ARM: zynq: Enable DFU functionality in zynq

Enable DFU functionality in zynq.
This DFU functionality helps us to load linux
images on to DDR and can boot linux using bootm.
In order to load images the user should run dfu
command "dfu 0 ram 0" from u-boot prompt and then
send the images from host.

The malloc size has been increased to match the DFU
buffer requirements.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

include/configs/zynq-common.h

@@ -101,6 +101,50 @@
 # define CONFIG_USB_ULPI
 # define CONFIG_EHCI_IS_TDI
 # define CONFIG_USB_MAX_CONTROLLER_COUNT	2
+
+# define CONFIG_CI_UDC           /* ChipIdea CI13xxx UDC */
+# define CONFIG_USB_GADGET
+# define CONFIG_USB_GADGET_DUALSPEED
+# define CONFIG_USBDOWNLOAD_GADGET
+# define CONFIG_SYS_DFU_DATA_BUF_SIZE	0x600000
+# define DFU_DEFAULT_POLL_TIMEOUT	300
+# define CONFIG_DFU_FUNCTION
+# define CONFIG_DFU_RAM
+# define CONFIG_USB_GADGET_VBUS_DRAW	2
+# define CONFIG_G_DNL_VENDOR_NUM	0x03FD
+# define CONFIG_G_DNL_PRODUCT_NUM	0x0300
+# define CONFIG_G_DNL_MANUFACTURER	"Xilinx"
+# define CONFIG_USB_GADGET
+# define CONFIG_USB_CABLE_CHECK
+# define CONFIG_CMD_DFU
+# define DFU_ALT_INFO_RAM \
+	"dfu_ram_info=" \
+	"set dfu_alt_info " \
+	"${kernel_image} ram 0x3000000 0x500000\\\\;" \
+	"${devicetree_image} ram 0x2A00000 0x20000\\\\;" \
+	"${ramdisk_image} ram 0x2000000 0x600000\0" \
+	"dfu_ram=run dfu_ram_info && dfu 0 ram 0\0"
+
+# if defined(CONFIG_ZYNQ_SDHCI0) || defined(CONFIG_ZYNQ_SDHCI1)
+#  define CONFIG_DFU_MMC
+#  define DFU_ALT_INFO_MMC \
+	"dfu_mmc_info=" \
+	"set dfu_alt_info " \
+	"${kernel_image} fat 0 1\\\\;" \
+	"${devicetree_image} fat 0 1\\\\;" \
+	"${ramdisk_image} fat 0 1\0" \
+	"dfu_mmc=run dfu_mmc_info && dfu 0 mmc 0\0"
+#  define DFU_ALT_INFO	\
+	DFU_ALT_INFO_RAM \
+	DFU_ALT_INFO_MMC
+# else
+#  define DFU_ALT_INFO	\
+	DFU_ALT_INFO_RAM
+# endif
+#endif
+
+#if !defined(DFU_ALT_INFO)
+# define DFU_ALT_INFO
 #endif
 
 #if defined(CONFIG_ZYNQ_SDHCI) || defined(CONFIG_ZYNQ_USB)
@@ -174,7 +218,8 @@
 			"echo Copying FIT from USB to RAM... && " \
 			"load usb 0 ${load_addr} ${fit_image} && " \
 			"bootm ${load_addr}\0" \
-		"fi\0"
+		"fi\0" \
+		DFU_ALT_INFO
 
 #define CONFIG_BOOTCOMMAND		"run $modeboot"
 #define CONFIG_BOOTDELAY		3 /* -1 to Disable autoboot */
@@ -205,7 +250,7 @@
 #define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
 #define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_SDRAM_BASE + 0x1000)
 
-#define CONFIG_SYS_MALLOC_LEN		0x400000
+#define CONFIG_SYS_MALLOC_LEN		0xC00000
 #define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_SDRAM_BASE
 #define CONFIG_SYS_INIT_RAM_SIZE	CONFIG_SYS_MALLOC_LEN
 #define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR + \