JackOfAll wrote: > Not quite sure what you mean..... RPi2B can use an armv6hl compiled > image but obviously needs the ARMv7 BCM2709 "flavour" kernel to boot it. > I made 2 images. (Please don't ask for them. Won't be publicly > released.) The "one size fits all" F20 base image I use for both B/B+/2B > is armv6hl, plus both BCM2708/BCM2709 kernels. (Which kernel to use, is > chosen at boot time automatically, depending on hardware.) The > "optimised" F21 image, because everything has been built for armv7hl > cannot be used with B/B+ even with a BCM2708 "flavour" kernel. That's > not backward compatible. > > At the point Triode wants to support 2B, he can just add an additional > BCM2709 "flavour" kernel along side the BCM2708 kernel to his existing > Pi build. The kernels live side by side. (ARMv7 defaults to > /boot/kernel7.img. ARMv6 to /boot/kernel.img. Hasn't changed.) Or he can > choose to have a totally new optimised armv7hl image, and take advantage > of Neon in a couple of places, optimised for 2B and leave the current > image as-is for the older hardware. > > I'm quite impressed with what they (Pi Foundation) have achieved with > device tree and auto-detection and having one core armv6hl image and > detection at boot time, booting the relevant kernel. It's nice that > there is the backward compatibility, even if the 2B isn't running the > optimised code that it could be. But then, backward compatability has > always been one of their main aims, rather than a pissing contest over > hardware specs. Even with the less than optimal 10/100 ether via USB and > lack of SATA, the 2B is a stupidly good piece of hardware for the > money! > > I actually have 7x Pi2B's humming away right now, running transcoding > benchmarks. ;)
* No idea what you mean with F20/F21 image. * Don't worry. I won't ask you for anything anymore. I learned my lesson. * I think Triode should, if he's considering it at all, build a clean armv7h image that's able to take advantage of all the architectural features. * I'm quite happy that the PI foundation is evolving its products. However it can be done better at similar cost levels (see Odroid C1). * "pissing contest over hardware specs" - fact is that you'll get what you pay for. One of the worst performing hardware in the segment. Where it shines is the SW and community support. The hype around the board makes it a success. That's why most other boards fail. ::: ' Touch Toolbox and more' (http://soundcheck-audio.blogspot.com) ::: by soundcheck ------------------------------------------------------------------------ soundcheck's Profile: http://forums.slimdevices.com/member.php?userid=34383 View this thread: http://forums.slimdevices.com/showthread.php?t=101624 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
