diff --git a/include/configs/stm32f469-discovery.h b/include/configs/stm32f469-discovery.h
index 23ed02a..8212fb6 100644
--- a/include/configs/stm32f469-discovery.h
+++ b/include/configs/stm32f469-discovery.h
@@ -7,6 +7,11 @@
 #ifndef __CONFIG_H
 #define __CONFIG_H
 
+#include <linux/sizes.h>
+
+/* For booting Linux, use the first 12MB of memory */
+#define CONFIG_SYS_BOOTMAPSZ		SZ_8M + SZ_4M
+
 #define CONFIG_SYS_FLASH_BASE		0x08000000
 
 #define CONFIG_SYS_INIT_SP_ADDR		0x10010000
@@ -44,8 +49,6 @@
 			"scriptaddr=0x00418000\0"		\
 			"pxefile_addr_r=0x00428000\0" \
 			"ramdisk_addr_r=0x00438000\0"		\
-			"fdt_high=0xffffffffffffffff\0"		\
-			"initrd_high=0xffffffffffffffff\0"	\
 			BOOTENV
 
 /*