[bsp][rockchip][rk3500]: update readme (#10565)

* rk3566 bsp:

* Add RK3566 Code (Forked from rt-thread/tree/master/bsp/rockchip/rk3500).
* Added to the original RK3566 documentation, more detailed usage instructions.

Signed-off-by: lipeng <lipeng.git@qq.com>
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# Taishanpi-RK3566 板级支持包使用说明
中文页 | [English](./Taishanpi-RK3566_ZH.md)
## 0. 说明
此文档使用的Commit:
- `a1c642aa3a2848b47f2a1b52679dc4ee5156f2f4`
在[原有文档](./README.md)基础上面进行了文档补充和步骤说明,丰富了一下原有内容。
## 1. 介绍
这份支持包使用说明是根据[泰山派1](https://wiki.lckfb.com/zh-hans/tspi-rk3566/)所写的一份使用指南。
[泰山派1中原理图、PCB文件和软件资料全部开源](https://wiki.lckfb.com/zh-hans/tspi-rk3566/open-source-hardware/)
在本指南中会尽可能的详细介绍使用步骤和相关注意事项。
### 1.1. 芯片介绍
`Rockchip RK3566` 是中高端 `AIOT` 芯片:
- 采用`22nm`制程工艺。
- `4`核`Cortex-A55`的`64`位CPU。
- 主频高达`1.8GHz`。
- 集成`ARM Mali-G52 GPU`
- 集成`1Tops`算力的`AI`加速器`NPU`
- 支持`4K 60FPS`解码。
- 支持`1080P 60FPS`解码。
- 支持`5M ISP`和`HDR`。
### 1.2. 宿主机环境介绍
本次使用的是 `Ubuntu22.04.5 LTS Desktop` 运行在`VMware`中。
系统信息如下:
```bash
$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy
```
```bash
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy
```
`Python`版本如下:
```bash
$ python --version
Python 3.10.12
```
## 2. 环境搭建
运行下面的命令安装相关的软件包:
1. 必要工具:
```bash
sudo apt update && \
sudo apt install -y python3 python3-pip u-boot-tools device-tree-compiler
```
2. 使用`pip`安装工具:
```bash
pip3 install --user tqdm scons
```
3. 设定`python`版本:
```bash
sudo rm -rf /usr/bin/python && \
sudo ln -s /usr/bin/python3 /usr/bin/python
```
4. 下载 `RT-Thread Smart` 工具链:
```bash
wget https://download.rt-thread.org/download/rt-smart/toolchains/aarch64-linux-musleabi_for_x86_64-pc-linux-gnu_latest.tar.bz2
```
5. 解压:
```bash
sudo tar -xf aarch64-linux-musleabi_for_x86_64-pc-linux-gnu_latest.tar.bz2 -C /opt
```
5. 将工具链下载后,解压至`/opt`目录。并设置环境变量
> 直接复制全部,然后粘贴到命令行回车即可。
```bash
export RTT_CC="gcc"
export RTT_EXEC_PATH="/opt/aarch64-linux-musleabi_for_x86_64-pc-linux-gnu/bin/"
export RTT_CC_PREFIX="aarch64-linux-musleabi-"
export PATH="$RTT_EXEC_PATH:$PATH"
```
## 3. 编译
进入`rt-thread/bsp/rockchip/rk3566`目录下输入下面的命令:
进入 `menuconfig` 后直接 保存退出,生成一个 `.config` 文件:
```bash
scons --menuconfig
```
> 拉取`zlib`软件包,我们编译的时候需要用到。
```bash
source ~/.env/tools/scripts/pkgs --update
```
开始编译:
> 或者通过 `scons --exec-path="GCC工具链路径"` 命令,在指定工具链位置的同时直接编译。
```bash
scons -j$(nproc)
```
可以看到在当前`rk3566`文件夹中正常生成`rtthread.elf`与`rtthread.bin`文件。
## 3. 运行
### 3.1. 为板子烧录镜像
因为我需要在 `Uboot` 环境中使用命令进行引导 `rtthread` 系统,所以需要烧录相关的文件。
这里我是用的内核是 [泰山派1](https://wiki.lckfb.com/zh-hans/tspi-rk3566/) 的 `Rockchip Linux5.10 SDK`:
- `Github`https://github.com/TaishanPi
- 教程看 [宿主机构建方式](https://wiki.lckfb.com/zh-hans/tspi-rk3566/sdk-compilation/openkylin-sdk-compilation.html)
