Compiling Android 10.0 Prerequisite System requirements Recommended hardware requirement of development workstation compiling Android 10.0: 64 bit Operating System Ubuntu 14.04 or above 16GB Physical memory + Swap memory 150GB Free disk space is used for building, and the source tree takes about 100GB Software requiements Installing JDK 8 sudo add-apt-repository ppa:openjdk-r/ppa sudo apt-get update sudo apt-get install openjdk-8-jdk Installing required packages sudo apt-get install git-core gnupg flex bison gperf libsdl1.2-dev \ libesd0-dev libwxgtk2.8-dev squashfs-tools build-essential zip curl \ libncurses5-dev zlib1g-dev pngcrush schedtool libxml2 libxml2-utils \ xsltproc lzop libc6-dev schedtool g++-multilib lib32z1-dev lib32ncurses5-dev \ lib32readline-gplv2-dev gcc-multilib libswitch-perl sudo apt-get install gcc-arm-linux-gnueabihf \ libssl1.0.0 libssl-dev \ p7zip-full Downloading Android SDK Due to the huge size of the Android SDK, it is not possible to directly host it in Gitlab. Therefore the ".git" directory is compressed as a "7z" archive file, uploaded to cloud storage server. The increment update of the SDK is saved in "git bundle" and hosted in Gitlab. Because the SDK is about 16G ,please download "firefly_rk3328_android10.0_git_20211215" first: Google Drive After the download completes, verify the MD5 checksum before extraction: $md5sum ~/firefly_rk3328_android10.0_git_20211215.7z.001 $md5sum ~/firefly_rk3328_android10.0_git_20211215.7z.002 $md5sum ~/firefly_rk3328_android10.0_git_20211215.7z.003 $md5sum ~/firefly_rk3328_android10.0_git_20211215.7z.004 1e441dffb2d13f82164ad5aa82bc5dab firefly_rk3328_android10.0_git_20211215.7z.001 676e644f0e6f1883e53cc95531aa4929 firefly_rk3328_android10.0_git_20211215.7z.002 6c8684d46ae6a9941e700168e02896a9 firefly_rk3328_android10.0_git_20211215.7z.003 9fbe55f8fe7523909fceefc87de6021e firefly_rk3328_android10.0_git_20211215.7z.004 Then extract it: mkdir -p ~/proj/firefly_rk3328_android10.0 cd ~/proj/firefly_rk3328_android10.0 7z x ~/firefly_rk3328_android10.0_git_20211215.7z.001 -r -o. git reset --hard For first and subsequent SDK update, run the following commands: #1 Download remote bundle repository git clone https://gitlab.com/TeeFirefly/rk3328-android10.0-bundle .bundle #2 If the download warehouse fails, the current bundle warehouse is about 1.4G, so there may be stuck or failed problems during synchronization. You can download and unzip it from the cloud disk link below to the SDK root directory. 7z x rk3328-android10.0-bundle.7z -r -o. && mv rk3328-android10.0-bundle/ .bundle/ #3 Update the SDK, and subsequent updates do not need to pull the remote warehouse again, just execute the following command .bundle/update #4 Follow the prompts to update the content to FETCH_HEAD, synchronize FETCH_HEAD to the firefly branch git rebase FETCH_HEAD Compiling with Firefly Scripts 32-bit full compilation ./FFTools/make.sh -d roc-rk3328-pc -j8 -l roc_rk3328_pc_32-userdebug ./FFTools/mkupdate/mkupdate.sh -l roc_rk3328_pc_32-userdebug After executing the above command, it will compile the U-Boot, kernel and upper layer of Android, sort out the partition Image and generate unified firmware "update.img", and put 64-bit firmware in the directory of "rockdev/Image-roc_rk3328_pc/",and put 32-bit firmware in the directory of "rockdev/Image-roc_rk3328_pc_32/" Modular compilation The default is 32-bit compilation. For 64 bit compilation, add "-l roc_rk3328_pc-userdebug" in the end Compiling Kernel ./FFTools/make.sh -b -j8 Compiling U-Boot ./FFTools/make.sh -u -j8 Compiling Android ./FFTools/make.sh -a -j8 Compiling all Image This will compile kernel, U-Boot and Android with a single command: ./FFTools/make.sh -j8 Compiling Without Script Before compilation, execute the following commands to configure environment variables: export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar Compiling Kernel make ARCH=arm64 firefly_defconfig android-10.config make ARCH=arm64 -j8 BOOT_IMG=../rockdev/Image-roc_rk3328_pc_32/boot.img roc-rk3328-pc.img Compiling U-Boot ./make.sh rk3328 Compiling Android source build/envsetup.sh lunch roc_rk3328_pc_32-userdebug make installclean make -j8 ./mkimage.sh Packing Rockchp Firmware Packing Fimware in Linux After compiling you can use Firefly official script to pack all partition image files into the one true Rockchip firmware, by executing the following command: ./FFTools/mkupdate/mkupdate.sh -l roc_rk3328_pc_32-userdebug The resulting file is "rockdev/Image-rk3328_roc_pc_box/update.img". The RK firmware needs to use the "SD_Firmware_Tool" tool and the function mode to select "SD Startup" to create the boot card Packing Fimware in Windows It is also very simple in packaging Rockchip firmware "update.img" under Windows: Copy all the compiled files in rockdev/Image-rk3328_roc_pc_box/ to the rockdev\Image directory of AndroidTool Run the mkupdate.bat batch file in the rockdev directory of AndroidTool. update.img will be created in rockdev\Image directory. Some Introduction about Compiling Android 10.0 can't be written directly kernel.img and resource.img Android 10.0 kernel.img and resource.img Included in boot.img After the kernel is updated and compiled, it needs to be executed in the Android root directory mkimage.sh Repackage boot.img .After packing, download boot.img in rockdev directory .You can compile the kernel separately by using the following instruction. Compiling kernel generation separately boot.img Principle of compilation: in the kernel directory, the generated kernel.img And resource.img Replace with old boot.img So you need to use boot when compiling IMG = XXX parameter specification boot.img The command is as follows: cd kernel make ARCH=arm64 firefly_defconfig android-10.config make ARCH=arm64 BOOT_IMG=../rockdev/Image-roc_rk3328_pc_32/boot.img roc-rk3328-pc.img -j24 After compiling, you can directly download the boot.img To the machine. Partition image boot.img include ramdis、kernel、dtb dtbo.img Device Tree Overlays kernel.img Currently, it cannot be burned separately, it needs to be packaged into boot.img to burn and write MiniLoaderAll.bin include first loader misc.img include recovery-wipe boot flag information ，enter recovery after download odm.img include android odm，included in super.img partition ,upgrade alone by the fastboot tool parameter.txt include partition information pcba_small_misc.img include pcba boot flag information，enter the simple pcba mode after upgrade pcba_whole_misc.img include pcba boot flag information，enter the full pcba mode after upgrade recovery.img include recovery-ramdis、kernel、dtb resource.img include dtb，kernel and uboot phases log and the uboot charging logo,it should be packed into boot.img,then upgrade it system.img include android system，included in super.img partition ,upgrade alone by the fastboot tool trust.img include BL31、BL32 uboot.img include uboot.img vbmeta.img include avb，for AVB verify vendor.img include android vendor，included in super.img partition ,upgrade alone by the fastboot tool update.img include all the img file above，use tools to upgrade the whole firmware package Flash Image Reference: 《Flash Image》 Other Android versions Note：The following SDKs can be used, but mainly maintain Android 10.0 《android_compile_android7》 《android_compile_android8》