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4 changes: 4 additions & 0 deletions .buildinfo
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# Sphinx build info version 1
# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
config: db7edc6d62efaf99c404e90f52cd3418
tags: 645f666f9bcd5a90fca523b33c5a78b7
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152 changes: 152 additions & 0 deletions _sources/faqs.rst.txt
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.. _faqs:

Frequently Asked Questions
##########################

:Q:
What is the new Project |C| release?
:A:
The new Project |C| release refers to the source code that makes up
the September 2019 Project |C| Release (**20-Sept-2019**), and each
release since. While Project |C| had long supported Android* on bare
metal deployments using Intel® Architecture, there was no support for
virtualized deployments of Android on Intel architecture. The |C|
community filled that gap with the September 2019 release, which allows
one Android image to be deployed across Virtual Machines (VM) on
Intel® architectures. |C| source code can be used across a variety of
Intel hardware, including
`Intel® NUC Kit NUC6CAYH <https://www.intel.com/content/www/us/en/products/boards-kits/nuc/kits/nuc6cayh.html>`_.
Please check out :ref:`release-notes` for all the latest detailed release features.

:Q:
Why might developers and independent software vendors want to use |C|
in VM?
:A:
The new Project |C| packaging still only takes one step to install,
and in addition to gaining VM and container support for Android on
Intel® Architecture, developers and
:abbr:`ISVs (Independent Software Vendors)` will continue
experiencing:

* Open platform enabling helping developers speed time to market
across a variety of infrastructures
* Compliance with the Android Compatibility Test Suite (CTS),
as well as
`additional test suites <https://01.org/projectceladon/documentation/tutorials/test-strategy>`_
on leading platforms and configurations
* Functionality across a
:ref:`variety of Intel hardware <run-as-service>`,
including `Intel® NUC Kit NUC6CAYH <https://www.intel.com/content/www/us/en/products/boards-kits/nuc/kits/nuc6cayh.html>`_
* Rich vertical solution configurations allowing for ease of
scalability and extensibility across market segments


.. list-table::
:header-rows: 1

* -
- Celadon in VM
* - | Operating
| System
- | Virtualized Celadon deployments include Celadon running
| as a guest operating system in a virtual machine, in a
| virtualized environment.
* - | Security
| & Isolation
- | Running Celadon in a virtualized environment provides a
| stronger separation between guest VMs and host VM, leading
| to superior component isolation vs containerized deployments.
* - | Resource
| Consumption
| & Density
- | Virtualized Celadon deployments run at moderate densities;
| less than containerized deployments, but more than bare
| metal deployments.
:Q:
Can |C| still be run on bare metal?
:A:
Intel supports VM and Container configurations for |C|. Users can potentially
take the opensource |C| project and run in different configurations including
Native.

.. note::
Users should be aware that test suites provided by Google may not
pass with 100% scoring if deploying |C| on bare metal systems.
While |C| in VM deployments are supported by `Google Mobile Services (GMS)
<https://www.android.com/gms/>`_, Celadon on bare metal does not have
GMS support. Dedicated use cases like retail, client, education and
gaming do not need GMS. If there is a need for GMS while running
|C| on bare metal, direct communication with Google will be necessary.

:Q:
What are some example use cases and workload/applications that benefit from the new Celadon releases?
:A:
`Digital Signage <https://01.org/projectceladon/digital-signage-solutions-android-intel-architectures>`_
and Secure Payment solutions are ideal for virtualized deployments, due
to the high security and scalability virtualized deployments provide.
With Celadon in VM, however, developers and ISVs can continue utilizing
Intel® hardware acceleration while having the flexibility to customize
to the latest Android applications.

Overall, virtualized and containerized workloads are pervasive.
Customers demand support for each workload deployment type -
particularly for Android workloads. The latest Celadon release allows
developers and ISV's to consolidate workloads under one image, leading
to boundless opportunities to provide broad market support.

