diff -Nur linux-4.8.11.orig/arch/openrisc/boot/dts/or1ksim.dts linux-4.8.11/arch/openrisc/boot/dts/or1ksim.dts
--- linux-4.8.11.orig/arch/openrisc/boot/dts/or1ksim.dts	2016-11-26 09:57:13.000000000 +0100
+++ linux-4.8.11/arch/openrisc/boot/dts/or1ksim.dts	2016-12-04 14:39:46.092952799 +0100
@@ -11,7 +11,7 @@
 
 	memory@0 {
 		device_type = "memory";
-		reg = <0x00000000 0x02000000>;
+		reg = <0x00000000 0x04000000>;
 	};
 
 	cpus {