Mini2440 unable to boot when buttons have been pressed

Dear all,

I was unable to boot my mini2440 with Linux installed in NAND flash when I
was pressed 1 of 6 user buttons on board.

I switched S2 to NAND correctly, it boot up normally when button haven't
been press.

It boot up into NOR flash when I pressed any buttons, seen from
HyperTerminal connected to serial port of mini2440.

Does anyone faced this problem ? Do you have any recommendation ?

Thanks,
Narongrat

Dear all,

My problem solved.

FriendlyARM technical support recommend me use vboot.bin 
instead of supervivi for bootloader of system.

They tell me that supervivi will check for button press during boot.

Thanks,
Narongrat

Dear frnd,

Just if we change the bootloader instead of supervivi, will it be enough or
else have to change any code and kernel image or write any supporting code
for it??