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+# 使用RustSBI & U-Boot SPL在QEMU中启动Test Kernel
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+
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+本教程给出了使用RustSBI和U-Boot在QEMU中启动Test Kernel的基本流程。
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+
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+其中启动流程分为两种类型：
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+1. 只使用U-Boot SPL的启动流程
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+2. 同时使用U-Boot SPL和U-Boot的启动流程。
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+
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+请读者在其主机上安装必要的软件来尝试本教程的脚本。本教程是在Arch Linux上开发的。
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+
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+[环境配置](#环境配置)小节给出了本教程的环境配置方法，用户在使用本教程时需要先完成环境配置小节内容。
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+
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+[使用U-Boot SPL启动Test Kerenl](#使用U-Boot-SPL启动Test-Kerenl)小节给出了只使用U-Boot SPL的启动流程。
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+
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+[使用U-Boot SPL和U-Boot启动Test Kerenl](#使用U-Boot-SPL和U-Boot启动Test-Kerenl)小节给出了同时使用U-Boot SPL和U-Boot的启动流程。
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+
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+本教程使用软件版本如下：
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+
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+| 软件 | 版本 |
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+| :-------------------: | :-----: |
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+| riscv64-linux-gnu-gcc | 14.1.0 |
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+| qemu-system-riscv64 | 9.0.1 |
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+| RustSBI Prototyper | 0.0.0 |
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+| U-Boot | 2024.04 |
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+| Linux Kernel | 6.2 |
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+| busybox | 1.36.0 |
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+
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+## 环境配置
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+
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+### 安装交叉编译器、QEMU和相关依赖
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+
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+For Arhc Linux:
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+
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+``` shell
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+$ sudo pacman -S git riscv64-linux-gnu-gcc qemu-system-riscv uboot-tools
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+```
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+
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+For Ubuntu:
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+
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+``` shell
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+$ sudo apt-get update && sudo apt-get upgrade
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+$ sudo apt-get install git qemu-system-misc gcc-riscv64-linux-gnu u-boot-tools
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+```
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+
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+#### 测试是否成功安装
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+
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+For riscv64-linux-gnu-gcc:
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+
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+``` shell
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+$ riscv64-linux-gnu-gcc --version
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+```
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+
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+它将输出以下版本信息
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+
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+```
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+riscv64-linux-gnu-gcc (GCC) 14.1.0
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+Copyright (C) 2024 Free Software Foundation, Inc.
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+This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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+```
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+
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+For QEMU:
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+
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+``` shell
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+$ qemu-system-riscv64 --version
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+```
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+
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+它将输出以下版本信息
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+
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+```
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+QEMU emulator version 9.0.1
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+Copyright (c) 2003-2024 Fabrice Bellard and the QEMU Project developers
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+```
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+
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+### 准备RustSBI Prototyper, Test Kernel, U-Boot源码
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+
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+创建工作目录并进入该目录
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+
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+``` shell
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+$ mkdir workshop && cd workshop
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+```
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+
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+Clone RustSBI Prototyper
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+
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+``` shell
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+$ git clone https://github.com/rustsbi/prototyper.git && cd prototyper && git checkout main && cd ..
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+```
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+
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+Clone U-Boot
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+
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+``` shell
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+$ git clone https://github.com/u-boot/u-boot.git && cd u-boot && git checkout v2024.04 && cd ..
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+```
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+
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+## 使用U-Boot SPL启动Test Kerenl
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+### 编译RustSBI Prototyper和Test Kernel
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+
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+进入prototyper目录
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+
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+``` shell
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+$ cd prototyper
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+```
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+
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+编译RustSBI Prototyper和Test Kernel
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+
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+``` shell
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+$ cargo make test-kernel-itb
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+```
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+
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+本小节将使用二进制文件 `./target/riscv64imac-unknown-none-elf/release/rustsbi-test-kernel.itb`。
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+
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+### 编译U-Boot SPL
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+
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+进入U-Boot目录
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+
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+``` shell
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+$ cd u-boot
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+```
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+
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+导出环境变量
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+
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+``` shell
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+$ export ARCH=riscv
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+$ export CROSS_COMPILE=riscv64-linux-gnu-
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+$ export OPENSBI=../prototyper/target/riscv64imac-unknown-none-elf/release/rustsbi-prototyper.bin
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+```
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+
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+生成`.config`文件
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+
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+``` shell
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+# To generate .config file out of board configuration file
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+$ make qemu-riscv64_spl_defconfig
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+# add bootcmd value
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+$ make menuconfig
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+```
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+
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+编译U-Boot
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+
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+``` shell
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+# To build U-Boot
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+$ make -j$(nproc)
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+```
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+
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+本小节将使用二进制文件 `./spl/u-boot-spl`。
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+
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+### 使用RustSBI原型系统和U-Boot启动Linux Kernel
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+
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+进入`workshop`目录
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+
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+``` shell
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+$ cd workshop
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+```
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+
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+运行下面命令
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+
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+``` shell
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+$ qemu-system-riscv64 -M virt -smp 1 -m 256M -nographic \
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+ -bios ./u-boot/spl/u-boot-spl \
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+ -device loader,file=./prototyper/target/riscv64imac-unknown-none-elf/release/rustsbi-test-kernel.itb,addr=0x80200000
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+```
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+
