[U-Boot] Support of device-tree for PowerPC platform: Query

[Prabhakar Kushwaha]

Dear Bin,

Coming back to x86 example. 

> -----Original Message-----
> From: Bin Meng [mailto:bmeng.cn at gmail.com]
> Sent: Friday, June 29, 2018 7:03 AM
> To: York Sun <york.sun at nxp.com>
> Cc: Simon Glass <sjg at chromium.org>; Prabhakar Kushwaha
> <prabhakar.kushwaha at nxp.com>; u-boot at lists.denx.de
> Subject: Re: [U-Boot] Support of device-tree for PowerPC platform: Query
> 
> Hi York,
> 
> On Thu, Jun 28, 2018 at 11:32 PM, York Sun <york.sun at nxp.com> wrote:
> > On 06/27/2018 10:53 PM, Bin Meng wrote:
> > <snip>
> >>
> >>> Can the DT perhaps go before U-Boot in the flash? We would need a
> >>> way to find it though.
> >>>
> >>
> >> I don't see any issue that DT go after U-Boot in the flash. x86 does
> >> this way, and its reset vector is also the last address of flash.
> >>
> >
> > Big issue. e500 runs from the last address of the flash. We cannot put
> > DT after U-Boot.
> 
> Looks you did not get it. I know e500 reset vector is the last 4 bytes below 4G.
> This is similar to x86. DTB can be put after the u-boot image without reset
> vector. You may check how x86 does this.
> 

I tried to search thing for x86 but did not succeed ☹  

I request you to help me with sample code and boot flow.  
I will try to understand and see how it can help PowerPC. 

--pk