About this repo

English

This repo is forked from https://github.com/UtsavBalar1231/kernel_xiaomi_sm8250. Thanks to @UtsavBalar1231!

The main purpose of maintaining and building this kernel is to fix this battery stuck at 1% problem, and some small changes and optimizations of defconfig. Also provide KernelSU integrated pre-built image(flashable anykernel3 zip), and a more intuitive and easy-to-use build script and build guide that allow you to try to build by yourself.

This focked branch and the pre-built kernel image/zip is based on the android14-stable branch of the original repo. It should works on both stock MIUI and third-party AOSP based Android 11-14 ROMs. I have tested with apollo(Mi 10T / Redmi K30S Ultra) with MIUI12-14/HyperOS & Android11-14, AOSP based ROM (Pixel Experience/Paranoid/LineageOS) & Android13 and 14, also lmi(Redmi K30Pro) with MIUI14.0.4 & Android 12.

Since I only have these two devices, I didn't have a chance to test other models but it should works theoretically. You are welcomed to give feedback (Issues/Pull Requests)!

Note: The zip does not include the dtbo.img and it will not replace your dtbo partition. It is recommanded to keep the stock dtbo or the dtbo from your third-party rom (If the builder comfirmed it works well). Since there are some problems with the dtbo.img which built from this source, one of them is the screen will suddently goes to the highest brightness when shut try to shut off the screen in the lock screen. If you had flashed any other third-party kernels, and you got some weird problem, you should keep an eye to check your dtbo has been replaced or not.

And, dtb is not flashed by default. (dtb is already in the zip). If you encounter some strange problems, you can try to flash it. Just uncomment # mv $home/kernels/dtb $home/dtb; in anykernel.sh.

中文

该repo fork自 https://github.com/UtsavBalar1231/kernel_xiaomi_sm8250 ，感谢 @UtsavBalar1231！

维护和编译这个内核的主要目的是想修复电量卡在1%的问题，以及defconfig有一些小的改动和优化，以及提供带KernelSU的预编译好的内核（原作的没提供有KernelSU，而且原作release里的lmi内核在我的K30Pro上无法启动，所以就想着自己编译了）。以及再提供一个更直观和易用的编译脚本和README，方便大家自己折腾和修改，编译自己的内核。

该focked分支以及release里的编译好的内核成品基于原repo的android14-stable分支，应当能在原版MIUI和第三方的基于AOSP的各种Android11-14的ROM上使用。我只在apollo(Mi 10T / Redmi K30S Ultra)上测过MIUI12-14/HyperOS & Android11-14，AOSP类原生ROM (Pixel Experience/Paranoid/LineageOS) & Android13和14；以及lmi(Redmi K30Pro)上测过MIUI14.0.4 & Android12。

由于我只有这两个设备，所以我只能用这俩手机测，其它型号我没机会测，但理论上应该能用。欢迎大家尝试并反馈（提Issue或Pull Requests）！

注意：该内核的zip包不包含dtbo.img，并且不会刷你的dtbo分区。推荐使用原厂的dtbo，或者来自第三方系统包自带的dtbo（如果原作者确认那好用的话）。因为该源码build出来的dtbo.img有些小问题，比如在锁屏界面上尝试熄屏时，屏幕会突然闪一下到最高亮度。如果你刷过其它第三方内核，或者遇到一些奇怪的问题，建议检查一下你的dtbo是否被替换过。

并且默认不刷dtb（dtb已在zip中），如果你遇到奇怪的问题，可以尝试开启刷入dtb。把anykernel.sh中的# mv $home/kernels/dtb $home/dtb;取消注释即可。

度盘备用下载链接：https://pan.baidu.com/share/init?surl=11ocz7ggZ79gzRfWvsdbJA&pwd=ty58 （建议优先从Github Release下载）

How to build

1. Prepair the basic build environment.

   You have to have the basic common toolchains, such as git, make, curl, bison, flex, zip, etc, and some other packages. In Debian/Ubuntu, you can

   sudo apt install build-essential git curl wget bison flex zip bc cpio libssl-dev ccache
   

   And also, you have to have python (only python3 is not enough). you can install the apt package python-is-python3.

   In RHEL/RPM based OS, you can

   sudo yum groupinstall 'Development Tools'
   sudo yum install wget bc openssl-devel ccache
   

   Notice: ccache is enabled in build.sh for speed up the compiling. CCACHE_DIR has been set as $HOME/.cache/ccache_mikernel in build.sh. If you don't like you can remove or modify it.

2. Download [proton-clang] compiler toolchain

   You have to have aarch64-linux-gnu, arm-linux-gnueabi, clang. Proton Clang is a good prebuilt clang cross compiler toolchain.

   The default toolchain path is $HOME/proton-clang/proton-clang-20210522/bin which is set in build.sh. If you are using another location please change TOOLCHAIN_PATH in build.sh.

   mkdir proton-clang
   cd proton-clang
   wget https://github.com/kdrag0n/proton-clang/archive/refs/tags/20210522.zip
   unzip 20210522.zip
   cd ..
   

3. Build

   Build without KernelSU:

   bash build.sh TARGET_DEVICE
   

   Build with KernelSU:

   bash build.sh TARGET_DEVICE ksu
   

   For example, build for lmi (Redmi K30 Pro/POCO F2 Pro) without KernelSU:

   bash build.sh lmi
   

   For example, build for umi (Mi 10) with KernelSU:

   bash build.sh umi ksu