2 network accessing, Network accessing commands, Nbl operation netbootloader – Kontron NetBootLoader User Manual

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ID 1022-8317, Rev. 2.0

NBL Operation

NetBootLoader

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2.2

Network Accessing

To support application development and operational requirements for various boot strategies,
the NetBootLoader provides several functions for gaining access to network services. These
functions include: access to DHCP/BOOTP servers, accessing TFTP servers, accessing FTP
servers, and having access to the target CPU from remote locations.

To achieve this, certain network parameters must first be configured. This can be done manu-
ally via a terminal (primary serial port) or dynamically via the network (an Ethernet port). If the
required parameters are known, they can be set with the NET command. Otherwise, the com-
mand DHCP makes it possible to download such parameters and to configure an Ethernet port
for network operation. Once the Ethernet port is configured, the commands TFTP and FTP are
available to download bootable images and other files as required. For remote access to the
CPU module, either telnet or the Serial Over LAN feature may be used.

The following table provides an overview of available TFTP/FTP server and remote accessing
functions.

SCRIPT

NBL command scripting

Contents are executed only during boot up

SETCORE

Set or display core number

For CPUs with multicore processors

SPEED

Set or display fast booting

Boot Sequence

Set or display boot sequence

Defines the image boot order

SWAP

Set or display NBL Flash usage For CPUs with two NBL Flashes

Table 2:

Network Accessing Commands

CMD TITLE

ALIAS

FUNCTION

REMARKS

BYE

Terminate session with FTP server

Change
Directory

Change FTP server directory

GET

Download a file from FTP server

Data buffer is target.

LOGOUT

Terminate telnet session

List Directory

List FTP server directory

Lists contents of directory.

PASSWD

Password

Set telnet password

Must be set before attempting telnet login

PING

Verify network status

PUT

Upload a file to FTP server

Data buffer is source.

PWD

Print Working
Directory

Display current FTP server directory Lists name of directory

TFTP

Download a file from TFTP server

Data buffer is target.

Table 1:

NetBootLoader Control Commands

CMD TITLE

ALIAS

FUNCTION

REMARKS