Thanks Bill. That parameter CONFIG_ZERO_BOOTDELAY_CHECK is u-boot's
internal parameter. If u-boot is built with this check then it checks
for press of a switch when bootdelay is zero. I did not go into detail
of this. But I solved my problem in another way.
After loading linux I deleted the linuxrc file, which is I think the
Kernel image. And after that I gave command 'reboot'. So when the
system was rebooted, it found that there is no valid kernel image so
control was returned to uboot. I changed the bootdelay to 8 properly
now.
Now, this deletion of linuxrc was effective only on the linux loaded
in RAM so the NAND flash still holds complete linux. So when I power
cycled the board it came up correctly.
I do not know the reason why changes made to file system are not
effective on NAND storage. There must be some explicit action required
for that. I will find out later.
Thanks for your help..
Regards,
On Mar 4, 11:20 pm, Bill Traynor <
btray...@gmail.com> wrote: