diff --git a/board/atmel/atngw100/atngw100.c b/board/atmel/atngw100/atngw100.c
index 004d8da..4580f55 100644
--- a/board/atmel/atngw100/atngw100.c
+++ b/board/atmel/atngw100/atngw100.c
@@ -75,13 +75,11 @@
 	unsigned long actual_size;
 	void *sdram_base;
 
-	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+	sdram_base = uncached(EBI_SDRAM_BASE);
 
 	expected_size = sdram_init(sdram_base, &sdram_config);
 	actual_size = get_ram_size(sdram_base, expected_size);
 
-	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
-
 	if (expected_size != actual_size)
 		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
diff --git a/board/atmel/atstk1000/atstk1000.c b/board/atmel/atstk1000/atstk1000.c
index c36cb57..d91d594 100644
--- a/board/atmel/atstk1000/atstk1000.c
+++ b/board/atmel/atstk1000/atstk1000.c
@@ -97,13 +97,11 @@
 	unsigned long actual_size;
 	void *sdram_base;
 
-	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+	sdram_base = uncached(EBI_SDRAM_BASE);
 
 	expected_size = sdram_init(sdram_base, &sdram_config);
 	actual_size = get_ram_size(sdram_base, expected_size);
 
-	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
-
 	if (expected_size != actual_size)
 		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
diff --git a/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c b/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
index 8af680f..d2843c9 100644
--- a/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
+++ b/board/earthlcd/favr-32-ezkit/favr-32-ezkit.c
@@ -68,13 +68,11 @@
 	unsigned long actual_size;
 	void *sdram_base;
 
-	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+	sdram_base = uncached(EBI_SDRAM_BASE);
 
 	expected_size = sdram_init(sdram_base, &sdram_config);
 	actual_size = get_ram_size(sdram_base, expected_size);
 
-	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
-
 	if (expected_size != actual_size)
 		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
diff --git a/board/mimc/mimc200/mimc200.c b/board/mimc/mimc200/mimc200.c
index cc0f137..9940669 100644
--- a/board/mimc/mimc200/mimc200.c
+++ b/board/mimc/mimc200/mimc200.c
@@ -153,13 +153,11 @@
 	unsigned long actual_size;
 	void *sdram_base;
 
-	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+	sdram_base = uncached(EBI_SDRAM_BASE);
 
 	expected_size = sdram_init(sdram_base, &sdram_config);
 	actual_size = get_ram_size(sdram_base, expected_size);
 
-	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
-
 	if (expected_size != actual_size)
 		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 				actual_size >> 20, expected_size >> 20);
diff --git a/board/miromico/hammerhead/hammerhead.c b/board/miromico/hammerhead/hammerhead.c
index 8b3e22c..5ab999e 100644
--- a/board/miromico/hammerhead/hammerhead.c
+++ b/board/miromico/hammerhead/hammerhead.c
@@ -80,13 +80,11 @@
 	unsigned long actual_size;
 	void *sdram_base;
 
-	sdram_base = map_physmem(EBI_SDRAM_BASE, EBI_SDRAM_SIZE, MAP_NOCACHE);
+	sdram_base = uncached(EBI_SDRAM_BASE);
 
 	expected_size = sdram_init(sdram_base, &sdram_config);
 	actual_size = get_ram_size(sdram_base, expected_size);
 
-	unmap_physmem(sdram_base, EBI_SDRAM_SIZE);
-
 	if (expected_size != actual_size)
 		printf("Warning: Only %lu of %lu MiB SDRAM is working\n",
 		       actual_size >> 20, expected_size >> 20);