diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c
index 5140369..19d7336 100644
--- a/src/soc/intel/common/block/cse/cse.c
+++ b/src/soc/intel/common/block/cse/cse.c
@@ -1184,6 +1184,68 @@
 		me_reset_with_count();
 }
 
+struct cse_notify_phase_data {
+	bool skip;
+	void (*notify_func)(void);
+};
+
+/*
+ * `cse_final_ready_to_boot` function is native implementation of equivalent events
+ * performed by FSP NotifyPhase(Ready To Boot) API invocations.
+ *
+ * Operations are:
+ * 1. Send EOP to CSE if not done.
+ * 2. Perform global reset lock.
+ * 3. Put HECI1 to D0i3 and disable the HECI1 if the user selects
+ *      DISABLE_HECI1_AT_PRE_BOOT config.
+ */
+static void cse_final_ready_to_boot(void)
+{
+	cse_send_end_of_post();
+
+	cse_control_global_reset_lock();
+
+	if (CONFIG(DISABLE_HECI1_AT_PRE_BOOT)) {
+		cse_set_to_d0i3();
+		heci1_disable();
+	}
+}
+
+/*
+ * `cse_final_end_of_firmware` function is native implementation of equivalent events
+ * performed by FSP NotifyPhase(End of Firmware) API invocations.
+ *
+ * Operations are:
+ * 1. Set D0I3 for all HECI devices.
+ */
+static void cse_final_end_of_firmware(void)
+{
+	heci_set_to_d0i3();
+}
+
+static const struct cse_notify_phase_data notify_data[] = {
+	{
+		.skip         = CONFIG(USE_FSP_NOTIFY_PHASE_READY_TO_BOOT),
+		.notify_func  = cse_final_ready_to_boot,
+	},
+	{
+		.skip         = CONFIG(USE_FSP_NOTIFY_PHASE_END_OF_FIRMWARE),
+		.notify_func  = cse_final_end_of_firmware,
+	},
+};
+
+/*
+ * `cse_final` function is native implementation of equivalent events performed by
+ * each FSP NotifyPhase() API invocations.
+ */
+static void cse_final(struct device *dev)
+{
+	for (size_t i = 0; i < ARRAY_SIZE(notify_data); i++) {
+		if (!notify_data[i].skip)
+			return notify_data[i].notify_func();
+	}
+}
+
 static struct device_operations cse_ops = {
 	.set_resources		= pci_dev_set_resources,
 	.read_resources		= pci_dev_read_resources,
@@ -1191,6 +1253,7 @@
 	.init			= pci_dev_init,
 	.ops_pci		= &pci_dev_ops_pci,
 	.enable			= cse_set_state,
+	.final			= cse_final,
 };
 
 static const unsigned short pci_device_ids[] = {