some problems obout montavista linux

king king said:

i want to remove support for config info, to make kernel smaller,i have to set the CONFIG_IKCONFIG=NO. can somebody tell me where i will to  modify in the linux codes.

1. Edit the file .config in the 'base' directory containing your linux kernel.
2. Look for the definition of CONFIG_IKCONFIG.
3. Change:
      CONFIG_IKCONFIG=y
   to:
      # CONFIG_IKCONFIG is not set

You could also do this via "make menuconfig"
  General setup  --->
    <*> Kernel .config support

  Press Spacebar to deselect the option so that it appears as:
    < > Kernel .config support

king king said:

And  who have the ideas about fastboot of montavista within 2 second!!!!

There was a thread with the same topic few days ago. Just to repeat my recommendation:
Go through the wiki page: http://processors.wiki.ti.com/index.php/Optimize_Linux_Boot_Time

Though it uses AM37x for illustration, most of the concepts are generic Linux and should apply even to your kernel as well.