[Macchiato] DRAM/PCIe remapping

[Jeremy Linton]

On 08/09/2017 11:09 AM, Ard Biesheuvel wrote:
> On 9 August 2017 at 17:07, Jeremy Linton <jeremy.linton at arm.com> wrote:
>> 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?


?! Then why not use "pci-host-ecam-generic"?