commands help on xilinx-zynqMP(2022.1)

? - alias for ‘help’
base - print or set address offset
bdinfo - print Board Info structure
bind - Bind a device to a driver
blkcache - block cache diagnostics and control
bmp - manipulate BMP image data
boot - boot default, i.e., run ‘bootcmd’
bootd - boot default, i.e., run ‘bootcmd’
bootefi - Boots an EFI payload from memory
bootelf - Boot from an ELF image in memory
booti - boot Linux kernel ‘Image’ format from memory
bootm - boot application image from memory
bootmenu - ANSI terminal bootmenu
bootp - boot image via network using BOOTP/TFTP protocol
bootvx - Boot vxWorks from an ELF image
button - manage buttons
chpart - change active partition of a MTD device
clk - CLK sub-system
cls - clear screen
cmp - memory compare
coninfo - print console devices and information
cp - memory copy
cpu - Multiprocessor CPU boot manipulation and release
crc32 - checksum calculation
date - get/set/reset date & time
dcache - enable or disable data cache
dfu - Device Firmware Upgrade
dhcp - boot image via network using DHCP/TFTP protocol
dm - Driver model low level access
echo - echo args to console
editenv - edit environment variable
efidebug - Configure UEFI environment
env - environment handling commands
erase - erase FLASH memory
exit - exit script
ext2load - load binary file from a Ext2 filesystem
ext2ls - list files in a directory (default /)
ext4load - load binary file from a Ext4 filesystem
ext4ls - list files in a directory (default /)
ext4size - determine a file’s size
ext4write - create a file in the root directory
false - do nothing, unsuccessfully
fastboot - run as a fastboot usb or udp device
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls - list files in a directory (default /)
fatmkdir - create a directory
fatrm - delete a file
fatsize - determine a file’s size
fatwrite - write file into a dos filesystem
fdt - flattened device tree utility commands
flinfo - print FLASH memory information
fpga - loadable FPGA image support
fru - FRU table info
fstype - Look up a filesystem type
fstypes - List supported filesystem types
gettime - get timer val elapsed
go - start application at address ‘addr’
gpio - query and control gpio pins
gpt - GUID Partition Table
gzwrite - unzip and write memory to block device
help - print command description/usage
i2c - I2C sub-system
icache - enable or disable instruction cache
iminfo - print header information for application image
imxtract - extract a part of a multi-image
itest - return true/false on integer compare
lcdputs - print string on video framebuffer
led - manage LEDs
ln - Create a symbolic link
load - load binary file from a filesystem
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loadx - load binary file over serial line (xmodem mode)
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
ls - list files in a directory (default /)
lzmadec - lzma uncompress a memory region
md - memory display
mdio - MDIO utility commands
mii - MII utility commands
mm - memory modify (auto-incrementing address)
mmc - MMC sub system
mmcinfo - display MMC info
mtd - MTD utils
mtdparts - define flash/nand partitions
mtest - simple RAM read/write test
mw - memory write (fill)
nand - NAND sub-system
nboot - boot from NAND device
net - NET sub-system
nfs - boot image via network using NFS protocol
nm - memory modify (constant address)
panic - Panic with optional message
part - disk partition related commands
ping - send ICMP ECHO_REQUEST to network host
poweroff - Perform POWEROFF of the device
printenv - print environment variables
protect - enable or disable FLASH write protection
pwm - control pwm channels
pxe - commands to get and boot from pxe files
random - fill memory with random pattern
regulator - uclass operations
reset - Perform RESET of the CPU
rtc - RTC subsystem
run - run commands in an environment variable
save - save file to a filesystem
saveenv - save environment variables to persistent storage
scsi - SCSI sub-system
scsiboot - boot from SCSI device
setcurs - set cursor position within screen
setenv - set environment variables
setexpr - set environment variable as the result of eval expression
sf - SPI flash sub-system
sha1sum - compute SHA1 message digest
showvar - print local hushshell variables
size - determine a file’s size
sleep - delay execution for some time
source - run script from memory
sspi - SPI utility command
sysboot - command to get and boot from syslinux files
test - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
tftpput - TFTP put command, for uploading files to a server
thordown - TIZEN “THOR” downloader
time - run commands and summarize execution time
timer - access the system timer
tpm - Issue a TPMv1.x command
tpm2 - Issue a TPMv2.x command
true - do nothing, successfully
ubi - ubi commands
ubifsload - load file from an UBIFS filesystem
ubifsls - list files in a directory
ubifsmount - mount UBIFS volume
ubifsumount - unmount UBIFS volume
ums - Use the UMS [USB Mass Storage]
unbind - Unbind a device from a driver
unlz4 - lz4 uncompress a memory region
unzip - unzip a memory region
usb - USB sub-system
usbboot - boot from USB device
version - print monitor, compiler and linker version
zynqmp - ZynqMP sub-system

