tmsmako / imx8mminievk-5G

Add support for 5G/LTE modems via USB on imx8mm eval boards

references

devcontainer and yocto-build script implementations are based on the following materials from NXP

• https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applications-processors:IMXLINUX
• https://www.nxp.com/docs/en/user-guide/IMX_YOCTO_PROJECT_USERS_GUIDE.pdf
• https://source.codeaurora.org/external/imx/imx-docker/tree/
• https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/Useful-bitbake-commands/ta-p/1128559
• https://easylinuxji.blogspot.com/2019/03/replace-default-splash-screen-in-yocto.html
• https://www.nxp.com/design/training/i-mx-8m-mini-and-linux-online-hands-on:TIP-I-MX-8M-MINI-AND-LINUX-ONLINE-HANDS-ON
• https://docs.docker.com/engine/reference/builder/
• https://elinux.org/Bitbake_Cheat_Sheet

kernel

enable generic cellular modem support via USB serial connection

• run bitbake virtual/kernel -c menuconfig
• set CONFIG_USB_SERIAL_OPTION=y by selecting device drivers/usb support/usb serial converter support/usb driver for GSM and CDMA modems
• save .config
• save defconfig ARCH=arm64 make savedefconfig
• overwrite defconfig file yocto/imx-{ver}-build/build_fsl-imx-xwayland/tmp/work/imx8mmevk-poky-linux/linux-imx/{kernel}/defconfig
• rebuild kernel

add recipes to image

• yocto/imx-5.10.35-2.0.0-build/conf/local.conf
• yocto/imx-5.10.35-2.0.0-build/build_fsl-imx-xwayland/conf/local.conf

package management

IMAGE_INSTALL_append = " gnupg"

modem support

IMAGE_INSTALL_append = " ppp"

• rebuild image

get list of recipes

run bitbake -g $IMAGES then look into the generated file 'pn-buildlist'

fix runc source

yocto/imx-5.10.72-2.2.0-build/sources/meta-virtualization/recipes-containers/runc/runc-opencontainers_git.bb change branch name to main