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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: barebox@lists.infradead.org,
	gianluca <gianlucarenzi@eurekelettronica.it>
Subject: Re: Information regarding iMX6 QuadPlus and iMX6 DualLite
Date: Thu, 23 Mar 2017 19:47:42 +0100	[thread overview]
Message-ID: <20170323184742.k2wspb2n3li75kvu@pengutronix.de> (raw)
In-Reply-To: <1490282153.29056.39.camel@pengutronix.de>

Hi,

On Thu, Mar 23, 2017 at 04:15:53PM +0100, Lucas Stach wrote:
> Hi,
> 
> Am Donnerstag, den 23.03.2017, 16:04 +0100 schrieb gianluca:
> > But I do not found any switch between choosing one Soc or another.
> > Where is done the startup entry?
> 
> If you want a single binary, you need build a 2 stage barebox. First
> stage needs to be loaded into SRAM, then you can look at which board you
> are running and do the specific DRAM setup. Then you can load the bigger
> 2nd stage into DRAM, where you again need to look at the board you are
> running at and select the correct devicetree for barebox to use.

For an example how this can be done look at the wandboard support:
arch/arm/boards/technexion-wandboard/lowlevel.c
The wandboard doesn't have QuadPLus support, but the principle is the
same. It comes with different device trees and DRAMs. Both are selected
depending on the SoC type.

Sascha

-- 
Pengutronix e.K.                           |                             |
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      parent reply	other threads:[~2017-03-23 18:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-23 15:04 gianluca
2017-03-23 15:15 ` Lucas Stach
2017-03-23 16:56   ` gianluca
2017-03-23 16:59     ` Lucas Stach
2017-03-23 17:03       ` gianluca
2017-03-23 18:47   ` Sascha Hauer [this message]

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