So let's start over in the kernel folder. We need to add patches and enable extra hardware devices. Congratulations, you just built a kernel!īut that's not enough. Assuming all goes well, the kernel will be built into a file called arch/arm/boot/zImage. Using "make msm8974_sec_defconfig" will write the configuration file to. config files and kernels and used the default configuration file located in arch/arm/configs/msm8974_sec_defconfig. cd note3 make clean make msm8974_sec_defconfig make Let's jump into the kernel folder and make a test kernel with the default settings to make sure we get no errors. The toolchains are what builds/makes the kernels and we are just telling the system where to find the compiler. Make sure to always pay attention to the branch you are downloading.Īssuming you don't have one downloaded already: git clone toolchain export ARCH=arm export SUBARCH=arm export CROSS_COMPILE=`pwd`/toolchain/bin/arm-eabi-Īll builds are currently done with toolchain 4.7 to minimize errors during builds, but later on you may want to try changing the toolchain to 4.9 or higher.
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Making a Test Kernelįollowing the previous example, we can download his sources: git clone -b master note3 For testing purposes, lets try doing a test build. You will want to make note of his branches, with the main one being "lk-kk" so we can assume that's lean kernel Kit Kat. You will find a link to his kernel sources here. Most kernel development pages will have a link to the sources.įor an example we will use something like the Samsung Galaxy Note 3. When it comes to gaining speed and better battery life, flashing a custom kernel is the way to go.
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Luckily, one of the things that makes it so awesome is that there are tons of developers creating mods for it, since it runs stock Android by default. A good resource is usually XDA forums as someone else has probably already built a working kernel and they must provide the sources under GPL. Straight out of the box, the Nexus 5 is an awesome device, but even it can be faster with better battery life. One of the reasons why Nexus was chosen because all kernel sources are made available through Google's own website.įinding sources can be easy or difficult depending on the manufacture. This will determine which kernel sources you will need to find. At the time of this writing, Kitkat (4.4.4) is newest but Lollipop (5.0) will be available soon. Finding Kernel Sourcesīefore you start building a kernel, you need to know which Android version you are building for. First thing we want to do is build a test kernel. You have all the dependencies met and you are ready to go. Lets assume that you've already followed the directions on the main github page. Tldr If you are looking to port a device, it's all about the kernel. Root is needed so we can write applications to system, such as busybox and bootkali, and execute commands that allow us to get Kali running.
You also need a device with an unlocked bootloader, for flashing the kernel, and you must be able to get root. The kernel is integral to getting things like Bluetooth, wireless usb, and hid keyboard (etc) working. For the most part, the rootfs is not important to your Android device as it only contains Kali. Nethunter is divided by the rootfs (also known as the chroot but will refer to as rootfs) and the kernel. In order to port Nethunter to a new device, it's important to understand how Nethunter is seperated.