查看“MYZR-IMX8M-EK300 Linux-4.14.98 编译参考手册”的源代码

## MY-i.MX8M Linux 编译手册

### 1. 安装交叉编译工具

- 创建目录

```shell
=> mkdir ~/myimx8m/gcc-tool -p
=> cd ~/myimx8m/gcc-tool
```

- 下载交叉编译工具

```shell
=> wget https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/aarch64-linux-gnu/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.tar.xz
```

- 解压交叉编译工具

```shell
=> tar -xvf gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.tar.xz -C ~/myimx8m/gcc-tool
```

- 创建交叉编译工具配置脚本

```shell
=> vim gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.env

# 输入如下内容
#!/bin/sh
export PATH=${HOME}/gcc-tool/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin:${PATH}
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
```

```shell
# 赋予脚本执行权限
=> chmod +x gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.env
```

- 配置交叉编译环境变量

```shell
=> source ~/myimx8m/gcc-tool/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.env
```

- 验证安装

```shell
=> ${CROSS_COMPILE}gcc -v

Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/myzr/my-work/03_toolchain/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin/../libexec/gcc/aarch64-linux-gnu/7.3.1/lto-wrapper
Target: aarch64-linux-gnu
Configured with: '/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/snapshots/gcc.git~linaro-7.3-2018.05/configure' SHELL=/bin/bash --with-mpc=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libmudflap --enable-lto --enable-shared --without-included-gettext --enable-nls --with-system-zlib --disable-sjlj-exceptions --enable-gnu-unique-object --enable-linker-build-id --disable-libstdcxx-pch --enable-c99 --enable-clocale=gnu --enable-libstdcxx-debug --enable-long-long --with-cloog=no --with-ppl=no --with-isl=no --disable-multilib --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419 --with-arch=armv8-a --enable-threads=posix --enable-multiarch --enable-libstdcxx-time=yes --enable-gnu-indirect-function --with-build-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/sysroots/aarch64-linux-gnu --with-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu/aarch64-linux-gnu/libc --enable-checking=release --disable-bootstrap --enable-languages=c,c++,fortran,lto --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=aarch64-linux-gnu --prefix=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: posix
gcc version 7.3.1 20180425 [linaro-7.3-2018.05 revision d29120a424ecfbc167ef90065c0eeb7f91977701] (Linaro GCC 7.3-2018.05) 
```



### 2. 内核编译

#### 2.1 准备源码

- 创建目录

```shell
=> mkdir ~/myimx8m/source -p
```

- 下载源码

  打开网盘到 “2.1\_OS\_Linux-4.14.98 -> 02_Source”，下载 “linux-4.14.98.*.tar.bz2”。  
  把源码包复制到虚拟机的 “~/myimx8m/source”，并解压（解压命令如下）：

```shell
=> cd ~/myimx8m/source
=> tar -xvf linux-4.14.98.*.tar.bz2
```

- 进入内核源码目录

```shell
=> cd ~/myimx8m/source/linux-4.14.98
```

- 配置交叉编译环境

```shell
=> source ~/myimx8m/gcc-tool/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.env
```

#### 2.2 编译内核目标文件

- 生成目标.config文件

```shell
=> make myimx8mq_defconfig
```

- 编译内核目标文件

```shell
=> make Image
```

- 复制内核目标文件

```shell
=> cp arch/arm64/boot/Image ./
```

#### 2.3 编译设备树目标文件

- 根据开发板型号规格配置编译环境变量

```shell
=> EVK_MODE=myimx8mek300
=> EVK_MPU=8mq
```

- 执行编译命令

```shell
# MIPI输出
=> make myzr/${EVK_MODE}-${EVK_MPU}.dtb
# HDMI输出
=> make myzr/${EVK_MODE}-${EVK_MPU}-hdmi.dtb
```

- 复制设备树目标文件

```shell
=> cp arch/arm64/boot/dts/myzr/${EVK_MODE}-${EVK_MPU}.dtb ./
=> cp arch/arm64/boot/dts/myzr/${EVK_MODE}-${EVK_MPU}-hdmi.dtb ./
```

#### 2.4 编译内核模块包

- 执行编译

```shell
=> make modules
```

- 创建内核模块的保存目录

```shell
=> mkdir modules
```

- 安装内核模块到指定目录

```shell
=> make modules_install headers_install INSTALL_MOD_PATH=./modules
```

