fix(test-kernel): remove incompatible commands

Makefile.toml

@@ -30,10 +30,10 @@ dependencies = ["test-kernel-build"]
 [tasks.test-kernel-itb]
 script = '''
 cp test-kernel/scripts/rustsbi-test-kernel.its target/riscv64imac-unknown-none-elf/release
-pushd target/riscv64imac-unknown-none-elf/release/
+cd target/riscv64imac-unknown-none-elf/release/
 mkimage -f rustsbi-test-kernel.its  rustsbi-test-kernel.itb
 rm rustsbi-test-kernel.its
-popd
+cd ../../../
 '''
 dependencies = ["prototyper", "test-kernel"]
 

docs/booting-test-kernel-in-qemu-using-uboot-spl-and-rustsbi.md

@@ -20,19 +20,19 @@
 
 ## 环境配置
 
-### 安装交叉编译器和QEMU
+### 安装交叉编译器、QEMU和相关依赖
 
 For Arhc Linux:
 
 ``` shell
-$ sudo pacman -S git riscv64-linux-gnu-gcc qemu-system-riscv
+$ sudo pacman -S git riscv64-linux-gnu-gcc qemu-system-riscv uboot-tools
 ```
 
 For Ubuntu:
 
 ``` shell
 $ sudo apt-get update && sudo apt-get upgrade
-$ sudo apt-get install git qemu-system-misc gcc-riscv64-linux-gnu 
+$ sudo apt-get install git qemu-system-misc gcc-riscv64-linux-gnu u-boot-tools
 ```
 
 #### 测试是否成功安装