On 01/22/2016 12:14 PM, 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. > The cpu.enable_method needs to be changed from spin-table to psci as well. > > See > http://lxr.free-electrons.com/source/Documentation/devicetree/bindings/arm/psci.txt > for details. >
Bhupesh, Before PPA is fully adopted, u-boot has to detect the existence of PPA and decide to use PSCI or spin table, right? So the device tree node should also be fixed accordingly. York _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
