https://opensource.rock-chips.com/wiki_Graphics
如下链接文章写的比较好，值得研究。
https://blog.csdn.net/xgbing/article/details/79969640
摘一部分：
简单的理解
drm里有crtc，plane，connector这三个东西，可以理解
connector就是屏幕，比如一个hdmi一个connector num， 一个dsi一个connector num
crtc表示vop， 一个屏幕一般对应一个crtc
plane就是图层，比如视频层在plane2，UI在plane1， 视频在UI上面
宝塔是什么，可以查看demo页面
apt-get install wget curl
wget -O install.sh http://download.bt.cn/install/install-ubuntu_6.0.sh
sudo bash install.sh
安装成功后，保存账户信息用于内网面板登陆
==================================================================
Congratulations! Installed successfully!
==================================================================
外网面板地址: http://xxx.226.28.51:8888/dc404f6c
内网面板地址: http://192.168.3.xx:8888/dc404f6c
username: xxxx
password: xxxx
If you cannot access the panel,
release the following panel port [8888] in the security group
若无法访问面板，请检查防火墙/安全组是否有放行面板[8888]端口
==================================================================
Time consumed: 9 Minute!
ubuntu@coolpi:~$
root@coolpi:/home/ubuntu# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 223.6G 0 disk
├─sda1 8:1 0 300M 0 part
└─sda2 8:2 0 223.3G 0 part /
zram0 254:0 0 0B 0 disk
root@coolpi:/home/ubuntu#
root@coolpi:/home/ubuntu# parted /dev/sda print
型号：ATA KINGSTON SA400S3 (scsi)
磁盘 /dev/sda: 240GB
扇区大小 (逻辑/物理)：512B/512B
分区表：msdos
磁盘标志：
编号 起始点 结束点 大小 类型 文件系统 标志
1 1049kB 316MB 315MB primary fat32
2 316MB 240GB 240GB primary ext4
root@coolpi:/home/ubuntu#
root@coolpi:/home/ubuntu# hdparm -t --direct /dev/sda
/dev/sda:
Timing O_DIRECT disk reads: 610 MB in 3.00 seconds = 203.18 MB/sec
root@coolpi:/home/ubuntu#
ubuntu@coolpi:~$ sudo apt install python3-pip
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
python3-distutils : Depends: python3:any (>= 3.10.5-0~)
Depends: python3-lib2to3 (= 3.10.6-1~22.04) but 3.10.4-0ubuntu1 is to be installed
E: Unable to correct problems, you have held broken packages.
ubuntu@coolpi:~$
maybe the system hold some packages. Please take a try use command:
apt-mask unhold python3* python3-* libpython3*
apt install python3-pip
使用1017镜像版本，需要额外执行如下指令完成环境搭建
sudo su
apt-mark unhold libssl1.1 libdpkg-perl libc-dev-bin libc6 libc6-dev
apt update
apt install gcc make git python libncurses5-dev openssl libssl-dev build-essential pkg-config libc6-dev bison flex
下载内核本地编译
mkdir test;cd test
git clone https://gitee.com/yanyitech/coolpi-kernel.git
cd coolpi-kernel
./build-kernel.sh
编译完成，在out目录生成内核二进制文件、设备树以及驱动包
coolpi@coolpi:~/test/coolpi-kernel$ ls -lh out/
total 150M
-rw-r--r-- 1 coolpi coolpi 137M 10月 17 13:33 modules.tar.gz
