u-boot cli has password 

nvt@na51089: ********
 password correct !
nvt@na51089: version
U-Boot 2019.04+ (Aug 30 2022 - 14:28:31 +0800)

arm-ca9-linux-uclibcgnueabihf-gcc.br_real (Buildroot 2020.02.9-10-g744f210) 8.4.0
GNU ld (GNU Binutils) 2.33.1
nvt@na51089: printenv
arch=arm
baudrate=115200
board=nvt-na51089
board_name=nvt-na51089
bootargs=earlyprintk console=ttyS0,115200 rootwait nprofile_irq_duration=on root=ubi0:rootfs rootfstype=ubifs ubi.fm_autoconvert=1 init=/linuxrc  mtdparts=spi_nand.0:0x40000@0x0(loader),0x20000@0x2e0000(defcfg),0x1000000@0x6000000(custom),0xc00000@0x7000000(config),0x400000@0x7c00000(encrypt)  ubi.mtd=7 ro
bootcmd=nvt_boot
bootdelay=0
cpu=armv7
db=tftp 0x4000000 boot.img;flwrite
dc=tftp 0x4000000 custom.img;flwrite
df=tftp 0x4000000 config.img;flwrite
dk=tftp 0x4000000 kernel.img;flwrite
dl=tftp 0x4000000 logo.img; flwrite
dr=tftp 0x4000000 rootfs.img;flwrite
dt=tftp 0x4000000 fdt.img;flwrite
du=tftp 0x4000000 user.img;flwrite
ethact=eth_na51089
ethaddr=<mac:6351bc709b94fd2e>
fdtcontroladdr=f320860
gatewayip=192.168.1.254
hostname=soclnx
ipaddr=192.168.1.10
mtdids=nand0=spi_nand.0
mtdparts=mtdparts=spi_nand.0:0x40000@0x0(loader),0x40000@0x40000(fdt),0x40000@0x80000(fdt),0x200000@0xc0000(uboot),0x20000@0x2c0000(uenv),0x20000@0x2e0000(defcfg),0x500000@0x300000(linux),0x5800000@0x800000(rootfs0),0x1000000@0x6000000(custom),0xc00000@0x7000000(config),0x400000@0x7c00000(encrypt)
netmask=255.255.255.0
serverip=192.168.1.12
soc=nvt-na51089_a32
stderr=serial
stdin=serial
stdout=serial
up=tftp 0x4000000 update.img;flwrite
vendor=novatek
ver=U-Boot 2019.04+ (Aug 30 2022 - 14:28:31 +0800)
xapp=1
xipcprd=HZOUZHINUOIPCPRD
xuart=1
xupdata=0

Environment size: 1417/131068 bytes
nvt@na51089: help
?         - alias for 'help'
base      - print or set address offset
bdinfo    - print Board Info structure
blkcache  - block cache diagnostics and control
bootm     - boot application image from memory
bootp     - boot image via network using BOOTP/TFTP protocol
cfgshow   - show config item
chpart    - change active partition
cmp       - memory compare
cp        - memory copy
cramfsload- load binary file from a filesystem image
cramfsls  - list files in a directory (default /)
crc32     - checksum calculation
dhcp      - boot image via network using DHCP/TFTP protocol
env       - environment handling commands
erasemtd  - earse mtd
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
flwrite   - write data into FLASH memory
gpio      - query and control gpio pins
help      - print command description/usage
loadb     - load binary file over serial line (kermit mode)
loadx     - load binary file over serial line (xmodem mode)
loady     - load binary file over serial line (ymodem mode)
loop      - infinite loop on address range
md        - memory display
md5sum    - compute MD5 message digest
mdio      - MDIO utility commands
mii       - MII utility commands
mm        - memory modify (auto-incrementing address)
mmc       - MMC sub system
mmcinfo   - display MMC info
mtdparts  - define flash/nand partitions
mw        - memory write (fill)
nand      - NAND sub-system
nboot     - boot from NAND device
nm        - memory modify (constant address)
nvt_boot  - To do nvt platform boot init.
nvt_cpu_freq- change cpu freq
nvt_encrypt- To encrypt via key manager sample
nvt_get_cpu_freq- get cpu freq
nvt_get_ddr_freq- get ddr freq/type

nvt_jtag_disable- jtag disable
nvt_key_set_engine_right- To read key set X
nvt_read_key_set- To read key set X
nvt_read_lock- To let key set X un-readable
nvt_rtos_disable- To disable uboot boot rtos
nvt_secure_en- secure enable related API
nvt_uart_disable- To disable uart print
nvt_update_all- To Update all-in-one image from memory address and size

nvt_write_key- To write key via OTP sample
ping      - send ICMP ECHO_REQUEST to network host
printenv  - print environment variables
reset     - Perform RESET of the CPU
run       - run commands in an environment variable
rwbompid  - read or write bompid
rwhwid    - read or write hwid
saveenv   - save environment variables to persistent storage
setenv    - set environment variables
tftpboot  - boot image via network using TFTP protocol
ubi       - ubi commands
ubifile   - load UBIFS volume
ubifsload - load file from an UBIFS filesystem
ubifsls   - list files in a directory
ubifsmount- mount UBIFS volume
ubifsumount- unmount UBIFS volume
version   - print monitor, compiler and linker version