2021-08-06 18:35:58 +08:00
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# QEMU/AArch64 VIRT板级支持包说明
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中文页 | [English](README.md)
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## 1. 简介
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AArch64是一种采用ARMv8 ISA，用于执行A64指令的机器的64位执行模式。本工程是在QEMU的AArch64 VIRT版本上进行的一份移植。
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## 2. 编译说明
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建议使用ARM Developer GNU交叉编译工具链，目前支持Linux/Windows平台：
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```
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https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-a/downloads/
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```
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下载x86_64 Hosted平台下载对应的`xxx-aarch64-none-elf`二进制包，解压后设置`RTT_EXEC_PATH`环境变量为该编译器的bin目录下即可。
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进入到`rt-thread/bsp/qemu-virt64-aarch64`目录进行输入：
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```
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scons
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```
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可以看到正常生成`rtthread.elf`与`rtthread.bin`文件。
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## 3. 执行
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本工程执行环境为`qemu-system-aarch64`模拟器
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Windows平台下，可以在此获取到QEMU：
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```
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https://www.qemu.org/download/
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```
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Linux平台下，以Ubuntu、Deepin系列发行版为例，可通过该命令安装QEMU：
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```
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sudo apt update
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sudo apt install qemu-system-arm
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```
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在终端执行qemu.bat或qemu.sh可以看到程序运行：
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```
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heap: [0x40042aa0 - 0x40142aa0]
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.4 build Aug 6 2021
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2006 - 2021 Copyright by rt-thread team
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Hi, this is RT-Thread!!
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msh />
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```
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## 4.支持情况
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| 驱动 | 支持情况 | 备注 |
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| ------ | ---- | :------: |
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2021-09-22 17:57:45 +08:00
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| UART | 支持 | UART0 |
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2022-01-07 13:49:06 +08:00
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| RTC | 支持 | - |
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2021-09-22 17:57:45 +08:00
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| VIRTIO BLK | 支持 | VIRTIO BLK0 |
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