diff --git a/bsp/stm32/stm32f407-atk-explorer/board/Kconfig b/bsp/stm32/stm32f407-atk-explorer/board/Kconfig
index e9a3d5fce0f5d948c063cfccdc80d863cfb67267..b62ef50547d535d21a41db477ea4e35aa4879ccf 100644
--- a/bsp/stm32/stm32f407-atk-explorer/board/Kconfig
+++ b/bsp/stm32/stm32f407-atk-explorer/board/Kconfig
@@ -134,40 +134,29 @@ menu "Onboard Peripheral Drivers"
         select BSP_USING_I2C1
         select PKG_USING_MPU6XXX
 
-    menu "Enable File System"
-        config BSP_USING_FS
-            bool
-            default n
-
-        config BSP_USING_SDCARD_FATFS
-            bool "Enable SDCARD (FATFS)"
-            select BSP_USING_SDIO
-            select RT_USING_DFS
-            select RT_USING_DFS_ELMFAT
-            select RT_USING_DFS_ROMFS
-            select BSP_USING_FS
-            default n
+    menuconfig BSP_USING_FS
+        bool "Enable File System"
+        select RT_USING_DFS
+        select RT_USING_DFS_ROMFS
+        default n
 
-        config SDIO_MAX_FREQ
-            int "sdio max freq"
-            range 0 24000000
-            depends on BSP_USING_SDCARD
-            default 1000000
-
-        config BSP_USING_SPI_FLASH_LITTLEFS
-            bool "Enable SPI-FLASH (LittleFS)"
-            select RT_USING_DFS
-            select RT_USING_DFS_ROMFS
-            select RT_USING_MTD_NOR
-            select BSP_USING_SPI_FLASH
-            select BSP_USING_FS
-            select RT_USING_FAL
-            select FAL_USING_AUTO_INIT
-            select FAL_PART_HAS_TABLE_CFG
-            select PKG_USING_LITTLEFS
-            default n
+        if BSP_USING_FS
+            config BSP_USING_SDCARD_FATFS
+                bool "Enable SDCARD (FATFS)"
+                select BSP_USING_SDIO
+                select RT_USING_DFS_ELMFAT
+                default n
 
-    endmenu
+            config BSP_USING_SPI_FLASH_LITTLEFS
+                bool "Enable SPI-FLASH (LittleFS)"
+                select RT_USING_MTD_NOR
+                select BSP_USING_SPI_FLASH
+                select RT_USING_FAL
+                select FAL_USING_AUTO_INIT
+                select FAL_PART_HAS_TABLE_CFG
+                select PKG_USING_LITTLEFS
+                default n
+        endif
 
 endmenu
 
@@ -467,6 +456,12 @@ menu "On-chip Peripheral Drivers"
         select RT_USING_DFS
         default n
 
+    config SDIO_MAX_FREQ
+        int "sdio max freq"
+        range 0 24000000
+        depends on BSP_USING_SDIO
+        default 1000000
+
     config BSP_USING_USBD
         bool "Enable USB Device"
         select RT_USING_USB_DEVICE
diff --git a/bsp/stm32/stm32f407-atk-explorer/board/SConscript b/bsp/stm32/stm32f407-atk-explorer/board/SConscript
index f45fee08a8ec6e3f6b80ef64e8faa04e03faf38b..c01bb6a1293ae4863d739b7f135987a17548830d 100644
--- a/bsp/stm32/stm32f407-atk-explorer/board/SConscript
+++ b/bsp/stm32/stm32f407-atk-explorer/board/SConscript
@@ -27,7 +27,8 @@ if GetDepend(['BSP_USING_SPI_FLASH']):
 if GetDepend(['BSP_USING_FS']):
     src += Glob('ports/drv_filesystem.c')
     if GetDepend(['BSP_USING_SPI_FLASH_LITTLEFS']):
-        src += Glob('ports/fal_spi_flash_sfud_port.c')
+        src += Glob('ports/fal/fal_spi_flash_sfud_port.c')
+        path += [cwd + '/ports/fal']
 
 if GetDepend(['BSP_USING_SRAM']):
     src += Glob('ports/drv_sram.c')
diff --git a/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c b/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
index cafb45b1074faad03115706164c70c57b43814fc..c54157eb0de85dc970d9596e686d1da94818d841 100644
--- a/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
+++ b/bsp/stm32/stm32f407-atk-explorer/board/ports/drv_filesystem.c
@@ -11,15 +11,9 @@
  */
 
 #include <rtthread.h>
-
-#ifdef BSP_USING_FS
 #include <dfs_romfs.h>
 #include <dfs_fs.h>
 #include <dfs_file.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <sys/stat.h>
-#include <sys/statfs.h>
 
 #if DFS_FILESYSTEMS_MAX < 4
 #error "Please define DFS_FILESYSTEMS_MAX more than 4"
@@ -46,7 +40,7 @@ static int onboard_sdcard_mount(void)
 
     return RT_EOK;
 }
-#endif
+#endif /* BSP_USING_SDCARD_FATFS */
 
 #ifdef BSP_USING_SPI_FLASH_LITTLEFS
 #include <fal.h>
@@ -83,7 +77,7 @@ static int onboard_spiflash_mount(void)
 
     return RT_EOK;
 }
-#endif
+#endif /* BSP_USING_SPI_FLASH_LITTLEFS */
 
 static const struct romfs_dirent _romfs_root[] =
 {
@@ -96,7 +90,7 @@ static const struct romfs_dirent _romfs_root[] =
 #endif
 };
 
-const struct romfs_dirent romfs_root =
+static const struct romfs_dirent romfs_root =
 {
     ROMFS_DIRENT_DIR, "/", (rt_uint8_t *)_romfs_root, sizeof(_romfs_root) / sizeof(_romfs_root[0])
 };
@@ -118,5 +112,3 @@ static int filesystem_mount(void)
     return RT_EOK;
 }
 INIT_APP_EXPORT(filesystem_mount);
-
-#endif /* BSP_USING_FS */
diff --git a/bsp/stm32/stm32f407-atk-explorer/board/ports/fal_cfg.h b/bsp/stm32/stm32f407-atk-explorer/board/ports/fal/fal_cfg.h
similarity index 100%
rename from bsp/stm32/stm32f407-atk-explorer/board/ports/fal_cfg.h
rename to bsp/stm32/stm32f407-atk-explorer/board/ports/fal/fal_cfg.h
diff --git a/bsp/stm32/stm32f407-atk-explorer/board/ports/fal_spi_flash_sfud_port.c b/bsp/stm32/stm32f407-atk-explorer/board/ports/fal/fal_spi_flash_sfud_port.c
similarity index 100%
rename from bsp/stm32/stm32f407-atk-explorer/board/ports/fal_spi_flash_sfud_port.c
rename to bsp/stm32/stm32f407-atk-explorer/board/ports/fal/fal_spi_flash_sfud_port.c