From: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
ACPI NMI Structure describes LINT pin (LINT0 or LINT1) information to
which NMI is connected, and it is needed by OS to initialize local APIC.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@xxxxxxxxxxxxxx>
Reviewed-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
---
src/acpi.c | 22 ++++++++++++++++++++--
1 file changed, 20 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));
+
struct multiple_apic_table *madt = malloc_high(madt_size);
if (!madt) {
warn_noalloc();
@@ -340,7 +350,15 @@ build_madt(void)
intsrcovr++;
}
- build_header((void*)madt, APIC_SIGNATURE, (void*)intsrcovr - (void*)madt, 1);
+ struct madt_local_nmi *local_nmi = (void*)intsrcovr;
+ local_nmi->type = APIC_LOCAL_NMI;
+ local_nmi->length = sizeof(*local_nmi);
+ local_nmi->processor_id = 0xff; /* all processors */
+ 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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