The firmware in the set-top box has a key file is my name, now a infinite restart the TTL can output but not the input, can't use button interrupt uboot, can only insert U disk to run the script file inside, studied the several days, found a lot of IO command is to modify the file content, don't know how to modify the file name,

 & gt;> 1 help 
? - alias for 'help' 
Ac - set a new config to the bootargs 

Add_autotest add_autotest - Perform this 

Add_hsl add_hsl - this with an HSL 

Base - print or set the address offset 
Bdinfo - print Board Info structure 
Bin2nand - bin2nand usbport withsparedata? 1-0 binname partition_name - read binary files and restore it to nand 

> Help bin2nand 
Bin2nand - bin2nand usbport withsparedata? 1-0 binname partition_name - read binary files and restore it to nand 

Usage: 
Bin2nand command: bin2nand usbport withsparedata? 1-0 binname partition_name 


Bininfo bininfo - print the parameter information of each partition and the environment 

The boot, boot default, i.e. for, run 'bootcmd' 
Bootargs_set - Set info exchange and Set to boot args. 
Bootcheck bootcheck - Do the boot check 

Bootd - boot default, i.e. for, run 'bootcmd' 
Bootlogo bootlogo - Display Logo_Music 

Bootm - boot application image from the memory 
The bootp - the boot image via network using the bootp/TFTP protocol 
Bootvideo bootvideo - Display Logo_Video 

Checkfile - check the file exist in the u disk, and set the partition. 
Chpart - change the active partition 
CMP - memory compare 
Config2env - Set config to the environment. 
Config_raw_io - Config the target device for raw I/O 
Coninfo - print the console devices and information 
Costar - do oad update from the specified file belong in oad partition 

Cp - the memory copy 
Crc32 - checksum calculation 
Custar - do usb update from the specified file belong in usb. 

DBG - set the debug message level. The Default level is INFO 
Dbtable_init dbtable_init - let the data is ready (logo, music, a panel, Ursa). 

Dc - delete the specific cofig belong in the bootargs 

Delay - delay time, the time unit is ms 

Destroy_logo destroy_logo - Stop logo display 

DHCP - the boot image via network using DHCP/TFTP protocol 
Dmx_init dmx_init - the initialize the demux setting 

Dont_overwrite - This serial apis are for protecting the specific partitions are overwrited. Ex: customer 
This CMD is 2 register which partition should not be overwrite 

Dont_overwrite_free - This serial apis are for protecting the specific partitions are overwrited. Ex: customer 
This CMD is 2 free all registered partitions. 

Dont_overwrite_init - This serial apis are for protecting the specific partitions are overwrited. Ex: customer 
This CMD is 2 init This function 

Draw_jpg blt_jpg - Blt JPG 

Draw_pixel draw_pixel - draw a pixel with color 

Draw_progress draw_string - the draw string with color 

Draw_rect draw_rect - the draw the rect with color 

Draw_string draw_string - the draw string with color 

Du du - Disable UART 

Dynpart - dynamically calculate partition table -based on & lt; MTD - def>/'dynparts and BBT (it is better to set the last partition size to SIZE_REMAINING) 
Ebist - PHY loopback test 
Echo - echo the args to console 
Editenv - edit environment variable 
Edump - EMAC Register during Settings dump 
Eloopback - Long loopback test 
Env - environment handling commands 
Epd - emac power down during 
Estart - EMAC start during 
Exit, exit the script 
False - do nothing and unsuccessfully 
Fatfilesize fatfilesize - load binary file from a DOS filesystem 

Fatinfo - print information about filesystem 
Fatload - load binary file from a DOS filesystem 
Fatls - list files in a directory (the default/) 
Fatpartload fatpartload - load binary file from a DOS filesystem 

Fatwrite fatwrite - write binary file to a DOS filesystem 
> Help fatwrite 
Fatwrite fatwrite - write binary file to a DOS filesystem 


Usage: 
Fatwrite & lt; Interface>   (bytes) 
- the load binary file 'filename' from 'dev' on 'interface' 
To address 'addr from DOS filesystem 

Filelist - Dump the file list. 

Filelisttest - This command is only for file list test 

Filepartload - load part of a file to RAM 
Force_overwrite - This serial apis are for force write and re - create partitions. 
This CMD is 2 register which partition should force overwrite 

Force_overwrite_init - This serial apis are for force write and re - create partitions. 
This CMD is 2 register which partition should force overwrite 

Get_mboot_config - get mboot config from binary coverted from mboot_config. Ini 
Get_mmap - get the memory info from supernova 's mmap 
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