Tornado

2
Setup and Startup
Step 2:
Example 2-1
Prepare a NetROM startup file.
After the NetROM obtains its IP address, it loads a startup file. The pathname for
this file depends on which protocol establishes the IP address:
■
BOOTP: A startup-file name is part of the BOOTP server’s reply to the BOOTP
request. Record your choice of startup-file pathname in the BOOTP table
(typically /etc/bootptab).
■
RARP: When the IP address is established by a reply to the RARP request, no
other information accompanies the IP address. In this case, the NetROM
derives a file name from the IP address. The file name is constructed from the
numeric (dot-decimal) IP address by converting each address segment to two
hexadecimal digits. For example, a NetROM at IP address 147.11.46.164
expects a setup file named 930B2EA4 (hexadecimal digits from the alphabet
are written in upper case). The NetROM makes three attempts to find the
startup file, with each of the following pathnames: ./filename,
/tftpboot/filename, and filename without any other path information.
The startup file contains NetROM commands describing the emulated ROM, the
object format, path and file names to download, and so on. The following example
NetROM startup file configures the Ethernet device, adds routing information,
records the object-file name to download and the path to it, and establishes ROM
characteristics.
Sample NetROM Startup File
begin
ifconfig le0 147.11.46.164 netmask 255.255.255.0 broadcast 147.11.46.0
setenv filetype srecord
setenv loadpath /tftpboot
setenv loadfile vxWorks_rom.hex
setenv romtype 27c020
setenv romcount 1
setenv wordsize 8
setenv debugpath readaddr
set udpsrcmode on
tgtreset
end
2
NOTE: The environment variable debugpath should be set to dualport (rather
than to readaddr) if you are using the 500-series NetROM boxes.
When you create a NetROM startup file, remember to set file permissions to permit
the TFTP file server to read the file.
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