Index: boot/arch/ia64/src/main.c
===================================================================
--- boot/arch/ia64/src/main.c	(revision bb1b44e673157567c65b0f349f6543e6b2b5fd02)
+++ boot/arch/ia64/src/main.c	(revision 0f2c80a17628da53fba63a7b3558ffd47d06ddcc)
@@ -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