cmds help

cmd_help_part

ZynqMP> help part
part - disk partition related commands

Usage:
part uuid <interface> <dev>:<part>
    - print partition UUID
part uuid <interface> <dev>:<part> <varname>
    - set environment variable to partition UUID
part list <interface> <dev>
    - print a device's partition table
part list <interface> <dev> [flags] <varname>
    - set environment variable to the list of partitions
      flags can be -bootable (list only bootable partitions)
part start <interface> <dev> <part> <varname>
    - set environment variable to the start of the partition (in blocks)
      part can be either partition number or partition name
part size <interface> <dev> <part> <varname>
    - set environment variable to the size of the partition (in blocks)
      part can be either partition number or partition name
part number <interface> <dev> <part> <varname>
    - set environment variable to the partition number using the partition name
      part must be specified as partition name
part types
    - list supported partition table types

cmd_help_env

ZynqMP> help env
env - environment handling commands

Usage:
env default [-f] -a - [forcibly] reset default environment
env default [-f] var [...] - [forcibly] reset variable(s) to their default values
env delete [-f] var [...] - [forcibly] delete variable(s)
env edit name - edit environment variable
env exists name - tests for existence of variable
env export [-t | -b | -c] [-s size] addr [var ...] - export environment
env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment
env print [-a | name ...] - print environment
env print -e [-guid guid] [-n] [name ...] - print UEFI environment
env run var [...] - run commands in an environment variable
env save - save environment
env set -e [-nv][-bs][-rt][-at][-a][-i addr:size][-v] name [arg ...]
    - set UEFI variable; unset if '-i' or 'arg' not specified
env set [-f] name [arg ...]

cmd_help_setenv

ZynqMP> help setenv
setenv - set environment variables

Usage:
setenv -e [-guid guid][-nv][-bs][-rt][-at][-a][-v]
        [-i addr:size name], or [name [value ...]]
    - set UEFI variable 'name' to 'value' ...'
      "-guid": GUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
      "-nv": set non-volatile attribute
      "-bs": set boot-service attribute
      "-rt": set runtime attribute
      "-at": set time-based authentication attribute
      "-a": append-write
      "-i addr,size": use <addr,size> as variable's value
      "-v": verbose message
    - delete UEFI variable 'name' if 'value' not specified
setenv [-f] name value ...
    - [forcibly] set environment variable 'name' to 'value ...'
setenv [-f] name
    - [forcibly] delete environment variable 'name'

cmd_help_fstype

ZynqMP> help fstype
fstype - Look up a filesystem type

Usage:
fstype <interface> <dev>:<part>
- print filesystem type
fstype <interface> <dev>:<part> <varname>
- set environment variable to filesystem type

cmd_help_sysboot

ZynqMP> help sysboot
sysboot - command to get and boot from syslinux files

Usage:
sysboot [-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]
    - load and parse syslinux menu file 'filename' from ext2, fat
      or any filesystem on 'dev' on 'interface' to address 'addr'

cmd_help_load

ZynqMP> help load
load - load binary file from a filesystem

Usage:
load <interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]
    - Load binary file 'filename' from partition 'part' on device
       type 'interface' instance 'dev' to address 'addr' in memory.
      'bytes' gives the size to load in bytes.
      If 'bytes' is 0 or omitted, the file is read until the end.
      'pos' gives the file byte position to start reading from.
      If 'pos' is 0 or omitted, the file is read from the start.

