[U-Boot] [PATCH 2/2] boards: ls2080: Disable fdt copying by default

[Scott Wood]

On Tue, 2016-03-01 at 03:55 +0000, Prabhakar Kushwaha wrote:
> > -----Original Message-----
> > From: Scott Wood [mailto:oss at buserror.net]
> > Sent: Tuesday, March 01, 2016 7:13 AM
> > To: york sun <york.sun at nxp.com>; U-Boot Mailing List <u-
> > boot at lists.denx.de>
> > Cc: Prabhakar Kushwaha <prabhakar at freescale.com>
> > Subject: Re: [U-Boot] [PATCH 2/2] boards: ls2080: Disable fdt copying by
> > default
> > 
> > On Tue, 2016-03-01 at 00:08 +0000, york sun wrote:
> > > Sorry for top posting. I am on outlook web access.
> > > 
> > > There may be some limitation on fdt relocation. Without setting
> > > fdt_high, u -boot relocates the device tree toward the end of useable
> > > memory. I haven't got a chance to debug why it doesn't work.
> > > 
> > > This patch is to disable the relocation by default. A magic number
> > > 0xa0000000 doesn't make much sense here.
> > 
> > I agree, if the number is arbitrary.  But if Linux has a limitation, as it
> > does on
> > arm32, then it should be expressed here.
> > 
> 
> Just for understanding purpose.  
> u-boot in case of arm32 can only access memory in 32 bit range. 
>  Will there be possibility of u-boot copying dtb in any memory not
> accessible to core. 

No, but that is not the only limitation that needs to be honored regarding
device tree and initrd placement.

-Scott