[U-Boot] [PATCHv2 2/3] ARMv8/layerscape: Add FSL PPA support

[Zhiqiang Hou]

Hi Rod and Chenhui,

Can you help to answer the questions about PSCI?

> -----Original Message-----
> From: Scott Wood [mailto:oss at buserror.net]
> Sent: 2016年1月23日 4:09
> To: york sun <york.sun at nxp.com>; Zhiqiang Hou <Zhiqiang.Hou at freescale.com>;
> u-boot at lists.denx.de; albert.u.boot at aribaud.net; Mingkai.hu at freescale.com;
> Stuart Yoder <stuart.yoder at nxp.com>; leoli at freescale.com;
> prabhakar at freescale.com; bhupesh.sharma at freescale.com; Zhiqiang Hou
> <zhiqiang.hou at nxp.com>
> Subject: Re: [PATCHv2 2/3] ARMv8/layerscape: Add FSL PPA support
> 
> On Fri, 2016-01-22 at 20:05 +0000, york sun wrote:
> > On 01/21/2016 01:53 AM, Zhiqiang Hou wrote:
> > > From: Hou Zhiqiang <Zhiqiang.Hou at freescale.com>
> > >
> > > The FSL Primary Protected Application (PPA) is a software component
> > > loaded during boot which runs in TrustZone and remains resident
> > > after boot.
> > >
> > > Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou at freescale.com>
> > > ---
> > > Tested on LS1043A RDB board
> > >
> >
> > I presume PSCI is implemented in PPA. How does the SMP boot flow
> > change with PPA? U-boot has to remain functional in the absence of PPA, right?
> >
> > Would it be possible to write a readme for PPA?
> 
> Also, how does the devicetree get updated to indicate the presence of PSCI?
> 

Thanks,
Zhiqiang