3.3. Android Generic Kernel Image Support¶
3.3.1. Build Kernel in Android GKI Mode¶
3.3.1.1. Building everything from scratch¶
cd ${YOUR_PATH}/ti-kernel-aosp/
export DIST_DIR=${YOUR_PATH}/ti-aosp/device/ti/am62x-kernel/kernel/5.10-gki
export BUILD_CONFIG=./common/build.config.gki.ti
build/build.sh
3.3.1.2. Rebuilding incrementally¶
Add the SKIP_MRPROPER=1 flag:
$ cd ${YOUR_PATH}/ti-kernel-aosp/
$ export DIST_DIR=${YOUR_PATH}/ti-aosp/device/ti/am62x-prebuilts/kernel/5.10-gki
$ export BUILD_CONFIG=./common/build.config.gki.ti
$ export SKIP_MRPROPER=1
$ build/build.sh
Note
Users must have built the android kernel image prior to building the Android file system.
Otherwise pre-built Kernel images present in device/ti/am62x-kernel will be used to create boot.img
3.3.2. Build Android in Android GKI Mode¶
cd ${YOUR_PATH}/ti-aosp-12 lunch <BUILD_TARGET> m TARGET_KERNEL_USE=5.10-gki
Where BUILD_TARGET is listed in the table below :
| Android Build type | Build target |
|---|---|
| AM62X-SK Tablet userdebug | am62x-userdebug |
| AM62X-SK Tablet user | am62x-user |
| AM62X-SK Car userdebug | am62x_car-userdebug |
| AM62X-SK Car user | am62x_car-user |
| AM62X-LP-SK Tablet userdebug | am62x_lp-userdebug |
| AM62X-LP-SK Tablet user | am62x_lp-user |
| AM62X-LP-SK Car userdebug | am62x_lp_car-userdebug |
| AM62X-LP-SK Car user | am62x_lp_car-user |
Note
By default with User images AVB feature was enabled.
For userdebug images if you want to enable AVB feature you need to build with TARGET_AVB_ENABLE=true build args
cd ${YOUR_PATH}/ti-aosp-12
lunch <BUILD_TARGET>
m TARGET_KERNEL_USE=5.10-gki TARGET_AVB_ENABLE=true