[DFS] Fix the UFFS compiling issue.

components/dfs/KConfig

@@ -109,6 +109,33 @@ if RT_USING_DFS
         select RT_USING_MTD_NAND
         default n
 
+    if RT_USING_DFS_UFFS
+        choice 
+            prompt "UFFS ECC mode"
+            default RT_UFFS_ECC_MODE_1
+
+            config RT_UFFS_ECC_MODE_0
+                bool "0: Do not use ECC"
+
+            config RT_UFFS_ECC_MODE_1
+                bool "1: UFFS calculate the ECC"
+
+            config RT_UFFS_ECC_MODE_2
+                bool "2: Flash driver(or by hardware) calculate the ECC"
+            
+            config RT_UFFS_ECC_MODE_3
+                bool "3: Hardware calculate the ECC and automatically write to spare."
+        endchoice
+        
+        config RT_UFFS_ECC_MODE
+            int
+            default 0 if RT_UFFS_ECC_MODE_0
+            default 1 if RT_UFFS_ECC_MODE_1
+            default 2 if RT_UFFS_ECC_MODE_2
+            default 3 if RT_UFFS_ECC_MODE_3
+        
+    endif
+
     config RT_USING_DFS_NFS
         bool "Using NFS v3 client file system"
         depends on RT_USING_LWIP

components/dfs/filesystems/uffs/dfs_uffs.h

@@ -29,6 +29,27 @@
 #include "uffs/uffs_public.h"
 
 /* the UFFS ECC mode opitons  */
+#ifndef RT_UFFS_ECC_MODE
+#define RT_UFFS_ECC_MODE      1
+#endif
+
+/*
+ * RT_UFFS_ECC_MODE:
+ * 0, Do not use ECC
+ * 1, UFFS calculate the ECC
+ * 2, Flash driver(or by hardware) calculate the ECC
+ * 3, Hardware calculate the ECC and automatically write to spare.
+ */
+#if RT_UFFS_ECC_MODE == 0
+#define RT_CONFIG_UFFS_ECC_MODE UFFS_ECC_NONE
+#elif RT_UFFS_ECC_MODE == 1
+#define RT_CONFIG_UFFS_ECC_MODE UFFS_ECC_SOFT
+#elif RT_UFFS_ECC_MODE == 2
+#define RT_CONFIG_UFFS_ECC_MODE UFFS_ECC_HW
+#elif RT_UFFS_ECC_MODE == 3
+#define RT_CONFIG_UFFS_ECC_MODE UFFS_ECC_HW_AUTO
+#endif
+
 /* #define RT_CONFIG_UFFS_ECC_MODE  UFFS_ECC_HW_AUTO */
 /* #define RT_CONFIG_UFFS_ECC_MODE  UFFS_ECC_SOFT */
 /* #define RT_CONFIG_UFFS_ECC_MODE  UFFS_ECC_NONE */