developer-guide: update for H Release

Issue-ID: INF-407

Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Change-Id: Ic1afd5c7226c81eb224d4c45ea4315dcd86eeedf

diff --git a/docs/developer-guide.rst b/docs/developer-guide.rst
index b5ce09f..41e1391 100755 (executable)
--- a/docs/developer-guide.rst
+++ b/docs/developer-guide.rst
@@ -24,6 +24,13 @@ Notes:
   * Debian based is the recommended platfrom.
   * The intended audiences of this guide are the developers who want to develop/integrate apps in INF platform, if you just want to install and deploy INF platform, you can ignore this guide and read the `INF Installation Guide`_
 
+Experimental feature:
+* INF project starts to support ARM64 architecture in this release as experimental feature (POC level), limited features implemented and tested.
+
+  * It can only be natively built on HPE RL300 Gen11 server (Ampere Altra).
+  * AIO-SX (std kernel) tested on VM and HPE RL300 server.
+  * AIO-DX (std kernel) tested on VM.
+
 .. _`INF Installation Guide`: https://docs.o-ran-sc.org/projects/o-ran-sc-pti-rtp/en/latest/installation-guide.html
 
 1.1 About the Debian based implementaion
@@ -136,9 +143,9 @@ The recommended and tested host is Ubuntu 16.04/18.04 and CentOS 7.
 
 * To install the required packages for Ubuntu 16.04/18.04:
 
-.. _`Compatible Linux Distribution`: https://www.yoctoproject.org/docs/2.7.3/brief-yoctoprojectqs/brief-yoctoprojectqs.html#brief-compatible-distro
-.. _`Supported Linux Distributions`: https://www.yoctoproject.org/docs/2.7.3/ref-manual/ref-manual.html#detailed-supported-distros
-.. _`Required Packages for the Build Host`: https://www.yoctoproject.org/docs/2.7.3/ref-manual/ref-manual.html#required-packages-for-the-build-host
+.. _`Compatible Linux Distribution`: https://docs.yoctoproject.org/2.7.4/brief-yoctoprojectqs/brief-yoctoprojectqs.html#brief-compatible-distro
+.. _`Supported Linux Distributions`: https://docs.yoctoproject.org/2.7.4/ref-manual/ref-manual.html#detailed-supported-distros
+.. _`Required Packages for the Build Host`: https://docs.yoctoproject.org/2.7.4/ref-manual/ref-manual.html#required-packages-for-the-build-host
 
 ::
 
@@ -174,3 +181,50 @@ The recommended and tested host is Ubuntu 16.04/18.04 and CentOS 7.
 If all go well, you will get the ISO image in:
 ${WORKSPACE}/prj_output/inf-image-yocto-aio-x86-64.iso
 
+2.4 How to build the Debian based image for ARM64 arch
+------------------------------------------------------
+
+2.4.1 Prerequisite for Debian build environment
++++++++++++++++++++++++++++++++++++++++++++++++
+
+NOTE:
+  * The build env only tested on HPE RL300 server (Ampere Altra).
+  * The build system for Debian requires a Linux system with Docker and python 3.x installed. The the following steps have been tested on Debian 11.
+
+* Refer to `Install docker on ubuntu`_ or `Install docker on centos`_ to install docker.
+* Refer to `Configure_Debian_build_environment`_ to install prerequisite packges and configure for Debian build environment.
+
+.. _`Install docker on debian`: https://docs.docker.com/engine/install/debian/
+.. _`Configure_Debian_build_environment`: https://wiki.openstack.org/wiki/StarlingX/DebianBuildEnvironment#Configure_build_environment
+
+2.4.2 Use wrapper script build_stx_debian.sh to build the Debian based image
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+::
+
+  # Get the wrapper script to build the debian image
+  $ wget -O build_stx_debian.sh 'https://gerrit.o-ran-sc.org/r/gitweb?p=pti/rtp.git;a=blob_plain;f=scripts/build_inf_debian/build_stx_debian.sh;hb=HEAD'
+
+  $ chmod +x build_stx_debian.sh
+  $ WORKSPACE=/path/to/workspace
+  $ ./build_stx_debian.sh -w ${WORKSPACE} -a arm64
+
+
+The build-image will always fail for now, do the following workaround after build-image fails:
+
+::
+
+  cd ${WORKSPACE}
+  source env.prj-stx-deb
+  cd src/stx-tools
+  source import-stx
+  
+  stx shell --container lat
+  
+  # inside the LAT pod
+  cd /localdisk
+  . /opt/LAT/SDK/environment-setup-cortexa57-wrs-linux
+  appsdk --log-dir log genimage lat.yaml
+
+If all go well, you will get the ISO image in:
+${WORKSPACE}/localdisk/deploy/starlingx-qemuarm64-cd.iso