[maemo-developers] How much are Nxxx open?

[From: Nicola Mfb]

Hi!
I'm new to this community and these nice Nokia devices, and I'd like
to join/contribute/develop for it and buy the upcoming N900.
Before proceeding further I'd like to know a bit about its "openess".
Already googled but there are not much and coherent informations about
that.
I come from OpenMoko Freerunner experience, where I'm able to flash
the bootloader, the logo, the kernel, the rootfs and have multiple
boot option to run several linux distro on different sd partitions.
There are two bootloaders, the first in NOR readonly, the second in
NAND and is used as default and is flashable, so you are able to use a
modern and upgradable bootloader and if something goes wrong are able
to debrick it booting from NOR, making the freerunner perfect as a
Linux hacking device.
The hardware is exposed by kernel in a standard way, e.g. the phone
audio connections are managed by alsa while on other fakefree devices
(like HTC dream) there are some closed source libraries to do that
preventing the port of opensource phone stack (FSO).
So may someone explain what's about the N900? How much is it open?

Thank you in advance and best regards!

    Nicola