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@@ -32,9 +32,26 @@ QEMU/VExpress A9是QEMU模拟器针对ARM VExpress-A9 FPGA开发板进行软件
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如果在Linux下使用,请自行下载[GNU GCC工具链][3]。
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-## 3. 执行
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+## 3. 执行和退出
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-当要执行编译好的RT-Thread时,在这个bsp目录下已经提供了运行脚本文件:qemu.bat和qemu.sh。可以在bsp目录下运行env,在env中敲入qemu.bat即可直接运行。
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+### 3.1 执行脚本文件说明
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+
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+在这个bsp目录下已经提供了下面几个执行脚本文件,具体的说明如下表所示:
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+
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+| 执行脚本文件 | 运行平台 | 备注 |
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+| ------ | ---- | :------: |
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+| qemu.bat | Windows | 普通模式启动运行 |
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+| qemu.sh | Linux | 同上 |
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+| qemu-dbg.bat | Windows | 调试模式启动运行 |
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+| qemu-dbg.sh | Linux | 同上 |
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+| qemu-nographic.bat | Windows | 以不带界面的模式启动运行 |
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+| qemu-nographic.sh | Linux | 同上 |
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+
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+### 3.2 Windows下执行RT-Thread
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+
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+#### 3.2.1 启动QEMU运行
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+
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+当要执行编译好的RT-Thread时,可以在bsp目录下运行env,在env中敲入qemu.bat即可直接运行。
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这个执行脚本默认把串口输出到stdio(即控制台)上,所以直接执行脚本后就可以输出结果了。
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@@ -49,6 +66,126 @@ hello rt-thread
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msh />
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```
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+当然你也可以尝试使用其他两个**.bat**文件启动运行。
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+
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+#### 3.2.2 退出QEMU运行
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+
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+在msh提示输入的状态下,按下 **CTRL+C** ,有以下提示之后,按下 **y** ,即可退出 QEMU 。
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+
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+```shell
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+hello rt-thread
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+msh />
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+msh />
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+msh />Terminate batch job (Y/N)? y
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+```
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+
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+### 3.3 Linux下执行RT-Thread
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+
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+#### 3.3.1 安装QEMU工具包
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+
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+在Linux下调试启动与Windows下稍微有点点区别,由于Windows下安装了**env**工具就自带了**qemu-system-arm**,而Linux下默认是没有这个工具的,所以执行执行`./qemu.sh`会报错:
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+
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+```shell
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+bsp/qemu-vexpress-a9$ ./qemu-nographic.sh
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+./qemu-nographic.sh: line 5: /usr/bin/qemu-system-arm: No such file or directory
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+```
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+
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+这个时候需要在Linux平台安装**qemu-system-arm**工具包,以**Linux Ubuntu**平台为例,使用以下命令即可安装对应的工具包:
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+
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+```shell
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+bsp/qemu-vexpress-a9$ sudo apt-get install qemu-system-arm
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+Reading package lists... Done
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+Building dependency tree
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+Reading state information... Done
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+The following package was automatically installed and is no longer required:
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+ tinyproxy-bin
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+Use 'sudo apt autoremove' to remove it.
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+Suggested packages:
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+ vde2
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+The following NEW packages will be installed:
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+ qemu-system-arm
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+0 upgraded, 1 newly installed, 0 to remove and 168 not upgraded.
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+Need to get 0 B/7,722 kB of archives.
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+After this operation, 36.6 MB of additional disk space will be used.
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+Selecting previously unselected package qemu-system-arm.
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+(Reading database ... 159586 files and directories currently installed.)
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+Preparing to unpack .../qemu-system-arm_1%3a4.2-3ubuntu6.17_amd64.deb ...
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+Unpacking qemu-system-arm (1:4.2-3ubuntu6.17) ...
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+Setting up qemu-system-arm (1:4.2-3ubuntu6.17) ...
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+Processing triggers for man-db (2.9.1-1) ...
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+```
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+
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+提示安装成功后,输入查看**qemu-system-arm**版本信息的命令,如果可以看到对应的版本信息,证明它可以正常使用。
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+
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+```shell
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+/bsp/qemu-vexpress-a9$ qemu-system-arm --version
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+QEMU emulator version 4.2.1 (Debian 1:4.2-3ubuntu6.17)
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+Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
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+```
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+
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+#### 3.3.2 启动QEMU运行
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+
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+由于Linux平台一般都是不带界面的服务器,所以推荐使用`qemu-nographic.sh`脚本来启动运行,参考运行示例如下:
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+
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+```shell
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+bsp/qemu-vexpress-a9$ ./qemu-nographic.sh
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+WARNING: Image format was not specified for 'sd.bin' and probing guessed raw.
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+ Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
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+ Specify the 'raw' format explicitly to remove the restrictions.
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+ALSA lib confmisc.c:767:(parse_card) cannot find card '0'
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
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+ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
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+ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
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+ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: No such file or directory
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+ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM default
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+alsa: Could not initialize DAC
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+alsa: Failed to open `default':
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+alsa: Reason: No such file or directory
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+ALSA lib confmisc.c:767:(parse_card) cannot find card '0'
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
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+ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
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+ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name
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+ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
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+ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: No such file or directory
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+ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM default
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+alsa: Could not initialize DAC
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+alsa: Failed to open `default':
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+alsa: Reason: No such file or directory
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+audio: Failed to create voice `lm4549.out'
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+
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+ \ | /
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+- RT - Thread Operating System
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+ / | \ 4.1.0 build Nov 24 2021 19:49:17
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+ 2006 - 2021 Copyright by rt-thread team
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+lwIP-2.1.2 initialized!
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+[I/sal.skt] Socket Abstraction Layer initialize success.
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+[I/SDIO] SD card capacity 65536 KB.
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+[I/SDIO] switching card to high speed failed!
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+[W/POSIX.delay] Please consider implementing rt_hw_us_delay() in another file.
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+[W/POSIX.delay] Please consider implementing rt_hw_us_delay() in another file.
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+[W/POSIX.delay] Please consider implementing rt_hw_us_delay() in another file.
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+hello rt-thread
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+msh />
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+msh />
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+msh />
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+```
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+
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+**注意**: 前面的错误信息可以忽略,能看到RT-Thread的启动logo输出,以及msh能正常输入输出,即可进行代码调试了。
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+
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+#### 3.3.3 退出QEMU运行
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+
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+Linux下退出QEMU的方式与Windows下有些不一样;在msh提示输入的状态下,按下 **CTRL+A** ,再按下 **X** ,即可退出 QEMU 。
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+
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+```shell
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+hello rt-thread
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+msh />
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+msh />
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+msh />QEMU: Terminated
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+```
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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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@@ -97,9 +234,11 @@ start qemu-system-arm -M vexpress-a9 -kernel rtthread.elf -serial stdio -sd sd.b
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## 5. 联系人信息
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-维护人:[bernard][4]
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+维护人:[bernard][4] [recan-li][5]
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[1]: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.boards.express/index.html
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[2]: https://www.rt-thread.org/page/download.html
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[3]: https://launchpad.net/gcc-arm-embedded/5.0/5-2016-q3-update/+download/gcc-arm-none-eabi-5_4-2016q3-20160926-linux.tar.bz2
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-[4]: https://github.com/BernardXiong
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+[4]: https://github.com/BernardXiong
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+[5]: https://github.com/recan-li
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+
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