diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c
index 5fd2b7493a..3677477f40 100644
--- a/src/soc/intel/apollolake/acpi.c
+++ b/src/soc/intel/apollolake/acpi.c
@@ -18,6 +18,10 @@
 
 unsigned long acpi_fill_mcfg(unsigned long current)
 {
+	/* PCI Segment Group 0, Start Bus Number 0, End Bus Number is 255 */
+	current += acpi_create_mcfg_mmconfig((void *) current,
+					     CONFIG_MMCONF_BASE_ADDRESS, 0, 0,
+					     255);
 	return current;
 }