diff --git a/src/soc/intel/cannonlake/acpi/platform.asl b/src/soc/intel/cannonlake/acpi/platform.asl
index 773cdcb14b..da61619342 100644
--- a/src/soc/intel/cannonlake/acpi/platform.asl
+++ b/src/soc/intel/cannonlake/acpi/platform.asl
@@ -20,15 +20,6 @@
 /* Generic indicator for sleep state */
 #include <soc/intel/common/acpi/platform.asl>
 
-/* The APM port can be used for generating software SMIs */
-
-OperationRegion (APMP, SystemIO, 0xb2, 2)
-Field (APMP, ByteAcc, NoLock, Preserve)
-{
-	APMC, 8,	// APM command
-	APMS, 8		// APM status
-}
-
 /*
  * The _PIC method is called by the OS to choose between interrupt
  * routing via the i8259 interrupt controller or the APIC.
diff --git a/src/soc/intel/icelake/acpi/platform.asl b/src/soc/intel/icelake/acpi/platform.asl
index 080bf7b960..b89fd4685a 100644
--- a/src/soc/intel/icelake/acpi/platform.asl
+++ b/src/soc/intel/icelake/acpi/platform.asl
@@ -18,15 +18,6 @@
 /* Generic indicator for sleep state */
 #include <soc/intel/common/acpi/platform.asl>
 
-/* The APM port can be used for generating software SMIs */
-
-OperationRegion (APMP, SystemIO, 0xb2, 2)
-Field (APMP, ByteAcc, NoLock, Preserve)
-{
-	APMC, 8,	// APM command
-	APMS, 8		// APM status
-}
-
 /*
  * The _PIC method is called by the OS to choose between interrupt
  * routing via the i8259 interrupt controller or the APIC.
diff --git a/src/soc/intel/skylake/acpi/platform.asl b/src/soc/intel/skylake/acpi/platform.asl
index 39debe1476..19345b21db 100644
--- a/src/soc/intel/skylake/acpi/platform.asl
+++ b/src/soc/intel/skylake/acpi/platform.asl
@@ -18,15 +18,6 @@
 /* Enable ACPI _SWS methods */
 #include <soc/intel/common/acpi/acpi_wake_source.asl>
 
-/* The APM port can be used for generating software SMIs */
-
-OperationRegion (APMP, SystemIO, 0xb2, 2)
-Field (APMP, ByteAcc, NoLock, Preserve)
-{
-	APMC, 8,	// APM command
-	APMS, 8		// APM status
-}
-
 /* Port 80 POST */
 
 OperationRegion (POST, SystemIO, 0x80, 1)