diff --git a/src/device/pci_device.c b/src/device/pci_device.c
index 4c5a814..1d998ca 100644
--- a/src/device/pci_device.c
+++ b/src/device/pci_device.c
@@ -1054,6 +1054,19 @@
 }
 
 /**
+ * Test for match between romstage and ramstage device instance.
+ *
+ * @param dev Pointer to the device structure.
+ * @param sdev Simple device model identifier, created with PCI_DEV().
+ * @return Non-zero if bus:dev.fn of device matches.
+ */
+unsigned int pci_match_simple_dev(device_t dev, pci_devfn_t sdev)
+{
+	return dev->bus->secondary == PCI_DEV2SEGBUS(sdev) &&
+			dev->path.pci.devfn == PCI_DEV2DEVFN(sdev);
+}
+
+/**
  * Scan a PCI bus.
  *
  * Determine the existence of devices and bridges on a PCI bus. If there are