编译完成之后会在 `rockdev/` 目录下生成我们所需要的文件
将板子的所有镜像全部擦除:
![rockchip-clean](./figures/rockchip-clean.jpg)
然后使用`瑞芯微开发工具`烧录下面的`4`个文件:
> > 注意: 因为我们的SDK是重新进行分区的所以使用[泰山派1](https://wiki.lckfb.com/zh-hans/tspi-rk3566/)需要下面的`4`个文件,其他板子没有测试,可以自行尝试。
- `MiniLoaderAll.bin`
- `parameter.txt`
- `uboot.img`
- `boot.img`
### 3.2. 格式化TF卡
我们需要准备一张 `TF` 卡,用来存放 `rtthread.bin` 文件。
下载 `Rufus`https://rufus.org.cn/
设定为下列的模式,然后点击`开始`
![rockchip-clean](./figures/rufus.jpg)
### 3.3. 制作boot.scr
> 这里可以直接使用当前目录下的 `boot.scr`,同样也是用下面的方式制作出来的,如果有需求可以根据下面的方法自己制作。
前面我们已经安装过 `u-boot-tools` 所以直接使用即可。
创建 `boot.cmd`,并写入下面的内容:
```bash
fatload mmc 1:1 0x480000 rtthread.bin;
fatload mmc 1:1 0x8300000 tspi-rk3566-user-v10-linux.dtb;
booti 0x480000 - 0x8300000;
```
> 系统启动需要`设备树文件DTB`,这里我们[泰山派1](https://wiki.lckfb.com/zh-hans/tspi-rk3566/)的`dtb`文件是`kernel/arch/arm64/boot/dts/rockchip/tspi-rk3566-user-v10-linux.dtb`,其他的文件有不同的名字,可以根据不同的开发板选择。不然`rtthread`就会无法启动,详情请看文档最后面的 `常见问题与解决办法`
运行生成`boot.scr`
```bash
mkimage -C none -A arm -T script -d boot.cmd boot.scr
```
### 3.4. 复制文件到TF卡
将下面三个文件复制到TF中
- `boot.scr`
- `tspi-rk3566-user-v10-linux.dtb`
- `rtthread.bin`
![tf](./figures/tf.jpg)
### 3.5. 运行
连接[开发板串口->MoBaXterm](https://wiki.lckfb.com/zh-hans/tspi-rk3566/tool-use/debug-tools-use.html)
打开串口工具,选择对应串口,设置波特率为 `1500000`
因为有 `boot.scr` 会自动引导启动`rtthread`:
> 注意1如果卡死在了 `[I/rtdm.ofw] Console: uart0 (fiq-debugger)` 那么看`常见问题与解决办法`。
> 注意2记得每次`rtthread`启动失败(在`uboot`中引导失败后),都应该将开发板完全断电然后在上电,清空内存。
> 注意3如果多次自动引导失败可以手动在`uboot`界面运行 `boot.cmd` 的内容手动引导如果还不行那就要考虑其他的因素了例如TF质量问题传输到TF卡中的文件有损坏等等等。
```bash
Hit key to stop autoboot('CTRL+C'): 0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found U-Boot script /boot.scr
reading /boot.scr
197 bytes read in 3 ms (63.5 KiB/s)
## Executing script at 00c00000
reading rtthread.bin
1220848 bytes read in 104 ms (11.2 MiB/s)
reading tspi-rk3566-user-v10-linux.dtb
167469 bytes read in 17 ms (9.4 MiB/s)
Fdt Ramdisk skip relocation
No misc partition
## Flattened Device Tree blob at 0x08300000
Booting using the fdt blob at 0x08300000
Using Device Tree in place at 0000000008300000, end 000000000832be2c
No resource file: logo_kernel.bmp
** Unable to read file logo_kernel.bmp **
Failed to do_load
VP0 fail to load kernel logo
vp0, plane_mask:0x3f, primary-id:4, curser-id:-1
vp1, plane_mask:0x0, primary-id:0, curser-id:-1
vp2, plane_mask:0x0, primary-id:0, curser-id:-1
## reserved-memory:
drm-logo@00000000: addr=7df00000 size=ad000
drm-cubic-lut@00000000: addr=7ff00000 size=8000
ramoops@110000: addr=110000 size=f0000
Adding bank: 0x00200000 - 0x08400000 (size: 0x08200000)
Adding bank: 0x09400000 - 0x80000000 (size: 0x76c00000)
board seed: Pseudo
Total: 600.154/648.331 ms
Starting kernel ...