-rw-r--r-- 1 coolpi coolpi 137K 10月 17 13:33 rk3588s-cp4.dtb
-rw-r--r-- 1 coolpi coolpi 13M 10月 17 13:33 vmlinuz
查看当前磁盘挂载状态
coolpi@coolpi:~/test/coolpi-kernel$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 1.9G 8.0K 1.9G 1% /dev
tmpfs 373M 1.5M 371M 1% /run
/dev/mmcblk2p2 29G 12G 16G 44% /
tmpfs 1.9G 209M 1.7G 12% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
/dev/mmcblk2p1 300M 27M 273M 9% /boot/firmware
tmpfs 373M 32K 373M 1% /run/user/1000
根据需要进行内核文件替换更新
coolpi@coolpi:~/test/coolpi-kernel$ ls -l /boot/firmware/
total 27084
-rwxr-xr-x 1 root root 176 1月 1 2021 cmdline.txt
-rwxr-xr-x 1 root root 64 8月 31 09:25 config.txt
-rwxr-xr-x 1 root root 8775086 8月 31 09:25 initrd.img
-rwxr-xr-x 1 root root 8128296 10月 17 11:11 modules.tar.gz
-rwxr-xr-x 1 root root 139847 10月 17 11:11 rk3588s-cp4.dtb
-rwxr-xr-x 1 root root 10673011 10月 17 11:11 vmlinuz
coolpi@coolpi:~/test/coolpi-kernel$
针对Cool Pi 4B主板，如需更新u-boot操作如下：
0823版本请升级到0904
下载0904版本bin文件
uboot.zip
解压zip，将bin文件拷贝到U盘或Tf卡根目录
将U盘或Tf卡插入主板，连接Debug串口到PC电脑，打开串口终端工具，主板通电，连续输入大写CP中止u-boot自动启动
备注：请注意U盘启动或升级仅支持插入USB3 下层端口
在u-boot shell命令行窗口，
针对串口输出信息如下的主板
COOLPI LOADER BY YANYI(Aug 23 2022)
DRAM: 3.7 GiB
CR: M/C/I
Using default environment
A) 如果是从U盘导入文件升级步骤
usb reset
load usb 0:1 0x800000 uboot.img
mtd erase nor0 0x200000 0x500000
mtd write nor0 0x800000 0x200000 0x500000
擦除与写入过程请勿断电或重启
B) 如果是从TF卡导入文件升级步骤
mmc dev 1
load mmc 1:1 0x800000 uboot.img
mtd erase nor0 0x200000 0x500000
mtd write nor0 0x800000 0x200000 0x500000
擦除与写入过程请勿断电或重启
等待执行完毕，确认无异常后，断电或reset即可。
升级完成后，串口输出信息如下
COOLPI LOADER BY YANYI(Sep 03 2022)
DRAM: 3.7 GiB
Using default environment
后续的升级指令封装为
c update usb|tf|mmc
tf卡升级测试：
CPBOOT# v
COOLPI LOADER BY YANYI(Sep 03 2022)
aarch64-none-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 10.3-21
GNU ld (GNU Toolchain for the A-profile Architecture 10.3-2021.07 (arm-10.29)) 1
CPBOOT# c update tf
reading uboot.img
5242880 bytes read in 428 ms (11.7 MiB/s)
wait for erase...
uboot upgrade ok...
CPBOOT# reset
u盘升级测试：
CPBOOT# v
COOLPI LOADER BY YANYI(Sep 03 2022)
aarch64-none-linux-gnu-gcc (GNU Toolchain for the A-profile Architecture 10.3-21
GNU ld (GNU Toolchain for the A-profile Architecture 10.3-2021.07 (arm-10.29)) 1
CPBOOT# c update usb
resetting USB...
Bus usb@fc880000: USB EHCI 1.00
scanning bus usb@fc880000 for devices... 2 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found
reading uboot.img
5242880 bytes read in 363 ms (13.8 MiB/s)
wait for erase...
uboot upgrade ok...
