[Macchiato] DRAM/PCIe remapping

[Ard Biesheuvel]

On 9 August 2017 at 17:07, Jeremy Linton <jeremy.linton at arm.com> wrote:
> Hi,
>
> On 08/09/2017 10:00 AM, Matt Sealey wrote:
>>
>> Hi guys,
>>
>> Apologies for not replying to a current thread, I just subscribed..
>>
>> Further to the discussion on PCIe graphics cards and DRAM, I've been
>> struggling here to
>> get the board to recognize that I was a little cash-happy and got the 16GB
>> package from
>> SolidRun. I've spent a couple months being consummately disappointed in
>> only being able
>> to reference 4GB from UEFI and Linux.
>>
>> Ard's DRAM/PCIe remap patch seems to work relatively well
>> but the existing code doesn't
>> map enough memory in the MMIO32 space for me; if I have a card that has
>> 2GB on it,
>
>
> The usual place to map large PCIe BARs is in the 64bit MMIO ranges. Does
> this board not support a 64bit MMIO window?
>

Ah I guess this is due to the crappy Synopsys driver in Linux not
supporting MMIO64 windows?