docs(readme): 修复README的相关issue

close https://gitee.com/openharmony-sig/vendor_ohos/commit/09c6b014d5b09df631f274bb260057a8ba515d84#diff_note_5899727

Signed-off-by: SimonLi <likailong@huawei.com>

README.md

@@ -1,7 +1,5 @@
 # vendor_ohos
 
-[TOC]
-
 ## Introduction
 
 The repository is mainly developed by OpenHarmony community, rather than the
@@ -14,17 +12,58 @@ Graphic display product samples of virt platform supporting QEMU's ARMv7-a
 architecture, samples of virt platform supporting RISC-V architecture, and
 samples of Cortex-M4 architecture.
 
+code path:
+
+```
+device/qemu/                          --- device_qemu repository path
+├── arm_mps2_an386                    --- Cortex-M4 architecture MPS2-AN386 platform
+├── arm_virt                          --- ARMv7-a architecture virt platform
+├── drivers                           --- virt drivers
+└── riscv32_virt                      --- RISC-V architecture virt platform
+vendor/ohos/                          --- vendor_ohos repository path
+├── qemu_small_system_demo            --- small system default demo
+├── qemu_mini_system_demo             --- mini system default demo
+└── qemu_riscv_mini_system_demo       --- mini system demo with riscv architecture
+```
+
 ## Installation
 
 [QEMU Install Guide](https://gitee.com/openharmony/device_qemu/blob/master/README.md)
 
 ## Usage
 
+1. run command `hb set` to select the product target
 ```
-hb set
-hb build
+ohos
+ > qemu_small_system_demo
+   qemu_mini_system_demo
 ```
 
+`qemu_small_system_demo` indicates small system product demo, it contains
+system components, such as graphic, foundation, etc.
+
+`qemu_mini_system_demo` indicates mini system product demo, it contains
+system components, such as samgr, hilog, etc.
+
+2. run command `hb build` to start building。
+
+3. To run the image with qemu. In details,
+
+3.1 `qemu_small_system_demo` target,
+
+```
+./qemu-init
+./qemu-run
+```
+
+use `vnc-client` to connect the host's 5920 port.
+
+3.2 `qemu_mini_system_demo` target,
+
+```
+cd device/qemu/arm_mps2_an386
+./qemu_run.sh ../../../out/arm_mps2_an386/bin/liteos
+```
 ## Contribution
 
 [How to involve](https://gitee.com/openharmony/docs/blob/master/en/contribute/contribution.md)

README_zh.md

@@ -1,26 +1,68 @@
 # vendor_ohos
 
-[TOC]
-
 ## 介绍
 
-该仓库下主要用作OpenHarmony社区开发的，而非某个厂商单独开发的典型产品样例代码
-托管，主要包括类似QEMU的图形、软总线等特性产品的开发。
+该仓库托管OpenHarmony社区开发的，而非某个厂商单独开发的典型产品样例代码，主要
+包括类似QEMU(Quick Emulator)的图形、软总线等特性产品的开发。
 
 ## 软件架构
 
 支持QEMU的ARMv7-a架构的virt平台的图形显示产品样例，支持RISC-V架构的virt平台的
 样例，以及Cortex-M4架构的样例。
 
+代码路径：
+
+```
+device/qemu/                          --- device_qemu 仓库路径
+├── arm_mps2_an386                    --- Cortex-M4 架构的 MPS2-AN386 单板模拟
+├── arm_virt                          --- ARMv7-a 架构的 virt 单板模拟
+├── drivers                           --- virt驱动目录
+└── riscv32_virt                      --- RISC-V 架构的 virt 单板模拟
+vendor/ohos/                          --- vendor_ohos 仓库路径
+├── qemu_small_system_demo            --- 小型系统的样例
+├── qemu_mini_system_demo             --- 微型系统的样例
+└── qemu_riscv_mini_system_demo       --- 微型系统的 RISC-V 架构的样例
+```
+
 ## 安装教程
 
 [QEMU的安装参考链接](https://gitee.com/openharmony/device_qemu#qemu%E5%AE%89%E8%A3%85)
 
 ## 使用说明
 
+1. 运行`hb set`命令选择对应的产品样例。
 ```
-hb set
-hb build
+ohos
+ > qemu_small_system_demo
+   qemu_mini_system_demo
+```
+
+其中，
+
+`qemu_small_system_demo`表示小型系统的样例，它会集成OpenHarmony上层组件，例如：
+graphic、foundation等。
+
+`qemu_mini_system_demo`表示微型系统的样例，它会集成OpenHarmony上层组件，例如：
+samgr、hilog等。
+
+2. 运行`hb build`进行编译。
+
+3. 将编译出的镜像基于qemu来运行，方法如下：
+
+3.1 `qemu_small_system_demo`的运行方法是
+
+```
+./qemu-init
+./qemu-run
+```
+
+再用`vnc-client`连接该主机的5920端口
+
+3.2 `qemu_mini_system_demo`的运行方法是
+
+```
+cd device/qemu/arm_mps2_an386
+./qemu_run.sh ../../../out/arm_mps2_an386/bin/liteos
 ```
 
 ## 贡献