diff --git a/devicemodel/Makefile b/devicemodel/Makefile
index 9486f46ae..6d1826c20 100644
--- a/devicemodel/Makefile
+++ b/devicemodel/Makefile
@@ -153,6 +153,7 @@ SRCS += core/timer.c
 
 # arch
 SRCS += arch/x86/pm.c
+SRCS += arch/x86/power_button.c
 
 # log
 SRCS += log/log.c
diff --git a/devicemodel/arch/x86/pm.c b/devicemodel/arch/x86/pm.c
index ab9ce18f7..055cbc624 100644
--- a/devicemodel/arch/x86/pm.c
+++ b/devicemodel/arch/x86/pm.c
@@ -33,12 +33,6 @@
 #include <signal.h>
 #include <stdbool.h>
 #include <pthread.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <linux/input.h>
-#include <dirent.h>
-#include <string.h>
-#include <stdlib.h>
 
 #include "vmmapi.h"
 #include "acpi.h"
@@ -48,18 +42,10 @@
 #include "lpc.h"
 #include "monitor.h"
 
-#define POWER_BUTTON_NAME	"power_button"
-#define POWER_BUTTON_ACPI_DRV	"/sys/bus/acpi/drivers/button/LNXPWRBN:00/"
-#define POWER_BUTTON_INPUT_DIR POWER_BUTTON_ACPI_DRV"input"
-#define POWER_BUTTON_PNP0C0C_DRV "/sys/bus/acpi/drivers/button/PNP0C0C:00/"
-#define POWER_BUTTON_PNP0C0C_DIR POWER_BUTTON_PNP0C0C_DRV"input"
 static pthread_mutex_t pm_lock = PTHREAD_MUTEX_INITIALIZER;
 static struct mevent *power_button;
 static sig_t old_power_handler;
 
-static struct mevent *input_evt0;
-static int pwrbtn_fd = -1;
-static bool monitor_run;
 /*
  * Reset Control register at I/O port 0xcf9.  Bit 2 forces a system
  * reset when it transitions from 0 to 1.  Bit 1 selects the type of
@@ -236,8 +222,8 @@ pm1_enable_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
 INOUT_PORT(pm1_status, PM1A_EVT_ADDR, IOPORT_F_INOUT, pm1_status_handler);
 INOUT_PORT(pm1_enable, PM1A_EVT_ADDR + 2, IOPORT_F_INOUT, pm1_enable_handler);
 
-static void
-power_button_press_emulation(struct vmctx *ctx)
+void
+inject_power_button_event(struct vmctx *ctx)
 {
 	printf("%s", "press power button\n");
 	pthread_mutex_lock(&pm_lock);
@@ -252,25 +238,7 @@ static void
 power_button_handler(int signal, enum ev_type type, void *arg)
 {
 	if (arg)
-		power_button_press_emulation(arg);
-}
-
-static void
-input_event0_handler(int fd, enum ev_type type, void *arg)
-{
-	struct input_event ev;
-	int rc;
-
-	rc = read(fd, &ev, sizeof(ev));
-	if (rc < 0 || rc != sizeof(ev))
-		return;
-
-	/*
-	 * The input key defines in input-event-codes.h
-	 * KEY_POWER 116 SC System Power Down
-	 */
-	if (ev.code == KEY_POWER && ev.value == 1)
-		power_button_press_emulation(arg);
+		inject_power_button_event(arg);
 }
 
 static int
@@ -309,150 +277,6 @@ pm1_control_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
 INOUT_PORT(pm1_control, VIRTUAL_PM1A_CNT_ADDR, IOPORT_F_INOUT, pm1_control_handler);
 SYSRES_IO(PM1A_EVT_ADDR, 8);
 
