View source for UCM-iMX8M-Mini: Android: Building images

= Prerequisites =
==repo==
Make sure that the necessary packages have been installed.<br/>
<pre>sudo apt-get install xz-utils make flex lib32z1 zip curl</pre>
Install {{filename|repo}} tool:
<pre>mkdir ~/Android/{bin,}
curl https://storage.googleapis.com/git-repo-downloads/repo > ~/Android/bin/repo
chmod a+x ~/bin/repo
export PATH=~/Android/bin:${PATH}</pre>

==GCC==
Download and unpack the tool chain under '''/opt''' folder for the A-profile architecture from: [https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads arm Developer GNU-A Downloads page]</pre>
Recommended tool chain is '''gcc-arm-8.3-2019.03-x86_64-arm-eabi'''
<pre>export AARCH64_GCC_CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-aarch64-elf/bin/aarch64-elf-
export AARCH32_GCC_CROSS_COMPILE=/opt/gcc-arm-8.3-2019.03-x86_64-arm-eabi/bin/arm-eabi-</pre>

= Getting Android source code =
==NXP sources==
* Download the NXP Android sources from this location: [https://www.nxp.com/webapp/sps/download/license.jsp?colCode=Q10.0.0_2.5.0_ANDROID_SOURCE&appType=file1&DOWNLOAD_ID=null imx-android-10.0.0_2.5.0.tar.gz]

* Untar the image:
<pre>tar -C ~/Android -xf imx-android-10.0.0_2.5.0.tar.gz</pre>

* Download and setup source:
<pre>source ~/Android/imx-android-10.0.0_2.5.0/imx_android_setup.sh
export A=$(pwd)</pre>
* Follow the instructions in the <b><i>~/Android/imx-android-10.0.0_2.5.0/README</i></b> and make sure that the build environment is ready.

For more details found [https://www.nxp.com/docs/en/user-guide/ANDROID_USERS_GUIDE.pdf the NXP Android User Guide]

==CompuLab sources==
*Clone this repository
<pre>git clone https://github.com/compulab-yokneam/imx8mm-android-q10.git
export C=$(pwd)/imx8mm-android-q10</pre>

==Apply the patches==
*U-boot
<pre>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</pre>
*ATF
<pre>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</pre>
*Kernel
<pre>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</pre>
*Board
<pre>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</pre>

Set the machine configuration to <b>ucm-imx8m-mini</b>:
<pre>export MACHINE=ucm_imx8m_mini SOC=imx8mm</pre>
{{important|1=Underscore in the MACHINE name is not a typo.}}

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

==Create a bootable SD-card==

{{note|1=This sample is for an 8G-card.}}
* Obtain a USB card reader and a micro-SD сard. Any commercially available micro-SD card of <b>16GB</b> (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 {{filename|/dev/'''sdX'''}}.
* Prepare the uSD card:
<pre>sudo dd if=/dev/zero bs=1M count=16 of=/dev/sdX
sudo partprobe /dev/sdX</pre>
* In the Android build directory issue the following commands:
<pre>export MACHINE=ucm_imx8m_mini SOC=imx8mm
cd out/target/product/${MACHINE}
sudo ./fsl-sdcard-partition.sh -c 14 -f ${SOC} /dev/sdX</pre>

==What's next?==
Boot using the resulting Android SD card as described [[UCM-iMX8M-Mini:_Android:_Running_from_SD_card#Boot from the SD-card|here]].

=Building previous versions of UCM-iMX8M-Mini Android=

* [[Building_UCM-iMX8M-Mini_Android_r1.1|Building UCM-iMX8M-Mini Android r1.1]]

[[Category:Android]]
[[Category:UCM-iMX8M-Mini]]