acpi: Add SRAT x2APIC table support
For platforms using X2APIC mode add SRAT x2APIC table
generation. This allows to setup proper SRAT tables.
Change-Id: If78c423884b7ce9330f0f46998ac83da334ee26d
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73365
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/acpi/acpi.c b/src/acpi/acpi.c
index 04a59b1..2706bf7 100644
--- a/src/acpi/acpi.c
+++ b/src/acpi/acpi.c
@@ -531,6 +531,19 @@
return lapic->length;
}
+int acpi_create_srat_x2apic(acpi_srat_x2apic_t *x2apic, u32 node, u32 apic)
+{
+ memset((void *)x2apic, 0, sizeof(acpi_srat_x2apic_t));
+
+ x2apic->type = 2; /* Processor x2APIC structure */
+ x2apic->length = sizeof(acpi_srat_x2apic_t);
+ x2apic->flags = (1 << 0); /* Enabled (the use of this structure). */
+ x2apic->proximity_domain = node;
+ x2apic->x2apic_id = apic;
+
+ return x2apic->length;
+}
+
int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek,
u32 flags)
{
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h
index b92c77e..a108d6a 100644
--- a/src/include/acpi/acpi.h
+++ b/src/include/acpi/acpi.h
@@ -353,6 +353,18 @@
#define ACPI_SRAT_STRUCTURE_MEM 1
#define ACPI_SRAT_STRUCTURE_GIA 5
+/* SRAT: Processor x2APIC Structure */
+typedef struct acpi_srat_x2apic {
+ u8 type; /* Type (0) */
+ u8 length; /* Length in bytes (16) */
+ u16 reserved; /* Reserved - Must be zero */
+ u32 proximity_domain; /* Proximity domain */
+ u32 x2apic_id; /* x2APIC ID */
+ u32 flags; /* Enable bit 0 = 1, other bits reserved to 0 */
+ u32 clock_domain; /* _CDM Clock Domain */
+ u32 reserved1; /* Reserved */
+} __packed acpi_srat_x2apic_t;
+
/* SRAT: Processor Local APIC/SAPIC Affinity Structure */
typedef struct acpi_srat_lapic {
u8 type; /* Type (0) */
@@ -1337,6 +1349,7 @@
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_x2apic(acpi_srat_x2apic_t *x2apic, u32 node, u32 apic);
int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek, u32 sizek,
u32 flags);
/*