[bsp/juicevm] ADD README.md
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# JuiceVm 虚拟机 BSP 说明
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标签： Risc-V 64bit ima、JuiceVm
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---
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## 简介
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本文档为 JuiceVm 开发团队为 JuiceVm 虚拟机提供的 BSP (板级支持包) 说明。
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主要内容如下：
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- 开发板资源介绍
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- BSP 快速上手
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- 进阶使用方法
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通过阅读快速上手章节开发者可以快速地上手该 BSP，将 RT-Thread 运行在开发板上。在进阶使用指南章节，将会介绍更多高级功能，帮助开发者利用 RT-Thread 驱动更多板载资源。
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## 虚拟机介绍
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JuiceVm 虚拟机是 juice 开发的一款 Risc-V 64bit ima 虚拟机，Risc-V 64bit 虚拟机界面如下图所示：
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该虚拟机常用**资源**如下：
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- MCU：Risc-V 64bit ima，300MB RAM，支持M-MODE,S-MODE,
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- 常用外设
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- UART0
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- 常用接口：UART
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- 调试接口: 标准 GDB 【TODO】
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更多详细信息请参考【Juice】[JuiceVm 虚拟机](https://whycan.com/t_5844.html)。
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## 外设支持
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本 BSP 目前对外设的支持情况如下：
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|**片上外设** |**支持情况**|**备注** |
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| :----------------- | :----------: | :-----------------------------------|
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| GPIO | 暂不支持 | 即将支持 |
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| MMU(SV39) | 暂不支持 | 即将支持 |
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| UART | 支持 | UART0 |
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| SDIO | 暂不支持 | 即将支持 |
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| RTC | 暂不支持 | 即将支持 |
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| PWM | 暂不支持 | 即将支持 |
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| USB Device | 暂不支持 | 即将支持 |
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| USB Host | 暂不支持 | 即将支持 |
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## 使用说明
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使用说明分为如下两个章节：
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- 快速上手
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本章节是为刚接触 RT-Thread 的新手准备的使用说明，遵循简单的步骤即可将 RT-Thread 操作系统运行在该开发板上，看到实验效果 。
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- 进阶使用
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本章节是为需要在 RT-Thread 操作系统上使用更多开发板资源的开发者准备的。通过使用 ENV 工具对 BSP 进行配置，可以开启更多板载资源，实现更多高级功能。
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### 快速上手
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本 BSP 为开发者提供 GCC 开发环境。下面以 GCC 开发环境为例，介绍如何将系统运行起来。
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#### 编译下载
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##### toolchain 下载
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- 到 xpack-dev-tools 下载 [点击跳转](https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/tag/v8.3.0-2.1)
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```
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wget https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/download/v8.3.0-2.1/xpack-riscv-none-embed-gcc-8.3.0-2.1-linux-x64.tar.gz
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```
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- 解压到/opt目录下
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```
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tar vxf xpack-riscv-none-embed-gcc-8.3.0-2.1-linux-x64.tar.gz -C /opt
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```
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- 到rt-thread/bsp/juicevm目录下执行
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```
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scons
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```
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- 下载 JuiceVm
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浏览器打开：
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https://whycan.com/files/members/1390/juice_vm_release_for_Linux_57ba985a.zip
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- 运行固件
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./juice_vm_for_Linux.out -a -g ./rtthread.bin
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#### 运行结果
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在console可以看到 RT-Thread 的输出信息:
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```c
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global_vm_log_init output_mode_sel: 0 JUICE_VM_LOG_MAX_NUM:600
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gg ,ggg, gg ,a8a, ,gggg, ,ggggggg, ,ggg, ,g,ggg, ,ggg,_,ggg,
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dP8dP Y8a 88 ,8 8, ,88 Y8b,dP Y8dP Y8a ,8dP Y8dP Y88P Y8b
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dP YYb, `88 88 d8 8b d8 `Yd8' a YYb, `88 d8Yb, `88' `88' `88
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,8 `8` 88 88 88 88d8' 8b d88 Y8P'` 88 88 ` 88 88 88
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I8 Yb 88 88 88 8,8I Y88P`8baaaa 88 88 88 88 88
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`8b, `8, 88 88 Y8 8I8' ,d8P I8 8I 88 88 88
