# 编译SDK
编译SSD202 SDK

## 编译uboot

- 环境配置

  ```shell
  export ARCH="arm"
  export CROSS_COMPILE=arm-linux-gnueabihf-
  ```

- 选取机型相关config

  ```shell
  # 配置文件目录 ssd20x-uboot-open/configs，编译WT2022
  make WT2022_defconfig
  ```

- 编译

  ```shell
  make clean
  make -j4
  ```

- **替换烧录镜像**

  ```shell
  cp ${SDK_PATH}/ssd20x-uboot-open/u-boot_spinand.xz.img.bin ${SDK_PATH}/ssd20x-images-open/WT2022/boot/u-boot_spinand.xz.img.bin
  cp ${SDK_PATH}/ssd20x-uboot-open/u-boot_spinand.xz.img.bin ${SDK_PATH}/ssd20x-images-open/WT2022/uboot_s.bin
  ```
  
- flash选型

  ```shell
  cd ${SDK_PATH}/ssd20x-images-open/partition
  ./part.sh # 默认为128MB(1Gbit)flash配置，256MB(2GBit)flash需传入2G参数
  cp cis.bin ${SDK_PATH}/ssd20x-images-open/WT2022
  ```
  
- 参与UBOOT分区制作的二进制文件详细介绍可参考：[开发 - 应用开发参考 - 系统相关 - SSD_系统分区](http://wx.comake.online/doc/doc/TAKOYAKI_DLC00V050_20211216/)


## 编译kernel

- 环境配置

  ```shell
  export ARCH="arm"
  export CROSS_COMPILE=arm-linux-gnueabihf-
  ```

- 选取机型config

  ```shell
  #配置文件目录 ssd20x-kernel-open/arch/arm/configs
  cd ${SDK_PATH}/ssd20x-kernel-open
  make WT2022_defconfig
  ```
  
- 编译

  ```shell
  make clean
  make -j4
  ```

- **替换烧录镜像**

  ```shell
  cp ./arch/arm/boot/uImage.xz ${SDK_PATH}/ssd20x-images-open/WT2022/kernel
  ```

## 制作文件系统

- ubi分区文件系统在`ssd20x-rootfs-open/ssd20x`目录下，只需解压缩文件系统，添加客制化软件即可生效功能，无需二次编译系统镜像，以在`ssd202`添加应用为例：

  ```shell
  cd ${SDK_PATH}/ssd20x-rootfs-open/ssd202
  tar zxvf root-sstar.tar.gz  # root-sstar.tar.gz为编译openwrt生成的root-sstar
  cp ${Youer_Files} ${SDK_PATH}/ssd20x-rootfs-open/ssd202/root-sstar/usr
  ```
  
- 添加好文件后，执行对应分区文件系统的打包脚本

  ```shell
  sudo apt-get install mtd-utils # 打包依赖mtd-utils，需提前安装此工具
  cd ${SDK_PATH}/ssd20x-rootfs-open
  ./mk_tools.sh
  ./mk_ubi.sh ssd202
  ```

- 替换

  ```shell
  mv root.ubi ${SDK_PATH}/ssd20x-images-open/WT2022
  ```

## 编译openwrt

- 如果需要openwrt支持额外软件功能，则需要编译sdk，替换镜像，单纯做UI开发或者驱动开发则无需执行此步骤：

  ```shell
  #获取openwrt源码
  git clone https://gitee.com/qiming-zhixian/ssd2xx-openwrt-open.git
  cd ssd2xx-openwrt-open
  git clone https://gitee.com/qiming-zhixian/ssd20x-kernel-open.git
  cd 18.06
  #更新下载软件包列表feeds
  export GIT_SSL_NO_VERIFY=1
  ./scripts/feeds update -a
  ./scripts/feeds install -a
  #生效适配好的机型配置 -> 18.06/wtconfig/WT2xxx
  make WT2022_wt
  #编译, 生成镜像路径18.06/bin/targets/sstar/ssd20x/WT2022
  make V=s -j4
  #替换烧录镜像
  cp bin/targets/sstar/ssd20x/WT2022/WT2022-uImage.xz ${SDK_PATH}/ssd20x-images-open/WT2022/kernel
  cp bin/targets/sstar/ssd20x/WT2022/WT2022-root-ubi.img ${SDK_PATH}/ssd20x-images-open/WT2022/root.ubi
  ```