U-Boot> printenv
arch=arm
args=dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2709.boardrev=0xa01041 bcm2709.serial=0x8b04db1c smsc95xx.macaddr=B8:27:EB:04:DB:1C bcm2708_fb.fbswap=1 bcm2709.disk_led_gpio=47 bcm2709.disk_led_active_low=0 sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x3dc00000 vc_mem.mem_size=0x3f000000  elevator=deadline
baudrate=115200
board=rpi_2
board_name=rpi_2
boot_a_script=load ${devtype} ${devnum}:${bootpart} ${scriptaddr} ${prefix}${script}; source ${scriptaddr}
boot_extlinux=sysboot ${devtype} ${devnum}:${bootpart} any ${scriptaddr} ${prefix}extlinux/extlinux.conf
boot_prefixes=/ /boot/
boot_script_dhcp=boot.scr.uimg
boot_scripts=boot.scr.uimg boot.scr
boot_targets=mmc0 usb0 pxe dhcp 
bootcmd=run distro_bootcmd
bootcmd_dhcp=usb start; if dhcp ${scriptaddr} ${boot_script_dhcp}; then source ${scriptaddr}; fi
bootcmd_mmc0=setenv devnum 0; run mmc_boot
bootcmd_pxe=usb start; dhcp; if pxe get; then pxe boot; fi
bootcmd_usb0=setenv devnum 0; run usb_boot
bootdelay=2
bootenv=uEnv.txt
cpu=armv7
devnum=0
devtype=mmc
dhcpuboot=usb start; dhcp u-boot.uimg; bootm
distro_bootcmd=for target in ${boot_targets}; do run bootcmd_${target}; done
fdt_addr_r=0x00000100
fdtaddr=256
fdtfile=bcm2836-rpi-2-b.dtb
filesize=1c5
importbootenv=echo Importing environment from mmc ...; env import -t -r $loadaddr $filesize
kernel_addr_r=0x01000000
loadaddr=0x00200000
loadbootenv=echo LOADBOOTENV; load ${devtype} ${devnum} ${loadaddr} ${bootenv}
loadfdt=fdt addr 0x100; fdt get value args /chosen bootargs
mmc_boot=run loadfdt; if mmc dev ${devnum}; then setenv devtype mmc; if run loadbootenv; then echo Loaded environment from ${bootenv}; run importbootenv; fi; if test -n "$uenvcmd"; then echo Running uenvcmd ...; run uenvcmd; fi; run scan_dev_for_boot_part; fi
mmcpart=0
pxefile_addr_r=0x00100000
ramdisk_addr_r=0x02100000
scan_dev_for_boot=echo Scanning ${devtype} ${devnum}:${bootpart}...; for prefix in ${boot_prefixes}; do run scan_dev_for_extlinux; run scan_dev_for_scripts; done
scan_dev_for_boot_part=part list ${devtype} ${devnum} devplist; for bootpart in ${devplist}; do if fstype ${devtype} ${devnum}:${bootpart} bootfstype; then run scan_dev_for_boot; fi; done
scan_dev_for_extlinux=if test -e ${devtype} ${devnum}:${bootpart} ${prefix}extlinux/extlinux.conf; then echo Found ${prefix}extlinux/extlinux.conf; run boot_extlinux; echo SCRIPT FAILED: continuing...; fi
scan_dev_for_scripts=for script in ${boot_scripts}; do if test -e ${devtype} ${devnum}:${bootpart} ${prefix}${script}; then echo Found U-Boot script ${prefix}${script}; run boot_a_script; echo SCRIPT FAILED: continuing...; fi; done
scriptaddr=0x00000000
soc=bcm2835
stderr=serial,lcd
stdin=serial,usbkbd
stdout=serial,lcd
uenvcmd=echo ENVCMD; load mmc ${mmcdev}:${mmcpart} ${loadaddr} snappy-system.txt; env import -t $loadaddr $filesize; run snappy_boot
usb_boot=usb start; if usb dev ${devnum}; then setenv devtype usb; run scan_dev_for_boot_part; fi
usbethaddr=b8:27:eb:ec:38:8d
vendor=raspberrypi

Environment size: 3115/16380 bytes