Build AOSP on ubuntu20.04 over ASUS Laptop

0. Prepare Ubuntu20.04 on laptop

Although Ubuntu 22.04 is better fitting in ASUS N7601 (2022) laptop, the building processes of AOSP on RISC-V are not suitable over it. I downgrade my Ubuntu to 20.04 for the building processes, and make a note here…

0.0. Prevent Ubuntu Black-screen on ASUS Laptop

1. Boot up from USB dongle to install ubuntu 20.04, use ‘Safe Graphic’ Mode to prevent screen blanking….

2. Select minimal install, without 3rd party driver to speedup and prevent blanking….

3. After done, ubuntu will bootup with safe vga driver.

4. run "Software & Updates" app, choose "Additional Drivers" Tab, then we can select newest NVIDIA driver, but Nouveau driver is more compatible…
   

5. Driver make video blank? Press Ctrl-Alt+F3 then Ctrl-Alt+F1 to get GUI back…

0.1. Turn on the Sound Card:

​ My laptop speakers are connected on /dev/snd/hwC1D0 soundcard, while the common hwC0D0 is the HDMI audio device. Since the speaker setting not work under Ubuntu 20.04, a little hacking after each boot up is needed.

​ The sound card registers needs to be set after bootup (for a little seconds, say 10 seconds), thus the crontab tool was used to do such setting. Steps:

1. install alsa-tools for sound card control:

   apt install alsa-tools

2. make a executable script with the following commands:

echo "sudo hda-verb /dev/snd/hwC1D0 0x20 0x500 0xf
sudo hda-verb /dev/snd/hwC1D0 0x20 0x400 0x7774
sudo hda-verb /dev/snd/hwC1D0 0x20 0x500 0x45
sudo hda-verb /dev/snd/hwC1D0 0x20 0x400 0x5289" |sudo tee /usr/local/bin/audioup

sudo chmod 755 /usr/local/bin/audioup

3. use crontab -e command to edit the cron script, add the line below to schedule the soundcard setting at 8 sec after bootup:

@reboot sleep 8; /usr/local/bin/audioup

Then the audioup script will be execute after each boot up.

0.2. Other Settings

1. fstab ? ubuntu 20.04 ‘auto’ type seems work, no need be changed

# UUID=7CD2D855D2D814EC /mnt/c          ntfs    defaults,umask=007,gid=46 0  0
/dev/disk/by-uuid/7CD2D855D2D814EC /mnt/c auto rw,uid=cyue,nosuid,nodev,nofail,x-gvfs-show 0 0

2. Links

cd ~
# 標準目錄設置
rm -rf Documents Downloads Music Pictures Favorites Videos
ln -s /mnt/c/Users/cyue1/Documents ~/Documents
ln -s /mnt/c/Users/cyue1/Downloads ~/Downloads
ln -s /mnt/c/Users/cyue1/Music ~/Music
ln -s /mnt/c/Users/cyue1/Pictures ~/Pictures
ln -s /mnt/c/Users/cyue1/Favorites ~/Favorites
ln -s /mnt/c/Users/cyue1/Videos ~/Videos

# 繁體中文添加目錄設置（optional)
rm -rf 下載 圖片 影片 文件 音樂
ln -s Documents 文件
ln -s Downloads 下載
ln -s Music 音樂
ln -s Pictures 圖片
ln -s Videos 影片

1. 工具環境：AOSP Tools & Envelopment Settings

1.1 setup repo & python

sudo wget https://storage.googleapis.com/git-repo-downloads/repo 
sudo mv repo /usr/local/bin/repo 
sudo chmod a+rx /usr/local/bin/repo
sudo ln -s /usr/bin/python3 /usr/local/bin/python

1.2 get some tools

# get tools
sudo apt install -y git-core gnupg flex bison build-essential zip curl zlib1g-dev libc6-dev-i386 libncurses5 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z1-dev libgl1-mesa-dev libxml2-utils xsltproc unzip fontconfig ninja-build python3-pip

# usb control:
sudo usermod -aG plugdev $LOGNAME
sudo apt install android-sdk-platform-tools-common

1.3 set git name & email for android.googlesource.com

git config --global user.email "cyue12@google.com"
git config --global user.name "cyue12"  

1.4 Gen. android.googlesource.com keys (optional)

1. browse & login with your google account :

https://android.googlesource.com/new-password

2. get and execute your password script generated from website:

eval 'set +o history' 2>/dev/null || setopt HIST_IGNORE_SPACE 2>/dev/null
 touch ~/.gitcookies
 chmod 0600 ~/.gitcookies

 git config --global http.cookiefile ~/.gitcookies

 tr , \\t <<\__END__ >>~/.gitcookies
android.googlesource.com,FALSE,/,TRUE,2147483647,o,git-cyue12.gmail.com=1//0g_qocQb1SED6CgYIARAAGBASNwF-L9IrNF3Ig-VWzWAvMP_Ve8jstFG-B2VhmNf6QeotHF9uaw86IxkITTqsAe0L2v_wQtLxApo
android-review.googlesource.com,FALSE,/,TRUE,2147483647,o,git-cyue12.gmail.com=1//0g_qocQb1SED6CgYIARAAGBASNwF-L9IrNF3Ig-VWzWAvMP_Ve8jstFG-B2VhmNf6QeotHF9uaw86IxkITTqsAe0L2v_wQtLxApo
__END__
eval 'set -o history' 2>/dev/null || unsetopt HIST_IGNORE_SPACE 2>/dev/null

