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TFTP Server
Setting up TFTP Server in Ubuntu
TFTP (Trivial File Transfer Protocol) is a simplified version of FTP (File Transfer Protocol),running on port 69. It can be setup with very litte effort.
For example the TFTP server can be used to provide the binaries (u-boot, device tree blob and Linux kernel) for firmware updates in u-boot on the target hardware.
The first thing is to install install the client and the server package, together with xinetd superserver.
sudo apt-get install xinetd tftpd tftp
The next step is to create folder to act as TFTP root, the files for e.g. firmware updates on the Starterkit must be stored here .
Typically this folder is located at the root level and named tftpboot
sudo mkdir /tftpboot sudo chmod -R 777 /tftpboot sudo chown -R nobody /tftpboot
Now a new xinetd tftp serivce has to be configured by creating the file /etc/xinetd.d/tftp containing the following lines of code:
service tftp
{
protocol = udp
port = 69
socket_type = dgram
wait = yes
user = nobody
server = /usr/sbin/in.tftpd
server_args = /tftpboot
disable = no
}
After setting up everything properly, the xinetd service must be restarted by the following command:
sudo sudo service xinetd restart
Ubuntu 12.04 x86 in vmware player
The default TFTP suite is tftp-hpa. To install the following step is needed:
user@ubuntu:~$ sudo apt-get install tftpd-hpa tftp-hpa
The TFTP default directory is /var/lib/tftpboot.
Change the following line in /etc/default/tftpd-hpa to point to the images directory of the BSP:
TFTP_DIRECTORY="/home/tq/workspace/TQMa6x-BSP-REV.0104/platform-MBa6x/images"
To restart the TFTP server type:
user@ubuntu:~$ sudo service tftpd-hpa restart
To test the server copy some file to the server and get it back with
user@ubuntu:~$ tftp 127.0.0.1 -c get <filename>
Ubuntu 10.04 x86 in vmware player
Installation
user@ubuntu:~$ sudo apt-get install xinetd tftpd tftp
Configuration
To cofigure TFTP the file /etc/xinetd.d/tftp must be created and filled with the following content. This configuration uses the directory /tftpboot.
service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = -s /tftpboot
per_source = 11
cps = 100 2
}
The directory requires at least the access authorisation “dr-xr-xr-x”.
After the configuration was changed the server should be restarted:
user@ubuntu:~$ sudo service xinetd restart
Firewall & port forwarding
TFTP uses port 69 UDP. This port must be opened.