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# QEMU/AArch64 VIRT BSP Introduction
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[中文页 ](README_zh.md ) | English
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## 1. Introduction
The AArch64 execution state was introduced with the ARMv8 ISA for machines executing A64 instructions. This project ported RT-Thread on QEMU AArch64 VIRT machine.
## 2. Compiling
Usage ARM Developer GNU ToolChain, it support Linux and Windows:
```
https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads/
```
Download the `xxx-aarch64-none-elf` of x86_64 hosted platform, set the `RTT_EXEC_PATH` is system environment after decompress the binary.
Enter directory `rt-thread/bsp/qemu-virt64-aarch64` and input:
```
scons
```
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## 3. Execution
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The project execution tool is `qemu-system-aarch64` , the project can be configured to `Cortex-A53/A57/A72` , GIC supports `V2/V3` version, and `V2` of GIC can use 8 processors max.
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Download Windows platform from website:
```
https://www.qemu.org/download/
```
On Linux platform (Ubuntu, Deepin and so on), install QEMU by apt.
```
sudo apt update
sudo apt install qemu-system-arm
```
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Please fixup the exec scripts if modify the default configuration of the project. Run qemu.bat or qemu.sh in terminal:
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```
heap: [0x40042aa0 - 0x40142aa0]
\ | /
- RT - Thread Operating System
/ | \ 4.0.4 build Aug 6 2021
2006 - 2021 Copyright by rt-thread team
Hi, this is RT-Thread!!
msh />
```
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Use VirtIO-Console in new terminal by:
````
telnet 127.0.0.1 4321
````
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## 4. Condition
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| Driver | Condition | Remark |
| ------ | --------- | ------ |
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| UART | Support | UART0 |
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| RTC | Support | - |
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| GPIO | Support | - |
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| VIRTIO BLK | Support | - |
| VIRTIO NET | Support | - |
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| VIRTIO Console | Support | - |
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| VIRTIO GPU | Support | 2D |
| VIRTIO Input | Support | Keyboard, Mouse, Tablet |