UEFI Shell命令详解，自写一个UEFI Shell命令

首先，我们从BIOS进入Shell，输入help命令查看帮助信息

Shell：help

acpiview      - Display ACPI Table information.
alias         - Displays, creates, or deletes UEFI Shell aliases.
attrib        - Displays or modifies the attributes of files or directories.
bcfg          - Manages the boot and driver options that are stored in NVRAM.
cd            - Displays or changes the current directory.
cls           - Clears the console output and optionally changes the background and foreground color.
comp          - Compares the contents of two files on a byte-for-byte basis.
connect       - Binds a driver to a specific device and starts the driver.
cp            - Copies one or more files or directories to another location.
date          - Displays and sets the current date for the system.
dblk          - Displays one or more blocks from a block device.
devices       - Displays the list of devices managed by UEFI drivers.
devtree       - Displays the UEFI Driver Model compliant device tree.
dh            - Displays the device handles in the UEFI environment.
disconnect    - Disconnects one or more drivers from the specified devices.
dmem          - Displays the contents of system or device memory.
dmpstore      - Manages all UEFI variables.
drivers       - Displays the UEFI driver list.
drvcfg        - Invokes the driver configuration.
drvdiag       - Invokes the Driver Diagnostics Protocol.
dumpfdt       - Dump current Flat Device Tree (FDT)
echo          - Controls script file command echoing or displays a message.
edit          - Provides a full screen text editor for ASCII or UCS-2 files.
eficompress   - Compresses a file using UEFI Compression Algorithm.
efidecompress - Decompresses a file using UEFI Decompression Algorithm.
else          - Identifies the code executed when 'if' is FALSE.
endfor        - Ends a 'for' loop.
endif         - Ends the block of a script controlled by an 'if' statement.
exit          - Exits the UEFI Shell or the current script.
for           - Starts a loop based on 'for' syntax.
getmtc        - Gets the MTC from BootServices and displays it.
goto          - Moves around the point of execution in a script.
help          - Displays the UEFI Shell command list or verbose command help.
hexedit       - Provides a full screen hex editor for files, block devices, or memory.
if            - Executes commands in specified conditions.
ifconfig      - Modifies the default IP address of the UEFI IPv4 Network Stack.
load          - Loads a UEFI driver into memory.
loadpcirom    - Loads a PCI Option ROM.
ls            - Lists the contents of a directory or file information.
map           - Displays or defines file system mappings.
memmap        - Displays the memory map maintained by the UEFI environment.
mkdir         - Creates one or more new directories.
mm            - Displays or modifies MEM/MMIO/IO/PCI/PCIE address space.
mode          - Displays or changes the console output device mode.
mv            - Moves one or more files to a destination within or between file systems.
openinfo      - Displays the protocols and agents associated with a handle.
parse         - Retrieves a value from a standard format output file.
pause         - Pauses a script and waits for an operator to press a key.
pci           - Displays PCI device list or PCI function configuration space and PCIe extended
configuration space.
ping          - Ping the target host with an IPv4 stack.
reconnect     - Reconnects drivers to the specific device.
reset         - Resets the system.
rm            - Deletes one or more files or directories.
sermode       - Sets serial port attributes.
set           - Displays or modifies UEFI Shell environment variables.
setfdt        - Define and/or re-install a Flat Device Tree (FDT)
setsize       - Adjusts the size of a file.
setvar        - Displays or modifies a UEFI variable.
shift         - Shifts in-script parameter positions.
smbiosview    - Displays SMBIOS information.
stall         - Stalls the operation for a specified number of microseconds.
tftp          - Download a file from TFTP server.
time          - Displays or sets the current time for the system.
timezone      - Displays or sets time zone information.
touch         - Updates the filename timestamp with the current system date and time.
type          - Sends the contents of a file to the standard output device.
unload        - Unloads a driver image that was already loaded.
ver           - Displays UEFI Firmware version information.
vol           - Displays or modifies information about a disk volume.

Help usage:help [cmd|pattern|special] [-usage] [-verbose] [-section name][-b]

中文释义

命令	功能	命令	功能
acpiview	显示ACPI表相关信息	ifconfig	配置IP地址
alias	显示，创建，删除别名	load	加载UEFI驱动
attrib	显示，更改文件或目录属性	loadpcirom	加载PCI ROM
bcfg	管理启动项	ls	列出目录内容或文件信息
cd	更改当前目录	map	显示Mapping
cls	清空标准输出	memmap	显示目录映射
comp	比较两个文件	mkdir	创建目录
connect	将driver绑定到指定的设备并启动driver	mm	列出或修改MEM/MMIO/IO/PCI/PCIE地址空间
cp	将文件或文件夹复制到另一个位置	mode	列出或修改输出设备的模式
date	显示或设置日期	mv	移动文件或目录
dblk	显示块设备里的块	openinfo	显示Protocols打开信息
devices	列出所有设备	parse	从标准格式输出文件检索值
devtree	显示设备树	pause	暂停执行脚本，等待用户输入
dh	显示设备句柄	pci	显示PCI设备
disconnect	从指定设备卸载驱动	ping	ping
dmem	显示系统或设备内存的内容	reconnect	重新连接驱动与设备
dmpstore	管理UEFI NVRAM变量	reset	重启系统
drivers	显示设备驱动	rm	删除文件或目录
drvcfg	配置驱动	sermode	设置串口属性
drvdiag	调动Driver Disgnostis Protocol	set	显示或修改Shell中的环境变量
dumpfdt	调用驱动程序配置	setfdt	定义和/或重新安装平面设备树(FDT)
echo	回显	setsize	调整文件大小
edit	编辑ASCII或UCS-2文件	setvar	设置UEFI变量
eficompress	压缩文件	shift	移动脚本内参数的位置
efidecompress	解压文件	smbiosview	显示SMBIOS信息
else	标识当’if’为FALSE时执行的代码	stall	在指定的时间内暂停执行
endfor	结束“for”循环	tftp	从TFTP服务器下载文件
endif	结束由’if’语句控制的脚本块	time	显示/设置时区
exit	退出Shell或脚本	timezone	显示/设置时区
for	开始一个“for”循环	touch	更新文件时间设置
getmtc	从BootServices获取MTC并显示它	type	显示文件类型
goto	在脚本的执行点周围移动	unload	卸载驱动
help	显示帮助信息	ver	显示UEFI固件版本信息
hexedit	二进制编辑器，可编辑文件，块设备或内存	vol	显示/设置卷标
if	开始一个“if”语句

Shell命令通用选项

命令行参数	作用
-b，-break	输出信息分屏显示
-q，-quit	不输出任何信息
-sfo	用标准格式输出
-t，-terse	用简洁格式输出信息
-v，-verbose	输出辅助信息
-？	输出帮助信息

自己写一个UEFI Shell 命令（基于开源EDK2代码）

…待补充