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` Y88888 88 88 `8, ,8d8 d8 `8, ,8' 88 88 88
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Y8 88 888888 8,8 Y8, Y8, Y8, ,8P 88 88 88
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,88,Y8b,____,d88`8b, ,d8b,`Yba,,_____`Yba,,_____, Yb,_,dP 88 88 Y8,
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,ad88888 Y888888P Y8 Y88P Y8 ` Y8888888 ` Y8888888 Y8P 88 88 `Y8
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,dP ' Yb
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,8' I8
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,8' I8
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I8, ,8'
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`Y8,___,d8'
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Y888P
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email: juicemail@163.com
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version:57ba985a 57ba985a Fri, 23 Apr 2021 17:22:20 +0800 xiaoxiaohuixxh feat(Rt-thread): uart port pass
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firm_addr:./rtthread.bin
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fd = 3
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file_size = 44872
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interrupt_vertor_register_mag_init
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rv_csr_register_init
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csr_addr_misa 8000000000040101
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csr_addr_mvendorid 0000000000000000
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csr_addr_marchid 0000000000000000
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csr_addr_mimpid 0000000000000000
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csr_addr_mhartid 0000000000000000
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rv_peripheral_device_init
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[rv64_sim][dev][mmu]rv.c(5593):rv_peripheral_device_mmu_init,Sv39 mode support only
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[rv64_sim][dev][mtime]rv.c(5252):rv_peripheral_device_mtime_init
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[rv64_sim][dev][mtime]rv.c(5271):pdev_mtime_irq_info 0x7f334d2d0910 92c00003 92c00007
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[rv64_sim][dev][mtime]rv.c(5277):pdev_mtime_irq_info_smode 0x7f334d2d0900 92c00003 92c00007
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[rv64_sim][dev][uart0]rv.c(5061):rv_peripheral_device_uart0_init
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[rv64_sim][dev][uart0]rv.c(5077):pdev_uart0_irq_info 0x7f334d2d08f0
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rv sim start...loading
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cpu run...
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heap: [0x8000cb60 - 0x92c00000]
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.3 build Apr 26 2021
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2006 - 2021 Copyright by rt-thread team
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Hello RT-Thread!
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msh >
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```
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### 进阶使用
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此 BSP 默认只开启了 UART0 的功能和直接运行功能
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如果需使用更多功能，可以执行
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```
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./juice_vm_for_Linux.out
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```
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查看相关帮助信息开启调试和实时汇编输出功能
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## 注意事项
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编译参数请使用rv64ima,暂不支持Risc-V的c模块
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## 维护人信息
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- [Juice](https://github.com/xiaoxiaohuixxh)
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- [邮箱](juicemail@163.com)
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## 参考资料
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* [RT-Thread 文档中心](https://www.rt-thread.org/document/site/)
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* [JuiceVm 虚拟机更新发布页](https://whycan.com/t_5844.html)
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@ -15,7 +15,7 @@ if os.getenv('RTT_CC'):
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if CROSS_TOOL == 'gcc':
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PLATFORM = 'gcc'
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EXEC_PATH = r'/opt/riscv64-unknown-elf-gcc-8.3.0-2020.04.0-x86_64-linux-ubuntu14/bin'
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EXEC_PATH = r'/opt/xpack-riscv-none-embed-gcc-8.3.0-2.1/bin'
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else:
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print('Please make sure your toolchains is GNU GCC!')
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exit(0)
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@ -27,7 +27,7 @@ BUILD = 'debug'
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if PLATFORM == 'gcc':
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# toolchains
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PREFIX = 'riscv64-unknown-elf-'
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PREFIX = 'riscv-none-embed-'
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CC = PREFIX + 'gcc'
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CXX = PREFIX + 'g++'
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AS = PREFIX + 'gcc'
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