Support arbitrary platforms with different or even no MMCONF space.
Fixes crash on platforms not exposing 256 buses.

Tested on:
* AMD Stoney Ridge

Branch: https://github.com/9elements/edk2-1/tree/UefiPayloadPkg-MMCONF
PR: https://github.com/tianocore/edk2/pull/885

v5:
* MdePkg
- support variable size MMCONF in all PciExpressLibs
- use (UINTX)-1 as return values for invalid Pci addresses

v4:
* MdePkg: undo default PcdPciExpressBaseSize off by one

v3:
* split patch 2 by package
* MdePkg/PciExpress:
- PciExpressXX add return value specification
- Undo remove of ASSERT()
- PcdPciExpressBaseSize() correct function header
- correct return value types

v2:
* rebased with regards to commit 3900a63e3a1b9ba9a4105bedead7b986188cec2c
* add MdePkg Maintainer

Marcello Sylvester Bauer (2):
MdePkg: PciExpressLib support variable size MMCONF
UefiPayloadPkg: Support variable size MMCONF space

Patrick Rudolph (1):
UefiPayloadPkg: Store the size of the MMCONF window

MdePkg/MdePkg.dec | 4 +
UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc | 1 +
MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf | 6 +-
MdePkg/Library/DxeRuntimePciExpressLib/DxeRuntimePciExpressLib.inf | 1 +
MdePkg/Library/SmmPciExpressLib/SmmPciExpressLib.inf | 1 +
UefiPayloadPkg/BlSupportDxe/BlSupportDxe.inf | 1 +
MdePkg/Include/Library/PciExpressLib.h | 5 +-
UefiPayloadPkg/Include/Guid/AcpiBoardInfoGuid.h | 1 +
MdePkg/Library/BasePciExpressLib/PciExpressLib.c | 216 ++++++++++++++---
MdePkg/Library/DxeRuntimePciExpressLib/PciExpressLib.c | 247 ++++++++++++++++----
MdePkg/Library/SmmPciExpressLib/PciExpressLib.c | 218 ++++++++++++++---
UefiPayloadPkg/BlSupportDxe/BlSupportDxe.c | 4 +-
UefiPayloadPkg/BlSupportPei/BlSupportPei.c | 3 +
13 files changed, 593 insertions(+), 115 deletions(-)

--
2.28.0