Android AOSP kernel 빌드하기

가장 강력하고 높은 수준으로 Android OS를 제어하고자 한다면 자체 빌드한 AOSP를 기기에 설치하는 것보다 좋은 방법은 없다. 다음은 grouper(넥서스 7)용 커널의 빌드 방법을 cmd 순서로 정리한 내용이다.

export ARCH=arm

export CROSS_COMPILE=`pwd`/../prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/arm-eabi-

make tegra3_android_defconfig

http://dmitry.gr/?r=06.%20Thoughts&proj=04.%20Android%20M%20on%20Grouper

#get Android M AOSP into folder called M
mkdir L
mkdir M
cd M
repo init -u https://android.googlesource.com/platform/manifest -b android-6.0.0_r1
repo sync -j4
cd ..

#get latest L AOSP into folder called L
cd L
repo init -u https://android.googlesource.com/platform/manifest -b android-5.1.1_r1
repo sync -j4
cd ..

#get blobs (except widevine)
cd M
wget https://dl.google.com/dl/android/aosp/asus-grouper-lmy47v-f395a331.tgz
wget https://dl.google.com/dl/android/aosp/broadcom-grouper-lmy47v-5671ab27.tgz
wget https://dl.google.com/dl/android/aosp/elan-grouper-lmy47v-6a10e8f3.tgz
wget https://dl.google.com/dl/android/aosp/invensense-grouper-lmy47v-ccd43018.tgz
wget https://dl.google.com/dl/android/aosp/nvidia-grouper-lmy47v-c9005750.tgz
wget https://dl.google.com/dl/android/aosp/nxp-grouper-lmy47v-18820f9b.tgz
#wget https://dl.google.com/dl/android/aosp/widevine-grouper-lmy47v-e570494f.tgz
tar xvfz asus-grouper-lmy47v-f395a331.tgz
tar xvfz broadcom-grouper-lmy47v-5671ab27.tgz
tar xvfz elan-grouper-lmy47v-6a10e8f3.tgz
tar xvfz invensense-grouper-lmy47v-ccd43018.tgz
tar xvfz nvidia-grouper-lmy47v-c9005750.tgz
tar xvfz nxp-grouper-lmy47v-18820f9b.tgz
#tar xvfz widevine-grouper-lmy47v-e570494f.tgz
dd if=extract-asus-grouper.sh bs=14466 skip=1       | tar xvz
dd if=extract-broadcom-grouper.sh bs=14464 skip=1   | tar xvz
dd if=extract-elan-grouper.sh bs=14490 skip=1       | tar xvz
dd if=extract-invensense-grouper.sh bs=14456 skip=1 | tar xvz
dd if=extract-nvidia-grouper.sh bs=14460 skip=1     | tar xvz
dd if=extract-nxp-grouper.sh bs=14452 skip=1        | tar xvz
#dd if=extract-widevine-grouper.sh bs=14446 skip=1   | tar xvz
rm *grouper-lmy47v*.tgz extract-*-grouper.sh

#cool binary patch for GL blobs
echo -n dmitrygr_libldr | dd bs=1 seek=4340 conv=notrunc of=vendor/nvidia/grouper/proprietary/libEGL_tegra.so
echo -n dgv1 | dd bs=1 seek=6758 conv=notrunc of=vendor/nvidia/grouper/proprietary/libEGL_tegra.so
echo -n dmitrygr_libldr | dd bs=1 seek=3811 conv=notrunc of=vendor/nvidia/grouper/proprietary/libGLESv1_CM_tegra.so
echo -n dgv1 | dd bs=1 seek=6447 conv=notrunc of=vendor/nvidia/grouper/proprietary/libGLESv1_CM_tegra.so

#cool binary patch for GPS blob
printf "malloc\0" | dd bs=1 seek=5246 conv=notrunc of=vendor/broadcom/grouper/proprietary/glgps

#get old device sources
cp -Rvf ../L/device/asus/grouper device/asus/grouper

#apply source patch to Nfc package (sadly we must mess with platform code here)
cd packages/apps/Nfc/
git apply ../../../../packages-apps-Nfc.patch
cd ../../..

#apply source patch to vendor repo
cd vendor
git apply ../../vendor.patch
cd ..

#apply source patch to device repo
cd device/asus/grouper
git apply ../../../../device-asus-grouper.patch
cd ../../..

#get kernel
cd ..
git clone https://android.googlesource.com/kernel/tegra.git
cd tegra
git checkout remotes/origin/android-tegra3-grouper-3.1-lollipop-mr1 -b l-mr1

#apply kernel patch
git apply ../kernel.patch

#build kernel
export CROSS_COMPILE=`pwd`/../M/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-
export ARCH=arm
make tegra3_android_defconfig
make -j4
cp arch/arm/boot/zImage ../M/device/asus/grouper/kernel
cd ../M

#build Android
source build/envsetup.sh
lunch aosp_grouper-userdebug
make -j4