diff --git a/README b/README
index 77d46d2..075d919 100644
--- a/README
+++ b/README
@@ -840,7 +840,6 @@
 					  that work for multiple fs types
 		CONFIG_CMD_FS_UUID	* Look up a filesystem UUID
 		CONFIG_CMD_SAVEENV	  saveenv
-		CONFIG_CMD_FAT		* FAT command support
 		CONFIG_CMD_FLASH	  flinfo, erase, protect
 		CONFIG_CMD_FPGA		  FPGA device initialization support
 		CONFIG_CMD_GO		* the 'go' command (exec code)
@@ -1065,8 +1064,6 @@
 - Partition Labels (disklabels) Supported:
 		Zero or more of the following:
 		CONFIG_MAC_PARTITION   Apple's MacOS partition table.
-		CONFIG_DOS_PARTITION   MS Dos partition table, traditional on the
-				       Intel architecture, USB sticks, etc.
 		CONFIG_ISO_PARTITION   ISO partition table, used on CDROM etc.
 		CONFIG_EFI_PARTITION   GPT partition table, common when EFI is the
 				       bootloader.  Note 2TB partition limit; see
@@ -1519,21 +1516,6 @@
 		CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS
 		Define these for a default partition on a NOR device
 
-- FAT(File Allocation Table) filesystem write function support:
-		CONFIG_FAT_WRITE
-
-		Define this to enable support for saving memory data as a
-		file in FAT formatted partition.
-
-		This will also enable the command "fatwrite" enabling the
-		user to write files to FAT.
-
-- FAT(File Allocation Table) filesystem cluster size:
-		CONFIG_FS_FAT_MAX_CLUSTSIZE
-
-		Define the max cluster size for fat operations else
-		a default value of 65536 will be defined.
-
 - Keyboard Support:
 		See Kconfig help for available keyboard drivers.
 
@@ -3870,7 +3852,7 @@
          environment.
 
        - CONFIG_FAT_WRITE:
-         This should be defined. Otherwise it cannot save the environment file.
+         This must be enabled. Otherwise it cannot save the environment file.
 
 - CONFIG_ENV_IS_IN_MMC:
 
diff --git a/arch/Kconfig b/arch/Kconfig
index e0e4e84..e447671 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -70,14 +70,15 @@
 	select DM_SPI
 	select DM_GPIO
 	select DM_MMC
-	imply CRC32_VERIFY
 	imply CMD_GETTIME
 	imply CMD_HASH
 	imply CMD_IO
 	imply CMD_IOTRACE
-	imply LZMA
 	imply CMD_LZMADEC
+	imply CRC32_VERIFY
+	imply FAT_WRITE
 	imply HASH_VERIFY
+	imply LZMA
 
 config SH
 	bool "SuperH architecture"
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a8118ce..deb7b24 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -477,6 +477,7 @@
 	select DM_SERIAL
 	select DM_GPIO
 	select OF_CONTROL
+	imply FAT_WRITE
 
 config TARGET_VEXPRESS_CA15_TC2
 	bool "Support vexpress_ca15_tc2"
@@ -496,17 +497,20 @@
 	bool "Support bcm23550_w1d"
 	select CPU_V7
 	imply CRC32_VERIFY
+	imply FAT_WRITE
 
 config TARGET_BCM28155_AP
 	bool "Support bcm28155_ap"
 	select CPU_V7
 	imply CRC32_VERIFY
+	imply FAT_WRITE
 
 config TARGET_BCMCYGNUS
 	bool "Support bcmcygnus"
 	select CPU_V7
 	imply CRC32_VERIFY
 	imply CMD_HASH
+	imply FAT_WRITE
 	imply HASH_VERIFY
 
 config TARGET_BCMNSP
@@ -530,6 +534,7 @@
 	select DM_SPI
 	select DM_GPIO
 	select DM_KEYBOARD
+	imply FAT_WRITE
 
 config ARCH_S5PC1XX
 	bool "Samsung S5PC1XX"
@@ -602,6 +607,7 @@
 	select DM
 	select DM_SERIAL
 	select BOARD_EARLY_INIT_F
+	imply FAT_WRITE
 	imply SYS_THUMB_BUILD
 
 config TARGET_S32V234EVB
@@ -634,6 +640,7 @@
 	select SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
 	select SYS_THUMB_BUILD
 	imply CRC32_VERIFY
+	imply FAT_WRITE
 
 config ARCH_SUNXI
 	bool "Support sunxi (Allwinner) SoCs"
@@ -657,6 +664,7 @@
 	select USB_STORAGE if DISTRO_DEFAULTS
 	select USB_KEYBOARD if DISTRO_DEFAULTS
 	select USE_TINY_PRINTF
+	imply FAT_WRITE
 	imply PRE_CONSOLE_BUFFER
 	imply SPL_GPIO_SUPPORT
 	imply SPL_LIBCOMMON_SUPPORT
@@ -700,6 +708,7 @@
 	select SPL_CLK
 	select CLK_ZYNQ
 	imply CMD_CLK
+	imply FAT_WRITE
 
 config ARCH_ZYNQMP
 	bool "Support Xilinx ZynqMP Platform"
@@ -713,9 +722,11 @@
 	select SPL_BOARD_INIT if SPL
 	select SPL_CLK
 	select DM_USB if USB
+	imply FAT_WRITE
 
 config TEGRA
 	bool "NVIDIA Tegra"
+	imply FAT_WRITE
 
 config TARGET_VEXPRESS64_AEMV8A
 	bool "Support vexpress_aemv8a"
@@ -974,6 +985,7 @@
 	select SPL_OF_CONTROL if SPL
 	select SPL_PINCTRL if SPL
 	select SUPPORT_SPL
+	imply FAT_WRITE
 	help
 	  Support for UniPhier SoC family developed by Socionext Inc.
 	  (formerly, System LSI Business Division of Panasonic Corporation)
@@ -1016,6 +1028,7 @@
 	select DM_USB if USB
 	select DM_PWM
 	select DM_REGULATOR
+	imply FAT_WRITE
 