:Q:
Where can I learn more about Celadon in VM or Celadon in Containers?
:A:
There are many ways users can learn more, starting with accessing
release notes and `software <https://github.com/projectCeladon>`_.
Users can learn more by subscribing to the
`Project Celadon mailing list <https://lists.linuxfoundation.org/mailman/listinfo/celadon>`_.
Mailing list subscribers are kept up to date on the latest Celadon
releases, updates and tools. Subscribers are also invited to Project
Celadon focused events, like our monthly
`Technical Community Meetings <https://01.org/projectceladon/community#technical-community-meetings>`_, which provide a space for
discussion around Celadon technical topics.

:Q:
**What license(s) does |C| use?**
:A:
|C| consists of permissive and copyleft licenses such as BSD, MIT,
Apache and GPL licenses. Use, reproduction and distribution of
components of |C| licensed under an open source software license are
governed solely by the terms of that open source software license.
Please refer and comply to the open source software license found in the
source code files or repositories. Certain licenses such as Google
Mobile Services or Widevine are not included in |C|.

:Q:
**What Android desserts are supported in Celadon?**
:A:
The latest Android dessert is supported as soon as Google publicly
releases the dessert. Please see the :ref:`release-notes` for the latest
supported desserts.

:Q:
**Will the latest Celadon work on older hardware that was previously
supported?**
:A:
|C| supports a variety of reference platforms, in addition to being
device independent. Developers have the option to use an older manifest
file to build an image for previously supported hardware, but |C|'s main
focus is enabling on the latest Intel platforms. As such, support on
older platforms may be limited.

:Q:
**How could I start adding software components to my own |C| build?**
:A:
|C| follows the same practice as Android for adding software components
to the build.

:Q:
**I would like to contribute. Would Intel accept my contributions?**
:A:
Yes, we welcome contributions! Since Intel is responsible for the
product management and core stack of |C|, what ultimately is accepted is
at the maintainers' discretion. We will determine if it's a good fit,
then contributions will go through a review and verification process to
maintain quality.
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.. _run-as-service:

Run Project |C| on Intel® architectures
=======================================

The following diagrams illustrate the overall |C| software architecture.
|C| is designed to be fully compliant with Google* Android* compatibility definitions,
ensuring affinity and security of applications running on the stack.
The *Auto Adaptation Framework* (**AAF**) is the key component that makes Celadon unique.
It automatically detects and binds system kernel drivers, and loads
the :abbr:`HAL (Hardware Abstraction Layer)` modules and configurations
for a variety of devices exposed on Intel platforms.
Therefore, whether running Android applications in virtual machines (VMs)
or containers, they are all served by a single Celadon image with a unified
architecture, accelerating development of broad workload consolidation
use cases from Edge to Cloud.

.. figure:: images/civ-arch.png
:align: center

.. note::
:abbr:`CiV (Celadon in VM)` is currently under early development. This is an
early Pre-Production CiV release for evaluation and development purposes.

.. toctree::
:maxdepth: 1

on-vm
167 changes: 167 additions & 0 deletions _sources/getting-started/build-source.rst.txt
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.. _build-from-source:

Build |C| From Source
#####################

This page explains the prerequisites and steps to set up your environment,
download source code, and build |C| from source.

.. contents::
:local:
:depth: 1

Prerequisites
*************

* A 64-bit development workstation running Ubuntu\* 18.04 (Bionic Beaver)
operating system.

* One of the supported versions of python\*, either 2.7 or 3.5.6, with
python 2.7 as the default.

* Around 350GB of free disk space on your workstation is required to
checkout the source code and to store the build artifacts.

.. note::
#. Although Android\* is typically built with a GNU/Linux\* or macOS\*
operating system, we recommend you build |C| images on Ubuntu\* 18.04.
For setup instructions using other operating systems, refer to the
`Establishing a Build Environment <https://source.android.com/setup/build/initializing>`_ section on the AOSP website.
#. Also, note the `Android prerequisites <https://source.android.com/setup/build/requirements>`_ for build.

Set up the development environment
**********************************

|C| and Android source code consist of multiple Git\* repositories. The
:command:`repo` tool makes it easier to work with those repositories.

