diff --git a/lib/bsp/standalone/src/changelog.txt b/lib/bsp/standalone/src/changelog.txt
index fb5a77c5..fc69c962 100755
--- a/lib/bsp/standalone/src/changelog.txt
+++ b/lib/bsp/standalone/src/changelog.txt
@@ -197,4 +197,6 @@
  *		       and iccarm/boot.s. Also uart.c and smc.c have been removed. Also 
  *		       removed function definition of XSmc_NorInit and XSmc_NorInit from
  *		       cortexa9/smc.h
+ * 4.2 bss   08/11/14  Added microblaze_flush_cache_ext_range and microblaze_invalidate_
+ *		       cache_ext_range declarations in mb_interface.h CR#783821.
  ******************************************************************************************/
diff --git a/lib/bsp/standalone/src/microblaze/mb_interface.h b/lib/bsp/standalone/src/microblaze/mb_interface.h
index 8bb4937a..efc98aaa 100755
--- a/lib/bsp/standalone/src/microblaze/mb_interface.h
+++ b/lib/bsp/standalone/src/microblaze/mb_interface.h
@@ -60,6 +60,10 @@ extern void microblaze_flush_dcache_range(unsigned int cacheaddr, unsigned int l
 extern void microblaze_scrub(void);                     /* Scrub LMB and internal BRAM */
 extern void microblaze_invalidate_cache_ext(void);         /* Invalidate cache ext */
 extern void microblaze_flush_cache_ext(void);         /* Flush cache ext */
+extern void microblaze_flush_cache_ext_range(unsigned int cacheaddr,
+			unsigned int len); /* Flush cache ext range */
+extern void microblaze_invalidate_cache_ext_range(unsigned int cacheaddr,
+			unsigned int len); /* Invalidate cache ext range */
 
 /* Deprecated */
 extern void microblaze_update_icache (int , int , int ) __attribute__((deprecated));