 config TARGET_THUNDERX_88XX
 	bool "Support ThunderX 88xx"
diff --git a/configs/am335x_baltos_defconfig b/configs/am335x_baltos_defconfig
index 590673b..f210cca 100644
--- a/configs/am335x_baltos_defconfig
+++ b/configs/am335x_baltos_defconfig
@@ -60,4 +60,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_evm_nor_defconfig b/configs/am335x_evm_nor_defconfig
index 55ed8f3..31019e3 100644
--- a/configs/am335x_evm_nor_defconfig
+++ b/configs/am335x_evm_nor_defconfig
@@ -44,4 +44,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_igep003x_defconfig b/configs/am335x_igep003x_defconfig
index fa468f0..651e194 100644
--- a/configs/am335x_igep003x_defconfig
+++ b/configs/am335x_igep003x_defconfig
@@ -49,6 +49,7 @@
 CONFIG_MMC_OMAP_HS=y
 CONFIG_MTD_UBI_FASTMAP=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_FDT_FIXUP_PARTITIONS=y
 # CONFIG_GENERATE_SMBIOS_TABLE is not set
diff --git a/configs/am335x_shc_defconfig b/configs/am335x_shc_defconfig
index 1068678..ab912bb 100644
--- a/configs/am335x_shc_defconfig
+++ b/configs/am335x_shc_defconfig
@@ -39,4 +39,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_shc_ict_defconfig b/configs/am335x_shc_ict_defconfig
index 85b24a5..7d75c5c 100644
--- a/configs/am335x_shc_ict_defconfig
+++ b/configs/am335x_shc_ict_defconfig
@@ -39,4 +39,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_shc_netboot_defconfig b/configs/am335x_shc_netboot_defconfig
index 9117407..322a070 100644
--- a/configs/am335x_shc_netboot_defconfig
+++ b/configs/am335x_shc_netboot_defconfig
@@ -40,4 +40,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_shc_prompt_defconfig b/configs/am335x_shc_prompt_defconfig
index e71e54b..c5d8dca 100644
--- a/configs/am335x_shc_prompt_defconfig
+++ b/configs/am335x_shc_prompt_defconfig
@@ -37,4 +37,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_shc_sdboot_defconfig b/configs/am335x_shc_sdboot_defconfig
index bd66fbc..185258d 100644
--- a/configs/am335x_shc_sdboot_defconfig
+++ b/configs/am335x_shc_sdboot_defconfig
@@ -39,4 +39,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_shc_sdboot_prompt_defconfig b/configs/am335x_shc_sdboot_prompt_defconfig
index bd66fbc..185258d 100644
--- a/configs/am335x_shc_sdboot_prompt_defconfig
+++ b/configs/am335x_shc_sdboot_prompt_defconfig
@@ -39,4 +39,5 @@
 # CONFIG_SPL_ISO_PARTITION is not set
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am335x_sl50_defconfig b/configs/am335x_sl50_defconfig
index bae1dfe..86035d2 100644
--- a/configs/am335x_sl50_defconfig
+++ b/configs/am335x_sl50_defconfig
@@ -37,4 +37,5 @@
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am43xx_evm_ethboot_defconfig b/configs/am43xx_evm_ethboot_defconfig
index 6a30706..20874dd 100644
--- a/configs/am43xx_evm_ethboot_defconfig
+++ b/configs/am43xx_evm_ethboot_defconfig
@@ -58,4 +58,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am43xx_evm_qspiboot_defconfig b/configs/am43xx_evm_qspiboot_defconfig
index 84766e8..c0d0bcc 100644
--- a/configs/am43xx_evm_qspiboot_defconfig
+++ b/configs/am43xx_evm_qspiboot_defconfig
@@ -55,4 +55,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/am43xx_evm_usbhost_boot_defconfig b/configs/am43xx_evm_usbhost_boot_defconfig
index a98a97f..870ed0f 100644
--- a/configs/am43xx_evm_usbhost_boot_defconfig
+++ b/configs/am43xx_evm_usbhost_boot_defconfig
@@ -72,3 +72,4 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
+CONFIG_FAT_WRITE=y
diff --git a/configs/am57xx_evm_nodt_defconfig b/configs/am57xx_evm_nodt_defconfig
index 33e7f91..6048e6c 100644
--- a/configs/am57xx_evm_nodt_defconfig
+++ b/configs/am57xx_evm_nodt_defconfig
@@ -62,4 +62,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/apalis_imx6_defconfig b/configs/apalis_imx6_defconfig
index c712cf9..d171cf0 100644
--- a/configs/apalis_imx6_defconfig
+++ b/configs/apalis_imx6_defconfig
@@ -49,6 +49,7 @@
 CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4000
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_OF_LIBFDT_OVERLAY=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/apalis_imx6_nospl_com_defconfig b/configs/apalis_imx6_nospl_com_defconfig
index f5f4e3d..6611c43 100644
--- a/configs/apalis_imx6_nospl_com_defconfig
+++ b/configs/apalis_imx6_nospl_com_defconfig
@@ -42,5 +42,6 @@
 CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4020
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/apalis_imx6_nospl_it_defconfig b/configs/apalis_imx6_nospl_it_defconfig
index 0de47fe..dba0a7c 100644
--- a/configs/apalis_imx6_nospl_it_defconfig
+++ b/configs/apalis_imx6_nospl_it_defconfig
@@ -42,5 +42,6 @@
 CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4020
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/at91sam9m10g45ek_mmc_defconfig b/configs/at91sam9m10g45ek_mmc_defconfig
index 18b6ddf7..d8ba087 100644
--- a/configs/at91sam9m10g45ek_mmc_defconfig
+++ b/configs/at91sam9m10g45ek_mmc_defconfig
@@ -49,3 +49,4 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/at91sam9n12ek_mmc_defconfig b/configs/at91sam9n12ek_mmc_defconfig
index e7e8a01..d13eed0 100644
--- a/configs/at91sam9n12ek_mmc_defconfig
+++ b/configs/at91sam9n12ek_mmc_defconfig
@@ -48,3 +48,4 @@
 CONFIG_DM_USB=y
 CONFIG_USB_STORAGE=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/at91sam9rlek_mmc_defconfig b/configs/at91sam9rlek_mmc_defconfig
index 9a40c41..edf9881 100644
--- a/configs/at91sam9rlek_mmc_defconfig
+++ b/configs/at91sam9rlek_mmc_defconfig
@@ -42,3 +42,4 @@
 CONFIG_DEBUG_UART_ANNOUNCE=y
 CONFIG_ATMEL_USART=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/at91sam9x5ek_mmc_defconfig b/configs/at91sam9x5ek_mmc_defconfig
index ddeeeef..fbe11ef 100644
--- a/configs/at91sam9x5ek_mmc_defconfig
+++ b/configs/at91sam9x5ek_mmc_defconfig
@@ -54,3 +54,4 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/bcm958622hr_defconfig b/configs/bcm958622hr_defconfig
index 67e18b6..62e50b6 100644
--- a/configs/bcm958622hr_defconfig
+++ b/configs/bcm958622hr_defconfig
@@ -19,6 +19,7 @@
 CONFIG_CMD_FAT=y
 # CONFIG_MMC is not set
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_SHA1=y
 CONFIG_SHA256=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/birdland_bav335a_defconfig b/configs/birdland_bav335a_defconfig
index 7811273..d866b60 100644
--- a/configs/birdland_bav335a_defconfig
+++ b/configs/birdland_bav335a_defconfig
@@ -63,4 +63,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/birdland_bav335b_defconfig b/configs/birdland_bav335b_defconfig
index 1765ec4..ef73fbf 100644
--- a/configs/birdland_bav335b_defconfig
+++ b/configs/birdland_bav335b_defconfig
@@ -54,6 +54,7 @@
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_USB=y
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_MUSB_GADGET=y
diff --git a/configs/brppt1_mmc_defconfig b/configs/brppt1_mmc_defconfig
index 1bdbf90..3566223 100644
--- a/configs/brppt1_mmc_defconfig
+++ b/configs/brppt1_mmc_defconfig
@@ -58,4 +58,5 @@
 CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_LCD=y
 CONFIG_OMAP_WATCHDOG=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/brppt1_nand_defconfig b/configs/brppt1_nand_defconfig
index ed7432d..f07a46b 100644
--- a/configs/brppt1_nand_defconfig
+++ b/configs/brppt1_nand_defconfig
@@ -58,4 +58,5 @@
 CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_LCD=y
 CONFIG_OMAP_WATCHDOG=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/brppt1_spi_defconfig b/configs/brppt1_spi_defconfig
index 02b5ff6..333e204 100644
--- a/configs/brppt1_spi_defconfig
+++ b/configs/brppt1_spi_defconfig
@@ -66,4 +66,5 @@
 CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_LCD=y
 CONFIG_OMAP_WATCHDOG=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/brxre1_defconfig b/configs/brxre1_defconfig
index 940793b..f558886 100644
--- a/configs/brxre1_defconfig
+++ b/configs/brxre1_defconfig
@@ -57,5 +57,6 @@
 CONFIG_USB_STORAGE=y
 CONFIG_SYS_WHITE_ON_BLACK=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/cairo_defconfig b/configs/cairo_defconfig
index da28e13..d96a71a 100644
--- a/configs/cairo_defconfig
+++ b/configs/cairo_defconfig
@@ -34,4 +34,5 @@
 CONFIG_EFI_PARTITION=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/chiliboard_defconfig b/configs/chiliboard_defconfig
index 2f4c694..579df94 100644
--- a/configs/chiliboard_defconfig
