kernel_samsung_note_20_ultra

Linux kernel

There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first.

In order to build the documentation, use make htmldocs or make pdfdocs. The formatted documentation can also be read online at:

https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.

1. How to Build

    - get Toolchain
            From android git serveru, codesourcery and etc ..
            - gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-

    - make output folder 
            EX) OUTPUT_DIR=out
            $ mkdir out

    - edit Makefile
            edit "CROSS_COMPILE" to right toolchain path(You downloaded).
                    EX)  CROSS_COMPILE=<android platform directory you download>/android/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-
                    Ex)  CROSS_COMPILE=/usr/local/toolchain/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android- // check the location of toolchain
            edit "REAL_CC" to right toolchain path(You downloaded).
                    EX)  CC=<android platform directory you download>/android/vendor/qcom/proprietary/llvm-arm-toolchain-ship/10.0/bin/clang
            edit "CLANG_TRIPLE" to right path(You downloaded).

    - to Build
            $ export ARCH=arm64
            $ make -C $(pwd) O=$(pwd)/out DTC_EXT=$(pwd)/tools/dtc CONFIG_BUILD_ARM64_DT_OVERLAY=y CLANG_TRIPLE=aarch64-linux-gnu- vendor/c2q_kor_singlew_defconfig
            $ make -C $(pwd) O=$(pwd)/out DTC_EXT=$(pwd)/tools/dtc CONFIG_BUILD_ARM64_DT_OVERLAY=y CLANG_TRIPLE=aarch64-linux-gnu-

2. Output files

    - Kernel : arch/arm64/boot/Image
    - module : drivers/*/*.ko

3. How to Clean

    Change to OUTPUT_DIR folder
    EX) /home/dpi/qb5_8815/workspace/P4_1716/android/out/target/product/c2q/out
    $ make clean

中文

有几个针对内核开发人员和用户的指南。这些指南可以以多种格式呈现，例如 HTML 和 PDF。请先阅读 Documentation/admin-guide/README.rst。

要构建文档，请使用 make htmldocs 或 make pdfdocs。还可以在线阅读格式化文档：

https://www.kernel.org/doc/html/latest/

Documentation/ 子目录中有各种文本文件，其中一些使用重构文本标记表示法。有关每个文件中包含的内容的列表，请参阅 Documentation/00-INDEX。

请阅读 Documentation/process/changes.rst 文件，因为它包含构建和运行内核的要求，以及有关升级内核可能导致的问题的信息。

1. 如何构建

- 获取工具链
    从 Android git 服务器、CodeSourcery 等获取...
    - gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-

- 创建输出文件夹
    例如) OUTPUT_DIR=out
    $ mkdir out

- 编辑 Makefile
    将 "CROSS_COMPILE" 编辑为正确的工具链路径（您下载的路径）。
    例如) CROSS_COMPILE=<您下载的 Android 平台目录>/android/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-
    例如) CROSS_COMPILE=/usr/local/toolchain/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android- // 检查工具链的位置
    将 "REAL_CC" 编辑为正确的工具链路径（您下载的路径）。
    例如) CC=<您下载的 Android 平台目录>/android/vendor/qcom/proprietary/llvm-arm-toolchain-ship/10.0/bin/clang
    将 "CLANG_TRIPLE" 编辑为正确的路径（您下载的路径）。

- 构建
    $ export ARCH=arm64
    $ make -C $(pwd) O=$(pwd)/out DTC_EXT=$(pwd)/tools/dtc CONFIG_BUILD_ARM64_DT_OVERLAY=y CLANG_TRIPLE=aarch64-linux-gnu- vendor/c2q_kor_singlew_defconfig
    $ make -C $(pwd) O=$(pwd)/out DTC_EXT=$(pwd)/tools/dtc CONFIG_BUILD_ARM64_DT_OVERLAY=y CLANG_TRIPLE=aarch64-linux-gnu-

2. 输出文件

- 内核: arch/arm64/boot/Image
- 模块: drivers/*/*.ko

3. 如何清理

切换到 OUTPUT_DIR 文件夹
例如) /home/dpi/qb5_8815/workspace/P4_1716/android/out/target/product/c2q/out
$ make clean

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