[U-Boot] [RFC] armv8: layerscape: Add support of u-boot device tree fix-up

[Scott Wood]

On Tue, 2016-02-23 at 04:09 +0000, Prabhakar Kushwaha wrote:
> > -----Original Message-----
> > From: Scott Wood [mailto:oss at buserror.net]
> > Sent: Tuesday, February 23, 2016 6:52 AM
> > To: Prabhakar Kushwaha <prabhakar.kushwaha at nxp.com>; u-
> > boot at lists.denx.de
> > Cc: york sun <york.sun at nxp.com>; Priyanka Jain <priyanka.jain at nxp.com>
> > Subject: Re: [RFC] armv8: layerscape: Add support of u-boot device tree
> > fix-
> > up
> > 
> > Where do you check that the device tree fits in OCRAM?  What about when
> > SPL is occupying OCRAM?  Does the device tree get used with SPL (I don't
> > think we were using FDT control at all the last time I worked with SPL on
> > these chips)?
> > 
> 
> I checked ls2085ardb dtb size in Linux. It is ~30K. So from 0xfff0 to 20000
> there is enough space.
> 
> For SPL. Assumption is SPL never use dts. It will only be used by u-boot. 
> Once control is transferred to u-boot, things work as it is like NOR boot. 

I don't think that's a good assumption, given that I just saw a patch posted
regarding SPL_OF_CONTROL.

-Scott