# ohos-kernel-4.19

**Repository Path**: caesar-wang/ohos-kernel-4.19

## Basic Information

- **Project Name**: ohos-kernel-4.19
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-12-28
- **Last Updated**: 2021-12-28

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 内核帮助文档

## 内核编译

方法一：调用鸿蒙OS的build.sh脚本编译：

```
./build.sh --product-name rk3566 --build-target kernel
```

方法二：单独编译内核

```
1. 进入内核目录
   cd kernel/linux-4.19
2. 导出环境变量
   1）RK3566: export PRODUCT_PATH=vendor/rockchip/rk3566
   2）RK3568: export PRODUCT_PATH=vendor/rockchip/rk3568
3. 编译内核固件
   1）编译自动匹配SN的内核：./make-ohos.sh rk356x
   2）编译没有SN的内核：./make-ohos.sh single  dtb_name    // dtb_name是开发板或产品的内核设备树dts文件名（不包含后缀）
4. 拷贝到OUT目录
   cp boot_linux.img out/ohos-arm-release/packages/phone/images/
```

## 添加开发板加入到支持列表

1. 确保新的开发板，所有同型号开发板的SN的前6位是一致的，假设为：ABCDEF

2. 在arch/arm64/boot/dts/rockchip/下创建开发板对应的内核设备树文件，假设为：rk3568-xxxx.dts

3. 修改make-ohos.sh如下：（假设次开发板的型号是：TB-NEW-V11）

   ```
   #model                   flag(the top six of SN)  dts                           multi
   product_TB_RK3568C1_C="  TC031C                   rk3568-toybrick-core-linux    1"
   product_TB_RK3568X0="    TX0356                   rk3568-toybrick-core-linux-x0 0"
   product_TB_RK3568Xs0="   TXs356                   rk3568-toybrick-core-linux    1"
   product_TB_RK3568X1_C="  TX031C                   rk3568-toybrick-core-linux-x0 0"
   product_TB_RK3568X0_C="  TX030C                   rk3568-toybrick-core-linux-x0 0"
   product_RK3566_EVB2_V11="TE2011                   rk3566-evb2-lp4x-v10-linux    0"
   product_RK3568_EVB1_V10="TE1110                   rk3568-evb1-ddr4-v10-linux    0"
   product_TB_NEW_V11="     ABCDEF                   rk3568-xxxx                   0"   <---- 添加代码
   
   product_rk356x=(
   	"${product_TB_RK3568C1_C}"
   	"${product_TB_RK3568X0}"
   	"${product_TB_RK3568Xs0}"
   	"${product_TB_RK3568X1_C}"
   	"${product_TB_RK3568X0_C}"
   	"${product_RK3566_EVB2_V11}"
   	"${product_RK3568_EVB1_V10}"
   	"${product_TB_NEW_V11}"                                                           <--- 添加代码
   	)
   ```

## RK3568 Toybrick开发板显示切换补丁

RK3568 toybrick开发板默认支持HDMI屏显示，如果需要修改成EDP屏显示，请执行如下命令打上补丁，然后再编译：

```
cd kernel/linux-4.19
git am patches/0001-arm64-boot-dts-rk3568-toybrick-enable-edp-display.patch
```