[U-Boot] TLB mapping for pcie mem space for fsl corenet processors
Scott Wood
scottwood at freescale.com
Mon Jul 8 21:07:48 CEST 2013
On 07/04/2013 01:13:29 PM, Sughosh Ganu wrote:
> hi,
> The tlb entries for the pcie mem space for the corenet SoC's is done
> for 1.5GiB but certain boards use all the 4 pcie controller
> instantiations, and each controller is assigned 512MiB size in the
> config files. Should the tlb entries not map 2GiB space as against
> 1.5GiB. Am i missing something. Thanks.
You'll need to either use a smaller mapping for one or more PCIe
controllers, or reduce the amount of RAM you map. There's no room to
map 2GiB of RAM, 2GiB of PCIe, *and* CCSR, localbus, etc.
Do you really need to access devices on all four controllers from
within U-Boot?
-Scott
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