diff --git a/src/soc/intel/common/block/acpi/pep.c b/src/soc/intel/common/block/acpi/pep.c
new file mode 100644
index 0000000..9b15bf3
--- /dev/null
+++ b/src/soc/intel/common/block/acpi/pep.c
@@ -0,0 +1,122 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpigen.h>
+#include <console/console.h>
+#include <intelblocks/acpi.h>
+#include <types.h>
+
+#define LPI_S0_HELPER_UUID		"c4eb40a0-6cd2-11e2-bcfd-0800200c9a66"
+#define SYSTEM_POWER_MANAGEMENT_HID	"INT33A1"
+#define SYSTEM_POWER_MANAGEMENT_CID	"PNP0D80"
+#define EC_S0IX_HOOK			"\\_SB.PCI0.LPCB.EC0.S0IX"
+#define MAINBOARD_HOOK			"\\_SB.MS0X"
+#define ENABLE_PM_BITS_HOOK		"\\_SB.PCI0.EGPM"
+#define RESTORE_PM_BITS_HOOK		"\\_SB.PCI0.RGPM"
+#define LPI_STATES_ALL			0xff
+#define MIN_DEVICE_STATE		ACPI_DEVICE_SLEEP_D0
+#define PEPD_SCOPE			"\\_SB.PCI0"
+
+/*
+ * For now there is only one disabled non-existent device, because Windows
+ * expects at least one device and crashes without it with a bluescreen
+ * (`INTERNAL_POWER_ERROR`). Returning an empty package does not work.
+ */
+static void lpi_get_constraints(void *unused)
+{
+	/*
+	 * Return (Package() {
+	 *     Package() { "\NULL", 0,
+	 *         Package() { 0,
+	 *             Package() { 0xff, 0 }}}})
+	 */
+	acpigen_emit_byte(RETURN_OP);
+	acpigen_write_package(1);
+	{
+		acpigen_write_package(3);
+		{
+			acpigen_emit_namestring("\\NULL");
+			acpigen_write_integer(0); /* device disabled */
+			acpigen_write_package(2);
+			{
+				acpigen_write_integer(0); /* revision */
+				acpigen_write_package(2);
+				{
+					acpigen_write_integer(LPI_STATES_ALL);
+					acpigen_write_integer(MIN_DEVICE_STATE);
+				}
+				acpigen_write_package_end();
+			}
+			acpigen_write_package_end();
+		}
+		acpigen_write_package_end();
+	}
+	acpigen_write_package_end();
+}
+
+static void lpi_s0ix_entry(void *unused)
+{
+	/* Inform the EC */
+	acpigen_write_if_cond_ref_of(EC_S0IX_HOOK);
+	acpigen_emit_namestring(EC_S0IX_HOOK);
+	acpigen_write_integer(1);
+	acpigen_write_if_end();
+
+	/* Provide a board level S0ix hook */
+	acpigen_write_if_cond_ref_of(MAINBOARD_HOOK);
+	acpigen_emit_namestring(MAINBOARD_HOOK);
+	acpigen_write_integer(1);
+	acpigen_write_if_end();
+
+	/* Save the current PM bits then enable GPIO PM with
+	   MISCCFG_GPIO_PM_CONFIG_BITS */
+	acpigen_write_if_cond_ref_of(ENABLE_PM_BITS_HOOK);
+	acpigen_emit_namestring(ENABLE_PM_BITS_HOOK);
+	acpigen_write_if_end();
+}
+
+static void lpi_s0ix_exit(void *unused)
+{
+	/* Inform the EC */
+	acpigen_write_if_cond_ref_of(EC_S0IX_HOOK);
+	acpigen_emit_namestring(EC_S0IX_HOOK);
+	acpigen_write_integer(0);
+	acpigen_write_if_end();
+
+	/* Provide a board level S0ix hook */
+	acpigen_write_if_cond_ref_of(MAINBOARD_HOOK);
+	acpigen_emit_namestring(MAINBOARD_HOOK);
+	acpigen_write_integer(0);
+	acpigen_write_if_end();
+
+	/* Restore GPIO all Community PM */
+	acpigen_write_if_cond_ref_of(RESTORE_PM_BITS_HOOK);
+	acpigen_emit_namestring(RESTORE_PM_BITS_HOOK);
+	acpigen_write_if_end();
+}
+
+static void (*lpi_s0_helpers[])(void *) = {
+	NULL,			/* enumerate functions (autogenerated) */
+	lpi_get_constraints,	/* get device constraints */
+	NULL,			/* get crash dump device */
+	NULL,			/* display off notify */
+	NULL,			/* display on notify */
+	lpi_s0ix_entry,		/* s0ix entry */
+	lpi_s0ix_exit,		/* s0ix exit */
+};
+
+void generate_acpi_power_engine(void)
+{
+	acpigen_write_scope(PEPD_SCOPE);
+	acpigen_write_device("PEPD");
+
+	acpigen_write_name_string("_HID", SYSTEM_POWER_MANAGEMENT_HID);
+	acpigen_write_name("_CID");
+	acpigen_emit_eisaid(SYSTEM_POWER_MANAGEMENT_CID);
+
+	acpigen_write_dsm(LPI_S0_HELPER_UUID, lpi_s0_helpers, ARRAY_SIZE(lpi_s0_helpers), NULL);
+
+	acpigen_write_device_end();
+	acpigen_write_scope_end();
+
+	printk(BIOS_INFO, PEPD_SCOPE ".PEPD: Intel Power Engine Plug-in\n");
+}