diff --git a/include/sizes.h b/include/sizes.h
index c47f90685..6f91e9b4b 100644
--- a/include/sizes.h
+++ b/include/sizes.h
@@ -17,7 +17,19 @@
 #define __sizes_h			1
 
 /* handy sizes */
+#define SZ_1				0x00000001
+#define SZ_2				0x00000002
+#define SZ_4				0x00000004
+#define SZ_8				0x00000008
+#define SZ_16				0x00000010
+#define SZ_32				0x00000020
+#define SZ_64				0x00000040
+#define SZ_128				0x00000080
+#define SZ_256				0x00000100
+#define SZ_512				0x00000200
+
 #define SZ_1K				0x00000400
+#define SZ_2K				0x00000800
 #define SZ_4K				0x00001000
 #define SZ_8K				0x00002000
 #define SZ_16K				0x00004000