Index: boot/arch/ia64/src/main.c
===================================================================
--- boot/arch/ia64/src/main.c	(revision 100806465eefdbc917d7fcd6da881dc85f5a0c8b)
+++ boot/arch/ia64/src/main.c	(revision 34ae0a59ac38f9f0c42422df75a6ae4d5337dde5)
@@ -48,5 +48,5 @@
 
 #define DEFAULT_MEMORY_BASE		0x4000000ULL
-#define DEFAULT_MEMORY_SIZE		0x4000000ULL
+#define DEFAULT_MEMORY_SIZE		(256 * 1024 * 1024)
 #define DEFAULT_LEGACY_IO_BASE		0x00000FFFFC000000ULL
 #define DEFAULT_LEGACY_IO_SIZE		0x4000000ULL