Developing your AOS project on Linux
This page provides instructions for setting up your Linux machine for working on
the AOS project. These instructions will be distribution specific (for Ubuntu) but
they should at least give you an idea of how to set up other distributions.
The components you will need to install are:
Once installed, the installation can be tested by following the milestone 0 instructions.
- Build dependencies
- A serial terminal program (we recommend picocom)
- TFTP server
- An NFS server/share
seL4 build dependencies
(you only need to install the Base Build Dependencies and the Python
Dependencies) instructions on the seL4 docsite. Note: that you
only require the aarch64 cross-compilers.
Once this stage is completed successfully, you should be able to compile the
Install the following packages in order to run the project and communicate with
sudo apt-get install git
sudo apt-get install netcat.traditional
update-alternatives --set nc /bin/nc.traditional
sudo apt-get install picocom
sudo apt-get install tftpd-hpa tftp-hpa
sudo apt-get install nfs-kernel-server
Setting up the network
Insert the USB to Ethernet adapter into a spare USB port on your Linux host
machine and run the following:
The name that your system assigned to the Ethernet port should appear near the bottom of the output. For example:
You may find that the port was immediately renamed:
ax88179_178a 2-2:1.0 eth1: register 'ax88179_178a' at usb-0000:00:14.0-2, D-Link DUB-1312 USB 3.0 to Gigabit Ethernet Adapter, e4:6f:13:f3:e3:93
The following instructions assume that the Ethernet port was named
ax88179_178a 2-2:1.0 enxe46f13f3e393: renamed from eth1
and that no renaming occurred. If this is not the case, replace
enxe46f13f3e393 in the above example).
Add the following lines
Bring up the interface:
iface eth1 inet static
sudo ifup eth1
Setting up the TFTP server
After installing the
tftpd-hpa package, the
default Ubuntu tftp directory will be
will either need to modify our helper scripts to match the new
default, or modify
TFTP_DIRECTORY to match our source.
You may need to adjust ownership and/or permissions to allow
you access to the directory (e.g.
/var/lib/tftpboot) if you are in a benign environment.
Our source expects the tftp directory to be
Make sure to enable and start the tftp server with
$ sudo systemctl enable tftpd-hpa && sudo systemctl start tftpd-hpa
Set up an NFS share
Make sure NFS server is installed:
Then set up the exports by editing
$ sudo apt-get install nfs-kernel-server nfs-common
/etc/exports and adding the following lines (adjusted for the location of your tftp root directory and your username):
/var/tftpboot/USERNAME to whatever is set
to in your tftpd configuration.
UID with your Unix user ID (usually 1000 -- find out using
GID with your Unix group ID (usually 1000 -- find out using
To restart the nfs server with the updated exports, run:
$ sudo service nfs-kernel-server restart
Serial Line Access
Add your account to group
You may be required to change the settings for picocom. Use
dialout to give access
/dev/ttyUSB0. You'll need to logout and back in to
update your groups. If you skip this picocom may need root permissions to run.
dmesg to work out which port the USB to serial converter has been attached to
/dev/ttyUSB0). Then set picocom to use that serial port, 115200 baud rate, 8N1, and no hardware flow
sudo picocom -b 115200 /dev/ttyUSB0.
26 Jul 2018.