Index: src/arm/ti/omap/omap3-beagle-xm.dts
--- src/arm/ti/omap/omap3-beagle-xm.dts.orig
+++ src/arm/ti/omap/omap3-beagle-xm.dts
@@ -21,6 +21,10 @@
 		reg = <0x80000000 0x20000000>; /* 512 MB */
 	};
 
+	chosen {
+		stdout-path = &uart3;
+	};
+
 	aliases {
 		display0 = &dvi0;
 		display1 = &tv0;
