5 files changed, 26 insertions, 1 deletions
diff --git a/src/soc/intel/xeon_sp/Makefile.inc b/src/soc/intel/xeon_sp/Makefile.inc
index a10075ab04..2e50e64c25 100644
--- a/src/soc/intel/xeon_sp/Makefile.inc
+++ b/src/soc/intel/xeon_sp/Makefile.inc
@@ -9,7 +9,7 @@ bootblock-y += bootblock.c spi.c lpc.c gpio.c pch.c
 romstage-y += romstage.c reset.c util.c spi.c gpio.c pmutil.c memmap.c
 romstage-y += ../../../cpu/intel/car/romstage.c
 ramstage-y += uncore.c reset.c util.c lpc.c spi.c gpio.c nb_acpi.c ramstage.c chip_common.c
-ramstage-y += memmap.c
+ramstage-y += memmap.c pch.c
 ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_PMC) += pmc.c
 ramstage-$(CONFIG_HAVE_ACPI_TABLES) += acpi.c
 postcar-y += spi.c
diff --git a/src/soc/intel/xeon_sp/cpx/chip.c b/src/soc/intel/xeon_sp/cpx/chip.c
index b7752b25cd..6beebdf925 100644
--- a/src/soc/intel/xeon_sp/cpx/chip.c
+++ b/src/soc/intel/xeon_sp/cpx/chip.c
@@ -10,6 +10,7 @@
 #include <soc/acpi.h>
 #include <soc/chip_common.h>
 #include <soc/cpu.h>
+#include <soc/pch.h>
 #include <soc/ramstage.h>
 #include <soc/p2sb.h>
 #include <soc/soc_util.h>
@@ -76,6 +77,7 @@ static void chip_init(void *data)
 {
 	printk(BIOS_DEBUG, "coreboot: calling fsp_silicon_init\n");
 	fsp_silicon_init(false);
+	override_hpet_ioapic_bdf();
 	pch_enable_ioapic();
 	setup_lapic();
 	p2sb_unhide();
diff --git a/src/soc/intel/xeon_sp/include/soc/pch.h b/src/soc/intel/xeon_sp/include/soc/pch.h
index 84d5e4896b..0be14ae966 100644
--- a/src/soc/intel/xeon_sp/include/soc/pch.h
+++ b/src/soc/intel/xeon_sp/include/soc/pch.h
@@ -9,4 +9,6 @@
 void pch_disable_devfn(struct device *dev);
 #endif
 
+void override_hpet_ioapic_bdf(void);
+
 #endif /* _SOC_PCH_H_ */
diff --git a/src/soc/intel/xeon_sp/pch.c b/src/soc/intel/xeon_sp/pch.c
index 2b35223d16..8de7743d94 100644
--- a/src/soc/intel/xeon_sp/pch.c
+++ b/src/soc/intel/xeon_sp/pch.c
@@ -5,7 +5,9 @@
 #include <soc/pcr_ids.h>
 #include <intelblocks/pcr.h>
 #include <intelblocks/rtc.h>
+#include <intelblocks/p2sb.h>
 #include <soc/bootblock.h>
+#include <soc/pch.h>
 #include <soc/pmc.h>
 #include <console/console.h>
 
@@ -51,3 +53,20 @@ void bootblock_pch_init(void)
 	 */
 	soc_config_acpibase();
 }
+
+void override_hpet_ioapic_bdf(void)
+{
+	union p2sb_bdf ioapic_bdf = {
+		.bus = PCH_IOAPIC_BUS_NUMBER,
+		.dev = PCH_IOAPIC_DEV_NUM,
+		.fn = PCH_IOAPIC_FUNC_NUM,
+	};
+	union p2sb_bdf hpet_bdf = {
+		.bus = HPET_BUS_NUM,
+		.dev = HPET_DEV_NUM,
+		.fn = HPET0_FUNC_NUM,
+	};
+
+	p2sb_set_ioapic_bdf(ioapic_bdf);
+	p2sb_set_hpet_bdf(hpet_bdf);
+}
diff --git a/src/soc/intel/xeon_sp/skx/chip.c b/src/soc/intel/xeon_sp/skx/chip.c
index a345c3ef6e..7fe330b37e 100644
--- a/src/soc/intel/xeon_sp/skx/chip.c
+++ b/src/soc/intel/xeon_sp/skx/chip.c
@@ -5,6 +5,7 @@
 #include <device/pci.h>
 #include <soc/acpi.h>
 #include <soc/chip_common.h>
+#include <soc/pch.h>
 #include <soc/ramstage.h>
 #include <soc/soc_util.h>
 #include <soc/util.h>
@@ -43,6 +44,7 @@ static void soc_init(void *data)
 {
 	printk(BIOS_DEBUG, "coreboot: calling fsp_silicon_init\n");
 	fsp_silicon_init(false);
+	override_hpet_ioapic_bdf();
 }
 
 static void soc_final(void *data)