[U-Boot] [PATCH 1/2] imx-common: Enable ACTLR.SMP bit for i.MX cortex-a7 platforms

[Peng Fan]

Hi Stefano,

> -----Original Message-----
> From: Stefano Babic [mailto:sbabic at denx.de]
> Sent: Thursday, April 13, 2017 2:24 PM
> To: Peng Fan <peng.fan at nxp.com>; Stefano Babic <sbabic at denx.de>
> Cc: van.freenix at gmail.com; u-boot at lists.denx.de; andre.przywara at arm.com;
> Albert ARIBAUD <albert.u.boot at aribaud.net>
> Subject: Re: [PATCH 1/2] imx-common: Enable ACTLR.SMP bit for i.MX cortex-
> a7 platforms
> 
> Hi Peng,
> 
> On 13/04/2017 05:05, Peng Fan wrote:
> 
> >> Anyway, it looks to me wrong to fix this in i.MX code, as this must
> >> be fixed for all Cortex-A7. It should be fixed in general ARM code.
> >>
> >> And Andre has already sent patches for this (at least for sunxi), but
> >> with the opposite rule (default is set if not specific requested).
> >
> > Thanks for correcting me. I see Andre's patch
> > https://lists.denx.de/pipermail/u-boot/2017-February/279918.html
> >
> > It only handles sunxi platform. If we need fix i.MX A7 cores, do you prefer I
> set the SMP bit in s_init for i.MX6UL/7?
> > Or you prefer this should be handled by common ARM code?
> 
> As far as I understand, this issue is common to all A7 cores ==> fix should be in
> common ARM code.

Ok. Since there is no Cortex-A[x] revision check in U-Boot, need to first add the code.
Then set ACTLR.SMP for A7 SMP.

Regards,
Peng.