Add README.md of Grass Kernel specific

README.md

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+
+<h1 align="center">
+  <br>
+  <img src="https://i.ibb.co/LYYJzJC/logo.jpg" alt="Markdownify" width="2048">
+  <br>
+  GrassKernel
+  <br>
+</h1>
+
+<h4 align="center">A custom kernel for the Exynos9611 devices.</h4>
+
+<p align="center">
+  <a href="#key-features">Key Features</a> •
+  <a href="#how-to-build">How To Build</a> •
+  <a href="#how-to-flash">How To Flash</a> •
+  <a href="#credits">Credits</a>
+</p>
+
+## Key Features
+
+* Disable Samsung securities, debug drivers, etc modifications
+* Checkout and rebase against Android common kernel source, Removing Samsung additions to drivers like ext4,f2fs and more
+* Compiled with bleeding edge Neutron Clang 17, with full LLVM binutils, LTO (Link time optimization) and -O3  
+* Import Erofs, Incremental FS, BinderFS and several backports.
+* Supports DeX touchpad for corresponding OneUI ports that have DeX ported.
+* Lot of debug codes/configuration Samsung added are removed.
+* Added [wireguard](https://www.wireguard.com/) driver, an open-source VPN driver in-kernel
+* Added [KernelSU](https://kernelsu.org/)
+
+## How To Build
+
+You will need ubuntu, git, around 8GB RAM and bla-bla-bla...
+
+```bash
+# Install dependencies
+$ sudo apt install -y bash git make libssl-dev curl bc pkg-config m4 libtool automake autoconf
+
+# Clone this repository
+$ git clone https://github.com/Gojikovi/kernel_samsung_universal9611
+
+# Go into the repository
+$ cd kernel_samsung_universal9611
+
+# Install toolchain
+# You could try any clang/LLVM based toolchain, however I use neutron clang
+# If you are using Arch or distro with latest glibc, You may want to use antman instead.
+
+$ bash <(curl https://gist.githubusercontent.com/roynatech2544/0feeeb35a6d1782b186990ff2a0b3657/raw/b170134a94dac3594df506716bc7b802add2724b/setup.sh)
+
+# If you want to compile the kernel not for A51 then export DEVICE variable to m21, m31, m31s, f41
+# Build the kernel
+$ ./build_kernel.sh aosp ksu # (for AOSP)
+$ ./build_kernel.sh oneui ksu # (for OneUI)
+$ DEVICE=m21 ./build_kernel.sh aosp # (for M21, non-KSU, AOSP)
+```
+
+After build the image of the kernel will be in out/arch/arm64/boot/Image
+
+## How To Flash
+
+After a successful build, you can see the Kernel.zip archive.
+This is your kernel. Just flash it via TWRP or adb sideload
+
+## Credits
+
+- [roynatech2544](https://github.com/roynatech2544)
+- [Samsung Open Source](https://opensource.samsung.com/)
+- [Android Open Source Project](https://source.android.com/)
+- [The Linux Kernel](https://www.kernel.org/)
+
+