beaglebone uEnv.txt changes context diff

diff -c uEnv.txt_sdcard uEnv.txt
*** uEnv.txt_sdcard     2014-02-06 00:03:58.000000000 +0000
--- uEnv.txt    2014-02-16 02:13:14.000000000 +0000
***************
*** 18,29 ****

  console=ttyO0,115200n8

! mmcroot=/dev/mmcblk0p2 ro
  mmcrootfstype=ext4 rootwait fixrtc

! loadkernel=load mmc ${mmcdev}:${mmcpart} 0x80300000 ${kernel_file}
! loadinitrd=load mmc ${mmcdev}:${mmcpart} 0x81600000 ${initrd_file}; setenv initrd_size ${filesize}
! loadfdt=load mmc ${mmcdev}:${mmcpart} 0x815f0000 /dtbs/${fdtfile}

  boot_ftd=run loadkernel; run loadinitrd; run loadfdt

--- 18,31 ----

  console=ttyO0,115200n8

! bootdev=0:1
!
! mmcroot=/dev/sda3 ro
  mmcrootfstype=ext4 rootwait fixrtc

! loadkernel=load usb ${bootdev} 0x80300000 ${kernel_file}
! loadinitrd=load usb ${bootdev} 0x81600000 ${initrd_file}; setenv initrd_size ${filesize}
! loadfdt=load usb ${bootdev} 0x815f0000 /dtbs/${fdtfile}

  boot_ftd=run loadkernel; run loadinitrd; run loadfdt

***************
*** 31,35 ****
  mmcargs=setenv bootargs console=${console} ${optargs} ${kms_force_mode} root=${mmcroot} rootfstype=${mmcrootfstype} ${expansion} ${systemd}

  expansion_args=setenv expansion ip=${ip_method}
! uenvcmd=run boot_ftd; run device_args; bootz 0x80300000 0x81600000:${initrd_size} 0x815f0000
  #
--- 33,37 ----
  mmcargs=setenv bootargs console=${console} ${optargs} ${kms_force_mode} root=${mmcroot} rootfstype=${mmcrootfstype} ${expansion} ${systemd}

  expansion_args=setenv expansion ip=${ip_method}
! uenvcmd=usb start; run boot_ftd; run device_args; bootz 0x80300000 0x81600000:${initrd_size} 0x815f0000
  #