m8b_m201_1G#help
?       - alias for 'help'
adc     - M6 ADC test
aml_sysrecovery- Burning with amlogic format package from partition sysrecovery
amlnf   - AMLPHYNAND sub-system
amlnf_test- AMLPHYNAND sub-system
autoping- do auto ping test
autoscr - run script from memory
base    - print or set address offset
bdinfo  - print Board Info structure
bmp     - manipulate BMP image data
boardid_prefetch- boardid sub-system
bootm   - boot application image from memory
bootp   - boot image via network using BOOTP/TFTP protocol
cali    - configure clock phare
calinfo - calinfo print the chip calibration info
cbusreg - cbus register read/write
checkhw - Get the hardware revsion
clear_rebootmode- clear rebootmode
clkmsr  - measure PLL clock
cmp     - memory compare
coninfo - print console devices and information
cp      - memory copy
crc32   - checksum calculation
dcache  - enable or disable data cache
defenv  - default environment
defenv_without- defenv without environment variables
dhcp    - boot image via network using DHCP/TFTP protocol
dtbinit - init some env by reading dtb file
dtbload - load binary dtb file from a dos filesystem
echo    - echo args to console
editenv - edit environment variable
efuse   - efuse version/licence/mac/hdcp/usid read/write or dump raw efuse data commands or info(display chip efuse info)
env     - environment handling commands
ethchk  - check ethernet status
ethdbg  - set ethernet debug level
ethmode - set ethernet mac mode
ethrst  - reset ethernet phy
exit    - exit script
ext2load- load binary file from a Ext2 filesystem
ext2ls  - list files in a directory (default /)
false   - do nothing, unsuccessfully
fatexist- find the file from a dos filesystem
fatinfo - print information about filesystem
fatload - load binary file from a dos filesystem
fatls   - list files in a directory (default /)
fdt     - flattened device tree utility commands
get_img_size- get img size and save the result as a environment variable
get_rebootmode- get reboot mode
go      - start application at address 'addr'
gset    - gpio commands
help    - print command description/usage
icache  - enable or disable instruction cache
imgread - Read the image from internal flash with actual size
imxtract- extract a part of a multi-image
irdetect- Detect IR Key to start recovery system
irkey   - irkey key_value time_value
itest   - return true/false on integer compare
keyunify- key unify sub-system
kgdb    - enter gdb remote debug mode
loadb   - load binary file over serial line (kermit mode)
loadenv - load environment at address 'addr'
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)
logo    - logo sub-system
loop    - infinite loop on address range
macreg  - ethernet mac register read/write/dump
md      - memory display
mdc_clk - do mdc clock
mm      - memory modify (auto-incrementing address)
mmc     - MMC sub system
mmcinfo - mmcinfo <dev num>-- display MMC info
msleep  - delay execution for some time
msr     - Meson msr sub-system
mtest   - simple RAM read/write test
mw      - memory write (fill)
netspd_f- enforce eth speed
nm      - memory modify (constant address)
phyreg  - ethernet phy register read/write/dump
ping    - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
put     - put  storage 
pwm     - pwm sub-system
rarpboot- boot image via network using RARP/TFTP protocol
reset   - Perform RESET of the CPU
run     - run commands in an environment variable
saradc  - saradc sub-system
saveenv - save environment variables to persistent storage
sdc_burn- Burning with amlogic format package in sdmmc 
sdc_update- Burning a partition with image file in sdmmc card
secukey - security KEY sub-system
setenv  - set environment variables
sf      - SPI flash sub-system
showvar - print local hushshell variables
sleep   - delay execution for some time
source  - run script from memory
ssecukey- NAND KEY sub-system
store   - STORE sub-system
suspend - suspend
test    - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
true    - do nothing, successfully
unifykey- unifykey read/write based on the driver keymanage
unpackimg- unpack imgpack to single
update  - Enter v2 usbburning mode
usb     - USB sub-system
usb_burn- Burning with amlogic format package in usb 
usb_update- Burning a partition with image file in usb host
usbbc   - test usb bc
usbboot - boot from USB device
usid_prefetch- usid sub-system
uuid_prefetch- uuid sub-system
version - print monitor, compiler and linker version
video   - video sub-system