[Tinkerphones] Dual personality systems (was Re: ZeroPhone site offline)

Jonas Smedegaard jonas at jones.dk
Sat Jan 8 22:49:19 CET 2022


Quoting David Boddie (2022-01-08 22:17:22)
> On Wed Jan 5 01:28:49 CET 2022, Paul Boddie wrote:
> > Actually, a kind of dual personality system might address some of 
> > the general issues with vanilla Linux on smartphones, and I suspect 
> > that Linux alongside real-time components is a recognised 
> > architectural style for some kinds of devices.��
> 
> Since various SoCs started to include smaller cores along with the 
> bigger, more powerful ones 
> (https://en.wikipedia.org/wiki/ARM_big.LITTLE) it makes me wonder if 
> it wouldn't be possible to run a lightweight telephony-focused stack 
> on the low power core while running full-fat Linux on the high power 
> core.
> 
> That way, the Linux side of things wouldn't even need to be aware of 
> how the telephony is done, and could interact with those components 
> using more familiar mechanisms, perhaps similar to ways two hosts on a 
> network might talk to each other.

Even current generation PinePhone might be made to run a (very) 
lightweight telephony-focused stack, on its embedded 32bit 300MHz AR100 
processor.

I maintain the needed compiler for Debian in package gcc-or1k-elf, and 
getting Linux compiled seems doable for someone with the skills (i.e. 
not me): https://linux-sunxi.org/AR100#Mainline_Kernel_Support


 - Jonas

-- 
 * Jonas Smedegaard - idealist & Internet-arkitekt
 * Tlf.: +45 40843136  Website: http://dr.jones.dk/

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