diff --git a/target/linux/mpc85xx/files/arch/powerpc/boot/dts/ws-ap3825i.dts b/target/linux/mpc85xx/files/arch/powerpc/boot/dts/ws-ap3825i.dts
index c07167b40fe..a347900e5df 100644
--- a/target/linux/mpc85xx/files/arch/powerpc/boot/dts/ws-ap3825i.dts
+++ b/target/linux/mpc85xx/files/arch/powerpc/boot/dts/ws-ap3825i.dts
@@ -301,7 +301,8 @@
 	};
 
 	memory {
-		reg = <0x0 0x0 0x0 0x10000000>;
+		/* Reserve upper MB for second-core-bootpage */
+		reg = <0x0 0x0 0x0 0xff00000>;
 	};
 
 	soc@ffe00000 {