[bsp][qemu-riscv-virt64]add English README.md
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# QEMU/RISCV64 VIRT板级支持包说明
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# QEMU/RISCV64 VIRT BSP Introduction
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## 1. 简介
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[中文页](README_ZH.md) | English
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RISC-V是一种开放和免费的指令集体系结构(ISA)。本工程是在QEMU的RISCV64 VIRT版本上进行的一份移植。
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RISC-V is a free and open ISA enabling a new era of processor innovation through open standard collaboration. This project ported RT-Thread on QEMU RISCV64 VIRT machine.
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## 2. 编译说明
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## 1. Compiling
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Download the cross compiler tool chain, it is recommended to use the sifive tool chain.
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首先可以下载交叉编译工具链,建议采用sifive的工具链进行编译。
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```
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https://www.sifive.com/software
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```
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选择对应的平台即可。
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这里推荐在Ubuntu上进行开发工作。
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Select the fitting platform, we recommend Ubuntu.
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解压工具链到指定的目录。
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Unzip the tool chain to the specified directory.
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```
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export RTT_EXEC_PATH=~/gcc/bin
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```
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进入到`rt-thread/bsp/qemu-riscv-virt64`目录进行输入
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Enter `rt-thread/bsp/qemu-riscv-virt64` directory and input
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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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`rtthread.elf` and `rtthread .bin` files are generated.
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本工程提供了riscv64的两种可配置运行模式,默认运行在M-Mode下。
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## 2. Execution
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*M-Mode*
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The project provides two configurable operating modes for riscv64, defaults to run under M-Mode.
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首先安装`qemu-system-riscv64`。
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***M-Mode***
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Firstly, install the `qemu-system-riscv64`.
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```
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sudo apt install qemu-system-misc
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```
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直接输入
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Then enter
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```
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./qemu-nographic.sh
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```
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可以看到程序运行
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You'll see Project start running
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```
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heap: [0x80035804 - 0x86435804]
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@ -54,39 +59,45 @@ Hello RISC-V!
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msh />
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```
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*S-Mode*
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***S-Mode***
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如果运行在S-Mode下，那么需要通过menuconfig选择配置
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When running in S-Mode, configuration is via menuconfig
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```
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scons --menuconfig
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```
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选择如下：
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Select:
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```
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RISCV qemu virt64 configs --->
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[*] RT-Thread run in riscv smode
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```
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保存后，重新`scons`编译即可。
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要让rt-thread运行在S-Mode，首先需要启动opensbi,然后通过opensbi启动rt-thread。
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Save it and compile `scons`.
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自行编译的qemu或者下载的高版本的qemu内置opensbi，执行`./qemu-nographic-smode.sh`即可正常运行。
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To get RT-Thread running in S-Mode, enable the opensbi, and then start up the RT-Thread through opensbi.
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通过`sudo apt install qemu-system-misc`安装的qemu版本较低，可自行编译opensbi。
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Compile qemu or downloaded premiere-version qemu that built-in opensbi, then executing `./qemu-nographic-smode.sh` can get it successfully running.
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The qemu installed with `sudo apt install qemu-system-misc` is an ordinary-version and may compile the opensbi on its own.
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```
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git clone git@github.com:riscv/opensbi.git
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cd opensbi
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make PLATFORM=generic CROSS_COMPILE=~/gcc/bin/riscv64-unknown-elf-
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```
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最后生成的`/build/platform/generic/firmware/fw_jump.elf`则是需要的文件。
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输入以下的命令即可运行:
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`/build/platform/generic/firmware/fw_jump.elf` file is generated.
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Enter the following command to run:
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```
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qemu-system-riscv64 -nographic -machine virt -m 256M -kernel rtthread.bin -bios ~/opensbi/build/platform/generic/firmware/fw_jump.elf
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```
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可以看到如下的结果
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Result is shown as follows:
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```
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OpenSBI v0.9
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____ _____ ____ _____
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@ -121,16 +132,11 @@ heap: [0x80235a58 - 0x86635a58]
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Hello RISC-V!
