diff --git a/src/soc/intel/alderlake/finalize.c b/src/soc/intel/alderlake/finalize.c
new file mode 100644
index 0000000..24dbbd6
--- /dev/null
+++ b/src/soc/intel/alderlake/finalize.c
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/*
+ * This file is created based on Intel Alder Lake Processor PCH Datasheet
+ * Document number: 621483
+ * Chapter number: 4, 29
+ */
+
+#include <arch/io.h>
+#include <device/mmio.h>
+#include <bootstate.h>
+#include <console/console.h>
+#include <console/post_codes.h>
+#include <cpu/x86/smm.h>
+#include <device/pci.h>
+#include <intelblocks/lpc_lib.h>
+#include <intelblocks/pcr.h>
+#include <intelblocks/pmclib.h>
+#include <intelblocks/tco.h>
+#include <intelblocks/thermal.h>
+#include <spi-generic.h>
+#include <soc/p2sb.h>
+#include <soc/pci_devs.h>
+#include <soc/pcr_ids.h>
+#include <soc/pm.h>
+#include <soc/smbus.h>
+#include <soc/soc_chip.h>
+#include <soc/systemagent.h>
+
+#define CAMERA1_CLK		0x8000 /* Camera 1 Clock */
+#define CAMERA2_CLK		0x8080 /* Camera 2 Clock */
+#define CAM_CLK_EN		(1 << 1)
+#define MIPI_CLK		(1 << 0)
+#define HDPLL_CLK		(0 << 0)
+
+static void pch_enable_isclk(void)
+{
+	pcr_or32(PID_ISCLK, CAMERA1_CLK, CAM_CLK_EN | MIPI_CLK);
+	pcr_or32(PID_ISCLK, CAMERA2_CLK, CAM_CLK_EN | MIPI_CLK);
+}
+
+static void pch_handle_sideband(config_t *config)
+{
+	if (config->pch_isclk)
+		pch_enable_isclk();
+}
+
+static void pch_finalize(void)
+{
+	config_t *config;
+
+	/* TCO Lock down */
+	tco_lockdown();
+
+	/* TODO: Add Thermal Configuration */
+
+	/*
+	 * Disable ACPI PM timer based on dt policy
+	 *
+	 * Disabling ACPI PM timer is necessary for XTAL OSC shutdown.
+	 * Disabling ACPI PM timer also switches off TCO
+	 */
+	config = config_of_soc();
+	if (config->PmTimerDisabled)
+		pmc_disable_acpi_timer();
+
+	/* Disable XTAL shutdown qualification for low power idle. */
+	if (config->s0ix_enable)
+		pmc_ignore_xtal_shutdown();
+
+	pch_handle_sideband(config);
+
+	pmc_clear_pmcon_sts();
+}
+
+static void tbt_finalize(void)
+{
+	int i;
+	const struct device *dev;
+
+	/* Disable Thunderbolt PCIe root ports bus master */
+	for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
+		dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
+		if (dev)
+			pci_dev_disable_bus_master(dev);
+	}
+}
+
+static void soc_finalize(void *unused)
+{
+	printk(BIOS_DEBUG, "Finalizing chipset.\n");
+
+	pch_finalize();
+	apm_control(APM_CNT_FINALIZE);
+	tbt_finalize();
+
+	/* Indicate finalize step with post code */
+	post_code(POST_OS_BOOT);
+}
+
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, soc_finalize, NULL);
+BOOT_STATE_INIT_ENTRY(BS_PAYLOAD_LOAD, BS_ON_EXIT, soc_finalize, NULL);