cmd_help_source

ZynqMP> help source
source - run script from memory

Usage:
source [addr]
	- run script starting at addr
	- A valid image header must be present
For FIT format uImage addr must include subimage
unit name in the form of addr:<subimg_uname>

cmd_help_booti

ZynqMP> help booti
booti - boot Linux kernel 'Image' format from memory

Usage:
booti [addr [initrd[:size]] [fdt]]
    - boot Linux flat or compressed 'Image' stored at 'addr'
	The argument 'initrd' is optional and specifies the address
	of an initrd in memory. The optional parameter ':size' allows
	specifying the size of a RAW initrd.
	Currently only booting from gz, bz2, lzma and lz4 compression
	types are supported. In order to boot from any of these compressed
	images, user have to set kernel_comp_addr_r and kernel_comp_size environment
	variables beforehand.
	Since booting a Linux kernel requires a flat device-tree, a
	third argument providing the address of the device-tree blob
	is required. To boot a kernel with a device-tree blob but
	without an initrd image, use a '-' for the initrd argument.

cmd_help_bootm

ZynqMP> help bootm
bootm - boot application image from memory

Usage:
bootm [addr [arg ...]]
    - boot application image stored in memory
	passing arguments 'arg ...'; when booting a Linux kernel,
	'arg' can be the address of an initrd image
	When booting a Linux kernel which requires a flat device-tree
	a third argument is required which is the address of the
	device-tree blob. To boot that kernel without an initrd image,
	use a '-' for the second argument. If you do not pass a third
	a bd_info struct will be passed instead
	
For the new multi component uImage format (FIT) addresses
	must be extended to include component or configuration unit name:
	addr:<subimg_uname> - direct component image specification
	addr#<conf_uname>   - configuration specification
	Use iminfo command to get the list of existing component
	images and configurations.

Sub-commands to do part of the bootm sequence.  The sub-commands must be
issued in the order below (it's ok to not issue all sub-commands):
	start [addr [arg ...]]
	loados  - load OS image
	ramdisk - relocate initrd, set env initrd_start/initrd_end
	fdt     - relocate flat device tree
	cmdline - OS specific command line processing/setup
	bdt     - OS specific bd_info processing
	prep    - OS specific prep before relocation or go
	go      - start OS

about uboot-Fit image:
https://www.gibbard.me/linux_fit_images/
https://doc.coreboot.org/lib/payloads/fit.html
https://www.thegoodpenguin.co.uk/blog/u-boot-fit-image-overview/
https://www.marcusfolkesson.se/blog/fit-vs-legacy-image-format/

cmd_help_fatxxxx

fat文件系统的相关命令集，目前一共包括

fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls - list files in a directory (default /)
fatmkdir - create a directory
fatrm - delete a file
fatsize - determine a file’s size
fatwrite - write file into a dos filesystem

一般interface就是mmc ，dev是从0开始的，0,1,2,3… ，part是从1开始的，这点要记得，其实和分区号一样，没有第0分区。
常用的应该是 fatinfo , fatls , fatload 。

fatinfo:click here
fatls:click here
fatmkdir:click here
fatrm:click here
fatsize:click here
fatload:click here
fatwrite:click here

fatcmds_fatinfo

ZynqMP> help fatinfo
fatinfo - print information about filesystem

Usage:
fatinfo <interface> [<dev[:part]>]
    - print information about filesystem from 'dev' on 'interface'

ex:
ZynqMP> fatinfo mmc 0:1
Interface:  mmc
  Device 0: Vendor: Man 0000ad Snr c243ea01 Rev: 0.7 Prod: USD00 
            Type: Removable Hard Disk
            Capacity: 15096.0 MB = 14.7 GB (30916608 x 512)
Filesystem: FAT32 "NO NAME    "

fatcmds_fatload

ZynqMP> help fatload
fatload - load binary file from a dos filesystem

Usage:
fatload <interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]
    - Load binary file 'filename' from 'dev' on 'interface'
      to address 'addr' from dos filesystem.
      'pos' gives the file position to start loading from.
      If 'pos' is omitted, 0 is used. 'pos' requires 'bytes'.
      'bytes' gives the size to load. If 'bytes' is 0 or omitted,
      the load stops on end of file.
      If either 'pos' or 'bytes' are not aligned to
      ARCH_DMA_MINALIGN then a misaligned buffer warning will
      be printed and performance will suffer for the load.

