Build AOSP for ROCK960
Build environment setup
Recommend build host is Ubuntu 16.04 64bit, for other hosts, refer official Android documents Establishing a Build Environment.
$ mkdir -p ~/bin
$ wget 'https://storage.googleapis.com/git-repo-downloads/repo' -P ~/bin
$ chmod +x ~/bin/repo
Android’s source code primarily consists of Java, C++, and XML files. To compile the source code, you’ll need to install OpenJDK 8, GNU C and C++ compilers, XML parsing libraries, ImageMagick, and several other related packages.
$ sudo apt-get update
$ sudo apt-get install openjdk-8-jdk android-tools-adb bc bison build-essential curl flex g++-multilib gcc-multilib gnupg gperf imagemagick lib32ncurses5-dev lib32readline-dev lib32z1-dev libesd0-dev liblz4-tool libncurses5-dev libsdl1.2-dev libssl-dev libwxgtk3.0-dev libxml2 libxml2-utils lzop pngcrush rsync schedtool squashfs-tools xsltproc yasm zip zlib1g-dev
Configure the JAVA environment
$ 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
Download source code
$ mkdir rock960-android
$ cd rock960-android
Then run:
$ ~/bin/repo init -u https://github.com/96rocks/manifests.git -b rock960-box-7.1 -m rock960_box_7.1_release.xml
$ repo sync -j$(nproc) -c
It might take quite a bit of time to fetch the entire AOSP source code(around 86G)!
Build u-boot
$ cd u-boot
$ make rk3399_box_defconfig
$ ./mkv8.sh
$ cd ..
The generated images are rk3399_loader_v_xxx.bin and uboot.img and idbloader.img
Building kernel
$ cd kernel
$ make rockchip_defconfig
# rock960 mode ab
$ make rk3399-rock960-model-ab.img -j$(nproc)
# rock960 mode c
$ make rk3399-rock960-model-c.img -j$(nproc)
$ cd ..
The generated images are kernel.img and resource.img:
- kernel.img, kernel with rkcrc checksum
- resource.img, contains dtb and boot logo, Rockchip format resource package
Building AOSP
$ source build/envsetup.sh
$ lunch rk3399_box-userdebug
$ make -j$(nproc)
It takes a long time, take a break and wait…
Package images
$ ln -s RKTools/linux/Linux_Pack_Firmware/rockdev/ rockdev
$ ./mkimage.sh
The generated images under rockdev/Image-rk3399_box are
boot.img MiniLoaderAll.bin parameter.txt pcba_whole_misc.img resource.img trust.img
kernel.img misc.img pcba_small_misc.img recovery.img system.img uboot.img
They can be flashed with fastboot or Rockchip upgrade_tool.
Generate rkupdate images
Pack all partitions into one image.
$ cd rockdev
$ ln -s Image-rk3399_box Image
$ ./mkupdate.sh
Start to make update.img...
Android Firmware Package Tool v1.62
------ PACKAGE ------
Add file: ./package-file
Add file: ./Image/MiniLoaderAll.bin
Add file: ./Image/parameter.txt
Add file: ./Image/trust.img
Add file: ./Image/uboot.img
Add file: ./Image/misc.img
Add file: ./Image/resource.img
Add file: ./Image/kernel.img
Add file: ./Image/boot.img
Add file: ./Image/recovery.img
Add file: ./Image/system.img
Add CRC...
Make firmware OK!
------ OK ------
********RKImageMaker ver 1.63********
Generating new image, please wait...
Writing head info...
Writing boot file...
Writing firmware...
Generating MD5 data...
MD5 data generated successfully!
New image generated successfully!
Making update.img OK.
update.img is the packed image with all partitions.
Generate gpt images
Pack all partitions into one gpt image.
$ cd rockdev
$ ./android-gpt.sh
IMAGE_LENGTH:4984867
simg2img system.img
idbloader 64 16383 8.000000 MB
Warning: The resulting partition is not properly aligned for best performance.
uboot 16384 24575 4.000000 MB
trust 24576 32767 4.000000 MB
misc 32768 40959 4.000000 MB
resource 40960 73727 16.000000 MB
kernel 73728 122879 24.000000 MB
boot 122880 188415 32.000000 MB
recovery 188416 253951 32.000000 MB
backup 253952 483327 112.000000 MB
cache 483328 745471 128.000000 MB
system 745472 4939775 2048.000000 MB
metadata 4939776 4972543 16.000000 MB
baseparamer 4972544 4980735 4.000000 MB
userdata 4980736 4980735 0.000000 MB
Will be generated Image/gpt.img
Proceed to Installation Instructions