CPBOOT# reset
备注：请注意U盘启动或升级仅支持插入USB3 下层端口
Ubuntu20.04之后的版本已移除qt5-default，如需要安装，请执行如下命令：
sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools
环境补充安装：
sudo ln -sf /usr/bin/python2 /usr/bin/python
sudo apt install flex bison
可选执行
sudo dpkg-reconfigure dash
（注意弹框选择No）
测试代码下载与编译
ubuntu@coolpi:~$ mkdir test
ubuntu@coolpi:~$ cd test/
ubuntu@coolpi:~/test$ git clone https://gitee.com/yanyitech/coolpi-kernel.git
正克隆到 'coolpi-kernel'...
remote: Enumerating objects: 88605, done.
remote: Counting objects: 100% (88605/88605), done.
remote: Compressing objects: 100% (75148/75148), done.
...
查看远程仓库
ubuntu@coolpi:~/test/$ git remote -v
origin https://gitee.com/yanyitech/coolpi-kernel.git (fetch)
origin https://gitee.com/yanyitech/coolpi-kernel.git (push)
编译
ubuntu@coolpi:~/test/$ ./build-kernel.sh
修改内核配置
ubuntu@coolpi:~/test/$ make ARCH=arm64 menuconfig
sudo apt install gcc make git
git clone https://gitee.com/yanyitech/byte-unixbench.git -b v5.1.3
cd byte-unixbench/UnixBench
./Run
在Pi板设备上进行内核源代码编译
1.安装编译环境
apt install gcc make git python libncurses5-dev openssl libssl-dev build-essential pkg-config libc6-dev bison flex
root@ubuntu:~# git clone https://gitee.com/yanyitech/coolpi-kernel.git
Cloning into 'coolpi-kernel'...
remote: Enumerating objects: 88609, done.
remote: Counting objects: 100% (88609/88609), done.
remote: Compressing objects: 100% (75105/75105), done.
remote: Total 88609 (delta 12399), reused 88609 (delta 12399), pack-reused 0
Receiving objects: 100% (88609/88609), 338.05 MiB | 7.05 MiB/s, done.
Resolving deltas: 100% (12399/12399), done.
Updating files: 100% (85640/85640), done.
1. 串口引脚说明
40PIN引脚，其中第8、10、14引脚信号分别对应TXD RXD GND，3.3V TTL电平，请连接到USB转TTL模块上。
如下图：
图中标号1连接GND
图中标号2连接USB串口模块TXD
图中标号3连接USB串口模块RXD
上图中40 pin排母功能定义如下表（图中左下为编号1，左上为编号2，右下为编号39，右上为编号40）
| 默认信号功能 | 引脚编号 | 引脚编号 | 默认信号功能 |
|---|---|---|---|
| 3.3V | 1 | 2 | 5V |
| /dev/i2c1 sda | 3 | 4 | 5V |
| /dev/i2c1 scl | 5 | 6 | GND |
| gpio 47 | 7 | 8 | /dev/ttyS0 uart txd 3.3V TTL |
| GND | 9 | 10 | /dev/ttyS0 uart rxd 3.3V TTL |
| gpio 128 | 11 | 12 | gpio 39 |
| gpio 129 | 13 | 14 | GND |
| gpio 130 | 15 | 16 | /dev/ttyS2 uart txd 3.3V TTL |
| 3.3V | 17 | 18 | /dev/ttyS2 uart rxd 3.3V TTL |
| spi mosi | 19 | 20 | GND |
| spi miso | 21 | 22 | gpio 40 |
| spi clk | 23 | 24 | spi cs 0 |
| GND | 25 | 26 | spi cs 1 |
| /dev/i2c6 sda | 27 | 28 | /dev/i2c6 scl |
| gpio 131 | 29 | 30 | GND |
| gpio 132 | 31 | 32 | pwm2 |
| gpio 133 | 33 | 34 | GND |
| gpio 134 | 35 | 36 | gpio 138 |
| gpio 135 | 37 | 38 | gpio 139 |
| GND | 39 | 40 | gpio 115 |
2. 串口工具putty
串口工具不限，附件仅作为参考使用
putty.zip
电脑串口工具设置串口波特率115200，8比特数据位，1个停止位，无校验，关闭流控。
putty串口工具配置参考
本次选购配置链接
https://www.waveshare.net/wiki/5inch_DSI_LCD_(B)
使用MIPI DSI桥连接RGB屏（桥芯片TC358762或ICN6211）
RK3588集成DWC-MIPI-DSI2 ，它是一个实现 MIPI-DSI2 规范中定义的所有协议功能的控制器，兼容 D-PHY 和 C-PHY 的物理接口，支持两路的 Display Stream Compression (DSC) 数据传输，RK3588 有两个 DSI-2 控制器和两个独立的物理的 D/C-PHY，可以同时最多支持两路 MIPI 输出。
MIPI DSI基于差分信号传输，可以降低引脚数量和硬件设计复杂度，并保持良好的硬件兼容性。另外，基于MIPI DSI协议的IP还具备低功耗、低EMI的特性。
root@ubuntu:~# snap install docker
root@ubuntu:~# snap start docker
Started.