+++ b/configs/chiliboard_defconfig
@@ -41,4 +41,5 @@
 CONFIG_USB=y
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/cl-som-am57x_defconfig b/configs/cl-som-am57x_defconfig
index ef76033..8485137 100644
--- a/configs/cl-som-am57x_defconfig
+++ b/configs/cl-som-am57x_defconfig
@@ -53,4 +53,5 @@
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/cm_t335_defconfig b/configs/cm_t335_defconfig
index dbb1c3b..876e332 100644
--- a/configs/cm_t335_defconfig
+++ b/configs/cm_t335_defconfig
@@ -50,4 +50,5 @@
 CONFIG_LED_STATUS_BOOT=0
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/cm_t43_defconfig b/configs/cm_t43_defconfig
index bec96ae..d813cc5 100644
--- a/configs/cm_t43_defconfig
+++ b/configs/cm_t43_defconfig
@@ -68,4 +68,5 @@
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_XHCI_DWC3=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/cm_t54_defconfig b/configs/cm_t54_defconfig
index eef2f89..ec26f99 100644
--- a/configs/cm_t54_defconfig
+++ b/configs/cm_t54_defconfig
@@ -43,4 +43,5 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/colibri_imx6_defconfig b/configs/colibri_imx6_defconfig
index fcb7c53..d8307b0 100644
--- a/configs/colibri_imx6_defconfig
+++ b/configs/colibri_imx6_defconfig
@@ -49,6 +49,7 @@
 CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4000
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_OF_LIBFDT_OVERLAY=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/colibri_imx6_nospl_defconfig b/configs/colibri_imx6_nospl_defconfig
index fbf9306..df24f17 100644
--- a/configs/colibri_imx6_nospl_defconfig
+++ b/configs/colibri_imx6_nospl_defconfig
@@ -42,5 +42,6 @@
 CONFIG_G_DNL_MANUFACTURER="Toradex"
 CONFIG_G_DNL_VENDOR_NUM=0x1b67
 CONFIG_G_DNL_PRODUCT_NUM=0x4000
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/ds109_defconfig b/configs/ds109_defconfig
index 46ac567..d8f373b 100644
--- a/configs/ds109_defconfig
+++ b/configs/ds109_defconfig
@@ -12,7 +12,7 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_DATE=y
-CONFIG_DOS_PARTITION=y
+CONFIG_CMD_FAT=y
 CONFIG_ISO_PARTITION=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
diff --git a/configs/duovero_defconfig b/configs/duovero_defconfig
index 9e0ac20..b945875 100644
--- a/configs/duovero_defconfig
+++ b/configs/duovero_defconfig
@@ -28,4 +28,5 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/gurnard_defconfig b/configs/gurnard_defconfig
index 2c6f524..d43fd14 100644
--- a/configs/gurnard_defconfig
+++ b/configs/gurnard_defconfig
@@ -18,6 +18,7 @@
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
diff --git a/configs/hikey_defconfig b/configs/hikey_defconfig
index b112be2..5981d2f 100644
--- a/configs/hikey_defconfig
+++ b/configs/hikey_defconfig
@@ -16,3 +16,4 @@
 CONFIG_MMC_DW_K3=y
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/igep0020_defconfig b/configs/igep0020_defconfig
index c81dfdf..6e0a5e9 100644
--- a/configs/igep0020_defconfig
+++ b/configs/igep0020_defconfig
@@ -47,5 +47,6 @@
 CONFIG_LED_STATUS_BOOT=0
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_FDT_FIXUP_PARTITIONS=y
diff --git a/configs/igep0030_defconfig b/configs/igep0030_defconfig
index 9098451..5908a35 100644
--- a/configs/igep0030_defconfig
+++ b/configs/igep0030_defconfig
@@ -36,5 +36,6 @@
 CONFIG_LED_STATUS_BOOT=0
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_FDT_FIXUP_PARTITIONS=y
diff --git a/configs/igep0032_defconfig b/configs/igep0032_defconfig
index 56be1a1..53399e7 100644
--- a/configs/igep0032_defconfig
+++ b/configs/igep0032_defconfig
@@ -28,5 +28,6 @@
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 CONFIG_FDT_FIXUP_PARTITIONS=y
diff --git a/configs/kzm9g_defconfig b/configs/kzm9g_defconfig
index bc3e5d9..a884e5a 100644
--- a/configs/kzm9g_defconfig
+++ b/configs/kzm9g_defconfig
@@ -13,4 +13,5 @@
 CONFIG_CMD_FAT=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
+# CONFIG_FAT_WRITE is not set
 CONFIG_OF_LIBFDT=y
diff --git a/configs/ls1021aiot_qspi_defconfig b/configs/ls1021aiot_qspi_defconfig
index 3deda48..3628367 100644
--- a/configs/ls1021aiot_qspi_defconfig
+++ b/configs/ls1021aiot_qspi_defconfig
@@ -4,7 +4,7 @@
 CONFIG_SYS_EXTRA_OPTIONS="QSPI_BOOT"
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_CMD_GPT=y
-CONFIG_DOS_PARTITION=y
+CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 CONFIG_FSL_CAAM=y
diff --git a/configs/ls1021aiot_sdcard_defconfig b/configs/ls1021aiot_sdcard_defconfig
index 089ea34..e412024 100644
--- a/configs/ls1021aiot_sdcard_defconfig
+++ b/configs/ls1021aiot_sdcard_defconfig
@@ -7,7 +7,7 @@
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0xe8
 CONFIG_CMD_GPT=y
-CONFIG_DOS_PARTITION=y
+CONFIG_CMD_FAT=y
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
diff --git a/configs/m28evk_defconfig b/configs/m28evk_defconfig
index fbd106e..944e39d 100644
--- a/configs/m28evk_defconfig
+++ b/configs/m28evk_defconfig
@@ -41,4 +41,5 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/m53evk_defconfig b/configs/m53evk_defconfig
index a7bf297..a33a601 100644
--- a/configs/m53evk_defconfig
+++ b/configs/m53evk_defconfig
@@ -37,4 +37,5 @@
 CONFIG_USB=y
 CONFIG_USB_STORAGE=y
 # CONFIG_VIDEO_SW_CURSOR is not set
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/ma5d4evk_defconfig b/configs/ma5d4evk_defconfig
index a267c9a5..eca10d3 100644
--- a/configs/ma5d4evk_defconfig
+++ b/configs/ma5d4evk_defconfig
@@ -40,5 +40,6 @@
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
 # CONFIG_EFI_LOADER is not set
diff --git a/configs/mx7ulp_evk_defconfig b/configs/mx7ulp_evk_defconfig
index c457d34..6ab7cb7 100644
--- a/configs/mx7ulp_evk_defconfig
+++ b/configs/mx7ulp_evk_defconfig
@@ -7,6 +7,7 @@
 CONFIG_CMD_MMC=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_GPIO=y
+CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 # CONFIG_BLK is not set
diff --git a/configs/mx7ulp_evk_plugin_defconfig b/configs/mx7ulp_evk_plugin_defconfig
index c457d34..6ab7cb7 100644
--- a/configs/mx7ulp_evk_plugin_defconfig
+++ b/configs/mx7ulp_evk_plugin_defconfig
@@ -7,6 +7,7 @@
 CONFIG_CMD_MMC=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_GPIO=y
+CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 # CONFIG_BLK is not set
diff --git a/configs/novena_defconfig b/configs/novena_defconfig
index 49b963c..3c7589b 100644
--- a/configs/novena_defconfig
+++ b/configs/novena_defconfig
@@ -39,4 +39,5 @@
 CONFIG_USB_GADGET=y
 CONFIG_CI_UDC=y
 # CONFIG_VIDEO_SW_CURSOR is not set
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap3_beagle_defconfig b/configs/omap3_beagle_defconfig
index 64971c1..eb780ab 100644
--- a/configs/omap3_beagle_defconfig
+++ b/configs/omap3_beagle_defconfig
@@ -42,4 +42,5 @@
 CONFIG_G_DNL_MANUFACTURER="TI"
 CONFIG_G_DNL_VENDOR_NUM=0x0451
 CONFIG_G_DNL_PRODUCT_NUM=0xd022
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap3_overo_defconfig b/configs/omap3_overo_defconfig
index 3be4a1d..e360780 100644
--- a/configs/omap3_overo_defconfig
+++ b/configs/omap3_overo_defconfig
@@ -44,4 +44,5 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap3_pandora_defconfig b/configs/omap3_pandora_defconfig
index 3aa7ba3..d219ad0 100644
--- a/configs/omap3_pandora_defconfig
+++ b/configs/omap3_pandora_defconfig
@@ -24,4 +24,5 @@
 CONFIG_CMD_UBI=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap3_zoom1_defconfig b/configs/omap3_zoom1_defconfig
index c985c86..8c0e830 100644
--- a/configs/omap3_zoom1_defconfig
+++ b/configs/omap3_zoom1_defconfig
@@ -30,4 +30,5 @@
 CONFIG_EFI_PARTITION=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap4_panda_defconfig b/configs/omap4_panda_defconfig
index 8fdf7607..3d91f13 100644
--- a/configs/omap4_panda_defconfig
+++ b/configs/omap4_panda_defconfig
@@ -27,4 +27,5 @@
 CONFIG_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap4_sdp4430_defconfig b/configs/omap4_sdp4430_defconfig
index 7229142..dda4030 100644
--- a/configs/omap4_sdp4430_defconfig
+++ b/configs/omap4_sdp4430_defconfig
@@ -25,4 +25,5 @@
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omap5_uevm_defconfig b/configs/omap5_uevm_defconfig
index bd799b7..f5ac38b 100644
--- a/configs/omap5_uevm_defconfig
+++ b/configs/omap5_uevm_defconfig
@@ -48,4 +48,5 @@
 CONFIG_G_DNL_MANUFACTURER="Texas Instruments"