[I/rtdm.ofw] Booting RT-Thread on physical CPU 0x0
[I/rtdm.ofw] Machine model: lckfb tspi V10 Board
[I/rtdm.ofw] Earlycon: uart8250 at MMIO/PIO 0x00000000fe660000 (options '')
[I/rtdm.ofw] Memory node(1) ranges: 0x0000000000200000 - 0x0000000008400000
[I/rtdm.ofw] Memory node(1) ranges: 0x0000000009400000 - 0x0000000080000000
[I/mm.memblock] System memory:
[I/mm.memblock] [0x0000000000200000, 0x0000000008400000]
[I/mm.memblock] [0x0000000009400000, 0x0000000080000000]
[I/mm.memblock] Reserved memory:
[I/mm.memblock] [0x0000000000110000, 0x0000000000200000]
[I/mm.memblock] [0x0000000000480000, 0x00000000006d0000]
[I/mm.memblock] [0x00000000006d0000, 0x00000000046d0000]
[I/mm.memblock] [0x00000000046d0000, 0x00000000048d0000]
[I/mm.memblock] [0x00000000048d0000, 0x00000000048fa000]
[I/mm.memblock] [0x0000000008300000, 0x000000000832a000]
[I/mm.memblock] [0x000000007df00000, 0x000000007dfad000]
[I/mm.memblock] [0x000000007ff00000, 0x000000007ff08000]
[I/mm.memblock] physical memory region [0x0000000000200000-0x0000000000480000] installed to system page
[I/mm.memblock] physical memory region [0x00000000048fa000-0x0000000008300000] installed to system page
[I/mm.memblock] physical memory region [0x000000000832a000-0x0000000008400000] installed to system page
[I/mm.memblock] physical memory region [0x0000000009400000-0x000000007df00000] installed to system page
[I/mm.memblock] physical memory region [0x000000007dfad000-0x000000007ff00000] installed to system page
[I/mm.memblock] physical memory region [0x000000007ff08000-0x0000000080000000] installed to system page
[I/mm.memblock] 2055 MB memory installed to system page
[I/osi.psci] Using PSCI v1.1 Function IDs
[I/clk.rk3568] set cpu_freq to 1800000000
[I/rtdm.ofw] Console: uart0 (fiq-debugger)
\ | /
- RT - Thread Smart Operating System
/ | \ 5.2.1 build Jul 30 2025 08:58:40
2006 - 2024 Copyright by RT-Thread team
lwIP-2.1.2 initialized!
[I/sal.skt] Socket Abstraction Layer initialize success.
[I/utest] utest is initialize success.
[I/utest] total utest testcase num: (5)
[I/drivers.serial] Using /dev/ttyS0 as default console
Press any key to stop init process startup ... 3
Press any key to stop init process startup ... 2
Press any key to stop init process startup ... 1
Starting init ...
