Future (kernel/userspace dev questions, no FUD plz)

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UPDATE: All sources are available from Samsung now!!! Even the video drivers! And the bootloader indeed accepts unsigned images

Hi guys!

I heard lots of contradicting stuff on the future-proofness of SgS...
The most disturbed(sic) being "encrypted drivers"

Therefore I really-really would like to know:

1. Is the source for the video module available somewhere?
2. Are any of the (other) kernel modules closed source?
3. Are any of the (for full hardware functionality) essential userspace components closed source?
4. Are any of (1) (2) (3) encrypted/protected against reverse engineering?
5. Does the bootloader accept unsigned kernels? (As far as I could google, it does, but you never know...)

Thank you very much! It is really hard to find definite info on these subjects.

UPDATE: All sources are available from Samsung now!!! Even the video drivers! And the bootloader indeed accepts unsigned images

I researched myself, and...

1. Is the source for the video module available somewhere?

There are 3 separate kernel modules (base, lcd, 3d) for video. NEITHER of these are open source. AFAIC google, no open source alternatives exists.

2. Are any of the (other) kernel modules closed source?

AFAIK the rest of the kernel, and its modules are open source.

I would love to know this too.

The best I could find is some (older) Nokia PowerVR SGX drivers, but - since only the architecture is licensed from ImgTec, and not the hardware - these are not likely to work without any heavy tweaking... even in 2D.