121 lines
4.2 KiB
ReStructuredText
121 lines
4.2 KiB
ReStructuredText
|
.. _acrn_doc:
|
|||
|
|
|||
|
Using AGL as the User OS
|
|||
|
########################
|
|||
|
|
|||
|
This tutorial describes the steps to run Automotive Grade Linux (AGL)
|
|||
|
as the User OS on ACRN hypervisor and the problems we got at current stage.
|
|||
|
We hope the steps documented in this article could help us to reproduce the
|
|||
|
problem much easier and provide some information for further debugging.
|
|||
|
|
|||
|
.. image:: images/The-overview-of-AGL-as-UOS.png
|
|||
|
:align: center
|
|||
|
|
|||
|
Introduction of AGL
|
|||
|
*******************
|
|||
|
|
|||
|
Automotive Grade Linux (AGL) is an open source project of The Linux Foundation
|
|||
|
that is building a Linux-based, open software platform for automotive application.
|
|||
|
For more information about AGL, please visit AGL’s official website:
|
|||
|
https://www.automotivelinux.org/.
|
|||
|
|
|||
|
Steps for using AGL as the UOS
|
|||
|
******************************
|
|||
|
|
|||
|
#. Hardware preparation
|
|||
|
|
|||
|
The regulatory model of NUC we used is `NUC6CAYH
|
|||
|
<https://www.intel.com/content/www/us/en/products/boards-kits/nuc/kits/nuc6cayh.html>`_
|
|||
|
and this kind of NUC has two display ports: 1x HDMI and 1x VGA.
|
|||
|
So two displays needed for NUC, one for SOS and one for UOS,
|
|||
|
and connect these two displays to NUC.
|
|||
|
|
|||
|
#. Prepare the Service OS (SOS)
|
|||
|
|
|||
|
Follow the instructions found in the Getting started guide for Intel NUC
|
|||
|
to setup SOS :ref:`getting-started-apl-nuc`.
|
|||
|
|
|||
|
#. Prepare the User OS (UOS)
|
|||
|
|
|||
|
Download the release of AGL from https://download.automotivelinux.org/AGL/release/eel/,
|
|||
|
and we will use ``eel_5.1.0`` release for example.
|
|||
|
|
|||
|
.. code-block:: none
|
|||
|
|
|||
|
cd ~
|
|||
|
wget https://download.automotivelinux.org/AGL/release/eel/5.1.0/intel-corei7-64/deploy/images/intel-corei7-64/agl-demo-platform-crosssdk-intel-corei7-64.wic.xz
|
|||
|
unxz agl-demo-platform-crosssdk-intel-corei7-64.wic.xz
|
|||
|
|
|||
|
|
|||
|
You need to adjust the ``/usr/share/acrn/samples/nuc/launch_uos.sh`` script to match your installation.
|
|||
|
These are the couple of lines you need to modify:
|
|||
|
|
|||
|
.. code-block:: none
|
|||
|
|
|||
|
-s 3,virtio-blk,/root/agl-demo-platform-crosssdk-intel-corei7-64.wic \
|
|||
|
-k /usr/lib/kernel/default-iot-lts2018 \
|
|||
|
-B "root=/dev/vda2
|
|||
|
|
|||
|
.. note::
|
|||
|
In case you have downloaded a different AGL image or store the image in other directory,
|
|||
|
you will need to modify the AGL file name or directory (the ``-s 3,virtio-blk`` argument)
|
|||
|
to match what you have downloaded above.
|
|||
|
Likewise, you may need to adjust the kernel file name to ``default-iot-lts2018``.
|
|||
|
|
|||
|
#. Start the User OS (UOS)
|
|||
|
|
|||
|
You are now all set to start the User OS (UOS).
|
|||
|
|
|||
|
.. code-block:: none
|
|||
|
|
|||
|
sudo /usr/share/acrn/samples/nuc/launch_uos.sh
|
|||
|
|
|||
|
**Congratulations**, you are now watching the User OS booting up!
|
|||
|
|
|||
|
And you should be able to see the console of AGL:
|
|||
|
|
|||
|
.. image:: images/The-console-of-AGL.png
|
|||
|
:align: center
|
|||
|
|
|||
|
When you see the output of the console above, that means AGL has been loaded
|
|||
|
and now you could operate on the console.
|
|||
|
|
|||
|
Enable the display of AGL
|
|||
|
*************************
|
|||
|
|
|||
|
But following the setup steps before, you will get black screen in AGL.
|
|||
|
Please don't worry about it, and we will give the solutions to the black screen issue in AGL.
|
|||
|
By debugging, we identified the problem as an issue of ``ivi-shell.so`` library, it seems that
|
|||
|
this library is not well supported. But we can light the screen with the GUI of weston like figure below.
|
|||
|
|
|||
|
.. image:: images/The-GUI-of-weston.png
|
|||
|
:align: center
|
|||
|
|
|||
|
To enable weston in AGL, We need to modify ``weston.ini``, which is the configuration file of weston.
|
|||
|
|
|||
|
.. code-block:: none
|
|||
|
|
|||
|
vim /etc/xdg/weston/weston.ini
|
|||
|
|
|||
|
The changes of ``weston.ini``:
|
|||
|
|
|||
|
#. Comment ``ivi-shell.so`` out
|
|||
|
|
|||
|
#. Check the name of output is ``HDMI-A-2``
|
|||
|
|
|||
|
After that, there are still some steps need to do to launch weston in AGL:
|
|||
|
|
|||
|
.. code-block:: none
|
|||
|
|
|||
|
export XDG_RUNTIME_DIR=/run/platform/display
|
|||
|
systemctl restart weston
|
|||
|
|
|||
|
And you will be able to see the GUI of weston in AGL now.
|
|||
|
|
|||
|
Follow up
|
|||
|
*********
|
|||
|
ACRN Hypervisor is trying to support more kinds of operating systems all the time,
|
|||
|
and AGL is an example of them. We are still debugging the “ivi-shell.so” issue,
|
|||
|
and we are also investigating the problem why AGL GUI not got launched,
|
|||
|
currently it may either be a configuration issue or a real bug, more experiment will be done.
|