[E/DFS.fs] mount point (/proc) already mounted!
[I/rtdm.mnt] File system initialization done
Hi, this is RT-Thread!!
msh />I/TC: Secondary CPU 1 initializing
I/TC: Secondary CPU 1 switching to normal world boot
o/[C3:2 mS[eIc/ocnpdua.raya 6C4P]U 2 inCiatlila lcipzui n1g
n success
I/TC: Secondary CPU 2 switching to normal world boot
I/TC: Secondary CPU 3 initializing
I/TC: Secondary CPU 3 switching to normal world boot
[I/cpu.aa64] Call cpu 2 on success
[I/cpu.aa64] Call cpu 3 on success
msh />
msh />
```
## 常见问题与解决办法
### Could not find a valid device tree
我们没有加载 `.dtb` 设备树文件直接启动就会出现这样的情况:
```bash
Hit key to stop autoboot('CTRL+C'): 0
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> fatload mmc 1:1 0x480000 rtthread.bin
reading rtthread.bin
1220848 bytes read in 104 ms (11.2 MiB/s)
=> booti 0x480000 - 0x8300000
Fdt Ramdisk skip relocation
No misc partition
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
=>
```
> 注意:记得每次`rtthread`启动失败(在`uboot`中引导失败后),都应该将开发板完全断电然后在上电,清空内存。
然后将 `kernel/arch/arm64/boot/dts/rockchip/` 文件夹中编译之后的`.dtb`文件转移到TF卡中然后使用 `fatload`从TF卡中加载到`0x8300000`地址然后再次跳转即可。
### 卡在 `[I/rtdm.ofw] Console: uart0 (fiq-debugger)` 无法启动
大概率和你的设备树有关系,在设备树中有一个参数很重要,需要被读取:
> 这里我贴出我的参数,我的`Debug`串口硬件是`uart2m0`
> 这个`chosen` 是重要的,如果不清楚,可以参照我这么写。
```ini
chosen: chosen {
bootargs = "earlycon=uart8250,mmio32,0xfe660000 console=ttyFIQ0";
};
fiq-debugger {
compatible = "rockchip,fiq-debugger";
rockchip,serial-id = <2>;
rockchip,wake-irq = <0>;
/* If enable uart uses irq instead of fiq */
rockchip,irq-mode-enable = <1>;
rockchip,baudrate = <1500000>; /* Only 115200 and 1500000 */
interrupts = <GIC_SPI 252 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&uart2m0_xfer>;
status = "okay";
};
```

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# Taishanpi-RK3566 Board Support Package (BSP) Usage Guide
[中文页](./Taishanpi-RK3566_CN.md) | English
## 0. Code Source Statement
The commit used in this document:
- `a1c642aa3a2848b47f2a1b52679dc4ee5156f2f4`
Based on the[original documentation](./README.md), this guide supplements and elaborates on the content with additional documentation and detailed step-by-step instructions.
## 1. Introduction
This support package usage guide is written based on the[ TaishanPi 1 ](https://wiki.lckfb.com/zh-hans/tspi-rk3566/)development board.
[All schematic diagrams, PCB files, and software resources for TaishanPi 1 are open-source](https://wiki.lckfb.com/zh-hans/tspi-rk3566/open-source-hardware/)
This guide provides detailed instructions and relevant precautions.
### 1.1. Chip Introduction
`Rockchip RK3566` is a mid-to-high-end `AIOT` chip:
- Manufactured using `22nm` process technology
- Quad-core `Cortex-A55` 64-bit CPU
- Clock speed up to `1.8GHz`
- Integrated `ARM Mali-G52 GPU`
- Integrated `1Tops` AI accelerator `NPU`
- Supports `4K 60FPS` decoding
- Supports `1080P 60FPS` encoding
- Supports `5M ISP` and `HDR`
### 1.2. Host Machine Environment
This guide uses `Ubuntu22.04.5 LTS Desktop` running on`VMware`.
