u-boot transition part 1

gistfile1.c

#define CONFIG_BOOTCOMMAND \
	"mmc dev ${mmcdev}; if mmc rescan; then " \
		"echo SD/MMC found on device ${mmcdev};" \
		"if run loadbootenv; then " \
			"echo Loaded environment from uEnv.txt;" \
			"run importbootenv;" \
		"fi;" \
		"if test -n $uenvcmd; then " \
			"echo Running uenvcmd ...;" \
			"run uenvcmd;" \
		"fi;" \
		"if run loaduimage; then " \
			"run loadfdt;" \
			"run mmcboot;" \
		"fi;" \
	"fi;"