root@ubuntu:~# snap services
Service Startup Current Notes
docker.dockerd enabled active -
lxd.activate enabled inactive -
lxd.daemon enabled inactive socket-activated
root@ubuntu:~#
root@ubuntu:~# docker info
Client:
Context: default
Debug Mode: false
Server:
Containers: 0
Running: 0
Paused: 0
Stopped: 0
Images: 0
Server Version: 20.10.14
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 1
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 3df54a852345ae127d1fa3092b95168e4a88e2f8
runc version:
init version: de40ad0
Security Options:
seccomp
Profile: default
Kernel Version: 5.10.66
Operating System: Ubuntu Core 18
OSType: linux
Architecture: aarch64
CPUs: 8
Total Memory: 3.634GiB
Name: ubuntu
ID: PV2I:N6WA:XSSO:CEVD:NA3X:GJ3Q:NNAC:ZM3Y:3WI7:3O3E:LV3L:RHPE
Docker Root Dir: /var/snap/docker/common/var-lib-docker
Debug Mode: false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
root@ubuntu:~#
root@ubuntu:~# docker pull hello-world
Using default tag: latest
latest: Pulling from library/hello-world
7050e35b49f5: Pull complete
Digest: sha256:7d246653d0511db2a6b2e0436cfd0e52ac8c066000264b3ce63331ac66dca625
Status: Downloaded newer image for hello-world:latest
docker.io/library/hello-world:latest
root@ubuntu:~#
root@ubuntu:~# docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
root@ubuntu:~#
系统安装蓝牙组件
root@ubuntu:~# apt install bluez
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
bluez
0 upgraded, 1 newly installed, 0 to remove and 121 not upgraded.
Need to get 895 kB of archives.
After this operation, 4897 kB of additional disk space will be used.
Get:1 http://mirrors.aliyun.com/ubuntu-ports focal-updates/main arm64 bluez arm64 5.53-0ubuntu3.6 [895 kB]
Fetched 895 kB in 5s (180 kB/s)
Selecting previously unselected package bluez.
(Reading database ... 31634 files and directories currently installed.)
Preparing to unpack .../bluez_5.53-0ubuntu3.6_arm64.deb ...
Unpacking bluez (5.53-0ubuntu3.6) ...
Setting up bluez (5.53-0ubuntu3.6) ...
Created symlink /etc/systemd/system/dbus-org.bluez.service 鈫/lib/systemd/system/bluetooth.service.
Created symlink /etc/systemd/system/bluetooth.target.wants/bluetooth.service 鈫/lib/systemd/system/bluetooth.service.
Processing triggers for systemd (245.4-4ubuntu3.15) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for dbus (1.12.16-2ubuntu2.1) ...
root@ubuntu:~#
Basic system for ubuntu server.
链接: https://pan.baidu.com/s/17hNy8o6hUv7p4M5ruOIpuA
提取码: w00w
user: ubuntu
passwd: coolpi
Console串口登陆
网络ssh远程登陆
