ARM: am57xx_evm: enable DFU support

AM57xx GP EVM has USB2 port of the SoC exposed as
USB client port.

It is useful to be able to use this port for USB
DFU downloads.

Enable USB DFU support. Tested on AM57x GP EVM Rev
A3 using DFU to download to connected SD card.

configs for HS version of the AM57x EVM are
included in the patch but not really tested.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

configs/am57xx_evm_defconfig

@@ -35,6 +35,9 @@ CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y
+CONFIG_CMD_DFU=y
+CONFIG_DFU_RAM=y
+CONFIG_DFU_MMC=y
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y

configs/am57xx_hs_evm_defconfig

@@ -36,6 +36,9 @@ CONFIG_CMD_SF=y
 CONFIG_CMD_SPI=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y
+CONFIG_CMD_DFU=y
+CONFIG_DFU_RAM=y
+CONFIG_DFU_MMC=y
 CONFIG_CMD_GPIO=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DHCP=y

include/configs/am57xx_evm.h

@@ -12,6 +12,8 @@
 #ifndef __CONFIG_AM57XX_EVM_H
 #define __CONFIG_AM57XX_EVM_H
 
+#include <environment/ti/dfu.h>
+
 #define CONFIG_AM57XX
 
 #ifdef CONFIG_SPL_BUILD
@@ -59,6 +61,12 @@
 	"name=ipu2,size=1M,uuid=${uuid_gpt_ipu2};" \
 	"name=userdata,size=-,uuid=${uuid_gpt_userdata}"
 
+#define DFUARGS \
+	"dfu_bufsiz=0x10000\0" \
+	DFU_ALT_INFO_MMC \
+	DFU_ALT_INFO_EMMC \
+	DFU_ALT_INFO_RAM \
+
 #include <configs/ti_omap5_common.h>
 
 /* Enhance our eMMC support / experience. */