fatcmds_fatls

ZynqMP> help fatls
fatls - list files in a directory (default /)

Usage:
fatls <interface> [<dev[:part]>] [directory]
    - list files from 'dev' on 'interface' in a 'directory'

ex:
ZynqMP> fatls mmc 0:1 /
  1737616   BOOT.BIN
  9310352   image.ub
     2777   boot.scr

3 file(s), 0 dir(s)

fatcmds_fatmkdir

ZynqMP> help fatmkdir
fatmkdir - create a directory

Usage:
fatmkdir <interface> [<dev[:part]>] <directory>
    - create a directory in 'dev' on 'interface'

fatcmds_fatrm

ZynqMP> help fatrm   
fatrm - delete a file

Usage:
fatrm <interface> [<dev[:part]>] <filename>
    - delete a file from 'dev' on 'interface'

fatcmds_fatsize

ZynqMP> help fatsize
fatsize - determine a file's size

Usage:
fatsize <interface> <dev[:part]> <filename>
    - Find file 'filename' from 'dev' on 'interface'
      and determine its size.

fatcmds_fatwrite

ZynqMP> help fatwrite
fatwrite - write file into a dos filesystem

Usage:
fatwrite <interface> <dev[:part]> <addr> <filename> [<bytes> [<offset>]]
    - write file 'filename' from the address 'addr' in RAM
      to 'dev' on 'interface'

cmd_help_sf

ZynqMP> help sf
sf - SPI flash sub-system

Usage:
sf probe [[bus:]cs] [hz] [mode]	- init flash device on given SPI bus
				  and chip select
sf read addr offset|partition len	- read `len' bytes starting at
				          `offset' or from start of mtd
					  `partition'to memory at `addr'
sf write addr offset|partition len	- write `len' bytes from memory
				          at `addr' to flash at `offset'
					  or to start of mtd `partition'
sf erase offset|partition [+]len	- erase `len' bytes from `offset'
					  or from start of mtd `partition'
					 `+len' round up `len' to block size
sf update addr offset|partition len	- erase and write `len' bytes from memory
					  at `addr' to flash at `offset'
					  or to start of mtd `partition'
sf protect lock/unlock sector len	- protect/unprotect 'len' bytes starting
					  at address 'sector'

sf test offset len		- run a very basic destructive test
ex:
ZynqMP> sf probe 0
SF: Detected mt25qu512a with page size 256 Bytes, erase size 64 KiB, total 64 MiB
ZynqMP> sf probe 0:0
SF: Detected mt25qu512a with page size 256 Bytes, erase size 64 KiB, total 64 MiB

cmd_help_net

ZynqMP> help net
net - NET sub-system

Usage:
net list - list available devices

ZynqMP> net list
eth0 : ethernet@ff0e0000 e2:f7:0c:85:ee:d7 active

cmd_help_tftpboot

ZynqMP> help tftpboot
tftpboot - boot image via network using TFTP protocol

Usage:
tftpboot [loadAddress] [[hostIPaddr:]bootfilename]

//该命令仅是从host上下载文件到addr，并不会有后序动作，启动需要后续自己执行bootm/booti 相关命令
//需要设置好uboot的板子的ip，dhcp or static ，能访问到host的tftp服务。

uboot - 命令参考

commands help on xilinx-zynqMP(2022.1)

cmds help

cmd_help_part

cmd_help_env

cmd_help_setenv

cmd_help_fstype

cmd_help_sysboot

cmd_help_load

cmd_help_source

cmd_help_booti

cmd_help_bootm

cmd_help_fatxxxx

fatcmds_fatinfo

fatcmds_fatload

fatcmds_fatls

fatcmds_fatmkdir

fatcmds_fatrm

fatcmds_fatsize

fatcmds_fatwrite

cmd_help_sf

cmd_help_net

cmd_help_tftpboot

Further Reading

uboot - tftpboot

uboot - bootcmd简单分析

uboot - 环境变量参考