acpi: Bump MADT to revision 3

Add structs and methods for revision 3.

Change-Id: Ida75f530551ad2b8b20ce7fdeffb3befc51296bc
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39806
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/arch/x86/acpi.c

@@ -127,6 +127,18 @@ int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
 	return lapic->length;
 }
 
+int acpi_create_madt_lx2apic(acpi_madt_lx2apic_t *lapic, u32 cpu, u32 apic)
+{
+	lapic->type = LOCAL_X2APIC; /* Local APIC structure */
+	lapic->reserved = 0;
+	lapic->length = sizeof(acpi_madt_lx2apic_t);
+	lapic->flags = (1 << 0); /* Processor/LAPIC enabled */
+	lapic->processor_id = cpu;
+	lapic->x2apic_id = apic;
+
+	return lapic->length;
+}
+
 unsigned long acpi_create_madt_lapics(unsigned long current)
 {
 	struct device *cpu;
@@ -146,8 +158,12 @@ unsigned long acpi_create_madt_lapics(unsigned long current)
 	if (num_cpus > 1)
 		bubblesort(apic_ids, num_cpus, NUM_ASCENDING);
 	for (index = 0; index < num_cpus; index++) {
-		current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current,
+		if (apic_ids[index] < 0xff)
-				index, apic_ids[index]);
+			current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current,
+					index, apic_ids[index]);
+		else
+			current += acpi_create_madt_lx2apic((acpi_madt_lx2apic_t *)current,
+					index, apic_ids[index]);
 	}
 
 	return current;
@@ -191,6 +207,21 @@ int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
 	return lapic_nmi->length;
 }
 
+int acpi_create_madt_lx2apic_nmi(acpi_madt_lx2apic_nmi_t *lapic_nmi, u32 cpu,
+				 u16 flags, u8 lint)
+{
+	lapic_nmi->type = LOCAL_X2APIC_NMI; /* Local APIC NMI structure */
+	lapic_nmi->length = sizeof(acpi_madt_lx2apic_nmi_t);
+	lapic_nmi->flags = flags;
+	lapic_nmi->processor_id = cpu;
+	lapic_nmi->lint = lint;
+	lapic_nmi->reserved[0] = 0;
+	lapic_nmi->reserved[1] = 0;
+	lapic_nmi->reserved[2] = 0;
+
+	return lapic_nmi->length;
+}
+
 void acpi_create_madt(acpi_madt_t *madt)
 {
 	acpi_header_t *header = &(madt->header);
@@ -1556,7 +1587,7 @@ int get_acpi_table_revision(enum acpi_tables table)
 	case FADT:
 		return ACPI_FADT_REV_ACPI_6_0;
 	case MADT: /* ACPI 3.0: 2, ACPI 4.0/5.0: 3, ACPI 6.2b/6.3: 5 */
-		return 2;
+		return 3;
 	case MCFG:
 		return 1;
 	case TCPA:

src/arch/x86/include/arch/acpi.h

@@ -466,6 +466,26 @@ typedef struct acpi_madt_irqoverride {
 	u16 flags;			/* MPS INTI flags */
 } __packed acpi_madt_irqoverride_t;
 
+/* MADT: Processor Local x2APIC Structure */
+typedef struct acpi_madt_lx2apic {
+	u8 type;			/* Type (9) */
+	u8 length;			/* Length in bytes (16) */
+	u16 reserved;
+	u32 x2apic_id;			/* Local x2APIC ID */
+	u32 flags;			/* Same as Local APIC flags */
+	u32 processor_id;		/* ACPI processor ID */
+} __packed acpi_madt_lx2apic_t;
+
+/* MADT: Processor Local x2APIC NMI Structure */
+typedef struct acpi_madt_lx2apic_nmi {
+	u8 type;			/* Type (10) */
+	u8 length;			/* Length in bytes (12) */
+	u16 flags;			/* Same as MPS INTI flags */
+	u32 processor_id;		/* ACPI processor ID */
+	u8 lint;			/* Local APIC LINT# */
+	u8 reserved[3];
+} __packed acpi_madt_lx2apic_nmi_t;
+
 #define ACPI_DBG2_PORT_SERIAL			0x8000
 #define  ACPI_DBG2_PORT_SERIAL_16550		0x0000
 #define  ACPI_DBG2_PORT_SERIAL_16550_DBGP	0x0001
@@ -871,7 +891,9 @@ void acpi_create_madt(acpi_madt_t *madt);
 unsigned long acpi_create_madt_lapics(unsigned long current);
 unsigned long acpi_create_madt_lapic_nmis(unsigned long current, u16 flags,
 					  u8 lint);
-
+int acpi_create_madt_lx2apic(acpi_madt_lx2apic_t *lapic, u32 cpu, u32 apic);
+int acpi_create_madt_lx2apic_nmi(acpi_madt_lx2apic_nmi_t *lapic_nmi, u32 cpu,
+				 u16 flags, u8 lint);
 int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic);
 int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek,
 			 u32 flags);