System information:
```bash
$ cat /etc/os-release
PRETTY_NAME="Ubuntu 22.04.5 LTS"
NAME="Ubuntu"
VERSION_ID="22.04"
VERSION="22.04.5 LTS (Jammy Jellyfish)"
VERSION_CODENAME=jammy
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=jammy
```
```bash
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.2 LTS
Release: 22.04
Codename: jammy
```
`Python`version:
```bash
$ python --version
Python 3.10.12
```
## 2. Environment Setup
Run the following commands to install required packages:
1. Essential tools:
```bash
sudo apt update && \
sudo apt install -y python3 python3-pip u-boot-tools device-tree-compiler
```
2. Install tools using `pip`:
```bash
pip3 install --user tqdm scons
```
3. Set `Python version`:
```bash
sudo rm -rf /usr/bin/python && \
sudo ln -s /usr/bin/python3 /usr/bin/python
```
4. Download `RT-Thread Smart` toolchain:
```bash
wget https://download.rt-thread.org/download/rt-smart/toolchains/aarch64-linux-musleabi_for_x86_64-pc-linux-gnu_latest.tar.bz2
```
5. Extract the toolchain:
```bash
sudo tar -xf aarch64-linux-musleabi_for_x86_64-pc-linux-gnu_latest.tar.bz2 -C /opt
```
6. Set environment variables after extraction:
```bash
export RTT_CC="gcc"
export RTT_EXEC_PATH="/opt/aarch64-linux-musleabi_for_x86_64-pc-linux-gnu/bin/"
export RTT_CC_PREFIX="aarch64-linux-musleabi-"
export PATH="$RTT_EXEC_PATH:$PATH"
```
## 3. 编译
Navigate to the `rt-thread/bsp/rockchip/rk3566` directory and run:
After entering `menuconfig`, simply save and exit to generate a `.config` file:
```bash
scons --menuconfig
```
> This command pulls the `zlib` package required for compilation.
```bash
source ~/.env/tools/scripts/pkgs --update
```
Start compilation:
> Alternatively, use `scons --exec-path="GCC toolchain path"` to specify the toolchain location directly.
```bash
scons -j$(nproc)
```
The `rtthread.elf` and `rtthread.bin` files will be generated in the current `rk3566` directory.
## 3. Running
### 3.1. Flashing the Board
To boot the `rtthread` system using U-Boot commands, flash the following files using the Rockchip development tool.
This guide uses the [ TaishanPi 1 ](https://wiki.lckfb.com/zh-hans/tspi-rk3566/) `Rockchip Linux5.10 SDK`:
- `Github`https://github.com/TaishanPi
- Tutorial [Host Machine Build Method](https://wiki.lckfb.com/zh-hans/tspi-rk3566/sdk-compilation/openkylin-sdk-compilation.html)
After compilation, required files will be in the `rockdev/` directory.
Erase all existing firmware from the board:
![rockchip-clean](./figures/rockchip-clean.jpg)
Flash these 4 files using the Rockchip Development Tool:
> > Note: The TaishanPi 1 SDK uses a custom partition layout. Other boards may require different files.
- `MiniLoaderAll.bin`
- `parameter.txt`
- `uboot.img`
- `boot.img`
### 3.2. Formatting the TF Card
Prepare a TF card to store files.
Download `Rufus`https://rufus.org.cn/
Configure with these settings and click "Start":
![rockchip-clean](./figures/rufus.jpg)
### 3.3. Creating boot.scr
> You can use the existing `boot.scr` in this directory, or create your own using the method below.
Create `boot.cmd` with the following content:
```bash
fatload mmc 1:1 0x480000 rtthread.bin;
fatload mmc 1:1 0x8300000 tspi-rk3566-user-v10-linux.dtb;
booti 0x480000 - 0x8300000;
```
> The Device Tree Blob (DTB) file is required for system startup. For TaishanPi 1, the DTB file is located at `kernel/arch/arm64/boot/dts/rockchip/tspi-rk3566-user-v10-linux.dtb`. Other boards may use different DTB files. Without the correct DTB, rtthread will fail to boot (see "Common Issues and Solutions").