 CONFIG_G_DNL_VENDOR_NUM=0x0403
 CONFIG_G_DNL_PRODUCT_NUM=0xbd00
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig
index 354438e..cb351e4 100644
--- a/configs/omapl138_lcdk_defconfig
+++ b/configs/omapl138_lcdk_defconfig
@@ -30,4 +30,5 @@
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_SYS_NS16550=y
+# CONFIG_FAT_WRITE is not set
 CONFIG_OF_LIBFDT=y
diff --git a/configs/pcm051_rev1_defconfig b/configs/pcm051_rev1_defconfig
index f278075..6b4e229 100644
--- a/configs/pcm051_rev1_defconfig
+++ b/configs/pcm051_rev1_defconfig
@@ -57,4 +57,5 @@
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/pcm051_rev3_defconfig b/configs/pcm051_rev3_defconfig
index 5fa60b7..6baca96 100644
--- a/configs/pcm051_rev3_defconfig
+++ b/configs/pcm051_rev3_defconfig
@@ -57,4 +57,5 @@
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/pengwyn_defconfig b/configs/pengwyn_defconfig
index 6d4d8ad..8693dea 100644
--- a/configs/pengwyn_defconfig
+++ b/configs/pengwyn_defconfig
@@ -56,4 +56,5 @@
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/pepper_defconfig b/configs/pepper_defconfig
index a7d67bf..4b122d6 100644
--- a/configs/pepper_defconfig
+++ b/configs/pepper_defconfig
@@ -40,4 +40,5 @@
 CONFIG_EFI_PARTITION=y
 CONFIG_MMC_OMAP_HS=y
 CONFIG_SYS_NS16550=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/pic32mzdask_defconfig b/configs/pic32mzdask_defconfig
index 9eb8076..688b989 100644
--- a/configs/pic32mzdask_defconfig
+++ b/configs/pic32mzdask_defconfig
@@ -42,5 +42,6 @@
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_MUSB_PIC32=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
 CONFIG_USE_TINY_PRINTF=y
 CONFIG_CMD_DHRYSTONE=y
diff --git a/configs/picosam9g45_defconfig b/configs/picosam9g45_defconfig
index f34dfe9..aa61e4b 100644
--- a/configs/picosam9g45_defconfig
+++ b/configs/picosam9g45_defconfig
@@ -35,4 +35,5 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
 CONFIG_OF_LIBFDT=y
diff --git a/configs/r8a7795_salvator-x_defconfig b/configs/r8a7795_salvator-x_defconfig
index 60e0b72..1eba299 100644
--- a/configs/r8a7795_salvator-x_defconfig
+++ b/configs/r8a7795_salvator-x_defconfig
@@ -16,6 +16,7 @@
 CONFIG_CMD_NFS=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
+CONFIG_CMD_FAT=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_USB=y
 CONFIG_USB=y
diff --git a/configs/r8a7796_salvator-x_defconfig b/configs/r8a7796_salvator-x_defconfig
index d6f1840..5bd762d 100644
--- a/configs/r8a7796_salvator-x_defconfig
+++ b/configs/r8a7796_salvator-x_defconfig
@@ -16,6 +16,7 @@
 CONFIG_CMD_NFS=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
+CONFIG_CMD_FAT=y
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_USB=y
 CONFIG_USB=y
diff --git a/configs/s5p_goni_defconfig b/configs/s5p_goni_defconfig
index c3e0457..8aeab15 100644
--- a/configs/s5p_goni_defconfig
+++ b/configs/s5p_goni_defconfig
@@ -35,3 +35,4 @@
 CONFIG_G_DNL_MANUFACTURER="Samsung"
 CONFIG_G_DNL_VENDOR_NUM=0x04e8
 CONFIG_G_DNL_PRODUCT_NUM=0x6601
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d2_ptc_nandflash_defconfig b/configs/sama5d2_ptc_nandflash_defconfig
index 239bfdd..66edd31 100644
--- a/configs/sama5d2_ptc_nandflash_defconfig
+++ b/configs/sama5d2_ptc_nandflash_defconfig
@@ -16,6 +16,7 @@
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_SF=y
 # CONFIG_CMD_FPGA is not set
+CONFIG_CMD_FAT=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_USB=y
diff --git a/configs/sama5d2_ptc_spiflash_defconfig b/configs/sama5d2_ptc_spiflash_defconfig
index 21014b9..8771e08 100644
--- a/configs/sama5d2_ptc_spiflash_defconfig
+++ b/configs/sama5d2_ptc_spiflash_defconfig
@@ -17,6 +17,7 @@
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_SF=y
 # CONFIG_CMD_FPGA is not set
+CONFIG_CMD_FAT=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_USB=y
diff --git a/configs/sama5d2_xplained_mmc_defconfig b/configs/sama5d2_xplained_mmc_defconfig
index f064a43..b60e00c 100644
--- a/configs/sama5d2_xplained_mmc_defconfig
+++ b/configs/sama5d2_xplained_mmc_defconfig
@@ -74,3 +74,4 @@
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d36ek_cmp_mmc_defconfig b/configs/sama5d36ek_cmp_mmc_defconfig
index 32a21f9..8c34e64 100644
--- a/configs/sama5d36ek_cmp_mmc_defconfig
+++ b/configs/sama5d36ek_cmp_mmc_defconfig
@@ -49,3 +49,4 @@
 CONFIG_DM_SPI=y
 CONFIG_ATMEL_SPI=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d36ek_cmp_nandflash_defconfig b/configs/sama5d36ek_cmp_nandflash_defconfig
index 34c4de1..9c72a67 100644
--- a/configs/sama5d36ek_cmp_nandflash_defconfig
+++ b/configs/sama5d36ek_cmp_nandflash_defconfig
@@ -49,3 +49,4 @@
 CONFIG_DM_SPI=y
 CONFIG_ATMEL_SPI=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d36ek_cmp_spiflash_defconfig b/configs/sama5d36ek_cmp_spiflash_defconfig
index 42c3111..10db9c9 100644
--- a/configs/sama5d36ek_cmp_spiflash_defconfig
+++ b/configs/sama5d36ek_cmp_spiflash_defconfig
@@ -49,3 +49,4 @@
 CONFIG_DM_SPI=y
 CONFIG_ATMEL_SPI=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d3_xplained_mmc_defconfig b/configs/sama5d3_xplained_mmc_defconfig
index d28d1d9..533dbcd 100644
--- a/configs/sama5d3_xplained_mmc_defconfig
+++ b/configs/sama5d3_xplained_mmc_defconfig
@@ -65,3 +65,4 @@
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d3_xplained_nandflash_defconfig b/configs/sama5d3_xplained_nandflash_defconfig
index 6f24324..d00ef6a 100644
--- a/configs/sama5d3_xplained_nandflash_defconfig
+++ b/configs/sama5d3_xplained_nandflash_defconfig
@@ -62,3 +62,4 @@
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d3xek_mmc_defconfig b/configs/sama5d3xek_mmc_defconfig
index 994bc04..7471985 100644
--- a/configs/sama5d3xek_mmc_defconfig
+++ b/configs/sama5d3xek_mmc_defconfig
@@ -74,3 +74,4 @@
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d3xek_nandflash_defconfig b/configs/sama5d3xek_nandflash_defconfig
index dd0263c..a75767b 100644
--- a/configs/sama5d3xek_nandflash_defconfig
+++ b/configs/sama5d3xek_nandflash_defconfig
@@ -69,3 +69,4 @@
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d3xek_spiflash_defconfig b/configs/sama5d3xek_spiflash_defconfig
index 069fbcc..1d8491c 100644
--- a/configs/sama5d3xek_spiflash_defconfig
+++ b/configs/sama5d3xek_spiflash_defconfig
@@ -70,3 +70,4 @@
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d4_xplained_mmc_defconfig b/configs/sama5d4_xplained_mmc_defconfig
index 4fc44e5..e23df47 100644
--- a/configs/sama5d4_xplained_mmc_defconfig
+++ b/configs/sama5d4_xplained_mmc_defconfig
@@ -68,3 +68,4 @@
 CONFIG_USB_STORAGE=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/sama5d4ek_mmc_defconfig b/configs/sama5d4ek_mmc_defconfig
index 204d128..68da5f9 100644
--- a/configs/sama5d4ek_mmc_defconfig
+++ b/configs/sama5d4ek_mmc_defconfig
@@ -72,3 +72,4 @@
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_ATMEL_USBA=y
 CONFIG_LCD=y
+CONFIG_FAT_WRITE=y
diff --git a/configs/zynq_zc770_xm011_defconfig b/configs/zynq_zc770_xm011_defconfig
index dc49372..148f703 100644
--- a/configs/zynq_zc770_xm011_defconfig
+++ b/configs/zynq_zc770_xm011_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+# CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm011"
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
diff --git a/configs/zynq_zc770_xm012_defconfig b/configs/zynq_zc770_xm012_defconfig
index 16cd613..943efdb 100644
--- a/configs/zynq_zc770_xm012_defconfig
+++ b/configs/zynq_zc770_xm012_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+# CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm012"
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
diff --git a/configs/zynq_zc770_xm013_defconfig b/configs/zynq_zc770_xm013_defconfig
index 4396db0..5c02910 100644
--- a/configs/zynq_zc770_xm013_defconfig
+++ b/configs/zynq_zc770_xm013_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQ=y
 CONFIG_SYS_TEXT_BASE=0x4000000
+# CONFIG_SPL_FAT_SUPPORT is not set
 CONFIG_DEFAULT_DEVICE_TREE="zynq-zc770-xm013"
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
diff --git a/include/configs/apalis-tk1.h b/include/configs/apalis-tk1.h
index 2c49729..c3cade9 100644
--- a/include/configs/apalis-tk1.h
+++ b/include/configs/apalis-tk1.h
@@ -50,9 +50,6 @@
 #define CONFIG_TFTP_BLOCKSIZE		16352
 #define CONFIG_TFTP_TSIZE
 
