Commands to the console are:
 configeeprom             display EEPROM configuration information
 configflash              display FLASH configuration information
        copyimages {yes | no}       copy network booted image files
        flashfs {auto | emergency}  use automatic FLASHFS selection or
                                    force boot from emergency FLASHFS
        initialise                  initialise configuration information
        listenv                     list environment variables
        mac <address>               set MAC address
        serialboot yes              boot from EEPROM
        serialboot no               boot from FLASH
        setenv <key> <value>        set environment variable
        unsetenv <key>              unset environment variable
    The following boot modes are supported by serial EEPROM v3.0+ only:
        serialboot {yes | auto}     boot via EEPROM, auto-select Ethernet or USB
        serialboot ethernet         boot via EEPROM from Ethernet only
        serialboot usb              boot via EEPROM from USB only
        serialboot no               boot from FLASH
 dw <address> [<length>]  dump words (hex/ascii)
 enter <address>          enter an image
 erw <wrdaddress>         read a single word from EEPROM
 eww <wrdaddress> <value> write a single word to EEPROM
 fdw <address> [<length>] dump flash words (hex/ascii)
 help                     print this text
 quit                     leave the console
 rw <address>             read a single word
 why                      reason for console entry
 ww <address> <value>     write a single word