Can anyone tell what's the advantage of Coreboot on ARM? Grub I get, since its command line is more useful than uboot's, and it can read a text conf file, but I don't see the advantage in Coreboot.
In general, coreboot's ARM support is still under construction. There are a number of boards that are experimentally supported, but supporting more SoCs ensures that we build something for everything.
As for the user benefits, firmware is supposed to stay out of the way, so end users won't see much of them. For developers (which are also "users" of firmware code bases), coreboot offers different design decisions in a number of places: We try to separate hardware init from "user interface" (where uboot combines both), we try to keep the hardware init part small (I think that was one of the reasons why the Qi bootloader project was started, too), we try to keep vendor branches at a minimum, and finally we don't shy away from tree cleanups across all boards and architectures (since there are few decisions that truly stand the test of time - and hardware progress).
In the end we hope this provides a code base that is more pleasing to work with, but that's obviously both biased and a matter of taste :-)
Huawei Tron was announced today, it is an android games console for $120 (in china) inc gamepad with these specs:
Tegra 4 (quadcore cortex a15 at an unknown clockspeed)
1 x usb 3.0 port
1 x ethernet port (unknown if gigabit or not)
micro sd card slot
3.5mm stereo jack.
Huawei game controller.
If we could get ubuntu or another linux distro working on this it would make for a good spec low power pc.