diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index c53da22043..68e79ad4a1 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -885,9 +885,6 @@ void setup_uma_memory(void)
 		    __func__, uma_memory_size, uma_memory_base);
 
 	/* TODO: TOP_MEM2 */
-#else
-	uma_memory_size = 0x8000000;	/* 128M recommended UMA */
-	uma_memory_base = 0x38000000;	/* 1GB  system memory supposed */
 #endif
 }
 
diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c
index c4a8acd643..21f2808465 100644
--- a/src/northbridge/amd/amdk8/northbridge.c
+++ b/src/northbridge/amd/amdk8/northbridge.c
@@ -879,9 +879,6 @@ void setup_uma_memory(void)
 		    __func__, uma_memory_size, uma_memory_base);
 
 	/* TODO: TOP_MEM2 */
-#else
-	uma_memory_size = 0x8000000;	/* 128M recommended UMA */
-	uma_memory_base = 0x38000000;	/* 1GB  system memory supposed */
 #endif
 }
 
diff --git a/src/southbridge/amd/rs690/cmn.c b/src/southbridge/amd/rs690/cmn.c
index 68c46e9728..004cf78898 100644
--- a/src/southbridge/amd/rs690/cmn.c
+++ b/src/southbridge/amd/rs690/cmn.c
@@ -316,7 +316,13 @@ u8 PcieTrainPort(device_t nb_dev, device_t dev, u32 port)
 void rs690_set_tom(device_t nb_dev)
 {
 	/* set TOM */
+#if CONFIG_GFXUMA
 	pci_write_config32(nb_dev, 0x90, uma_memory_base);
 	nbmc_write_index(nb_dev, 0x1e, uma_memory_base);
+#else
+	/* 1GB  system memory supposed */
+	pci_write_config32(nb_dev, 0x90, 0x38000000);
+	nbmc_write_index(nb_dev, 0x1e, 0x38000000);
+#endif
 }
 
diff --git a/src/southbridge/amd/rs780/cmn.c b/src/southbridge/amd/rs780/cmn.c
index 5c72a04227..30da675ea0 100644
--- a/src/southbridge/amd/rs780/cmn.c
+++ b/src/southbridge/amd/rs780/cmn.c
@@ -357,8 +357,14 @@ u8 PcieTrainPort(device_t nb_dev, device_t dev, u32 port)
 void rs780_set_tom(device_t nb_dev)
 {
 	/* set TOM */
+#if CONFIG_GFXUMA
 	pci_write_config32(nb_dev, 0x90, uma_memory_base);
 	//nbmc_write_index(nb_dev, 0x1e, uma_memory_base);
+#else
+	/* 1GB  system memory supposed */
+	pci_write_config32(nb_dev, 0x90, 0x38000000);
+	//nbmc_write_index(nb_dev, 0x1e, 0x38000000);
+#endif
 }
 
 // extract single bit