-/* Miscellaneous commands */
-#define CONFIG_FAT_WRITE
-
 #undef CONFIG_IPADDR
 #define CONFIG_IPADDR		192.168.10.2
 #define CONFIG_NETMASK		255.255.255.0
diff --git a/include/configs/apalis_imx6.h b/include/configs/apalis_imx6.h
index 83a0915..8be586b 100644
--- a/include/configs/apalis_imx6.h
+++ b/include/configs/apalis_imx6.h
@@ -66,7 +66,6 @@
 
 #define CONFIG_SUPPORT_EMMC_BOOT	/* eMMC specific */
 #define CONFIG_BOUNCE_BUFFER
-#define CONFIG_FAT_WRITE
 
 #ifdef CONFIG_MX6Q
 #define CONFIG_CMD_SATA
diff --git a/include/configs/apalis_t30.h b/include/configs/apalis_t30.h
index cdb50cc..9772d8b 100644
--- a/include/configs/apalis_t30.h
+++ b/include/configs/apalis_t30.h
@@ -46,9 +46,6 @@
 #define CONFIG_TFTP_BLOCKSIZE		16352
 #define CONFIG_TFTP_TSIZE
 
-/* Miscellaneous commands */
-#define CONFIG_FAT_WRITE
-
 /* Increase console I/O buffer size */
 #undef CONFIG_SYS_CBSIZE
 #define CONFIG_SYS_CBSIZE		1024
diff --git a/include/configs/at91-sama5_common.h b/include/configs/at91-sama5_common.h
index dbd4d84..dea8130 100644
--- a/include/configs/at91-sama5_common.h
+++ b/include/configs/at91-sama5_common.h
@@ -54,7 +54,6 @@
 #else
 /* u-boot env in sd/mmc card */
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define FAT_ENV_INTERFACE	"mmc"
 #define FAT_ENV_DEVICE_AND_PART	"0"
 #define FAT_ENV_FILE		"uboot.env"
diff --git a/include/configs/at91sam9m10g45ek.h b/include/configs/at91sam9m10g45ek.h
index 010ebdb..a0c5b9a 100644
--- a/include/configs/at91sam9m10g45ek.h
+++ b/include/configs/at91sam9m10g45ek.h
@@ -115,7 +115,6 @@
 #define FAT_ENV_DEVICE_AND_PART	"0"
 #define FAT_ENV_FILE		"uboot.env"
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define CONFIG_ENV_SIZE		0x4000
 
 #define CONFIG_BOOTARGS		"console=ttyS0,115200 " \
diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index 411d741..50ddbd6 100644
--- a/include/configs/at91sam9n12ek.h
+++ b/include/configs/at91sam9n12ek.h
@@ -160,7 +160,6 @@
 #else
 /* Use file in FAT file to save environment */
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define FAT_ENV_INTERFACE		"mmc"
 #define FAT_ENV_FILE			"uboot.env"
 #define FAT_ENV_DEVICE_AND_PART		"0"
diff --git a/include/configs/at91sam9rlek.h b/include/configs/at91sam9rlek.h
index 7dcf791..8a8eb7c 100644
--- a/include/configs/at91sam9rlek.h
+++ b/include/configs/at91sam9rlek.h
@@ -127,7 +127,6 @@
 
 /* bootstrap + u-boot + env + linux in mmc */
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define FAT_ENV_INTERFACE	"mmc"
 #define FAT_ENV_FILE		"uboot.env"
 #define FAT_ENV_DEVICE_AND_PART	"0"
diff --git a/include/configs/at91sam9x5ek.h b/include/configs/at91sam9x5ek.h
index 33cc5fc..fd2dbed 100644
--- a/include/configs/at91sam9x5ek.h
+++ b/include/configs/at91sam9x5ek.h
@@ -147,7 +147,6 @@
 #else /* CONFIG_SYS_USE_MMC */
 /* bootstrap + u-boot + env + linux in mmc */
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define FAT_ENV_INTERFACE	"mmc"
 #define FAT_ENV_FILE		"uboot.env"
 #define FAT_ENV_DEVICE_AND_PART "0"
diff --git a/include/configs/bcm23550_w1d.h b/include/configs/bcm23550_w1d.h
index 9a36a4c..02ae65f 100644
--- a/include/configs/bcm23550_w1d.h
+++ b/include/configs/bcm23550_w1d.h
@@ -109,9 +109,6 @@
 /* Initial upstream - boot to cmd prompt only */
 #define CONFIG_BOOTCOMMAND		""
 
-/* Commands */
-#define CONFIG_FAT_WRITE
-
 #undef CONFIG_USB_GADGET_VBUS_DRAW
 #define CONFIG_USB_GADGET_VBUS_DRAW	0
 #define CONFIG_USBID_ADDR		0x34052c46
diff --git a/include/configs/bcm28155_ap.h b/include/configs/bcm28155_ap.h
index bb61e5b..5a85f7f 100644
--- a/include/configs/bcm28155_ap.h
+++ b/include/configs/bcm28155_ap.h
@@ -108,9 +108,6 @@
 /* Initial upstream - boot to cmd prompt only */
 #define CONFIG_BOOTCOMMAND		""
 
-/* Commands */
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_USBID_ADDR		0x34052c46
 
 #endif /* __BCM28155_AP_H */
diff --git a/include/configs/bcm_ep_board.h b/include/configs/bcm_ep_board.h
index fa7eff5..2afbbea 100644
--- a/include/configs/bcm_ep_board.h
+++ b/include/configs/bcm_ep_board.h
@@ -62,9 +62,6 @@
 
 #define CONFIG_MX_CYCLIC
 
-/* Commands */
-#define CONFIG_FAT_WRITE
-
 /* Enable Time Command */
 
 /* Misc utility code */
diff --git a/include/configs/brppt1.h b/include/configs/brppt1.h
index 521d097..10e8f88 100644
--- a/include/configs/brppt1.h
+++ b/include/configs/brppt1.h
@@ -276,7 +276,6 @@
  * enabled a number of useful commands and support.
  */
 #if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
-#define CONFIG_FAT_WRITE
 #define CONFIG_FS_EXT4
 #define CONFIG_EXT4_WRITE
 #endif /* CONFIG_MMC, ... */
diff --git a/include/configs/brxre1.h b/include/configs/brxre1.h
index 9984689..5814d74 100644
--- a/include/configs/brxre1.h
+++ b/include/configs/brxre1.h
@@ -118,12 +118,5 @@
 #define CONFIG_ENV_OFFSET		0x40000	/* TODO: Adresse definieren */
 #define CONFIG_ENV_OFFSET_REDUND	(CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE)
 #define CONFIG_SYS_REDUNDAND_ENVIRONMENT
-/*
- * Common filesystems support.  When we have removable storage we
- * enabled a number of useful commands and support.
- */
-#if defined(CONFIG_MMC) || defined(CONFIG_USB_STORAGE)
-#define CONFIG_FAT_WRITE
-#endif /* CONFIG_MMC, ... */
 
 #endif	/* __CONFIG_BRXRE1_H__ */
diff --git a/include/configs/colibri_imx6.h b/include/configs/colibri_imx6.h
index 8f4022a..82812e5 100644
--- a/include/configs/colibri_imx6.h
+++ b/include/configs/colibri_imx6.h
@@ -64,7 +64,6 @@
 
 #define CONFIG_SUPPORT_EMMC_BOOT	/* eMMC specific */
 #define CONFIG_BOUNCE_BUFFER
-#define CONFIG_FAT_WRITE
 
 /* Network */
 #define CONFIG_FEC_MXC
diff --git a/include/configs/colibri_t20.h b/include/configs/colibri_t20.h
index 03f6863..7355f78 100644
--- a/include/configs/colibri_t20.h
+++ b/include/configs/colibri_t20.h
@@ -67,10 +67,6 @@
 #define CONFIG_LZO
 #define CONFIG_RBTREE
 
