Tornado

Tornado 2.0
User’s Guide
NOTE: The information about NetROM in this section is a summary of NetROM
documentation, with some supplementary remarks. This section is not a
replacement for the NetROM documentation. In particular, refer to that
documentation for full information about how to connect the NetROM to the
network and to your target board.
For information about booting a target without a network, see 2.6.7 Booting a Target
Without a Network, p.53.
Configuring the Target Agent for NetROM
To configure the target agent for a NetROM communication connection,
reconfigure and rebuild VxWorks with a NetROM interface for the target agent.
Several configuration macros are used to describe a board’s memory interface to
its ROM banks. You may need to override some of them for your board. See
Configuration for NetROM Connection, p.138.
Configuring the NetROM
Before a target server on your host can connect to the target agent over NetROM,
some hardware and software configuration is necessary. The following steps
outline this process.
Step 1:
Configure the NetROM IP address from your host system.
When it powers up, the NetROM knows its own Ethernet address, but does not
know its internet (IP) address.
There are two ways of establishing an IP address for the NetROM:
■
Connect a terminal to the NetROM serial console, and specify the IP address
manually when you power up the NetROM for Step 2. This solution is simple,
but you must repeat it each time the NetROM is powered up or restarted.
■
Configure a network server to reply to RARP or BOOTP requests from the
NetROM. On power-up, the NetROM automatically broadcasts both requests.
This solution is preferable, because it permits the NetROM to start up without
any interaction once the configuration is working.
Since the RARP and BOOTP requests are broadcast, any host connected to the
same subnet can reply. Configure only one host to reply to NetROM requests.
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