seabios: Add Local APIC NMI Structure to ACPI MADT

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@jp.fujitsu.com>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>

diff --git a/src/acpi.c b/src/acpi.c
index 0ff1b63d71e8f286ac425183a33620b70487f7be..a3770ae995e1a3c81d203e93526e25f104bd1193 100644 (file)
--- a/src/acpi.c
+++ b/src/acpi.c
@@ -139,6 +139,14 @@ 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.
  */
@@ -300,7 +308,9 @@ 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();
@@ -352,7 +362,15 @@ 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;
 }