[meta-xilinx] Wrong DRAM set for custom board using FSBL + u-boot?

[Manjukumar Harthikote Matha]

> -----Original Message-----
> From: Giordon Stark [mailto:kratsg at gmail.com]
> Sent: Wednesday, December 06, 2017 12:16 PM
> To: Manjukumar Harthikote Matha <MANJUKUM at xilinx.com>
> Cc: meta-xilinx at yoctoproject.org; Tang, Shaochun <stang at bnl.gov>
> Subject: Re: [meta-xilinx] Wrong DRAM set for custom board using FSBL + u-boot?
> 
> Hi Manju,
> 
> The generated device tree section (that I think is relevant) is here:
> https://github.com/kratsg/meta-
> l1calo/blob/master/conf/machine/boards/gfex/prototype3/system-top.dts#L27-L30
> 
> memory {
> device_type = "memory";
> reg = <0x0 0x0 0x0 0x80000000>, <0x00000008 0x00000000 0x0 0x80000000>; };
> 
> 
Isn't this 4G? 2 banks for 2G each?

Thanks,
Manju

> which I think looks correct and specifies from 0x0 -> 0x7FFFFFFF.
> 
> Giordon
> 
> On Wed, Dec 6, 2017 at 2:14 PM Manjukumar Harthikote Matha
> <MANJUKUM at xilinx.com <mailto:MANJUKUM at xilinx.com> > wrote:
> 
> 
> 
> 
> 	> -----Original Message-----
> 	> From: meta-xilinx-bounces at yoctoproject.org <mailto:meta-xilinx-
> bounces at yoctoproject.org>  [mailto:meta-xilinx- <mailto:meta-xilinx->
> 	> bounces at yoctoproject.org <mailto:bounces at yoctoproject.org> ] On
> Behalf Of Giordon Stark
> 	> Sent: Wednesday, December 06, 2017 9:26 AM
> 	> To: meta-xilinx at yoctoproject.org <mailto:meta-xilinx at yoctoproject.org>
> 	> Cc: Tang, Shaochun <stang at bnl.gov <mailto:stang at bnl.gov> >
> 	> Subject: [meta-xilinx] Wrong DRAM set for custom board using FSBL + u-
> boot?
> 	>
> 	> Hi all,
> 	>
> 	> The board I'm using is defined here: https://github.com/kratsg/meta-
> 	> l1calo/blob/master/conf/machine/gfex-prototype3.conf but I'm noticing
> that the
> 	> DRAM reported by U-Boot is set to 4 GiB. This would be correct for
> ZCU102, but we
> 	> have 16 GiB DRAM for our custom (v3) board.
> 	>
> 	> Where is this setting configured? Is it part of the device tree? If so, why is
> the device-
> 	> tree-xlnx repository not exporting this correctly?
> 	>
> 
> 	Does the device-tree generated indicate it as 16G?  If your HDF has correct
> settings for 16G, DTG should output correct fragment in the dts/dtsi files. You should
> compile the u-boot code with this dtb.
> 
> 	> Thanks!
> 	>
> 	> Giordon
>