Question [Q] Information needed.

Guys i want to know if our device requires
1) A custom recovery.fstab, such as those containing an /sdcard symlinked to /data/media.

/sdcard datamedia /dev/null
# more recovery.fstab entries here

2) A custom graphics.c, such as those which may have non-aosp framebuffer format

3) And if it Performs any device specific initialization using the script.

If our device requires or has those can you give me the download links?