Index: head/sys/dev/sfxge/common/siena_flash.h
===================================================================
--- head/sys/dev/sfxge/common/siena_flash.h
+++ head/sys/dev/sfxge/common/siena_flash.h
@@ -91,6 +91,19 @@
 #define	BLOB_CPU_TYPE_RXDI_VTBL1 (14)
 #define	BLOB_CPU_TYPE_TXDI_VTBL1 (15)
 #define	BLOB_CPU_TYPE_DUMPSPEC (32)
+#define	BLOB_CPU_TYPE_MC_XIP   (33)
+
+#define	BLOB_CPU_TYPE_INVALID (31)
+
+/*
+ * The upper four bits of the CPU type field specify the compression
+ * algorithm used for this blob.
+ */
+#define	BLOB_COMPRESSION_MASK (0xf0000000)
+#define	BLOB_CPU_TYPE_MASK    (0x0fffffff)
+
+#define	BLOB_COMPRESSION_NONE (0x00000000) /* Stored as is */
+#define	BLOB_COMPRESSION_LZ   (0x10000000) /* see lib/lzdecoder.c */
 
 typedef struct siena_mc_boot_hdr_s {		/* GENERATED BY scripts/genfwdef */
 	efx_dword_t	magic;			/* = SIENA_MC_BOOT_MAGIC */