spl: dfu: move DFU Kconfig to SPL Kconfig

The DFU Kconfig menu entries should be part of the SPL
Kconfig file. Also avoid using the top level Makefile by
moving the config dependent build artifacts to the driver/
and driver/usb/gadget/ Makfiles.

With that, DFU can be built again in SPL if
CONFIG_SPL_DFU_SUPPORT is enabled.

Fixes: 6ad6102246 ("usb:gadget: Disallow DFU in SPL for now")

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>

Kconfig

@@ -292,33 +292,6 @@ config FIT_IMAGE_POST_PROCESS
 	  injected into the FIT creation (i.e. the blobs would have been pre-
 	  processed before being added to the FIT image).
 
-config SPL_DFU_SUPPORT
-	bool "Enable SPL with DFU to load binaries to memory device"
-	depends on USB
-	help
-	  Currently the SPL does not have capability to load the
-	  binaries or boot images to boot devices like ram,eMMC,SPI,etc.
-	  This feature enables the DFU (Device Firmware Upgarde) in SPL with
-	  RAM memory device support. The ROM code will load and execute
-	  the SPL built with dfu. The user can load binaries (u-boot/kernel) to
-	  selected device partition from host-pc using dfu-utils.
-		This feature will be useful to flash the binaries to factory
-	  or bare-metal boards using USB interface.
-
-choice
-	bool "DFU device selection"
-	depends on SPL_DFU_SUPPORT
-
-config SPL_DFU_RAM
-	bool "RAM device"
-	depends on SPL_DFU_SUPPORT
-	help
-	 select RAM/DDR memory device for loading binary images
-	 (u-boot/kernel) to the selected device partition using
-	 DFU and execute the u-boot/kernel from RAM.
-
-endchoice
-
 config SYS_CLK_FREQ
 	depends on ARC || ARCH_SUNXI
 	int "CPU clock frequency"

common/spl/Kconfig

@@ -524,6 +524,32 @@ config SPL_USB_SUPPORT
 	  config options. This enables loading from USB using a configured
 	  device.
 
+config SPL_DFU_SUPPORT
+	bool "Support DFU (Device Firmware Upgarde)"
+	depends on SPL
+	select SPL_HASH_SUPPORT
+	help
+	  This feature enables the DFU (Device Firmware Upgarde) in SPL with
+	  RAM memory device support. The ROM code will load and execute
+	  the SPL built with dfu. The user can load binaries (u-boot/kernel) to
+	  selected device partition from host-pc using dfu-utils.
+	  This feature is useful to flash the binaries to factory or bare-metal
+	  boards using USB interface.
+
+choice
+	bool "DFU device selection"
+	depends on SPL_DFU_SUPPORT
+
+config SPL_DFU_RAM
+	bool "RAM device"
+	depends on SPL_DFU_SUPPORT
+	help
+	 select RAM/DDR memory device for loading binary images
+	 (u-boot/kernel) to the selected device partition using
+	 DFU and execute the u-boot/kernel from RAM.
+
+endchoice
+
 config SPL_WATCHDOG_SUPPORT
 	bool "Support watchdog drivers"
 	depends on SPL

drivers/Makefile

@@ -34,6 +34,9 @@ obj-$(CONFIG_SPL_ETH_SUPPORT) += net/phy/
 obj-$(CONFIG_SPL_USBETH_SUPPORT) += net/phy/
 obj-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += usb/musb-new/
 obj-$(CONFIG_SPL_USBETH_SUPPORT) += usb/gadget/
+obj-$(CONFIG_SPL_DFU_SUPPORT) += usb/gadget/
+obj-$(CONFIG_SPL_DFU_SUPPORT) += usb/gadget/udc/
+obj-$(CONFIG_SPL_DFU_SUPPORT) += dfu/
 obj-$(CONFIG_SPL_WATCHDOG_SUPPORT) += watchdog/
 obj-$(CONFIG_SPL_USB_HOST_SUPPORT) += usb/host/
 obj-$(CONFIG_OMAP_USB_PHY) += usb/phy/

drivers/usb/gadget/Makefile

@@ -8,6 +8,10 @@
 obj-$(CONFIG_USB_GADGET) += epautoconf.o config.o usbstring.o
 obj-$(CONFIG_USB_ETHER) += epautoconf.o config.o usbstring.o
 
+ifdef CONFIG_SPL_BUILD
+obj-$(CONFIG_SPL_DFU_SUPPORT) += f_dfu.o
+endif
+
 # new USB gadget layer dependencies
 ifdef CONFIG_USB_GADGET
 obj-$(CONFIG_USB_GADGET_AT91) += at91_udc.o
@@ -18,13 +22,13 @@ obj-$(CONFIG_USB_GADGET_DWC2_OTG_PHY) += dwc2_udc_otg_phy.o
 obj-$(CONFIG_USB_GADGET_FOTG210) += fotg210.o
 obj-$(CONFIG_CI_UDC)	+= ci_udc.o
 obj-$(CONFIG_USB_GADGET_DOWNLOAD) += g_dnl.o
-obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o
 ifndef CONFIG_SPL_BUILD
+obj-$(CONFIG_USB_FUNCTION_THOR) += f_thor.o
 obj-$(CONFIG_USB_FUNCTION_DFU) += f_dfu.o
-endif
 obj-$(CONFIG_USB_FUNCTION_MASS_STORAGE) += f_mass_storage.o
 obj-$(CONFIG_USB_FUNCTION_FASTBOOT) += f_fastboot.o
 endif
+endif
 ifdef CONFIG_USB_ETHER
 obj-y += ether.o
 obj-$(CONFIG_USB_ETH_RNDIS) += rndis.o

include/configs/dra7xx_evm.h

@@ -134,7 +134,6 @@
 #undef CONFIG_CMD_BOOTD
 #ifdef CONFIG_SPL_DFU_SUPPORT
 #define CONFIG_SPL_LOAD_FIT_ADDRESS 0x80200000
-#define CONFIG_SPL_HASH_SUPPORT
 #define DFU_ALT_INFO_RAM \
 	"dfu_alt_info_ram=" \
 	"kernel ram 0x80200000 0x4000000;" \

scripts/Makefile.spl

@@ -66,9 +66,6 @@ endif
 
 libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
 libs-y += drivers/
-libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/dfu/
-libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/gadget/
-libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/gadget/udc/
 libs-$(CONFIG_SPL_DFU_SUPPORT) += drivers/usb/dwc3/
 libs-y += dts/
 libs-y += fs/