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Operator's guide
flashdcm -r root-file -b boot-file -s baud-rate -p root-
password -d port
where root-file and boot-file are the images you wish to
transmit, baud-rate is the baud rate of the DCM's console port,
root-password is the password of the user root on the DCM (not
any other administrative account), and port is the port number of the
serial interface (on the second computer or DCM) which you will be
using.
If the device has several serial interfaces, the command serialmap
may help you determine which port number corresponds to which
device:
[root @ dcm] # serialmap
Library version: libserialmap Version 1.0.5 with
LIBGCONFIGDB
4 serial ports
Port 0, Key 7000, name ttyS0, device /dev/ttyS0, baud
38400
Port 1, Key 7001, name ttyS1, device /dev/ttyS1, baud
19200
Port 2, Key 7002, name ttyS2, device /dev/ttyS2, baud
19200
Port 3, Key 7003, name ttyS3, device /dev/ttyS3, baud
19200
flashdcm also has an -e option, which wipes clean the Flash memory
used for the filesystem before providing the new firmware. Some surface
DCM units require you to do this when installing a root image. If you
use the -e option to install a root image, you must also provide a new
boot image, since the boot image in memory will be erased.
6. Power up the DCM. The second computer or DCM will detect messages
coming from the bootloader of the DCM, and automatically interrupt the
boot process to provide the new firmware.
7. Wait for the new firmware to be uploaded. The DCM will reboot
automatically at the end of transmission, and the flashdcm process
will terminate. This may take several minutes.
At this point, you will have a minimal installation of the DCM software, and
can proceed to commissioning the system.
December 2005 93