- 打包内核模块文件

```shell
=> tar -cjf kernel-modules.tar.bz2 -C modules lib
```

####  2.5 目标文件

**Image、\*.dtb 和 kernel-modules.tar.bz2 即编译得到的目标文件，保存这些文件**



### 3. 编译u-boot文件

#### 3.1  编译前的准备

- 下载u-boot源码

  打开网盘到 “2.1\_OS\_Linux-4.14.98 -> 02_Source”，下载 “u-boot-2018.03.*.tar.bz2”。

  把源码包复制到虚拟机的 “~/myimx8m/source”，并解压（解压命令如下）：

```shell
=> cd ~/myimx8m/source
=> tar -xvf u-boot-2018.03.*.tar.bz2
```

- 进入uboot源码目录

```shell
=> cd ~/myimx8m/source/u-boot-2018.03
```

- 配置交叉编译环境变量

```shell
=> source ~/myimx8m/gcc-tool/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu.env
```

#### 3.2 编译u-boot目标文件

- 根据开发板型号规格配置编译环境变量

```shell
=> EVK_MODE=myimx8mek300
=> EVK_MPU=8mq
=> EVK_MEM=2g
```

**EVK_MEM：支持的设置为 2g、1g、3g、4g。**

- 生成目标 .config 文件

```shell
=> make ${EVK_MODE}-${EVK_MPU}-${EVK_MEM}_defconfig
```

- 编译u-boot目标文件

```shell
=> make
```

- 复制u-boot目标文件

```shell
=> cp arch/arm/dts/${EVK_MODE}-${EVK_MPU}.dtb ./
```

#### 3.3 目标文件

	**${EVK_MODE}-${EVK_MPU}.dtb、u-boot-nodtb.bin 和 u-boot-spl.bin 即编译得到的目标文件，保存这三个文件，在下一步的 bootloader 编译需要用到**

#### 3.4 编译BootLoader

##### 3.4.1 编译前的准备

- 下载BootLoader编译工具 
  打开网盘到 “2.1\_OS\_Linux-4.14.98 -> 02_Source”，下载 “mkimage-4.14.98.*.tar.bz2”。 
  把源码包复制到虚拟机的 “~/myimx8m/source/”，并解压（解压命令如下）：

```shell
=> cd ~/myimx8m/source
=> tar -xvf mkimage-4.14.98.*.tar.bz2
```

- 进入工具目录

```shell
=> cd ~/myimx8m/source/mkimage-4.14.98
```

- 根据开发板型号规格配置编译环境变量

```shell
=> EVK_MODE=myimx8mek300
=> EVK_MPU=8mq
=> EVK_MEM=2g
=> EVK_SOC=iMX8M
```

**EVK_MEM：支持的设置为 2g、1g、3g、4g；**

- 复制依赖文件

  把u-boot编译得到的三个文件复制过来。

```shell
=> cp ../u-boot-2018.03/u-boot-nodtb.bin \
./iMX8M/${EVK_MODE}-${EVK_MPU}-${EVK_MEM}-nodtb.bin
=> cp ../u-boot-2018.03/spl/u-boot-spl.bin \
./iMX8M/${EVK_MODE}-${EVK_MPU}-${EVK_MEM}-spl.bin
=> cp ../u-boot-2018.03/${EVK_MODE}-${EVK_MPU}.dtb \
./iMX8M/${EVK_MODE}-${EVK_MPU}.dtb
```

##### 3.4.2 编译BootLoader目标文件

- 输入编译指令

```shell
=> make SOC=${EVK_SOC} ${EVK_MODE} OUTIMG=${EVK_MODE}-${EVK_MPU}-${EVK_MEM}.bin
```

- 复制BootLoader目标文件

```shell
=> cp ./iMX8M/${EVK_MODE}-${EVK_MPU}-${EVK_MEM}.bin ./${EVK_MODE}-${EVK_MPU}.bin
```

##### 3.4.3 目标文件

**${EVK_MODE}-${EVK_MPU}.bin 即编译得到的目标文件，保存这个文件**
 
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* 珠海明远智睿科技有限公司  
* ZhuHai MYZR Technology CO.,LTD.
* Latest Update: 2019/11/08  
* Supporter: Tang Bin
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