-/* Debug commands */
-
-/* Miscellaneous commands */
-#define CONFIG_FAT_WRITE
 
 #define BOARD_EXTRA_ENV_SETTINGS \
 	"mtdparts=" MTDPARTS_DEFAULT "\0"
diff --git a/include/configs/colibri_t30.h b/include/configs/colibri_t30.h
index 853cd52..53ff33e 100644
--- a/include/configs/colibri_t30.h
+++ b/include/configs/colibri_t30.h
@@ -44,9 +44,6 @@
 #define CONFIG_TFTP_BLOCKSIZE		16352
 #define CONFIG_TFTP_TSIZE
 
-/* Miscellaneous commands */
-#define CONFIG_FAT_WRITE
-
 /* Increase console I/O buffer size */
 #undef CONFIG_SYS_CBSIZE
 #define CONFIG_SYS_CBSIZE		1024
diff --git a/include/configs/devkit8000.h b/include/configs/devkit8000.h
index c892b5f..92ce127 100644
--- a/include/configs/devkit8000.h
+++ b/include/configs/devkit8000.h
@@ -94,7 +94,6 @@
 #define CONFIG_CMD_NAND_LOCK_UNLOCK	/* nand (un)lock commands	*/
 
 #undef CONFIG_SUPPORT_RAW_INITRD
-#undef CONFIG_FAT_WRITE
 
 /* BOOTP/DHCP options */
 #define CONFIG_BOOTP_SUBNETMASK
diff --git a/include/configs/ds109.h b/include/configs/ds109.h
index 4c87436..133b2b0 100644
--- a/include/configs/ds109.h
+++ b/include/configs/ds109.h
@@ -24,7 +24,6 @@
  * Commands configuration
  */
 #define CONFIG_CMD_EXT2
-#define CONFIG_CMD_FAT
 
 /*
  * mv-plug-common.h should be defined after CMD configs since it used them
diff --git a/include/configs/etamin.h b/include/configs/etamin.h
index a0152a4..1662dbf 100644
--- a/include/configs/etamin.h
+++ b/include/configs/etamin.h
@@ -87,8 +87,6 @@
 	"led4=60,0,1\0" \
 	"led5=63,0,1\0"
 
-#undef CONFIG_CMD_FAT
-
 /* Physical Memory Map */
 #define CONFIG_MAX_RAM_BANK_SIZE       (1024 << 20)    /* 1GB */
 
diff --git a/include/configs/exynos-common.h b/include/configs/exynos-common.h
index ade66a4..031586b 100644
--- a/include/configs/exynos-common.h
+++ b/include/configs/exynos-common.h
@@ -41,9 +41,6 @@
 /* PWM */
 #define CONFIG_PWM
 
-/* Command definition*/
-#define CONFIG_FAT_WRITE
-
 /* Miscellaneous configurable options */
 #define CONFIG_SYS_CBSIZE		1024	/* Console I/O Buffer Size */
 #define CONFIG_SYS_PBSIZE		1024	/* Print Buffer Size */
diff --git a/include/configs/hikey.h b/include/configs/hikey.h
index 0fb6fb3..2b4fec4 100644
--- a/include/configs/hikey.h
+++ b/include/configs/hikey.h
@@ -111,7 +111,6 @@
 #define FAT_ENV_INTERFACE               "mmc"
 #define FAT_ENV_DEVICE_AND_PART         "1:1"
 #define FAT_ENV_FILE                    "uboot.env"
-#define CONFIG_FAT_WRITE
 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 
 /* Monitor Command Prompt */
diff --git a/include/configs/ls1021aiot.h b/include/configs/ls1021aiot.h
index d6839c0..c1ec2d4 100644
--- a/include/configs/ls1021aiot.h
+++ b/include/configs/ls1021aiot.h
@@ -158,8 +158,6 @@
 #define CONFIG_SYS_SCSI_MAX_DEVICE	(CONFIG_SYS_SCSI_MAX_SCSI_ID * \
 		CONFIG_SYS_SCSI_MAX_LUN)
 
-#define CONFIG_CMD_FAT
-
 /* SPI */
 #if defined(CONFIG_QSPI_BOOT) || defined(CONFIG_SD_BOOT_QSPI)
 #define CONFIG_SPI_FLASH_SPANSION
diff --git a/include/configs/ls1043ardb.h b/include/configs/ls1043ardb.h
index 2647b15..51e7624 100644
--- a/include/configs/ls1043ardb.h
+++ b/include/configs/ls1043ardb.h
@@ -302,9 +302,6 @@
 #define CONFIG_LIBATA
 #define CONFIG_SCSI_AHCI
 #define CONFIG_CMD_SCSI
-#ifndef CONFIG_CMD_FAT
-#define CONFIG_CMD_FAT
-#endif
 #ifndef CONFIG_CMD_EXT2
 #define CONFIG_CMD_EXT2
 #endif
diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h
index c471723..8dea031 100644
--- a/include/configs/m28evk.h
+++ b/include/configs/m28evk.h
@@ -14,8 +14,6 @@
 #define CONFIG_TIMESTAMP		/* Print image info with timestamp */
 
 /* U-Boot Commands */
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_NAND_TRIMFFS
 
diff --git a/include/configs/m53evk.h b/include/configs/m53evk.h
index b237cea..5181225 100644
--- a/include/configs/m53evk.h
+++ b/include/configs/m53evk.h
@@ -20,8 +20,6 @@
 /*
  * U-Boot Commands
  */
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_CMD_NAND
 #define CONFIG_CMD_NAND_TRIMFFS
 #define CONFIG_CMD_SATA
diff --git a/include/configs/ma5d4evk.h b/include/configs/ma5d4evk.h
index 6dc1fb0..bb66140 100644
--- a/include/configs/ma5d4evk.h
+++ b/include/configs/ma5d4evk.h
@@ -15,11 +15,6 @@
 #define CONFIG_SYS_USE_SERIALFLASH	1
 
 /*
- * U-Boot Commands
- */
-#define CONFIG_FAT_WRITE
-
-/*
  * Memory configurations
  */
 #define CONFIG_NR_DRAM_BANKS		1
diff --git a/include/configs/mx7ulp_evk.h b/include/configs/mx7ulp_evk.h
index 37f365d..288a889 100644
--- a/include/configs/mx7ulp_evk.h
+++ b/include/configs/mx7ulp_evk.h
@@ -45,9 +45,6 @@
 #define CONFIG_ENV_IS_IN_MMC
 #define CONFIG_ENV_SIZE			SZ_8K
 
-#define CONFIG_CMD_FAT
-#define CONFIG_DOS_PARTITION
-
 /* Using ULP WDOG for reset */
 #define WDOG_BASE_ADDR			WDG1_RBASE
 
diff --git a/include/configs/novena.h b/include/configs/novena.h
index 6cb1807..1f1bf15 100644
--- a/include/configs/novena.h
+++ b/include/configs/novena.h
@@ -17,7 +17,6 @@
 #include "mx6_common.h"
 
 /* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_CMD_PCI
 #define CONFIG_CMD_SATA
 
diff --git a/include/configs/pic32mzdask.h b/include/configs/pic32mzdask.h
index 2dcc6c4..c5bfdec 100644
--- a/include/configs/pic32mzdask.h
+++ b/include/configs/pic32mzdask.h
@@ -90,8 +90,6 @@
  */
 /* FAT FS */
 #define CONFIG_SUPPORT_VFAT
-#define CONFIG_FS_FAT
-#define CONFIG_FAT_WRITE
 
 /* EXT4 FS */
 #define CONFIG_FS_EXT4
diff --git a/include/configs/picosam9g45.h b/include/configs/picosam9g45.h
index 998a7a3..c83e559 100644
--- a/include/configs/picosam9g45.h
+++ b/include/configs/picosam9g45.h
@@ -116,7 +116,6 @@
 #define FAT_ENV_DEVICE_AND_PART	"0"
 #define FAT_ENV_FILE		"uboot.env"
 #define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
 #define CONFIG_ENV_SIZE		0x4000
 
 #define CONFIG_BOOTARGS		"console=ttyS0,115200 " \
diff --git a/include/configs/rcar-gen2-common.h b/include/configs/rcar-gen2-common.h
index 3a719c0..365950d 100644
--- a/include/configs/rcar-gen2-common.h
+++ b/include/configs/rcar-gen2-common.h
@@ -14,7 +14,6 @@
 #define CONFIG_CMD_SDRAM
 
