diff --git a/hw/sd/omap_mmc.c b/hw/sd/omap_mmc.c
index 5b47cadf11..aa2a816f76 100644
--- a/hw/sd/omap_mmc.c
+++ b/hw/sd/omap_mmc.c
@@ -17,6 +17,7 @@
  * with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "qemu/osdep.h"
+#include "qemu/log.h"
 #include "hw/hw.h"
 #include "hw/arm/omap.h"
 #include "hw/sd/sd.h"
@@ -449,10 +450,14 @@ static void omap_mmc_write(void *opaque, hwaddr offset,
         s->enable = (value >> 11) & 1;
         s->be = (value >> 10) & 1;
         s->clkdiv = (value >> 0) & (s->rev >= 2 ? 0x3ff : 0xff);
-        if (s->mode != 0)
-            printf("SD mode %i unimplemented!\n", s->mode);
-        if (s->be != 0)
-            printf("SD FIFO byte sex unimplemented!\n");
+        if (s->mode != 0) {
+            qemu_log_mask(LOG_UNIMP,
+                          "omap_mmc_wr: mode #%i unimplemented\n", s->mode);
+        }
+        if (s->be != 0) {
+            qemu_log_mask(LOG_UNIMP,
+                          "omap_mmc_wr: Big Endian not implemented\n");
+        }
         if (s->dw != 0 && s->lines < 4)
             printf("4-bit SD bus enabled\n");
         if (!s->enable)