diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 8da8222127696bc79edd6fd6f6e4c0a38cc31be9..50caacdb87e778264ed3e02f8ee252a50ae4fad8 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -224,4 +224,7 @@
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV 0
 
+#define CONFIG_OF_LIBFDT
+#define CONFIG_SYS_BOOTMAPSZ   0x800000
+
 #endif
diff --git a/include/configs/mx53evk.h b/include/configs/mx53evk.h
index f2a5752750ef6bcbdc0431e076c2bdbc81c984e7..6ac910b6d99f6d7a1ebcdab7566766d2d851c502 100644
--- a/include/configs/mx53evk.h
+++ b/include/configs/mx53evk.h
@@ -190,4 +190,7 @@
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_SYS_MMC_ENV_DEV 0
 
+#define CONFIG_OF_LIBFDT
+#define CONFIG_SYS_BOOTMAPSZ   0x800000
+
 #endif				/* __CONFIG_H */