STM32 virtualization environment of QEMU

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Preface

Close to the year ,2021 The new year is once again affected by the new crown and can't go home well . Because the work needs to know a little ARM Knowledge of assembly , So I decided to study . The first thing I want to do is to have a learning environment , It's not worth buying a development board , So I hope it can be used qemu Build a virtual environment to help your learning enthusiasm .

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One 、qemu What is it?

qeme It's a virtual machine , Self supporting many architectures cpu, Anyway, it's an open source and powerful thing . For details, please refer to the instructions on the official website , In most cases, this thing is used to run embedded linux Systematic . I feel that theoretically, one can also be simulated stm32 Development board , Generally, these things are github In the upper probability, someone will have done it , Go up and look for it . I didn't expect to find https://github.com/beckus/qemu_stm32

Two 、 Do as you say

1. Environment description and source code construction

Before you start, you need to install linux Your computer or linux Virtual machines can also , My notebook itself is ubuntu System , Because I used to do embedded linux The developed cross compilers also have , So the environment is still perfect , So start straight .

Access to the source code ：

git clone git://github.com/beckus/qemu_stm32.git

To configure ：

./configure --enable-debug --disable-werror --target-list="arm-softmmu"

This step requires many libraries , Just install whatever library you lack . There is no –disable-werror This parameter , I will report an error when compiling, but I can't compile , Just add this entry .
Compile and install ：

make && make install

Installation may require root jurisdiction , You can choose the following command ：

sudo make install

2. function Demo

The source code author provides Demo, Download it and you can compile and run it directly .

git clone git://github.com/beckus/stm32_p103_demos.git
cd stm32_p103_demos
./configure
make

Compilation requires a cross compiler , This has been done. arm linux Students of development should be familiar with , Compiler name is arm-none-eabi-gcc, If there is no installation, you can directly execute the command installation ：

sudo apt-get install arm-none-eabi-gcc

After compilation , At every demo There will be a... Under the folder main.bin file , We can run , Then test our learning environment ;

cd /stm32_p103_demos/demos/qemu_test
qemu-system-arm -M stm32-p103 -kernel main.bin

The successful running ！！！

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summary

Here we are , There should be no problem with the environment , But how to write a program and run it needs further research , Next, I plan to study demo Source code and Makefile To implement your own program , Then further study qemu Source code stm32 Part of the source code , Interested partners are welcome to study and discuss .