diff --git a/tools/pci.hpp b/tools/pci.hpp
index 7f0cfb7..3aeae7b 100644
--- a/tools/pci.hpp
+++ b/tools/pci.hpp
@@ -84,10 +84,14 @@
   public:
     explicit NuvotonPciBridge(const PciAccess* pci) :
         PciAccessBridge(&match, bar, dataOffset, dataLength, pci)
-    {}
+    {
+        enableBridge();
+    }
 
     ~NuvotonPciBridge()
-    {}
+    {
+        disableBridge();
+    }
 
   private:
     static constexpr std::uint32_t vid = 0x1050;
@@ -103,6 +107,9 @@
 
     static constexpr std::size_t dataOffset = 0x0;
     static constexpr std::size_t dataLength = 0x4000;
+
+    void enableBridge();
+    void disableBridge();
 };
 
 class AspeedPciBridge : public PciAccessBridge