[edk2-devel] UefiPayloadPkg: Slimboot assign PCIe resource above 4GB. but not supported in UEFIPayload

[Laszlo Ersek]

CC'ing Maurice, Guo, Benjamin

Thanks
Laszlo

On 08/12/20 16:22, Andrey V wrote:
> Hi
> 
> I've encountered a problem after using the patch from SBL (slimboot) https://github.com/slimbootloader/slimbootloader/pull/809
> The SBL supports resource allocation above the 4GB, but it fails on ASSERT [PciHostBridgeDxe] /home/andreyv/edk2/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c(120): Bridge->Mem.Limit < 0x0000000100000000ULL
> 
> The proposed workaround for this is something like in function AdjustRootBridgeResource() of  UefiPayloadPkg\Library\PciHostBridgeLib\PciHostBridgeSupport.c :
> 
> VOID
> 
> AdjustRootBridgeResource (
> 
> IN  PCI_ROOT_BRIDGE_APERTURE *Io,
> 
> IN  PCI_ROOT_BRIDGE_APERTURE *Mem,
> 
> IN  PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
> 
> IN  PCI_ROOT_BRIDGE_APERTURE *PMem,
> 
> IN  PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G
> 
> )
> 
> {
> 
> Io->Base = 0x1000;
> 
> Io->Limit = 0xEFFF;
> 
> Mem ->Base = 0x80000000;
> 
> Mem ->Limit = 0xCFFFFFFF;
> 
> PMem ->Base = MAX_UINT64;
> 
> PMem ->Limit = 0;
> 
> MemAbove4G->Base = MAX_UINT64;
> 
> MemAbove4G->Limit = 0;
> 
> PMemAbove4G->Base = 0x400000000ULL;
> 
> PMemAbove4G->Limit = 0x7FFFFFFFFULL;
> 
> }
> 
> It is working in my board using SBL, but still with a following error
> 
> PciHostBridge driver failed to set EFI_MEMORY_UC to MMIO aperture - Out of Resources.
> 
> Can someone help to resolve this issue ?
> 
> Andrey
> 
> 
> 
> 


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