+/**\r
+ Load a legacy PC-AT OpROM for VGA controller.\r
+\r
+ @param Private Driver private data.\r
+\r
+ @retval EFI_SUCCESS Legacy ROM successfully installed for this device.\r
+ @retval EFI_DEVICE_ERROR No VGA device handle found, or native EFI video\r
+ driver cannot be successfully disconnected, or VGA\r
+ thunk driver cannot be successfully connected.\r
+\r
+**/\r
+EFI_STATUS\r
+LegacyBiosInstallVgaRom (\r
+ IN LEGACY_BIOS_INSTANCE *Private\r
+ );\r
+\r