The tutorials in this serial are targeted at Linux-2.6.25.8 and Linux-2.6.30.4.

There are some file structure difference between Linux-2.6.25.8 and Linux-2.6.30.4:

The main difference is the header files location. In linux-2.5.25.8, the S3C2440 related header files are put under "include/asm-arm/arch-s3c2410/", while they are put under "arch/arm/mach-s3c2410/include/", "arch/arm/plat-s3c/include"  and "arch/arm/plat-s3c24xx/include" in Linux-2.6.30.4.

Download kernel:

Linux-2.6.25.8:   ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.8.tar.bz2

Linux-2.6.30.4:   ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.4.tar.bz2