[Pdbg] [PATCH] main: Add P8 kernel devicetree

[Benjamin Herrenschmidt]

On Mon, 2018-08-13 at 16:13 +0930, Joel Stanley wrote:
> On Mon, 13 Aug 2018 at 14:48, Alistair Popple <alistair at popple.id.au> wrote:
> > 
> > Joel do you know if there is someway to differentiate between P8 and P9 on
> > OpenBMC? This patch makes it mandatory to specify p8 vs. p9 on the command line
> > which feels like a step backwards. If we can't do it from the BMC then we will
> > have to probe it from the host.
> 
> I spent more time than I'd like to admit looking at this last week.
> 
> We could assume that ast2400 == p8, as it is true for all the machines
> that exist to date.
> 
> I looked into geteauxval etc, but it appears there's no way to detect
> you're on an ast2400 (or even just an ARM9) without parsing files. So
> the 'best' we have would be to open up the device tree at
> /sys/firmware, or parse /proc/cpuinfo.
> 
> The device tree would be neater.

What about CFAM ID ?

Ben.