 /* Support File sytems */
-#define CONFIG_FAT_WRITE
 #define CONFIG_SUPPORT_VFAT
 #define CONFIG_FS_EXT4
 #define CONFIG_EXT4_WRITE
diff --git a/include/configs/rcar-gen3-common.h b/include/configs/rcar-gen3-common.h
index e73bc61..8da3e7a 100644
--- a/include/configs/rcar-gen3-common.h
+++ b/include/configs/rcar-gen3-common.h
@@ -13,7 +13,6 @@
 #include <asm/arch/rmobile.h>
 
 #define CONFIG_CMD_SDRAM
-#define CONFIG_CMD_FAT
 #define CONFIG_CMD_EXT2
 #define CONFIG_CMD_EXT4
 #define CONFIG_CMD_EXT4_WRITE
@@ -24,7 +23,6 @@
 #define CONFIG_SUPPORT_RAW_INITRD
 
 /* Support File sytems */
-#define CONFIG_FAT_WRITE
 #define CONFIG_SUPPORT_VFAT
 #define CONFIG_FS_EXT4
 #define CONFIG_EXT4_WRITE
diff --git a/include/configs/rk3036_common.h b/include/configs/rk3036_common.h
index 2893f80..836c5e3 100644
--- a/include/configs/rk3036_common.h
+++ b/include/configs/rk3036_common.h
@@ -36,8 +36,6 @@
 /* MMC/SD IP block */
 #define CONFIG_BOUNCE_BUFFER
 
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_SYS_SDRAM_BASE		0x60000000
 #define CONFIG_NR_DRAM_BANKS		1
 #define SDRAM_BANK_SIZE			(512UL << 20UL)
diff --git a/include/configs/rk3188_common.h b/include/configs/rk3188_common.h
index 81a1553..a1e0eb7 100644
--- a/include/configs/rk3188_common.h
+++ b/include/configs/rk3188_common.h
@@ -61,8 +61,6 @@
 /* MMC/SD IP block */
 #define CONFIG_BOUNCE_BUFFER
 
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_SYS_SDRAM_BASE		0x60000000
 #define CONFIG_NR_DRAM_BANKS		1
 #define SDRAM_BANK_SIZE			(2UL << 30)
diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
index 4cf71fa..ecf2675 100644
--- a/include/configs/rk3288_common.h
+++ b/include/configs/rk3288_common.h
@@ -38,8 +38,6 @@
 /* MMC/SD IP block */
 #define CONFIG_BOUNCE_BUFFER
 
-#define CONFIG_FAT_WRITE
-
 /* RAW SD card / eMMC locations. */
 #define CONFIG_SYS_SPI_U_BOOT_OFFS	(128 << 10)
 
diff --git a/include/configs/rk3328_common.h b/include/configs/rk3328_common.h
index b0dcd48..7ccbc9b 100644
--- a/include/configs/rk3328_common.h
+++ b/include/configs/rk3328_common.h
@@ -28,8 +28,6 @@
 #define CONFIG_BOUNCE_BUFFER
 
 #define CONFIG_SUPPORT_VFAT
-#define CONFIG_FS_FAT
-#define CONFIG_FAT_WRITE
 #define CONFIG_FS_EXT4
 
 /* RAW SD card / eMMC locations. */
diff --git a/include/configs/rk3399_common.h b/include/configs/rk3399_common.h
index 49f56f2..7a8a442 100644
--- a/include/configs/rk3399_common.h
+++ b/include/configs/rk3399_common.h
@@ -43,8 +43,6 @@
 #define CONFIG_ROCKCHIP_SDHCI_MAX_FREQ	200000000
 
 #define CONFIG_SUPPORT_VFAT
-#define CONFIG_FS_FAT
-#define CONFIG_FAT_WRITE
 #define CONFIG_FS_EXT4
 
 /* RAW SD card / eMMC locations. */
diff --git a/include/configs/rpi.h b/include/configs/rpi.h
index 7b9017f..d715eaa 100644
--- a/include/configs/rpi.h
+++ b/include/configs/rpi.h
@@ -97,7 +97,6 @@
 #define FAT_ENV_INTERFACE		"mmc"
 #define FAT_ENV_DEVICE_AND_PART		"0:1"
 #define FAT_ENV_FILE			"uboot.env"
-#define CONFIG_FAT_WRITE
 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 #define CONFIG_SYS_LOAD_ADDR		0x1000000
 #define CONFIG_PREBOOT			"usb start"
diff --git a/include/configs/s5p_goni.h b/include/configs/s5p_goni.h
index e49b3d9..c328e43 100644
--- a/include/configs/s5p_goni.h
+++ b/include/configs/s5p_goni.h
@@ -210,7 +210,6 @@
 #define CONFIG_SYS_ONENAND_BASE		0xB0000000
 
 /* write support for filesystems */
-#define CONFIG_FAT_WRITE
 #define CONFIG_EXT4_WRITE
 
 /* GPT */
diff --git a/include/configs/sama5d2_ptc.h b/include/configs/sama5d2_ptc.h
index 57fa67d..7607f94 100644
--- a/include/configs/sama5d2_ptc.h
+++ b/include/configs/sama5d2_ptc.h
@@ -77,10 +77,6 @@
 #define CONFIG_USB_ETH_RNDIS
 #define CONFIG_USBNET_MANUFACTURER      "Atmel SAMA5D2_PTC"
 
-#if defined(CONFIG_CMD_USB)
-#define CONFIG_CMD_FAT
-#endif
-
 /* Ethernet Hardware */
 #define CONFIG_MACB
 #define CONFIG_RMII
diff --git a/include/configs/sama5d3_xplained.h b/include/configs/sama5d3_xplained.h
index 074c756..fbe26ca 100644
--- a/include/configs/sama5d3_xplained.h
+++ b/include/configs/sama5d3_xplained.h
@@ -74,10 +74,6 @@
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	2
 #endif
 
-#if defined(CONFIG_CMD_USB) || defined(CONFIG_CMD_MMC)
-#define CONFIG_FAT_WRITE
-#endif
-
 #define CONFIG_SYS_LOAD_ADDR			0x22000000 /* load address */
 
 #if CONFIG_SYS_USE_NANDFLASH
diff --git a/include/configs/sama5d3xek.h b/include/configs/sama5d3xek.h
index 9540a4a..891d6a0 100644
--- a/include/configs/sama5d3xek.h
+++ b/include/configs/sama5d3xek.h
@@ -101,10 +101,6 @@
 #define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS	3
 #endif
 
-#if defined(CONFIG_CMD_USB) || defined(CONFIG_CMD_MMC)
-#define CONFIG_FAT_WRITE
-#endif
-
 #define CONFIG_SYS_LOAD_ADDR			0x22000000 /* load address */
 
 #ifdef CONFIG_SYS_USE_SERIALFLASH
diff --git a/include/configs/sandbox.h b/include/configs/sandbox.h
index fbbd6cd..31ceb54 100644
--- a/include/configs/sandbox.h
+++ b/include/configs/sandbox.h
@@ -29,8 +29,6 @@
 
 #define CONFIG_CMD_PCI
 
-#define CONFIG_FS_FAT
-#define CONFIG_FAT_WRITE
 #define CONFIG_FS_EXT4
 #define CONFIG_EXT4_WRITE
 #define CONFIG_HOST_MAX_DEVICES 4
diff --git a/include/configs/siemens-am33x-common.h b/include/configs/siemens-am33x-common.h
index 9161867..b5705b7 100644
--- a/include/configs/siemens-am33x-common.h
+++ b/include/configs/siemens-am33x-common.h
@@ -120,7 +120,6 @@
 
 #define CONFIG_SYS_MMCSD_FS_BOOT_PARTITION	1
 #define CONFIG_SPL_FS_LOAD_PAYLOAD_NAME	"u-boot.img"
-#define CONFIG_FS_FAT
 
 #define CONFIG_SPL_SPI_LOAD
 #define CONFIG_SYS_SPI_U_BOOT_OFFS	0x20000
diff --git a/include/configs/snapper9g45.h b/include/configs/snapper9g45.h
index 99b5b23..4e0b9b1 100644
--- a/include/configs/snapper9g45.h
+++ b/include/configs/snapper9g45.h
@@ -129,7 +129,6 @@
 /* Command line configuration */
 #define CONFIG_CMD_PING
 #define CONFIG_CMD_DHCP
-#define CONFIG_CMD_FAT
 #define CONFIG_CMD_USB
 #define CONFIG_CMD_MII
 #define CONFIG_CMD_MMC
diff --git a/include/configs/socfpga_arria10_socdk.h b/include/configs/socfpga_arria10_socdk.h
index 7ea780b..3b59b6a 100644
--- a/include/configs/socfpga_arria10_socdk.h
+++ b/include/configs/socfpga_arria10_socdk.h
@@ -8,8 +8,7 @@
 #define __CONFIG_SOCFGPA_ARRIA10_H__
 
