System Requirements

Building an image from source with Yocto necessitates a host system with the following specifications:

• OS: Ubuntu 20.04 or Ubuntu 22.04
• CPU: 4 Core
• RAM: 8/16GB RAM (more is preferable)
• Storage: 200 GB
• SWAP space: 16GB
  • If less memory is available, additional swap space may be necessary. Insufficient memory can lead to sluggish builds and sporadic build errors.
• Network
  • The host must be connected to a network with Internet access to download all necessary source code and tools.

Set up build environment on host PC

Install required packages

• Update the host package list

sudo apt-get update

• Install required packages

For Ubuntu 20.04, please run the following:

sudo apt-get -f -y install gawk wget git-core git-lfs diffstat unzip texinfo gcc-multilib g++-multilib build-essential \
	chrpath socat cpio python python3 python3-pip python3-pexpect python-dev \
	xz-utils debianutils iputils-ping libsdl1.2-dev xterm \
	language-pack-en coreutils texi2html file docbook-utils \
	python-pysqlite2 help2man desktop-file-utils \
	libgl1-mesa-dev libglu1-mesa-dev mercurial autoconf automake \
	groff curl lzop asciidoc u-boot-tools libreoffice-writer \
	sshpass ssh-askpass zip xz-utils kpartx qemu bison flex device-tree-compiler bc rsync \
	cmake libusb-1.0.0-dev libzip-dev libbz2-dev pkg-config libssl-dev manpages-posix-dev bash \
	vim screen sudo libncurses5 zstd liblz4-tool locales

For Ubuntu 22.04, please run the following:

sudo apt-get -f -y install \
	git build-essential diffstat texinfo gawk chrpath socat doxygen \
	dos2unix python3 bison flex libssl-dev u-boot-tools mono-devel \
	mono-complete curl python3-distutils repo pseudo python3-sphinx \
	g++-multilib libc6-dev-i386 jq git-lfs pigz zstd liblz4-tool \
	cpio file lz4 debianutils iputils-ping python3-git python3-jinja2 \
	python3-subunit locales libacl1 unzip gcc python3-pip python3-pexpect \
	xz-utils wget

• Set the locale code

sudo locale-gen en_US.UTF-8

Switching to bash environment

TI Yocto utilizes oe-layersetup tool and it requires to run under bash environment.

By default, Ubuntu uses dash instead of bash. Please switch the default shell to bash using the command below:

echo "dash dash/sh boolean false" | debconf-set-selections
DEBIAN_FRONTEND=noninteractive dpkg-reconfigure dash

Build OS image for TechNexion target platform

• Common target images

Target	Build Output	Description
tisdk-default-image	images/<machine>/tisdk-default-image-<machine>.tar.xz	Target Filesystem
tisdk-jailhouse-image	images/<machine>/tisdk-jailhouse-image-<machine>.rootfs.tar.xz	Jailhouse Filesystem
tisdk-base-image	images/<machine>/tisdk-base-image-<machine>.tar.xz	Minimal Target Filesytem
tisdk-thinlinux-image	images/<machine>/tisdk-thinlinux-image-<machine>.tar.xz	Minimal Target Filesytem with docker enabled
meta-toolchain-arago-tisdk	sdk/arago-<arago-version>-<architecture>.sh	Devkit

• These are the <machine> in the command

MACHINE	Supported boards
axon-am62xx	TechNexion AXON-AM62XX - GP,HS-FS, HS-SE

Build Steps

• Fetch Yocto source code:

git clone --branch scarthgap_6.6.y https://github.com/TechNexion/tn-ti-yocto-oe-layersetup.git

cd tn-ti-yocto-oe-layersetup

./oe-layertool-setup.sh -f configs/technexion/scarthgap_6.6.58-sdk-10.01.10.04-config.txt

• Build Yocto source code:

cd build
. conf/setenv
MACHINE=<machine> bitbake -k tisdk-default-image