Hi,<br /><br />When booting&nbsp;UefiPayloadPkg in my system (x86 Denverton SoC, coreboot) an assert error is generated in the&nbsp;PciHostBridgeDxe driver.<br />In the InitializePciHostBridge() function if all ASSERT's are ignored (by commenting out the code) the boot can move further on until it reaches the UEFI Shell.<br />Any clues?<br /><br />
<div>Loading driver at 0x0007EE61000 EntryPoint=0x0007EE6CF52 PciHostBridgeDxe.efi</div>
<div>InstallProtocolInterface: BC62157E-3E33-4FEC-9920-2D3B36D750DF 7EF1F698</div>
<div>ProtectUefiImageCommon - 0x7EF1F140</div>
<div>&nbsp; - 0x000000007EE61000 - 0x0000000000013000</div>
<div>SetUefiImageMemoryAttributes - 0x000000007EE61000 - 0x0000000000001000 (0x0000000000004008)</div>
<div>SetUefiImageMemoryAttributes - 0x000000007EE62000 - 0x0000000000010000 (0x0000000000020008)</div>
<div>SetUefiImageMemoryAttributes - 0x000000007EE72000 - 0x0000000000002000 (0x0000000000004008)</div>
<div>PROGRESS CODE: V03040002 I0</div>
<div>InitRootBridge: populated root bus 0, with room for 7 subordinate bus(es)</div>
<div>RootBridge: PciRoot(0x0)</div>
<div>&nbsp; Support/Attr: 10003 / 10003</div>
<div>&nbsp; &nbsp; DmaAbove4G: No</div>
<div>NoExtConfSpace: No</div>
<div>&nbsp; &nbsp; &nbsp;AllocAttr: 0 ()</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Bus: 0 - 7 Translation=0</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Io: 0 - 4FFF Translation=0</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Mem: D4000000 - FE0FFFFF Translation=0</div>
<div>&nbsp; &nbsp; MemAbove4G: FFFFFFFFFFFFFFFF - 0 Translation=0</div>
<div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; PMem: FFFFFFFFFFFFFFFF - 0 Translation=0</div>
<div>&nbsp; &nbsp;PMemAbove4G: FFFFFFFFFFFFFFFF - 0 Translation=0</div>
<div>PciHostBridgeDxe: IntersectMemoryDescriptor: desc [E0000000, F0000000) type 1 cap 870000000002600F conflicts with aperture [D4000000, FE100000) cap 1</div>
<div>&nbsp;</div>
<div>ASSERT_EFI_ERROR (Status = Invalid Parameter)</div>
<div>ASSERT [PciHostBridgeDxe] /home/lxuser/occ/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c(488): !EFI_ERROR (Status)<br /><br />Thanks,<br />Sumo<br /><br /></div>