soc/intel/common/block/acpi: Add soc MADT IOAPIC hook

Add a hook for SOCs to provide an IOAPIC MADT table. If the
SOC doesn't provide a table then a standard setting is used.

Change-Id: Ic818a634e4912d88ef93971deb4da5ab708c9020
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48246
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/acpi.h b/src/soc/intel/common/block/include/intelblocks/acpi.h
index cd3a309c21..d76d95ab11 100644
--- a/src/soc/intel/common/block/include/intelblocks/acpi.h
+++ b/src/soc/intel/common/block/include/intelblocks/acpi.h
@@ -68,4 +68,16 @@ void soc_power_states_generation(int core_id, int cores_per_package);
  */
 int common_calculate_power_ratio(int tdp, int p1_ratio, int ratio);
 
+struct madt_ioapic_info {
+	u8  id;
+	u32 addr;
+	u32 gsi_base;
+};
+
+/*
+ * Returns a table of MADT ioapic_info entries and the number of entries
+ * If the SOC doesn't implement this hook a default ioapic setting is used.
+ */
+const struct madt_ioapic_info *soc_get_ioapic_info(size_t *entries);
+
 #endif				/* _SOC_INTEL_COMMON_BLOCK_ACPI_H_ */