#. Create a local :file:`bin/` directory, download the :command:`repo` tool
to that directory, and make the binary executable with the following commands:

.. code-block:: bash
$ mkdir -p ~/bin
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
$ chmod a+x ~/bin/repo
$ export PATH=~/bin:$PATH
#. Install the following required packages on your 64-bit Ubuntu 18.04 LTS
development workstation prior to the compilation:

.. code-block:: bash
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk git ccache automake \
lzop bison gperf build-essential zip curl \
zlib1g-dev g++-multilib python3-networkx \
libxml2-utils bzip2 libbz2-dev libbz2-1.0 \
libghc-bzlib-dev squashfs-tools pngcrush \
schedtool dpkg-dev liblz4-tool make optipng maven \
libssl-dev bc bsdmainutils gettext python3-mako \
libelf-dev sbsigntool dosfstools mtools efitools \
python3-pystache git-lfs python3 flex clang libncurses5 \
fakeroot ncurses-dev xz-utils python3-pip ninja-build \
cryptsetup-bin cutils cmake pkg-config xorriso mtools
$ sudo pip3 install mako==1.1.0 meson==0.60.0 dataclasses
$ sudo su
$ cd /usr/local/
$ wget https://github.com/KhronosGroup/glslang/releases/download/SDK-candidate-26-Jul-2020/glslang-master-linux-Release.zip && \
$ unzip glslang-master-linux-Release.zip bin/glslangValidator && \
$ rm glslang-master-linux-Release.zip
Build |C| in VM with Android 14
*******************************

Download the source
===================

#. Enter the following commands to create an empty directory to hold the
|C| source files and serve as the working directory, and to bring down the
latest version of :command:`repo` tool, including its most recent fixes.

.. note::
The URL specifies the manifest that refers to various repositories
used by |C|, which are placed within the working directory. For now, a
:file:`.repo/` folder is created to store the manifest and the metadata of
the source repositories.

.. code-block:: bash
$ mkdir civ
$ cd civ
Note, the below :command:`repo init` command pulls the latest development
CiV source code based on *Android 14* from the master branch.

.. code-block:: bash
$ repo init -u https://github.com/projectceladon/manifest -b master -m default.xml
To continue working on the *Android 13* based CiV source code,
use the following manifest instead:

.. code-block:: bash
$ repo init -u https://github.com/projectceladon/manifest -b celadon/t/mr0/master
#. Enter the following command to pull down the |C| Android source tree to
your working directory. The :command:`repo sync` operation might take time
depending on your Internet download speed. Refer to the
`Downloading the Source <https://source.android.com/setup/build/downloading>`_
section of the AOSP website for tips to download the source behind a
proxy.

.. code-block:: bash
$ repo sync -c
.. _build-os-image:

Build |C| in VM image
=====================

#. Optionally, delete existing output of any previous build with the
following command in the top-most |C| source directory:

.. code-block:: bash
$ make clobber
#. Enter the following command to initialize the build variables with the
:file:`envsetup.sh` script:

.. code-block:: bash
$ source build/envsetup.sh
#. Specify your |C| lunch target using the :command:`lunch` command. You can
run :command:`lunch` with no arguments to choose different build
variants, and select a lunch target from a list of available options.
For example, the following commands configure the build system to
build the installer files for |C| in VM images:

.. code-block:: bash
$ lunch caas-userdebug
$ make flashfiles -j $(nproc)
.. note::
The *-j $(nproc)* argument instructs the builder to compile the source
code with parallel tasks. The generated kernelflinger executables
.ZIP file
(:file:`out/target/product/caas/caas-flashfiles-eng.${USER}.zip`
and :file:`out/target/product/caas/caas-flashfiles-eng.${USER}.iso.zip`)
is available after the build. You can refer to :ref:`caas-on-vm`
section to prepare the host environment and boot the CiV image with QEMU.


.. _ Intel® Advanced Vector Extensions (Intel® AVX): https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions
.. _Intel® Advanced Vector Extensions 2 (Intel® AVX2): https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2
.. _Comet Lake: https://en.wikipedia.org/wiki/Comet_Lake
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.. _get-started:

Getting Started
###############

The Getting Started Guide provides step-by-step instructions to build your
|C| Android images from the source repositories. This guide will help you
start using the generated images on Intel® platforms, Virtual
Machines, and Containers. This guide also explains how to contribute patches.

.. toctree::
:maxdepth: 2

as-service
naming-convention
build-source
on-bm
submit-patch
host-os-hardening
how-to
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