diff --git a/src/northbridge/intel/gm45/Kconfig b/src/northbridge/intel/gm45/Kconfig
index 58942f0..06883e4 100644
--- a/src/northbridge/intel/gm45/Kconfig
+++ b/src/northbridge/intel/gm45/Kconfig
@@ -43,4 +43,13 @@
 config INTEL_GMA_BCLM_OFFSET
 	default 0x61256
 
+config FIXED_MCHBAR_MMIO_BASE
+	default 0xfed14000
+
+config FIXED_DMIBAR_MMIO_BASE
+	default 0xfed18000
+
+config FIXED_EPBAR_MMIO_BASE
+	default 0xfed19000
+
 endif