[U-Boot] [PATCH] dfu: Migrate to Kconfig

[Tom Rini]

Introduce a hidden USB_FUNCTION_DFU Kconfig option and select it for
CMD_DFU (as we must have the DFU command enabled to do anything DFU).
Make all of the entries in drivers/dfu/Kconfig depend on CMD_DFU and add
options for all of the back end choices that DFU can make use of.

Cc: Lukasz Majewski <l.majewski at samsung.com>
Signed-off-by: Tom Rini <trini at konsulko.com>
---
Once ack'd I'll run moveconfig.py to migrate everyone over and check for
size changes.  This will also depend on the patch I sent to change the
malloc pool size on TI parts as we otherwise will now expose the bug
about DFU_MMC being unset.
---
 cmd/Kconfig         |  1 +
 drivers/dfu/Kconfig | 28 ++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/cmd/Kconfig b/cmd/Kconfig
index d28da54ed659..26720b6e1f0d 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -404,6 +404,7 @@ config CMD_USB
 
 config CMD_DFU
 	bool "dfu"
+	select USB_FUNCTION_DFU
 	help
 	  Enables the command "dfu" which is used to have U-Boot create a DFU
 	  class device via USB.
diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
index 6b92064f0b52..56a98f5273ce 100644
--- a/drivers/dfu/Kconfig
+++ b/drivers/dfu/Kconfig
@@ -1,5 +1,9 @@
 menu "DFU support"
 
+config USB_FUNCTION_DFU
+	bool
+
+if CMD_DFU
 config DFU_TFTP
 	bool "DFU via TFTP"
 	help
@@ -7,4 +11,28 @@ config DFU_TFTP
 	  sent via TFTP boot.
 
 	  Detailed description of this feature can be found at ./doc/README.dfutftp
+
+config DFU_MMC
+	bool "MMC back end for DFU"
+	help
+	  This option enables using DFU to read and write to MMC based storage.
+
+config DFU_NAND
+	bool "NAND back end for DFU"
+	help
+	  This option enables using DFU to read and write to NAND based
+	  storage.
+
+config DFU_RAM
+	bool "RAM back end for DFU"
+	help
+	  This option enables using DFU to read and write RAM on the target.
+
+config DFU_SF
+	bool "SPI flash back end for DFU"
+	help
+	  This option enables using DFU to read and write to SPI flash based
+	  storage.
+
+endif
 endmenu
-- 
1.9.1