On Fri, 2016-01-22 at 20:14 +0000, Bhupesh Sharma wrote: > > > -----Original Message----- > > From: Scott Wood [mailto:o...@buserror.net] > > Sent: Saturday, January 23, 2016 1:39 AM > > To: york sun; Zhiqiang Hou; u-boot@lists.denx.de; > > albert.u.b...@aribaud.net; mingkai...@freescale.com; Stuart Yoder; > > le...@freescale.com; prabha...@freescale.com; > > bhupesh.sha...@freescale.com; Zhiqiang Hou > > 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....@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....@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? > > > > One needs to add PSCI node in the DTS for the same, claiming support for > PSCI specification.
So then we need a different dts based on whether PPA is loaded? No thanks. > The cpu.enable_method needs to be changed from spin-table to psci as well. Right, that's part of updating the devicetree to indicate the presence of PSCI. > See http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/a > rm/psci.txt for details. I'm familiar with the binding. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot