diff --git a/configure.ac b/configure.ac
index da02696..52efb04 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,6 +75,12 @@
     AC_SUBST([OESDK_TESTCASE_FLAGS], [$testcase_flags])
 )
 
+AC_ARG_VAR(PCI_PHYSICAL_ADDRESS, [The physical address to use on the BMC for the PCI-to-AHB Bridge.])
+AS_IF([test "x$PCI_PHYSICAL_ADDRESS" == "x"],
+    [AC_DEFINE(PCI_PHYSICAL_ADDRESS, [0], [Default address to 0.])],
+    [AC_DEFINE(PCI_PHYSICAL_ADDRESS, [$PCI_PHYSICAL_ADDRESS], [Value for PCI-to-AHB bridge set.])]
+)
+
 # Create configured output
 AC_CONFIG_FILES([Makefile test/Makefile])
 AC_OUTPUT