The Automotive partner teams who develop front-end software need a Google-supported hardware platform on which to develop apps and user experiences.
Caveats
These limitations apply when using a Pixel 4a (5G) and Pixel 5 as development platforms:
-
The Pixel 4a (5G) and Pixel 5 are verified and supported. To learn more about the Pixel, visit the Google Store.
-
The following devices are supported but not actively tested. Be sure to download the correct
binaries and then follow the steps below:
- Pixel 3a
- Pixel 3aXL
- Pixel 4
- Pixel 4XL
- Pixel 4a
- Pixel 6 and 6 Pro (experimental)
-
You must use Android 12, build SP1A.210812.016.A1.
- Support is not provided for All Bluetooth profiles.
Prerequisites
Before you continue, confirm you have the following items:
- OEM unlocking is required. Use either an unlocked Pixel 4a (5G) or Pixel 5
- Linux desktop capable of building Android code. For more information, see Establishing a Build Environment.
Code sync and build
- To sync Android build SP1A.210812.016.A1:
mkdir aaos_on_phone cd aaos_on_phone repo init -u https://android.googlesource.com/platform/manifest -b android-12.0.0_r3 --use-superproject --partial-clone --partial-clone-exclude=platform/frameworks/base --clone-filter=blob:limit=10M repo sync -j8 -c -q
- Download the proprietary binaries and patches.
- Pixel 4a (5G). Download the 4a (5G) binaries, such as the vendor image
and Qualcomm drivers for Android 12, build SP1A.210812.016.A1:
curl --output - https://dl.google.com/dl/android/aosp/google_devices-bramble-sp1a.210812.016.a1-a60d24d5.tgz | tar -xzvf - tail -n +315 extract-google_devices-bramble.sh | tar -zxvf - curl --output - https://dl.google.com/dl/android/aosp/qcom-bramble-sp1a.210812.016.a1-3fa45eab.tgz | tar -xzvf - tail -n +315 extract-qcom-bramble.sh | tar -xzvf -
- Pixel 5. Download the Pixel 5 binaries, such as the vendor image
and Qualcomm drivers for Android 12, build SP1A.210812.016.A1:
curl --output - https://dl.google.com/dl/android/aosp/google_devices-redfin-sp1a.210812.016.a1-8813b219.tgz | tar -xzvf - tail -n +315 extract-google_devices-redfin.sh | tar -zxvf - curl --output - https://dl.google.com/dl/android/aosp/qcom-redfin-sp1a.210812.016.a1-8d32b5b1.tgz | tar -xzvf - tail -n +315 extract-qcom-redfin.sh | tar -xzvf -
- Pixel 4a (5G). Download the 4a (5G) binaries, such as the vendor image
and Qualcomm drivers for Android 12, build SP1A.210812.016.A1:
- Run the build. Be sure to replace
<target>
in the following example with eitheraosp_bramble_car
oraosp_redfin_car
:. build/envsetup.sh lunch <target> m
- Build the Automotive-related packages:
m android.hardware.automotive.audiocontrol@1.0-service android.hardware.automotive.vehicle@2.0-service
Set up the device to flash the build
If you haven't already done so, enable Developer options. Go to Settings > System > About Phone and then tap Build Number seven times.
When you've enabled Developer options:
- Go to Settings > System > Developer options and enable USB debugging and OEM unlocking:
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Flash the build
- To place the device into fastboot mode and then unlock it:
adb reboot bootloader fastboot flashing unlock
- On the device, select Unlock the Bootloader. Doing so erases all data on the device!
- To flash the build:
fastboot -w flashall
- After the build boots and the Home screen is displayed:
- To enable
adb remount
:adb root && sleep 5 && adb disable-verity && sleep 1 && adb reboot && adb wait-for-device && sleep 5 && adb root && sleep 5 && adb remount
- To push the required Automotive-specific files to the device:
adb sync vendor adb reboot
- Wait for the device to start:
Experimental
Pixel 6 and 6 Pro are supported on an experimental basis. We're working to bring these devices out of the experimental stage.
Make sure you have satisfied each prerequisite listed above:
Code sync and build
- Sync
android-12.0.0_r4
(SD1A.210817.015.A4) - Download the correct binaries for Oriole (P6) and Raven(P6 Pro) for SD1A.210817.015.A4 from https://developers.google.com/android/drivers
- Cherrypick the Android 12 patches.
- Build
aosp_oriole_car
(Pixel 6) oraosp_raven_car
(Pixel 6 Pro). - The AAOS build artifacts.
m android.hardware.automotive.audiocontrol@1.0-service android.hardware.automotive.vehicle@2.0-service
- To enable
- Flash device and enable adb remount as described in above in Step 4 remount
- Push AAOS artifacts to the device
- Optional to fix display density use following command
FILES="bin/hw/android.hardware.automotive.vehicle@2.0-service bin/hw/android.hardware.automotive.audiocontrol@1.0-service lib64/android.automotive.watchdog-V2-ndk_platform.so lib64/android.hardware.automotive.audiocontrol@1.0.so lib64/android.automotive.watchdog-V2-ndk_platform.so lib64/android.hardware.automotive.vehicle@2.0.so etc/vintf/manifest/android.hardware.automotive.vehicle@2.0-service.xml etc/vintf/manifest/audiocontrol_manifest.xml etc/init/android.hardware.automotive.audiocontrol@1.0-service.rc etc/init/android.hardware.automotive.vehicle@2.0-service.rc"; for F in $FILES ; do echo writing $F; adb push $OUT/vendor/$F vendor/$F ; done adb reboot
adb shell wm density 240 adb reboot