmi) * MaxCountCPUs);
> +
> struct multiple_apic_table *madt = malloc_high(madt_size);
> if (!madt) {
> warn_noalloc();
> @@ -340,7 +350,17 @@ build_madt(void)
> intsrcovr++;
> }
>
> - build_header((void*)madt, APIC_SIGNATURE, (void*)intsrcovr - (void*)madt, 1);
> + struct madt_local_nmi *local_nmi = (void*)intsrcovr;
> + for (i = 0; i < MaxCountCPUs; i++) {
> + local_nmi->type = APIC_LOCAL_NMI;
> + local_nmi->length = sizeof(*local_nmi);
> + local_nmi->processor_id = i;
Spec says that value 0xFF signifies that this applies to all processors
in the machine, so you need to create only one APIC_LOCAL_NMI entry with
0xFF as a processor id.
> + local_nmi->flags = 0;
> + local_nmi->lint = 1; /* LINT1 */
> + local_nmi++;
> + }
> +
> + build_header((void*)madt, APIC_SIGNATURE, (void*)local_nmi - (void*)madt, 1);
> return madt;
> }
>
>
>
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> SeaBIOS at seabios.org
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--
Gleb.
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