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+## 使用U-Boot SPL和U-Boot启动Test Kerenl
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+### 编译RustSBI Prototyper和Test Kernel
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+
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+进入prototyper目录
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+
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+``` shell
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+$ cd prototyper
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+```
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+
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+编译RustSBI Prototyper和Test Kernel
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+
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+``` shell
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+$ cargo make prototyper
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+$ cargo make test-kernel
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+```
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+本小节将使用二进制文件 `./target/riscv64imac-unknown-none-elf/release/rustsbi-prototyper.bin`和`./target/riscv64imac-unknown-none-elf/release/rustsbi-test-kernel.bin`。
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+
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+### 编译U-Boot SPL
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+
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+进入U-Boot目录
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+
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+``` shell
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+$ cd u-boot
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+```
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+
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+导出环境变量
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+
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+``` shell
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+$ export ARCH=riscv
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+$ export CROSS_COMPILE=riscv64-linux-gnu-
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+$ export OPENSBI=../prototyper/target/riscv64imac-unknown-none-elf/release/rustsbi-prototyper.bin
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+```
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+
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+生成`.config`文件
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+
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+``` shell
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+# To generate .config file out of board configuration file
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+$ make qemu-riscv64_spl_defconfig
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+# add bootcmd value
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+$ make menuconfig
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+```
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+
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+U-Boot 配置选项将加载到终端。导航到 `Boot options` $\rightarrow$ `bootcmd value` 并将以下内容写入 `bootcmd` 值：
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+
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+```
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+ext4load virtio 0:1 84000000 rustsbi-test-kernel.bin; booti 0x84000000 - ${fdtcontroladdr}
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+```
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+
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+编译U-Boot
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+
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+``` shell
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+# To build U-Boot
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+$ make -j$(nproc)
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+```
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+
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+本小节将使用二进制文件 `./spl/u-boot-spl`和`./u-boot.itb `。
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+
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+### 创建启动盘
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+在`workshop`目录运行以下命令来创建一个256 MB的磁盘镜像
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+
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+``` shell
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+# Create a 256 MB disk image
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+$ qemu-img create test-kernel.img 256m
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+```
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+
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+#### 创建分区
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+
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+将在磁盘映像`test-kernel.img`上创建1个分区，这个分区是可引导的。
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+
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+`parted`命令将用于在镜像`test-kernel.img`中创建分区。在镜像中创建分区表：
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+
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+``` shell
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+$ sudo parted test-kernel.img mklabel gpt
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+```
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+
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+现在`test-kernel.img`中有一个分区表。将`test-kernel.img`挂载为loop device，以便它可以用作块设备。将`test-kernel.img`挂载为块设备将允许在其中创建分区。
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+
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+``` shell
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+# Attach test-kernel.img with the first available loop device
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+$ sudo losetup --find --show test-kernel.img
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+```
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+
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+> - `find`：查找第一个未使用的loop device
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+> - `show`：显示`test-kernel.img`附加到的loop device的名称
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+
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+记下循环设备的完整路径。在本教程中它是`/dev/loop0`。对`/dev/loop0`的操作将会对`test-kernel.img`进行操作。
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+
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+对`/dev/loop0`分区
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+
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+``` shell
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+# Create a couple of primary partitions
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+$ sudo parted --align minimal /dev/loop0 mkpart primary ext4 0 100%
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+
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+$ sudo parted /dev/loop0 print
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+```
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+
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+#### 格式化分区
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+
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+通过以下命令查看分区：
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+
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+``` shell
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+$ ls -l /dev/loop0*
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+```
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+
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+在本教程中，分区为`/dev/loop0p1`。
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+
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+格式化分区并创建`ext4`文件系统，同时将分区设置为可引导分区。
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+
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+``` shell
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+$ sudo mkfs.ext4 /dev/loop0p1
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+
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+# Mark first partition as bootable
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+$ sudo parted /dev/loop0 set 1 boot on
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+```
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+
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+#### 将Linux Kernel和根文件系统拷贝进启动盘
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+
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+``` shell
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+# Mount the 1st partition
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+$ sudo mkdir test-kernel
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+$ sudo mount /dev/loop0p1 test-kernel
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+$ cd test-kernel
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+```
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+拷贝Linux Kernel镜像
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+``` shell
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+$ sudo cp ../prototyper/target/riscv64imac-unknown-none-elf/release/rustsbi-test-kernel.bin .
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+```
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+
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+卸载`test-kernel`
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+
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+``` shell
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+$ cd workshop
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+$ sudo umount test-kernel
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+```
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+
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+将`/dev/loop0`分离
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+
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+``` shell
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+$ sudo losetup -d /dev/loop0
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+```
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+
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+### 使用RustSBI 原型系统和U-Boot启动Linux Kernel
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+
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+进入`workshop`目录
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+
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+``` shell
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+$ cd workshop
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+```
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+
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+运行下面命令
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+
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+``` shell
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+$ qemu-system-riscv64 -M virt -smp 1 -m 256M -nographic \
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+ -bios ./u-boot/spl/u-boot-spl \
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+ -device loader,file=./u-boot/u-boot.itb,addr=0x80200000 \
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+ -blockdev driver=file,filename=./test-kernel.img,node-name=hd0 \
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+ -device virtio-blk-device,drive=hd0
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+```
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guttatus