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acpi: introduce and use ACPI_MADT_PCAT_COMPAT define

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The multiple APIC flags table from the ACPI specification version 6.4
was used as a reference.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I36f67ca21465bc8753bb36896ee05669de6de333
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82640
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Felix Held
2024-05-24 13:58:34 +02:00
committed by Nico Huber
parent 69bc2cc7de
commit 824d9303f2
2 changed files with 4 additions and 1 deletions
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2
src/acpi/acpi_apic.c
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@@ -234,7 +234,7 @@ unsigned long acpi_arch_fill_madt(acpi_madt_t *madt, unsigned long current)
madt->lapic_addr = cpu_get_lapic_addr();
if (CONFIG(ACPI_HAVE_PCAT_8259))
madt->flags |= 1;
madt->flags |= ACPI_MADT_PCAT_COMPAT;
if (CONFIG(ACPI_COMMON_MADT_LAPIC))
current = acpi_create_madt_lapics_with_nmis(current);

3
src/include/acpi/acpi.h
View File

@@ -458,6 +458,9 @@ typedef struct acpi_madt {
u32 flags; /* Multiple APIC flags */
} __packed acpi_madt_t;
/* MADT Feature Flags */
#define ACPI_MADT_PCAT_COMPAT (1 << 0)
/*
* LPIT (Low Power Idle Table)
* Conforms to "Intel Low Power S0 Idle" specification, rev 002 from July 2017.