-static int
-vm_stop_handler(void *arg)
-{
-	if (!arg)
-		return -EINVAL;
-
-	power_button_press_emulation(arg);
-	return 0;
-}
-
-static int
-vm_suspend_handler(void *arg)
-{
-	/*
-	 * Invoke vm_stop_handler directly in here since suspend of UOS is
-	 * set by UOS power button setting.
-	 */
-	return vm_stop_handler(arg);
-}
-
-static struct monitor_vm_ops vm_ops = {
-	.stop = vm_stop_handler,
-	.suspend = vm_suspend_handler,
-};
-
-static int
-input_dir_filter(const struct dirent *dir)
-{
-	return !strncmp(dir->d_name, "input", 5);
-}
-
-static int
-event_dir_filter(const struct dirent *dir)
-{
-	return !strncmp(dir->d_name, "event", 5);
-}
-
-static int
-open_power_button_input_device(const char *drv, const char *dir)
-{
-	struct dirent **input_dirs = NULL;
-	struct dirent **event_dirs = NULL;
-	int ninput = 0;
-	int nevent = 0;
-	char path[256] = {0};
-	char name[256] = {0};
-	int rc, fd;
-
-	if (access(drv, F_OK) != 0)
-		return -1;
-	/*
-	 * Scan path to get inputN
-	 * path is /sys/bus/acpi/drivers/button/LNXPWRBN:00/input
-	 */
-	ninput = scandir(dir, &input_dirs, input_dir_filter,
-			alphasort);
-	if (ninput < 0) {
-		fprintf(stderr, "failed to scan power button %s\n",
-				dir);
-		goto err;
-	} else if (ninput == 1) {
-		rc = snprintf(path, sizeof(path), "%s/%s",
-				dir, input_dirs[0]->d_name);
-		if (rc < 0 || rc >= sizeof(path)) {
-			fprintf(stderr, "failed to set power button path %d\n",
-					rc);
-			goto err_input;
-		}
-
-		/*
-		 * Scan path to get eventN
-		 * path is /sys/bus/acpi/drivers/button/LNXPWRBN:00/input/inputN
-		 */
-		nevent = scandir(path, &event_dirs, event_dir_filter,
-				alphasort);
-		if (nevent < 0) {
-			fprintf(stderr, "failed to get power button event %s\n",
-					path);
-			goto err_input;
-		} else if (nevent == 1) {
-
-			/* Get the power button input event name */
-			rc = snprintf(name, sizeof(name), "/dev/input/%s",
-					event_dirs[0]->d_name);
-			if (rc < 0 || rc >= sizeof(name)) {
-				fprintf(stderr, "power button error %d\n", rc);
-				goto err_input;
-			}
-		} else {
-			fprintf(stderr, "power button event number error %d\n",
-					nevent);
-			goto err_event;
-		}
-	} else {
-		fprintf(stderr, "power button input number error %d\n", nevent);
-		goto err_input;
-	}
-
-	/* Open the input device */
-	fd = open(name, O_RDONLY);
-	if (fd > 0)
-		printf("Watching power button on %s\n", name);
-
-	while (nevent--)
-		free(event_dirs[nevent]);
-	free(event_dirs);
-	while (ninput--)
-		free(input_dirs[ninput]);
-	free(input_dirs);
-	return fd;
-
-err_event:
-	while (nevent--)
-		free(event_dirs[nevent]);
-	free(event_dirs);
-
-err_input:
-	while (ninput--)
-		free(input_dirs[ninput]);
-	free(input_dirs);
-
-err:
-	return -1;
-}
-
-static int
-open_native_power_button()
-{
-	int fd;
-
-	/*
-	 * Open fixed power button firstly, if it can't be opened
-	 * try to open control method power button.
-	 */
-	fd = open_power_button_input_device(POWER_BUTTON_ACPI_DRV,
-			POWER_BUTTON_INPUT_DIR);
-	if (fd < 0)
-		return open_power_button_input_device(
-				POWER_BUTTON_PNP0C0C_DRV,
-				POWER_BUTTON_PNP0C0C_DIR);
-	else
-		return fd;
-}
-
 /*
  * ACPI SMI Command Register
  *
@@ -486,29 +310,6 @@ smi_cmd_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
 				power_button_handler, ctx, NULL, NULL);
 			old_power_handler = signal(SIGTERM, SIG_IGN);
 		}
