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3.5.2
Change ROM-3420 Boot Logo
By default, ROM-3420 shows a boot logo when booting up. You can replace the logo
to whatever your want by following the steps below:
1.
Install "netpbm"
# sudo apt‐get install netpbm
2.
Prepare your boot logo. For example: bootlogo.png (Under folder Desktop/boot-
logo)
Note!
This picture should be in PNG format and less than 224 colors. It is sug-
gested to have the image resolution equal to your LCD panel size.
3.
Open "Terminal" on Ubuntu 10.04 LTS..
$sudo su (Change to "root" authority)
4.
5.
Input user password.
#cd Desktop/bootlogo (Go into the folder that bootlogo.png located)
6.
#pngtopnm bootlogo.png | ppmquant 224 | pnmtoplainpnm >
7.
logo_linux_clut224.ppm
8.
logo_linux_clut224.ppm to the directory source/linux-3.0.35/drivers/video/
logo/.
9.
Then you can refer Chapter 3.4.2 to rebuild the kernel with your own boot logo.
3.6
Debug Console
Connect the 9-pin D-SUB of the debug console cable with the host computer serial
port and use a serial port terminal application (like minicom, putty or teraterm) to con-
figure serial port as 115200 8N1.
Then plug the 5-pin connector of the debug console cable into ROM-3420's debug
port (also known as /dev/ttymxc0 in Linux system)
3.7
Boot up from the SD card, onboard eMMC or
SATA DOM
3.7.1
Boot up from the SD card
3.7.1.1
Create a bootable SD card
1.
Open one terminal console and change directory to BSP scripts folder
2.
Perform following command: (assume SD card's device name is /dev/sdf)
sudo ./mksd‐linux.sh /dev/sdf
3.
Remove SD card from PC/NB
3.7.1.2
Set the DIP switch
1.
Open one debug console
2.
Turn off ROM-3420
3.
Plug a bootable SD card into ROM-DB3900's SD slot
4.
Set Dip switch to 1-OFF/2-ON/3-ON
5.
Turn on ROM-3420
29
ROM-3420 User Manual
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