configs: imx6dl-mamoj: Add DFU support

Add DFU support for BTicino Mamoj board and update
the same steps in README.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Simone CIANNI <simone.cianni@bticino.it>
Signed-off-by: Raffaele RECALCATI <raffaele.recalcati@bticino.it>

board/bticino/mamoj/README

@@ -13,6 +13,8 @@ The following methods can be used for booting Mamoj boards:
 
 1. USB SDP boot
 
+2. eMMC boot (via DFU)
+
 1. USB SDP boot:
 ---------------
 
@@ -55,6 +57,41 @@ The following methods can be used for booting Mamoj boards:
 
   We can see U-Boot boot from USB SDP on minicom
 
+2. eMMC boot via DFU:
+--------------------
+
+  Once booted from USB SDP, program the eMMC as below(make sure to connect USB OTG)
+
+  - Change eMMC partition config
+
+     => mmc partconf 2 1 0 0
+
+  - Partition eMMC on host
+
+     => ums 0 mmc 2
+
+    Host will able to detect the eMMC disk as UMS, partition the same.
+
+  - Program SPL
+
+     => setenv dfu_alt_info $dfu_alt_info_spl
+     => dfu 0 mmc 2
+
+     At Host
+
+     # dfu-util -D SPL -a spl
+
+  - Program u-boot-dtb.img
+
+     => setenv dfu_alt_info $dfu_alt_info_uboot
+     => dfu 0 mmc 2
+
+     At Host
+
+     # dfu-util -D u-boot-dtb.img -a u-boot
+
+  Poweroff and Poweron the board and see U-Boot booting from eMMC.
+
 --
 Jagan Teki <jagan@amarulasolutions.com>
 03/12/18

configs/imx6dl_mamoj_defconfig

@@ -15,6 +15,7 @@ CONFIG_FASTBOOT_FLASH=y
 CONFIG_FASTBOOT_FLASH_MMC_DEV=2
 CONFIG_SYS_PROMPT="=> "
 CONFIG_CRC32_VERIFY=y
+CONFIG_CMD_DFU=y
 CONFIG_CMD_MEMTEST=y
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
@@ -44,5 +45,6 @@ CONFIG_USB_GADGET_MANUFACTURER="FSL"
 CONFIG_USB_GADGET_VENDOR_NUM=0x0525
 CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
 CONFIG_CI_UDC=y
+CONFIG_DFU_MMC=y
 CONFIG_IMX_THERMAL=y
 CONFIG_SYS_I2C_MXC=y

include/configs/imx6dl-mamoj.h

@@ -15,7 +15,7 @@
 #include "mx6_common.h"
 
 /* Size of malloc() pool */
-#define CONFIG_SYS_MALLOC_LEN		(16 * SZ_1M)
+#define CONFIG_SYS_MALLOC_LEN		(35 * SZ_1M)
 
 /* Total Size of Environment Sector */
 #define CONFIG_ENV_SIZE			SZ_128K
@@ -37,6 +37,8 @@
 	"fdt_addr_r=0x13000000\0"	\
 	"kernel_addr_r=0x10008000\0"	\
 	"fdt_high=0xffffffff\0"		\
+	"dfu_alt_info_spl=spl raw 0x2 0x400\0" \
+	"dfu_alt_info_uboot=u-boot raw 0x8a 0x11400\0" \
 	BOOTENV
 
 #define BOOT_TARGET_DEVICES(func) \