am335x_evm: Consolidate DFU environment parts into the DFU part of the file

To make managing the environment easier, add DFUARGS to
CONFIG_EXTRA_ENV_SETTINGS.  Then we set DFUARGS down in the DFU part of
the file, and include (or not) the NAND part, based on if NAND is set.
Signed-off-by: NTom Rini <trini@ti.com>

include/configs/am335x_evm.h

@@ -39,7 +39,6 @@
 		"${optargs} " \
 		"root=${nandroot} " \
 		"rootfstype=${nandrootfstype}\0" \
-	"dfu_alt_info_nand=" DFU_ALT_INFO_NAND "\0" \
 	"nandroot=ubi0:rootfs rw ubi.mtd=7,2048\0" \
 	"nandrootfstype=ubifs rootwait=1\0" \
 	"nandboot=echo Booting from nand ...; " \
@@ -66,8 +65,6 @@
 	"fdtfile=undefined\0" \
 	"console=ttyO0,115200n8\0" \
 	"optargs=\0" \
-	"dfu_alt_info_mmc=" DFU_ALT_INFO_MMC "\0" \
-	"dfu_alt_info_emmc=rawemmc mmc 0 3751936\0" \
 	"mmcdev=0\0" \
 	"mmcroot=/dev/mmcblk0p2 ro\0" \
 	"mmcrootfstype=ext4 rootwait\0" \
@@ -99,7 +96,6 @@
 	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
 	"importbootenv=echo Importing environment from mmc ...; " \
 		"env import -t $loadaddr $filesize\0" \
-	"dfu_alt_info_ram=" DFU_ALT_INFO_RAM "\0" \
 	"ramargs=setenv bootargs console=${console} " \
 		"${optargs} " \
 		"root=${ramroot} " \
@@ -162,7 +158,8 @@
 			"setenv fdtfile am335x-evmsk.dtb; fi; " \
 		"if test $fdtfile = undefined; then " \
 			"echo WARNING: Could not determine device tree to use; fi; \0" \
-	NANDARGS
+	NANDARGS \
+	DFUARGS
 #endif
 
 #define CONFIG_BOOTCOMMAND \
@@ -309,6 +306,7 @@
 #define CONFIG_DFU_MMC
 #define CONFIG_CMD_DFU
 #define DFU_ALT_INFO_MMC \
+	"dfu_alt_info_mmc=" \
 	"boot part 0 1;" \
 	"rootfs part 0 2;" \
 	"MLO fat 0 1;" \
@@ -319,10 +317,11 @@
 	"spl-os-args fat 0 1;" \
 	"spl-os-image fat 0 1;" \
 	"u-boot.img fat 0 1;" \
-	"uEnv.txt fat 0 1"
+	"uEnv.txt fat 0 1\0"
 #ifdef CONFIG_NAND
 #define CONFIG_DFU_NAND
 #define DFU_ALT_INFO_NAND \
+	"dfu_alt_info_nand=" \
 	"SPL part 0 1;" \
 	"SPL.backup1 part 0 2;" \
 	"SPL.backup2 part 0 3;" \
@@ -330,13 +329,21 @@
 	"u-boot part 0 5;" \
 	"u-boot-spl-os part 0 6;" \
 	"kernel part 0 8;" \
-	"rootfs part 0 9"
+	"rootfs part 0 9\0"
+#else
+#define DFU_ALT_INFO_NAND ""
 #endif
 #define CONFIG_DFU_RAM
 #define DFU_ALT_INFO_RAM \
+	"dfu_alt_info_ram=" \
 	"kernel ram 0x80200000 0xD80000;" \
 	"fdt ram 0x80F80000 0x80000;" \
-	"ramdisk ram 0x81000000 0x4000000"
+	"ramdisk ram 0x81000000 0x4000000\0"
+#define DFUARGS \
+	"dfu_alt_info_emmc=rawemmc mmc 0 3751936\0" \
+	DFU_ALT_INFO_MMC \
+	DFU_ALT_INFO_RAM \
+	DFU_ALT_INFO_NAND
 
 /*
  * Default to using SPI for environment, etc.