UCM-iMX8M-Mini: Android: Building images

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Make sure that the necessary packages have been installed.

sudo apt-get install xz-utils make flex lib32z1 zip curl

Install repo tool:

mkdir ~/bin
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/bin/repo
chmod a+x ~/bin/repo
export PATH=${PATH}:~/bin


Download the tool chain for the A-profile architecture on arm Developer GNU-A Downloads page Recommended tool chain is gcc-arm-8.3-2019.03-x86_64-arm-eabi

export AARCH64_GCC_CROSS_COMPILE=/Where_the_tool_chain_is_installed/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/bin/aarch64-elf-
export AARCH32_GCC_CROSS_COMPILE=/Where_the_tool_chain_is_installed/gcc-arm-8.3-2019.03-x86_64-arm-eabi/bin/arm-eabi-

Getting Android source code

NXP sources

  • Untar the image:
tar -C ~/ -xf imx-android-10.0.0_2.5.0.tar.gz
  • Download and setup source:
source ~/imx-android-10.0.0_2.5.0.tar.gz/imx_android_setup.sh
export A=$(pwd)
  • Follow the instructions in the ~/imx-android-10.0.0_2.5.0.tar.gz/README and make sure that the build environment is ready.

For more details found the NXP Android User Guide

CompuLab sources

  • Clone this repository
git clone git@github.com:compulab-yokneam/imx8mm-android-q10.git
export C=$(pwd)/imx8mm-android-q10

Apply the patches

  • U-boot
git -C ${A}/vendor/nxp-opensource/uboot-imx checkout -b compulab-imx8-android android-10.0.0_2.5.0
git -C ${A}/vendor/nxp-opensource/uboot-imx am ${C}/vendor/nxp-opensource/uboot-imx/*.patch
  • ATF
git -C ${A}/vendor/nxp-opensource/arm-trusted-firmware/ checkout -b compulab-imx8-android android-10.0.0_2.5.0
git -C ${A}/vendor/nxp-opensource/arm-trusted-firmware am ${C}/vendor/nxp-opensource/arm-trusted-firmware/*.patch
  • Kernel
git -C ${A}/vendor/nxp-opensource/kernel_imx checkout -b compulab-imx8-android android-10.0.0_2.5.0
git -C ${A}/vendor/nxp-opensource/kernel_imx am ${C}/vendor/nxp-opensource/kernel_imx/*.patch
  • Board
git -C ${A}/device/fsl checkout -b compulab-imx8-android android-10.0.0_2.5.0
git -C ${A}/device/fsl am ${C}/device/fsl/*.patch

Set the machine configuration to ucm-imx8m-mini:

export MACHINE=ucm_imx8m_mini SOC=imx8mm
Admolition important.png Underscore in the MACHINE name is not a typo.

Build Android

  • Go to Android build directory and issue:
cd ${A}
source build/envsetup.sh
lunch ${MACHINE}-eng
./imx-make.sh -j16 2>&1 | tee build-log.txt

Create a bootable SD-card

Admolition note.png This sample is for an 8G-card.
  • Obtain a USB card reader and a micro-SD сard. Any commercially available micro-SD card of 16GB (or larger) may be used for the installation.
  • Plug the USB SD card reader into the host PC. Insert the micro-SD сard into the сard reader. From now we assume the device name of the MMC/SD card on your Linux PC is /dev/sdX.
  • Prepare the uSD card:
sudo dd if=/dev/zero bs=1M count=16 of=/dev/sdX
sudo partprobe /dev/sdx
  • In the Android build directory issue the following commands:
export MACHINE=ucm_imx8m_mini SOC=imx8mm
cd out/target/product/${MACHINE}
sudo ./fsl-sdcard-partition.sh -c 14 -f ${SOC} /dev/sdX

What's next?

Boot using the resulting Android SD card as described here.

Building previous versions of UCM-iMX8M-Mini Android