Android/Kernel
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How to build the XO-4 Android kernel.
Ingredients
- a well connected development system,
- an XO-4 laptop,
- a USB ethernet adapter or USB drive,
- a serial adapter.
Method
- prepare for kernel building using the instructions in Kernel, and checkout the arm-3.5-android branch for Android 5.0, or the arm-3.5-android-4.3 branch for Android 4.x,
- use the arch/arm/configs/xo_4_android_defconfig file as .config,
- install the kernel by copying via HTTP or USB drive:
ok copy http:\\builder\vmlinuz int:\kernel ok copy u:\vmlinuz int:\kernel
Replace kernel in an old build
Build kernel following Kernel and make sure include/linux/autoconf.h and include/config/auto.conf are generated. Then start to build wifi and bt driver separately.
cd /tmp git clone git://dev.laptop.org/users/ben/android_vendor_marvell_generic -b android-4.3.1-xo4 cd android_vendor_marvell_generic/sd8787
export ARCH=arm export CROSS_COMPILE=arm-eabi- export KDR=/home/xxxxxxx/android/src/olpc_4.3.1/kernel-source
make wlan bt
Change script in mkzd.sh
replace kernel in build;
sudo cp ../../../../$out_folder/kernel boot/ ===> sudo cp /home/xxxxxxx/android/src/olpc_4.3.1/kernel-source/arch/arm/boot/zImage boot/
replace driver in build;
mkdir system sudo mount $L3 system sudo cp /tmp/android_vendor_marvell_generic/sd8787/wlan_src/mlan.ko /system/lib/modules/mlan.ko sudo cp /tmp/android_vendor_marvell_generic/sd8787/wlan_src/sd8xxx.ko /system/lib/modules/sd8787.ko sudo cp /tmp/android_vendor_marvell_generic/sd8787/mbtc_src/mbt8xxx.ko /system/lib/modules/mbt8xxx.ko sudo cp /home/xxxxxxx/android/src/olpc_4.3.1/kernel-source/drivers/net/wireless/libertas/libertas_sdio.ko /system/lib/modules/libertas_sdio.ko sudo cp /home/xxxxxxx/android/src/olpc_4.3.1/kernel-source/drivers/net/wireless/libertas/libertas_sdio.ko /system/lib/modules/libertas.ko sudo umount $L3 sudo rm -rf system
run mkzd.sh
./mkzd.sh