diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 76ac8b2035..7efef4f364 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -45,11 +45,11 @@
 #include "sysemu/kvm.h"
 #include "hw/kvm/clock.h"
 #include "hw/sysbus.h"
+#include "hw/i2c/i2c.h"
 #include "hw/i2c/smbus_eeprom.h"
 #include "hw/xen/xen-x86.h"
 #include "exec/memory.h"
 #include "hw/acpi/acpi.h"
-#include "hw/acpi/piix4.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "sysemu/xen.h"
@@ -84,6 +84,7 @@ static void pc_init1(MachineState *machine,
     MemoryRegion *system_io = get_system_io();
     PCIBus *pci_bus;
     ISABus *isa_bus;
+    Object *piix4_pm;
     int piix3_devfn = -1;
     qemu_irq smi_irq;
     GSIState *gsi_state;
@@ -221,6 +222,13 @@ static void pc_init1(MachineState *machine,
         pci_dev = pci_new_multifunction(-1, true, type);
         object_property_set_bool(OBJECT(pci_dev), "has-usb",
                                  machine_usb(machine), &error_abort);
+        object_property_set_bool(OBJECT(pci_dev), "has-acpi",
+                                 x86_machine_is_acpi_enabled(x86ms),
+                                 &error_abort);
+        qdev_prop_set_uint32(DEVICE(pci_dev), "smb_io_base", 0xb100);
+        object_property_set_bool(OBJECT(pci_dev), "smm-enabled",
+                                 x86_machine_is_smm_enabled(x86ms),
+                                 &error_abort);
         pci_realize_and_unref(pci_dev, pci_bus, &error_fatal);
         piix3 = PIIX3_PCI_DEVICE(pci_dev);
         piix3->pic = x86ms->gsi;
@@ -228,8 +236,10 @@ static void pc_init1(MachineState *machine,
         isa_bus = ISA_BUS(qdev_get_child_bus(DEVICE(piix3), "isa.0"));
         rtc_state = ISA_DEVICE(object_resolve_path_component(OBJECT(pci_dev),
                                                              "rtc"));
+        piix4_pm = object_resolve_path_component(OBJECT(pci_dev), "pm");
     } else {
         pci_bus = NULL;
+        piix4_pm = NULL;
         isa_bus = isa_bus_new(NULL, get_system_memory(), system_io,
                               &error_abort);
 
@@ -299,15 +309,8 @@ static void pc_init1(MachineState *machine,
     }
 #endif
 
-    if (pcmc->pci_enabled && x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
-        PCIDevice *piix4_pm;
-
+    if (piix4_pm) {
         smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);
-        piix4_pm = pci_new(piix3_devfn + 3, TYPE_PIIX4_PM);
-        qdev_prop_set_uint32(DEVICE(piix4_pm), "smb_io_base", 0xb100);
-        qdev_prop_set_bit(DEVICE(piix4_pm), "smm-enabled",
-                          x86_machine_is_smm_enabled(x86ms));
-        pci_realize_and_unref(piix4_pm, pci_bus, &error_fatal);
 
         qdev_connect_gpio_out(DEVICE(piix4_pm), 0, x86ms->gsi[9]);
         qdev_connect_gpio_out_named(DEVICE(piix4_pm), "smi-irq", 0, smi_irq);
@@ -321,7 +324,7 @@ static void pc_init1(MachineState *machine,
                                  object_property_allow_set_link,
                                  OBJ_PROP_LINK_STRONG);
         object_property_set_link(OBJECT(machine), PC_MACHINE_ACPI_DEVICE_PROP,
-                                 OBJECT(piix4_pm), &error_abort);
+                                 piix4_pm, &error_abort);
     }
 
     if (machine->nvdimms_state->is_enabled) {
diff --git a/hw/isa/Kconfig b/hw/isa/Kconfig
index f02eca3c3e..f10daa26bc 100644
--- a/hw/isa/Kconfig
+++ b/hw/isa/Kconfig
@@ -33,6 +33,7 @@ config PC87312
 
 config PIIX3
     bool
+    select ACPI_PIIX4
     select I8257
     select ISA_BUS
     select MC146818RTC
diff --git a/hw/isa/piix3.c b/hw/isa/piix3.c
index 27052a5546..3bd25013ee 100644
--- a/hw/isa/piix3.c
+++ b/hw/isa/piix3.c
@@ -330,6 +330,17 @@ static void pci_piix3_realize(PCIDevice *dev, Error **errp)
             return;
         }
     }
+
+    /* Power Management */
+    if (d->has_acpi) {
+        object_initialize_child(OBJECT(d), "pm", &d->pm, TYPE_PIIX4_PM);
+        qdev_prop_set_int32(DEVICE(&d->pm), "addr", dev->devfn + 3);
+        qdev_prop_set_uint32(DEVICE(&d->pm), "smb_io_base", d->smb_io_base);
+        qdev_prop_set_bit(DEVICE(&d->pm), "smm-enabled", d->smm_enabled);
+        if (!qdev_realize(DEVICE(&d->pm), BUS(pci_bus), errp)) {
+            return;
+        }
+    }
 }
 
 static void build_pci_isa_aml(AcpiDevAmlIf *adev, Aml *scope)
@@ -353,7 +364,10 @@ static void pci_piix3_init(Object *obj)
 }
 
 static Property pci_piix3_props[] = {
+    DEFINE_PROP_UINT32("smb_io_base", PIIX3State, smb_io_base, 0),
+    DEFINE_PROP_BOOL("has-acpi", PIIX3State, has_acpi, true),
     DEFINE_PROP_BOOL("has-usb", PIIX3State, has_usb, true),
+    DEFINE_PROP_BOOL("smm-enabled", PIIX3State, smm_enabled, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
index 5367917182..1c291cc954 100644
--- a/include/hw/southbridge/piix.h
+++ b/include/hw/southbridge/piix.h
@@ -14,6 +14,7 @@
 
 #include "hw/pci/pci.h"
 #include "qom/object.h"
+#include "hw/acpi/piix4.h"
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/usb/hcd-uhci.h"
 
@@ -56,6 +57,9 @@ struct PIIXState {
 
     RTCState rtc;
     UHCIState uhci;
+    PIIX4PMState pm;
+
+    uint32_t smb_io_base;
 
     /* Reset Control Register contents */
     uint8_t rcr;
@@ -63,7 +67,9 @@ struct PIIXState {
     /* IO memory region for Reset Control Register (PIIX_RCR_IOPORT) */
     MemoryRegion rcr_mem;
 
+    bool has_acpi;
     bool has_usb;
+    bool smm_enabled;
 };
 typedef struct PIIXState PIIX3State;
 
