[PATCH] ARM: dts: hip04: move bootwrapper to SRAM

[arnd@arndb.de (Arnd Bergmann)]

On Tuesday 13 January 2015 14:18:16 Frediano Ziglio wrote:
> > On Tuesday 13 January 2015 18:28:32 Wei Xu wrote:
> > >
> > > > Generally speaking it's not ok to change firmware interfaces in an
> > > > incompatible way. The preferred way to handle this would be to have
> > > > the firmware that puts the boot wrapper into a different place also
> > > > update this property, if at all possible.
> > >
> > > I very agreed with you.
> > >
> > > But before we have two kind of firmwares one is boot from SVC
> > > supporting PXE/NAND/SATA/GRUB booting and the other is boot from HYP
> > > just supporting NAND booting.
> > > This time we updated the firmware and made it boot from HYP
> > supporting
> > > PXE/NAND/SATA/GRUB as we hoped(thanks for Alex's supporting!).
> > >
> > > Since we have to publish a new firmware I think it is a chance to
> > > update the dts of kernel. How do you think about it?
> > 
> > The intention is certainly good. If you expect no further incompatible
> > changes, how about adding another .dts file for this machine that can
> > work with the old firmware?
>
> Would much prefer to have PSCI support instead directly in the firmware.

Makes sense, yes. Is there a timeline for how soon that can be
done? If we can do it soon enough, we could simply skip this intermediate
step but instead keep using the original dts with the old firmware and
the future dts that advertises PSCI support, both in the kernel, but
not a third one with the partially improved interface here.

	Arnd