-		if (input_evt0 == NULL) {
-
-			pwrbtn_fd = open_native_power_button();
-			if (pwrbtn_fd < 0)
-				fprintf(stderr, "open power button error=%d\n",
-						errno);
-			else
-				input_evt0 = mevent_add(pwrbtn_fd, EVF_READ,
-					input_event0_handler, ctx, NULL, NULL);
-		}
-
-		/*
-		 * Suspend or shutdown UOS by acrnctl suspend and
-		 * stop command.
-		 */
-		if (monitor_run == false) {
-			if (monitor_register_vm_ops(&vm_ops, ctx,
-						POWER_BUTTON_NAME) < 0)
-				fprintf(stderr,
-				"failed to register vm ops for power button\n");
-			else
-				monitor_run = true;
-		}
 		break;
 	case ACPI_DISABLE:
 		pm1_control &= ~VIRTUAL_PM1A_SCI_EN;
@@ -517,11 +318,6 @@ smi_cmd_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
 			power_button = NULL;
 			signal(SIGTERM, old_power_handler);
 		}
-		if (input_evt0 != NULL) {
-			mevent_delete_close(input_evt0);
-			input_evt0 = NULL;
-			pwrbtn_fd = -1;
-		}
 		break;
 	}
 	pthread_mutex_unlock(&pm_lock);
diff --git a/devicemodel/arch/x86/power_button.c b/devicemodel/arch/x86/power_button.c
new file mode 100644
index 000000000..97477ef8c
--- /dev/null
+++ b/devicemodel/arch/x86/power_button.c
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2019 Intel Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <stdio.h>
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <linux/input.h>
+#include <dirent.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "vmmapi.h"
+#include "acpi.h"
+#include "mevent.h"
+#include "monitor.h"
+
+#define POWER_BUTTON_NAME	"power_button"
+#define POWER_BUTTON_ACPI_DRV	"/sys/bus/acpi/drivers/button/LNXPWRBN:00/"
+#define POWER_BUTTON_INPUT_DIR POWER_BUTTON_ACPI_DRV"input"
+#define POWER_BUTTON_PNP0C0C_DRV "/sys/bus/acpi/drivers/button/PNP0C0C:00/"
+#define POWER_BUTTON_PNP0C0C_DIR POWER_BUTTON_PNP0C0C_DRV"input"
+
+static struct mevent *input_evt0;
+static int pwrbtn_fd = -1;
+static bool monitor_run;
+
+static void
+input_event0_handler(int fd, enum ev_type type, void *arg)
+{
+	struct input_event ev;
+	int rc;
+
+	rc = read(fd, &ev, sizeof(ev));
+	if (rc < 0 || rc != sizeof(ev))
+		return;
+
+	/*
+	 * The input key defines in input-event-codes.h
+	 * KEY_POWER 116 SC System Power Down
+	 */
+	if (ev.code == KEY_POWER && ev.value == 1)
+		inject_power_button_event(arg);
+}
+
+static int
+vm_stop_handler(void *arg)
+{
+	if (!arg)
+		return -EINVAL;
+
+	inject_power_button_event(arg);
+	return 0;
+}
+
+static int
+vm_suspend_handler(void *arg)
+{
+	/*
+	 * Invoke vm_stop_handler directly in here since suspend of UOS is
+	 * set by UOS power button setting.
+	 */
+	return vm_stop_handler(arg);
+}
+
+static struct monitor_vm_ops vm_ops = {
+	.stop = vm_stop_handler,
+	.suspend = vm_suspend_handler,
+};
+
+static int
+input_dir_filter(const struct dirent *dir)
+{
+	return !strncmp(dir->d_name, "input", 5);
+}
+
+static int
+event_dir_filter(const struct dirent *dir)
+{
+	return !strncmp(dir->d_name, "event", 5);
+}
+
+static int
+open_power_button_input_device(const char *drv, const char *dir)
+{
+	struct dirent **input_dirs = NULL;
+	struct dirent **event_dirs = NULL;
+	int ninput = 0;
+	int nevent = 0;
+	char path[256] = {0};
+	char name[256] = {0};
+	int rc, fd;
+
+	if (access(drv, F_OK) != 0)
+		return -1;
+	/*
+	 * Scan path to get inputN
+	 * path is /sys/bus/acpi/drivers/button/LNXPWRBN:00/input
+	 */
