How to config file for jffs2.?

[HS8JCV]

Hi all
Now.
I have at91rm9200dk board.
This board have SDRAM 32 MByte and Nor Flash 4 Mbyte(SST39VF32010).
I port kernel 2.4.27-vrs1.
I will save data to nor flash on board.
I know. I should be use jffs2.
But.I never use it.
Please suggest me for use it.

How many files in kernel source code(linux-2.4.27-vrs1) for config it.?
Which files for config it?

Sorry for language.

Best Regard
Mr.X