# cu -l /dev/ttyS0 -s 115200
Connected.

BOOT_OK!LDR_OK
LZMA Decompression...ok
MDrv_PM_RtcGetCounter(CurrentCounter=0)

Hello U-Boot


U-Boot 1.1.6 (Jun 27 2012 - 08:51:17)

Board: MSTAR KRNOUS (CPU Speed 552 MHz)
DRAM:  128 X 0 MBytes
U-Boot is running at DRAM 0x87600000
###############BOARD CONFIGURATION#####################
	DEFAULT ENBALE L2-Cache
	FPU(DISABLE)
	ENABLE_DDR3_16BIT_MODE
   DDR_FREQUENCY(1600MHz)
###############BOARD CONFIGURATION#####################
Module: USB FAT FLASH SPI OSD ENV=SERIAL
Flash is detected (0x0803, 0x01, 0x02, 0x16)
MDrv_SERFLASH_GetInfo()
	u32AccessWidth = 1
	u32TotalSize   = 8388608
	u32SecNum      = 128
	u32SecSize     = 65536
In:    serial
Out:   serial
Err:   serial
MSVC00B000100100208768TH0000000T
Hit any key to stop autoboot:  0

<< MStar >># ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
Unknown command 'ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg' - try 'help'
<< MStar >># help
?       - alias for 'help'

do Lzma for compress image

base    - print or set address offset

bdinfo  - print Board Info structure

bootm   - boot application image from memory

cmp     - memory compare

coninfo - print console devices and information

cp      - memory copy

cpmsbin   - Copy ms bin file (Chakra) from nand to dram

crc32   - checksum calculation

cusid check the image is release by the valid guys

dcache  - enable or disable data cache

draw_pixel - draw a pixel with color

draw_string - draw string with color

draw_rect - draw rect with color

draw_string - draw string with color

du  - Disable UART

env2flash - read environment parameter file and restore it to flash

envbin - read out environment parameter and store it to usb disk

erase   - erase FLASH memory

fatinfo - print information about filesystem

fatload - load binary file from a dos filesystem

fatls   - list files in a directory (default /)

fatwrite - write binary file to a dos filesystem

flinfo  - print FLASH memory information

go      - start application at address 'addr'

help    - print online help

loop    - infinite loop on address range

md      - memory display

mm      - memory modify (auto-incrementing)

mstar   - update kernal & root file system automatically by script file

mtest   - simple RAM test

mw      - memory write (fill)

ustar   - update kernal & root file system automatically by script file

nm      - memory modify (constant address)

osd_create - create osd layer

osd_destroy - destroy osd layer

pnlinfo   - set panel info and save to nand flahs

printenv- print environment variables

protect - enable or disable FLASH write protection

reset   - Perform RESET of the CPU

run     - run commands in an environment variable

saveenv - save environment variables to persistent storage

setenv  - set environment variables

spi_dma - SPI copy data from flash to DRAM by PIU DMA

spi_ea  - SPI erase all

spi_eb  - SPI erase block

spi_gfo - SPI get flash info

spi_gr  - SPI get Chip Rev

spi_id  - SPI read ID

spi_in  - SPI initialization

spi_r   - SPI read commands

spi_rb  - SPI read buffer

spi_rdc - SPI read code from SPI flash to DRAM

spi_rs  - SPI read status

spi_w   - SPI write commands

spi_wb  - SPI write buffer

spi_wp  - SPI write protect

spi_wrc - SPI write code from DRAM to SPI flash

sspi    - SPI utility commands

sysinfo   - set system info and save to nand flahs

usb     - USB sub-system

ustar   - update kernal & root file system automatically by script file

usbboot - boot from USB device

ustar   - update kernal & root file system automatically by script file

version - print monitor version

<< MStar >># printenv
bootdelay=0
baudrate=115200
preboot=echo;echo Type "help" for more commands.
MS_BOARD=BD_MST124D_D02A_S
stdin=serial
stdout=serial
stderr=serial

Environment size: 145/65532 bytes
<< MStar >>#