+	ninput = scandir(dir, &input_dirs, input_dir_filter,
+			alphasort);
+	if (ninput < 0) {
+		fprintf(stderr, "failed to scan power button %s\n",
+				dir);
+		goto err;
+	} else if (ninput == 1) {
+		rc = snprintf(path, sizeof(path), "%s/%s",
+				dir, input_dirs[0]->d_name);
+		if (rc < 0 || rc >= sizeof(path)) {
+			fprintf(stderr, "failed to set power button path %d\n",
+					rc);
+			goto err_input;
+		}
+
+		/*
+		 * Scan path to get eventN
+		 * path is /sys/bus/acpi/drivers/button/LNXPWRBN:00/input/inputN
+		 */
+		nevent = scandir(path, &event_dirs, event_dir_filter,
+				alphasort);
+		if (nevent < 0) {
+			fprintf(stderr, "failed to get power button event %s\n",
+					path);
+			goto err_input;
+		} else if (nevent == 1) {
+
+			/* Get the power button input event name */
+			rc = snprintf(name, sizeof(name), "/dev/input/%s",
+					event_dirs[0]->d_name);
+			if (rc < 0 || rc >= sizeof(name)) {
+				fprintf(stderr, "power button error %d\n", rc);
+				goto err_input;
+			}
+		} else {
+			fprintf(stderr, "power button event number error %d\n",
+					nevent);
+			goto err_event;
+		}
+	} else {
+		fprintf(stderr, "power button input number error %d\n", nevent);
+		goto err_input;
+	}
+
+	/* Open the input device */
+	fd = open(name, O_RDONLY);
+	if (fd > 0)
+		printf("Watching power button on %s\n", name);
+
+	while (nevent--)
+		free(event_dirs[nevent]);
+	free(event_dirs);
+	while (ninput--)
+		free(input_dirs[ninput]);
+	free(input_dirs);
+	return fd;
+
+err_event:
+	while (nevent--)
+		free(event_dirs[nevent]);
+	free(event_dirs);
+
+err_input:
+	while (ninput--)
+		free(input_dirs[ninput]);
+	free(input_dirs);
+
+err:
+	return -1;
+}
+
+static int
+open_native_power_button()
+{
+	int fd;
+
+	/*
+	 * Open fixed power button firstly, if it can't be opened
+	 * try to open control method power button.
+	 */
+	fd = open_power_button_input_device(POWER_BUTTON_ACPI_DRV,
+			POWER_BUTTON_INPUT_DIR);
+	if (fd < 0)
+		return open_power_button_input_device(
+				POWER_BUTTON_PNP0C0C_DRV,
+				POWER_BUTTON_PNP0C0C_DIR);
+	else
+		return fd;
+}
+
+void
+power_button_init(struct vmctx *ctx)
+{
+	if (input_evt0 == NULL) {
+		pwrbtn_fd = open_native_power_button();
+		if (pwrbtn_fd < 0)
+			fprintf(stderr, "open power button error=%d\n",
+					errno);
+		else
+			input_evt0 = mevent_add(pwrbtn_fd, EVF_READ,
+					input_event0_handler, ctx, NULL, NULL);
+	}
+
+	/*
+	 * Suspend or shutdown UOS by acrnctl suspend and
+	 * stop command.
+	 */
+	if (monitor_run == false) {
+		if (monitor_register_vm_ops(&vm_ops, ctx,
+					POWER_BUTTON_NAME) < 0)
+			fprintf(stderr,
+					"failed to register vm ops for power button\n");
+		else
+			monitor_run = true;
+	}
+}
+
+void
+power_button_deinit(struct vmctx *ctx)
+{
+	if (input_evt0 != NULL) {
+		mevent_delete_close(input_evt0);
+		input_evt0 = NULL;
+		pwrbtn_fd = -1;
+	}
+}
diff --git a/devicemodel/include/acpi.h b/devicemodel/include/acpi.h
index 43856583f..775a71d46 100644
--- a/devicemodel/include/acpi.h
+++ b/devicemodel/include/acpi.h
@@ -59,5 +59,8 @@ void	dsdt_unindent(int levels);
 void	sci_init(struct vmctx *ctx);
 void	pm_write_dsdt(struct vmctx *ctx, int ncpu);
 void	pm_backto_wakeup(struct vmctx *ctx);
+void	inject_power_button_event(struct vmctx *ctx);
+void	power_button_init(struct vmctx *ctx);
+void	power_button_deinit(struct vmctx *ctx);
 
 #endif /* _ACPI_H_ */