Tiny4412 and touchscreen problem

First, I want to tell you that I use Linux OS, not Android OS

I use linux kernel from the CD but it has a problem with LCD
touchscreen(S702). When I port it to my tiny4412, the LCD touchscreen work
but it doesn't display full and clearly,it also lags, I can't calibrate or
work with it.

I also try to cross-compile linux source to make new zImage but when I port
it to tiny4412, LCD touchscreen don't work, it doesn't display anything.

Could you give me an idea to solve this problem or upload a zImage that
touchscreen work perfectly for me?

Hello ,
   Maybe you should modify your friendlyarm.ini , such as : LowFormat = Yes
  Or you should use the newest superboot.bin .

Thanks jiameijiang, I have replaced arm-linux-gcc-4.3.2 with
arm-linux-gcc-4.5.1 and I have recompiled linux source with it and the LCD
touchscreen works perfectly.