Coolpi 4b linux kernel开发在线更新说明

大法师

无需使用烧录工具，简单的拷贝指令即可进行内核驱动升级。

远程ssh登录或串口登录（图形桌面登录亦可）

coolpi@coolpi.local's password: 
Welcome to Ubuntu 22.04.2 LTS (GNU/Linux 5.10.110 aarch64)

 * Support:        https://www.cool-pi.com

  System information as of Sat Sep 10 02:48:03 CST 2022

  System load:  1.029296875        Processes:                295
  Usage of /:   56.5% of 14.01GB   Users logged in:          0
  Memory usage: 17%                IPv4 address for docker0: 172.17.0.1
  Swap usage:   0%                 IPv4 address for eth0:    192.168.1.250
  Temperature:  39.8 C             IPv4 address for virbr0:  192.168.122.1
Last login: Sat Sep 10 02:48:05 2022
coolpi@coolpi:~$

按实际需要更新：
1.更新内核

sudo cp vmlinuz Image /boot/firmware/

文件来源：内核源码out目录文件vmlinuz Image

2.更新驱动包

sudo rm -rf /lib/modules/5.10.110/
sudo tar -xf modules.tar.gz -C /lib

文件来源：内核源码out目录文件modules.tar.gz

3.更新设备树

sudo cp rk3588s-cp4.dtb /boot/firmware/

文件来源：内核源码out目录文件rk3588s-cp4.dtb

操作完成后，请重启系统。

lymnxn

最新版的ubuntu22.04镜像是否更改了文件架构？
目前需要将启动分区/dev/mmcblk0p1中的文件替换，并非/boot/firmware

大法师

@lymnxn 手动挂载更新。后续发布再合入

大法师

补充内核编译操作说明（如下以coolpi 4b ubuntu22.04 0306系统版本为例）：

首先下载内核源码

coolpi@coolpi:~$ git clone https://github.com/yanyitech/coolpi-kernel.git
Cloning into 'coolpi-kernel'...
remote: Enumerating objects: 8550563, done.
remote: Counting objects: 100% (5962/5962), done.
remote: Compressing objects: 100% (3084/3084), done.
remote: Total 8550563 (delta 2757), reused 5819 (delta 2648), pack-reused 8544601
Receiving objects: 100% (8550563/8550563), 1.98 GiB | 11.07 MiB/s, done.
Resolving deltas: 100% (7166058/7166058), done.
Checking objects: 100% (33554432/33554432), done.
Updating files: 100% (87196/87196), done.
coolpi@coolpi:~$

额外安装组件包

coolpi@coolpi:~$ sudo apt install -y flex bison libssl-dev
coolpi@coolpi:~$ sudo ln -sf /usr/bin/python3 /usr/bin/python

开始编译内核

coolpi@coolpi:~$ cd coolpi-kernel
coolpi@coolpi:~/coolpi-kernel$ ./build-kernel.sh cp4b