2. 取得 AOSP 的倉庫資源

make aosp path:

mkdir aosp
cd aosp

repo init with a path for your account, then sync paralleling

#repo init -u https://android.googlesource.com/a/platform/manifest
repo init -u https://android.googlesource.com/a/platform/manifest -c -b master
repo sync -c -j20

• fail on repo? try -j1 --fail-fast again…:

  repo sync -c -j1 --fail-fast

• hint: normal repo without keys from 1.4

  repo init -u https://android.googlesource.com/platform/manifest -c -b master
  repo sync -c -j20

3. 選擇RiscV套餐建立工程

# 1. AOSP 環境參數設置
cd ~/aosp
. build/envsetup.sh

# 2. 選擇 cuttlefish riscv64 套餐
lunch 10

# 3. 先全速，失敗再用系統可穩定運行速度編譯
#m -j all
m -j14 all

4. 為 RiscV64的Cuttlefish建構最新QEMU

• 要足夠新的QEMU才能進行 RiscV64的模擬，這裡選 8.0.4。
• 自行編譯安裝的QEMU在運行 Cuttlefish時，要指定qemu安裝位置參數。如預設的安裝位置：
  -qemu_binary_dir=/usr/local/bin

1. software & update app: on "Ubuntu Software" tab, check "Source code" item.
   

2. then add qemu dependencies:

sudo apt build-dep qemu -y

3. (optional) add more supporting lib for qemu:

sudo apt install libusb-dev libsdl2-dev libsdl2-image-dev libjpeg-dev libpng-dev pulseaudio alsa virgl-server libsasl2-dev libopengl-dev  iasl indent flex bison

4. download / build / install QEMU:

wget https://download.qemu.org/qemu-9.0.2.tar.xz
tar -xvf qemu-9.0.2.tar.xz

cd qemu-9.0.2/
mkdir build
cd build

../configure
make -j
sudo make install

5. The default install path is /usr/local, thus the qemu_binary_dir parament of cuttlefish willbe ‘/usr/local/bin‘.

5. 安裝 CuttleFish

1. 在终端窗口中，下载、构建和安装主机 Debian 软件包：

cd ~
  ## 1. prepare tools
  sudo apt install -y git devscripts config-package-dev debhelper-compat golang curl ssh

  ## 2. get git
  git clone https://github.com/google/android-cuttlefish

  ## 3. build deb
  cd android-cuttlefish
  ## cyue add line, skip '@v1.31':
  sed -i 's/protoc-gen-go@v1.31/protoc-gen-go/g' frontend/debian/rules
  for dir in base frontend; do
    cd $dir
    debuild -i -us -uc -b -d
    cd ..
  done

  ## 4. install deb, *-orchestration conflicts with *-user, remark it...
  sudo dpkg -i ./cuttlefish-base_*_*64.deb || sudo apt-get install -f -y
  sudo dpkg -i ./cuttlefish-user_*_*64.deb || sudo apt-get install -f -y
  sudo dpkg -i ./cuttlefish-common_*_*64.deb || sudo apt-get install -f -y
  sudo dpkg -i ./cuttlefish-integration_*_*64.deb || sudo apt-get install -f -y
  #sudo dpkg -i ./cuttlefish-orchestration_*_*64.deb || sudo apt-get install -f -y

  ## 5. set cvd w/ kvm, then reboot to enable
  sudo usermod -aG kvm,cvdnetwork,render $USER
  sudo reboot

cuttlefish-integration 會安裝 qemu，但系統的qemu太老了，需要自行編譯最新的qemu才能跑riscv64。實測 qemu 8.0.4 OK。

重启会触发安装额外的内核模块并应用udev规则。

RISCV64的 cultterfish 未完成，許多功能不可行，但可以用VNC連接顯示。

6. 運行 Cuttlefish模擬環境，並透過VNC控制模擬

1. launch cuttlefish emulator

cd ~/aosp
. build/envsetup.sh
lunch 10

launch_cvd -cpus=8 --memory_mb=8192 --gpu_mode=drm_virgl \
-qemu_binary_dir=/usr/local/bin \
--display=width=1366,height=768 \
--start-webrtc=true

2. VNC screen. TigerVnc: connect to: locallhost:6444
   

3. about 5 minutes…

   

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Ref: gpg –import key

call:

gpg --import

then cut-n-copy following to the program and press ^D to setup GPG
key

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Version: GnuPG v1.4.2.2 (GNU/Linux)

mQGiBEnnWD4RBACt9/h4v9xnnGDou13y3dvOx6/t43LPPIxeJ8eX9WB+8LLuROSV
lFhpHawsVAcFlmi7f7jdSRF+OvtZL9ShPKdLfwBJMNkU66/TZmPewS4m782ndtw7
8tR1cXb197Ob8kOfQB3A9yk2XZ4ei4ZC3i6wVdqHLRxABdncwu5hOF9KXwCgkxMD
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-----END PGP PUBLIC KEY BLOCK-----

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