On 8/13/2013 7:01 PM, Santosh Shilimkar wrote: > On Tuesday 13 August 2013 07:19 AM, Will Deacon wrote: >> On Mon, Aug 12, 2013 at 07:34:13PM +0100, Santosh Shilimkar wrote: >>> On Friday 02 August 2013 11:48 AM, Will Deacon wrote: >>>> I think this an A9-specific register, which reads as 0 on UP A9 and reads >>>> as >>>> some form of PERIPH_BASE for SMP parts. The issue I have is when >>>> PERIPH_BASE >>>> is zero. >>>> >>> What do we do here ? Should we document this in the code and proceed ? >>> Mostly there is no platform with PERIPH_BASE = 0, so its should be fine but >>> I am open for any other alternative. >> >> The only other alternative I can think of is forcing people to have >> CONFIG_SMP=n, but that blows away single zImage for your platform. >> > Yep which surely we don't want considering after so much effort we > have it working first place. How about going ahead with assumption > that PERIPH_BASE = 0 case doesn't work.
I must be missing something but why cannot we use the SCU configuration register "CPU number" field to determine that its a UP? I do not have an OMAP4 board, but on AM437x, it certainly indicates only CPU0 present. Thanks, Sekhar -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