 #include <asm/arch/base_addr_a10.h>
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
+
 #define CONFIG_HW_WATCHDOG
 
 /* Booting Linux */
diff --git a/include/configs/socfpga_arria5_socdk.h b/include/configs/socfpga_arria5_socdk.h
index b60d007..fe40319 100644
--- a/include/configs/socfpga_arria5_socdk.h
+++ b/include/configs/socfpga_arria5_socdk.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_cyclone5_socdk.h b/include/configs/socfpga_cyclone5_socdk.h
index dfe4980..be56521 100644
--- a/include/configs/socfpga_cyclone5_socdk.h
+++ b/include/configs/socfpga_cyclone5_socdk.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_de0_nano_soc.h b/include/configs/socfpga_de0_nano_soc.h
index dd5933d..320c585 100644
--- a/include/configs/socfpga_de0_nano_soc.h
+++ b/include/configs/socfpga_de0_nano_soc.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_de10_nano.h b/include/configs/socfpga_de10_nano.h
index 302ec20..ef693b0 100644
--- a/include/configs/socfpga_de10_nano.h
+++ b/include/configs/socfpga_de10_nano.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_de1_soc.h b/include/configs/socfpga_de1_soc.h
index 014828b..522ac74 100644
--- a/include/configs/socfpga_de1_soc.h
+++ b/include/configs/socfpga_de1_soc.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_is1.h b/include/configs/socfpga_is1.h
index 3585eeb..68403aa 100644
--- a/include/configs/socfpga_is1.h
+++ b/include/configs/socfpga_is1.h
@@ -9,8 +9,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_mcvevk.h b/include/configs/socfpga_mcvevk.h
index 2d36702..ee85708 100644
--- a/include/configs/socfpga_mcvevk.h
+++ b/include/configs/socfpga_mcvevk.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_sockit.h b/include/configs/socfpga_sockit.h
index c9fc5c9..c75acc0 100644
--- a/include/configs/socfpga_sockit.h
+++ b/include/configs/socfpga_sockit.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_socrates.h b/include/configs/socfpga_socrates.h
index 5dc9298..a08fa9f 100644
--- a/include/configs/socfpga_socrates.h
+++ b/include/configs/socfpga_socrates.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_sr1500.h b/include/configs/socfpga_sr1500.h
index 64e1595..4366061 100644
--- a/include/configs/socfpga_sr1500.h
+++ b/include/configs/socfpga_sr1500.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-#define CONFIG_FAT_WRITE
-
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/socfpga_vining_fpga.h b/include/configs/socfpga_vining_fpga.h
index 251dd0e..e2bdfb1 100644
--- a/include/configs/socfpga_vining_fpga.h
+++ b/include/configs/socfpga_vining_fpga.h
@@ -8,8 +8,6 @@
 
 #include <asm/arch/base_addr_ac5.h>
 
-/* U-Boot Commands */
-#define CONFIG_FAT_WRITE
 #define CONFIG_HW_WATCHDOG
 
 /* Memory configurations */
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index f042f0d..9b514ff 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -180,8 +180,6 @@
 
 #define CONFIG_SYS_MONITOR_LEN		(768 << 10)	/* 768 KiB */
 
-#define CONFIG_FAT_WRITE	/* enable write access */
-
 #define CONFIG_SPL_FRAMEWORK
 
 #ifndef CONFIG_ARM64		/* AArch64 FEL support is not ready yet */
diff --git a/include/configs/tegra-common-post.h b/include/configs/tegra-common-post.h
index 1a4a7e2..c03efd8 100644
--- a/include/configs/tegra-common-post.h
+++ b/include/configs/tegra-common-post.h
@@ -118,9 +118,6 @@
 #ifdef CONFIG_FS_EXT4
 #undef CONFIG_FS_EXT4
 #endif
-#ifdef CONFIG_FS_FAT
-#undef CONFIG_FS_FAT
-#endif
 
 /* remove USB */
 #ifdef CONFIG_USB_EHCI_TEGRA
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index 7ca5c0b..723435e 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -99,7 +99,6 @@
 
 #ifndef CONFIG_SPL_BUILD
 #include <config_distro_defaults.h>
-#define CONFIG_FAT_WRITE
 #endif
 
 #endif /* _TEGRA_COMMON_H_ */
diff --git a/include/configs/ti816x_evm.h b/include/configs/ti816x_evm.h
index 2303970..68eb08f 100644
--- a/include/configs/ti816x_evm.h
+++ b/include/configs/ti816x_evm.h
@@ -50,8 +50,6 @@
 
 #define CONFIG_CMD_ASKENV
 
-#define CONFIG_FS_FAT
-
 /*
  * Only one of the following two options (DDR3/DDR2) should be enabled
  * CONFIG_TI816X_EVM_DDR2
diff --git a/include/configs/ti_armv7_keystone2.h b/include/configs/ti_armv7_keystone2.h
index 77ea9b9..ac8dabd 100644
--- a/include/configs/ti_armv7_keystone2.h
+++ b/include/configs/ti_armv7_keystone2.h
@@ -196,7 +196,6 @@
 /* USB Configuration */
 #define CONFIG_USB_XHCI_KEYSTONE
 #define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	2
-#define CONFIG_FS_FAT
 #define CONFIG_USB_SS_BASE			KS2_USB_SS_BASE
 #define CONFIG_USB_HOST_XHCI_BASE		KS2_USB_HOST_XHCI_BASE
 #define CONFIG_DEV_USB_PHY_BASE			KS2_DEV_USB_PHY_BASE
diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h
index bc57e8a..e45b506 100644
--- a/include/configs/uniphier.h
+++ b/include/configs/uniphier.h
@@ -116,7 +116,6 @@
 
 /* USB */
 #define CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS	4
-#define CONFIG_FAT_WRITE
 
 /* SD/MMC */
 #define CONFIG_SUPPORT_EMMC_BOOT
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index 1b43620..c56cd8c 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -82,10 +82,6 @@
 # define FAT_ENV_INTERFACE		"mmc"
 #endif
 
-#if defined(CONFIG_MMC_SDHCI_ZYNQ) || defined(CONFIG_ZYNQMP_USB)
-# define CONFIG_FAT_WRITE
-#endif
-
 #ifdef CONFIG_NAND_ARASAN
 # define CONFIG_CMD_NAND_LOCK_UNLOCK
 # define CONFIG_SYS_MAX_NAND_DEVICE	1
diff --git a/include/configs/zynq-common.h b/include/configs/zynq-common.h
index df4765c..4b6b088 100644
--- a/include/configs/zynq-common.h
+++ b/include/configs/zynq-common.h
@@ -129,7 +129,6 @@
 
 #if defined(CONFIG_MMC_SDHCI_ZYNQ) || defined(CONFIG_ZYNQ_USB)
 # define CONFIG_SUPPORT_VFAT
-# define CONFIG_FAT_WRITE
 #endif
 
 #if defined(CONFIG_ZYNQ_I2C0) || defined(CONFIG_ZYNQ_I2C1)
diff --git a/include/fat.h b/include/fat.h
index e38f380..71879f0 100644
--- a/include/fat.h
+++ b/include/fat.h
@@ -18,9 +18,6 @@
 #define VFAT_MAXSEQ		9   /* Up to 9 of 13 2-byte UTF-16 entries */
 #define PREFETCH_BLOCKS		2
 
-#ifndef CONFIG_FS_FAT_MAX_CLUSTSIZE
-#define CONFIG_FS_FAT_MAX_CLUSTSIZE 65536
-#endif
 #define MAX_CLUSTSIZE	CONFIG_FS_FAT_MAX_CLUSTSIZE
 
 #define DIRENTSPERBLOCK	(mydata->sect_size / sizeof(dir_entry))
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index ee95359..e953168 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -854,7 +854,6 @@
 CONFIG_FASTBOOT_FLASH_NAND_DEV
 CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS
 CONFIG_FAST_FLASH_BIT
-CONFIG_FAT_WRITE
 CONFIG_FB_ADDR
 CONFIG_FB_BACKLIGHT
 CONFIG_FB_DEFERRED_IO
@@ -985,8 +984,6 @@
 CONFIG_FSMTDBLK
 CONFIG_FSNOTIFY
 CONFIG_FS_EXT4
-CONFIG_FS_FAT
-CONFIG_FS_FAT_MAX_CLUSTSIZE
 CONFIG_FS_POSIX_ACL
 CONFIG_FTAHBC020S
 CONFIG_FTAHBC020S_BASE