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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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| UART | 支持 | UART0 |
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| PLIC | 支持 | - |
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| CLIC | 支持 | - |
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## 3. Condition
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## 5. 联系人信息
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维护人：[bernard][1]
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[1]: https://github.com/BernardXiong
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| Driver | Condition | Remark |
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| ------ | --------- | ------ |
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| UART | Support | UART0 |
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| PLIC | Support | - |
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| CLIC | Support | - |
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@ -0,0 +1,138 @@
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# QEMU/RISCV64 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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RISC-V是一种开放和免费的指令集体系结构(ISA)。本工程是在QEMU的RISCV64 VIRT版本上进行的一份移植。
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## 2. 编译说明
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首先可以下载交叉编译工具链,建议采用sifive的工具链进行编译。
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```
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https://www.sifive.com/software
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```
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选择对应的平台即可。
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这里推荐在Ubuntu上进行开发工作。
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解压工具链到指定的目录。
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```
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export RTT_EXEC_PATH=~/gcc/bin
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```
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进入到`rt-thread/bsp/qemu-riscv-virt64`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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本工程提供了riscv64的两种可配置运行模式,默认运行在M-Mode下。
|
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*M-Mode*
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首先安装`qemu-system-riscv64`。
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```
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sudo apt install qemu-system-misc
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```
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直接输入
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```
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./qemu-nographic.sh
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```
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可以看到程序运行
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```
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heap: [0x80035804 - 0x86435804]
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.4 build May 21 2021
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2006 - 2021 Copyright by rt-thread team
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Hello RISC-V!
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msh />
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```
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*S-Mode*
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如果运行在S-Mode下，那么需要通过menuconfig选择配置
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```
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scons --menuconfig
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```
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选择如下：
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```
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RISCV qemu virt64 configs --->
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[*] RT-Thread run in riscv smode
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```
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保存后，重新`scons`编译即可。
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要让rt-thread运行在S-Mode，首先需要启动opensbi,然后通过opensbi启动rt-thread。
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自行编译的qemu或者下载的高版本的qemu内置opensbi，执行`./qemu-nographic-smode.sh`即可正常运行。
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通过`sudo apt install qemu-system-misc`安装的qemu版本较低，可自行编译opensbi。
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```
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git clone git@github.com:riscv/opensbi.git
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cd opensbi
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make PLATFORM=generic CROSS_COMPILE=~/gcc/bin/riscv64-unknown-elf-
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```
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最后生成的`/build/platform/generic/firmware/fw_jump.elf`则是需要的文件。
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输入以下的命令即可运行:
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```
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qemu-system-riscv64 -nographic -machine virt -m 256M -kernel rtthread.bin -bios ~/opensbi/build/platform/generic/firmware/fw_jump.elf
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```
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可以看到如下的结果
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```
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OpenSBI v0.9
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____ _____ ____ _____
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/ __ \ / ____| _ \_ _|
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| | | |_ __ ___ _ __ | (___ | |_) || |
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| | | | '_ \ / _ \ '_ \ \___ \| _ < | |
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| |__| | |_) | __/ | | |____) | |_) || |_
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\____/| .__/ \___|_| |_|_____/|____/_____|
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Platform Name : riscv-virtio,qemu
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Platform Features : timer,mfdeleg
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.
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.
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.
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Boot HART ISA : rv64imafdcsu
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Boot HART Features : scounteren,mcounteren
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Boot HART PMP Count : 16
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Boot HART PMP Granularity : 4
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Boot HART PMP Address Bits: 54
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Boot HART MHPM Count : 0
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Boot HART MHPM Count : 0
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Boot HART MIDELEG : 0x0000000000000222
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Boot HART MEDELEG : 0x000000000000b109
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heap: [0x80235a58 - 0x86635a58]
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.4 build May 21 2021
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2006 - 2021 Copyright by rt-thread team
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Hello RISC-V!
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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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| UART | 支持 | UART0 |
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| PLIC | 支持 | - |
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| CLIC | 支持 | - |
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## 5. 联系人信息
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维护人：[bernard][1]
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[1]: https://github.com/BernardXiong
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