+#ifdef CONFIG_SECURE_BOOT
+#define CONFIG_U_BOOT_HDR_SIZE (16 << 10)
+/*
+ * HDR would be appended at end of image and copied to DDR along
+ * with U-Boot image. Here u-boot max. size is 512K. So if binary
+ * size increases then increase this size in case of secure boot as
+ * it uses raw u-boot image instead of fit image.
+ */
+#define CONFIG_SYS_MONITOR_LEN (0x100000 + CONFIG_U_BOOT_HDR_SIZE)
+#else
+#define CONFIG_SYS_MONITOR_LEN 0x100000
+#endif /* ifdef CONFIG_SECURE_BOOT */
+
+#endif