GrassKernel

A custom kernel for the Exynos9611 devices.

Key Features • How To Build • How To Flash • Credits

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 driver, an open-source VPN driver in-kernel
• Added KernelSU

How To Build

You will need ubuntu, git, around 8GB RAM and bla-bla-bla...

# 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
$ ROM=aosp ./build_kernel.sh # (for AOSP)
$ ROM=oneui ./build_kernel.sh # (for OneUI)
$ DEVICE=m21 KSU=1 ROM=aosp ./build_kernel.sh # (for M21, AOSP and ksu)

# if you want to overclock or underclock edit these and add it to arch/arm64/configs/vendor/grass.config
CONFIG_ARM_MODCLOCK=y
CONFIG_MAX_FREQ_BIG=2314000
CONFIG_MIN_FREQ_BIG=936000
CONFIG_MAX_FREQ_LITTLE=1742000
CONFIG_MIN_FREQ_LITTLE=403000

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 $PWD/kernel_zip/GRASS* archive. This is your kernel. Just flash it via TWRP or adb sideload

Credits

• roynatech2544
• Samsung Open Source
• Android Open Source Project
• The Linux Kernel