Generate `boot.scr`
```bash
mkimage -C none -A arm -T script -d boot.cmd boot.scr
```
### 3.4. Copying Files to TF Card
Copy these three files to the TF card:
- `boot.scr`
- `tspi-rk3566-user-v10-linux.dtb`
- `rtthread.bin`
![tf](./figures/tf.jpg)
### 3.5. Running
Connect to the board's serial port using a tool like [MoBaXterm](https://wiki.lckfb.com/zh-hans/tspi-rk3566/tool-use/debug-tools-use.html)
- Select the correct serial port
- Set baud rate to `1500000`
With `boot.scr` present, the system will boot automatically:
> Note 1: If stuck at `[I/rtdm.ofw] Console: uart0 (fiq-debugger)`, see "Common Issues and Solutions".
> Note 2: After failed boot attempts, completely power cycle the board to clear memory.
> Note 3: If automatic boot fails, manually execute the `boot.cmd` content in U-Boot.
```bash
Hit key to stop autoboot('CTRL+C'): 0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found U-Boot script /boot.scr
reading /boot.scr
197 bytes read in 3 ms (63.5 KiB/s)
## Executing script at 00c00000
reading rtthread.bin
1220848 bytes read in 104 ms (11.2 MiB/s)
reading tspi-rk3566-user-v10-linux.dtb
167469 bytes read in 17 ms (9.4 MiB/s)
Fdt Ramdisk skip relocation
No misc partition
## Flattened Device Tree blob at 0x08300000
Booting using the fdt blob at 0x08300000
Using Device Tree in place at 0000000008300000, end 000000000832be2c
No resource file: logo_kernel.bmp
** Unable to read file logo_kernel.bmp **
Failed to do_load
VP0 fail to load kernel logo
vp0, plane_mask:0x3f, primary-id:4, curser-id:-1
vp1, plane_mask:0x0, primary-id:0, curser-id:-1
vp2, plane_mask:0x0, primary-id:0, curser-id:-1
## reserved-memory:
drm-logo@00000000: addr=7df00000 size=ad000
drm-cubic-lut@00000000: addr=7ff00000 size=8000
ramoops@110000: addr=110000 size=f0000
Adding bank: 0x00200000 - 0x08400000 (size: 0x08200000)
Adding bank: 0x09400000 - 0x80000000 (size: 0x76c00000)
board seed: Pseudo
Total: 600.154/648.331 ms
Starting kernel ...
[I/rtdm.ofw] Booting RT-Thread on physical CPU 0x0
[I/rtdm.ofw] Machine model: lckfb tspi V10 Board
[I/rtdm.ofw] Earlycon: uart8250 at MMIO/PIO 0x00000000fe660000 (options '')
[I/rtdm.ofw] Memory node(1) ranges: 0x0000000000200000 - 0x0000000008400000
[I/rtdm.ofw] Memory node(1) ranges: 0x0000000009400000 - 0x0000000080000000
[I/mm.memblock] System memory:
[I/mm.memblock] [0x0000000000200000, 0x0000000008400000]
[I/mm.memblock] [0x0000000009400000, 0x0000000080000000]
[I/mm.memblock] Reserved memory:
[I/mm.memblock] [0x0000000000110000, 0x0000000000200000]
[I/mm.memblock] [0x0000000000480000, 0x00000000006d0000]
[I/mm.memblock] [0x00000000006d0000, 0x00000000046d0000]
[I/mm.memblock] [0x00000000046d0000, 0x00000000048d0000]
[I/mm.memblock] [0x00000000048d0000, 0x00000000048fa000]
[I/mm.memblock] [0x0000000008300000, 0x000000000832a000]
[I/mm.memblock] [0x000000007df00000, 0x000000007dfad000]
[I/mm.memblock] [0x000000007ff00000, 0x000000007ff08000]
[I/mm.memblock] physical memory region [0x0000000000200000-0x0000000000480000] installed to system page
[I/mm.memblock] physical memory region [0x00000000048fa000-0x0000000008300000] installed to system page
