Information regarding iMX6 QuadPlus and iMX6 DualLite

[Sascha Hauer]

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

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