* Get (mostly) rid of CFG_MONITOR_LEN definition; compute real length
  instead CFG_MONITOR_LEN is now only used to determine  _at_compile_
  _time_  (!) if the environment is embedded within the U-Boot image,
  or in a separate flash sector.

* Cleanup CFG_DER #defines in config files (wd maintained only)
diff --git a/board/eric/flash.c b/board/eric/flash.c
index c3f6e15..5dfb620 100644
--- a/board/eric/flash.c
+++ b/board/eric/flash.c
@@ -83,13 +83,13 @@
 	    /* Monitor protection ON by default */
 #if 0	    /* sand: */
 	    (void)flash_protect(FLAG_PROTECT_SET,
-				FLASH_BASE0_PRELIM-CFG_MONITOR_LEN+size_b0,
+				FLASH_BASE0_PRELIM-monitor_flash_len+size_b0,
 				FLASH_BASE0_PRELIM-1+size_b0,
 				&flash_info[0]);
 #else
 	    (void)flash_protect(FLAG_PROTECT_SET,
 		      		CFG_MONITOR_BASE,
-		      		CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+		      		CFG_MONITOR_BASE+monitor_flash_len-1,
 		      		&flash_info[0]);
 #endif
 	    size_b1 = 0 ;
@@ -132,13 +132,13 @@
 	    /* monitor protection ON by default */
 #if 0	    /* sand: */
 	    (void)flash_protect(FLAG_PROTECT_SET,
-				FLASH_BASE0_PRELIM-CFG_MONITOR_LEN+size_b0,
+				FLASH_BASE0_PRELIM-monitor_flash_len+size_b0,
 				FLASH_BASE0_PRELIM-1+size_b0,
 				&flash_info[0]);
 #else
 	    (void)flash_protect(FLAG_PROTECT_SET,
 		      		CFG_MONITOR_BASE,
-		      		CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+		      		CFG_MONITOR_BASE+monitor_flash_len-1,
 		      		&flash_info[0]);
 #endif
 
@@ -150,12 +150,12 @@
 
 	      /* monitor protection ON by default */
 	      (void)flash_protect(FLAG_PROTECT_SET,
-				  base_b1+size_b1-CFG_MONITOR_LEN,
+				  base_b1+size_b1-monitor_flash_len,
 				  base_b1+size_b1-1,
 				  &flash_info[1]);
 	      /* monitor protection OFF by default (one is enough) */
 	      (void)flash_protect(FLAG_PROTECT_CLEAR,
-				  base_b0+size_b0-CFG_MONITOR_LEN,
+				  base_b0+size_b0-monitor_flash_len,
 				  base_b0+size_b0-1,
 				  &flash_info[0]);
 	    } else {