[I/mm.memblock] physical memory region [0x000000000832a000-0x0000000008400000] installed to system page
[I/mm.memblock] physical memory region [0x0000000009400000-0x000000007df00000] installed to system page
[I/mm.memblock] physical memory region [0x000000007dfad000-0x000000007ff00000] installed to system page
[I/mm.memblock] physical memory region [0x000000007ff08000-0x0000000080000000] installed to system page
[I/mm.memblock] 2055 MB memory installed to system page
[I/osi.psci] Using PSCI v1.1 Function IDs
[I/clk.rk3568] set cpu_freq to 1800000000
[I/rtdm.ofw] Console: uart0 (fiq-debugger)
\ | /
- RT - Thread Smart Operating System
/ | \ 5.2.1 build Jul 30 2025 08:58:40
2006 - 2024 Copyright by RT-Thread team
lwIP-2.1.2 initialized!
[I/sal.skt] Socket Abstraction Layer initialize success.
[I/utest] utest is initialize success.
[I/utest] total utest testcase num: (5)
[I/drivers.serial] Using /dev/ttyS0 as default console
Press any key to stop init process startup ... 3
Press any key to stop init process startup ... 2
Press any key to stop init process startup ... 1
Starting init ...
[E/DFS.fs] mount point (/proc) already mounted!
[I/rtdm.mnt] File system initialization done
Hi, this is RT-Thread!!
msh />I/TC: Secondary CPU 1 initializing
I/TC: Secondary CPU 1 switching to normal world boot
o/[C3:2 mS[eIc/ocnpdua.raya 6C4P]U 2 inCiatlila lcipzui n1g
n success
I/TC: Secondary CPU 2 switching to normal world boot
I/TC: Secondary CPU 3 initializing
I/TC: Secondary CPU 3 switching to normal world boot
[I/cpu.aa64] Call cpu 2 on success
[I/cpu.aa64] Call cpu 3 on success
msh />
msh />
```
## Common Issues and Solutions
### Could not find a valid device tree
This error occurs when booting without loading the `.dtb` device tree file:
```bash
Hit key to stop autoboot('CTRL+C'): 0
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> <INTERRUPT>
=> fatload mmc 1:1 0x480000 rtthread.bin
reading rtthread.bin
1220848 bytes read in 104 ms (11.2 MiB/s)
=> booti 0x480000 - 0x8300000
Fdt Ramdisk skip relocation
No misc partition
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
=>
```
Solution:
1. Power cycle the board completely after failed boot attempts
2. Copy the compiled `.dtb` file from `kernel/arch/arm64/boot/dts/rockchip/` to the TF card
3. Load the `DTB` to address `0x8300000` using `fatload`
4. Execute the boot command again
### System Stuck at `[I/rtdm.ofw] Console: uart0 (fiq-debugger)`
This is typically caused by incorrect device tree configuration. The `chosen` node parameters are critical.
Example configuration for TaishanPi 1 (Debug UART: `uart2m0`):
```ini
chosen: chosen {
bootargs = "earlycon=uart8250,mmio32,0xfe660000 console=ttyFIQ0";
};
fiq-debugger {
compatible = "rockchip,fiq-debugger";
rockchip,serial-id = <2>;
rockchip,wake-irq = <0>;
/* If enable uart uses irq instead of fiq */
rockchip,irq-mode-enable = <1>;
rockchip,baudrate = <1500000>; /* Only 115200 and 1500000 */
interrupts = <GIC_SPI 252 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&uart2m0_xfer>;
status = "okay";
};
```

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