Artesyn ATCA-8310 Installation and Use (May 2014) - Manual (Page 183)

U-Boot
ATCA-8310 Installation and Use (6806800M72E) 183
The following "bootcmd" would be used.
"usb start;
runscript usb:0:0,usb:0:1,usb:1:0,usb:1:1 recover.ui,autoexec.ui"
The following default.boot script would execute a boot operation on the disk partition
corresponding to the current boot flash device:
##
# u-boot boot script for redundant vxWorks boot
#
# This boot script will execute "vxWorks" from the current
device/partition
# if it is
# - on disk partition 1 and the current flash bank is 0, or
# - on disk partition 2 and the current flash bank is 1
#
# Otherwise it just exits
#
# The used partition is stored in the environment variable act_path,
which
# can be used by the OS to determine which is partition is supposed
to
# be used.
#
# Determine the partition we expect to run on
#