[PATCH 2/2] UefiPayloadPkg/Pci: Use the PCIE Base Addr stored in AcpiBoardInfo HOB

["Ni, Ray" <ray.ni@intel.com>]

Today's UefiPayloadPkg always uses 0xE0000000 as the PCIE base address
and ignores the value set in AcpiBoardInfo HOB created by the boot
loader. This makes the payload binary cannot work in environment
where the PCIE base address set by boot loader doesn't equal to
0xE0000000.

The patch enhances UefiPayloadPkg so that the PCIE base address
set by boot loader in the AcpiBoardInfo HOB is used.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
---
 .../PciSegmentInfoLibAcpiBoardInfo.c          | 55 +++++++++++++++++++
 .../PciSegmentInfoLibAcpiBoardInfo.inf        | 36 ++++++++++++
 UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc      |  6 +-
 3 files changed, 95 insertions(+), 2 deletions(-)
 create mode 100644 UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.c
 create mode 100644 UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.inf

diff --git a/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.c b/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.c
new file mode 100644
index 0000000000..28ca4b5799
--- /dev/null
+++ b/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.c
@@ -0,0 +1,55 @@
+/** @file
+  PCI Segment Information Library that returns one segment whose
+  segment base address is retrieved from AcpiBoardInfo HOB.
+
+  Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiDxe.h>
+#include <Guid/AcpiBoardInfoGuid.h>
+
+#include <Library/HobLib.h>
+#include <Library/PciSegmentInfoLib.h>
+#include <Library/DebugLib.h>
+
+STATIC PCI_SEGMENT_INFO mPciSegment0 = {
+  0,  // Segment number
+  0,  // To be fixed later
+  0,  // Start bus number
+  255 // End bus number
+};
+
+/**
+  Return an array of PCI_SEGMENT_INFO holding the segment information.
+
+  Note: The returned array/buffer is owned by callee.
+
+  @param  Count  Return the count of segments.
+
+  @retval A callee owned array holding the segment information.
+**/
+PCI_SEGMENT_INFO *
+GetPciSegmentInfo (
+  UINTN  *Count
+  )
+{
+  EFI_HOB_GUID_TYPE  *GuidHob;
+  ACPI_BOARD_INFO    *AcpiBoardInfo;
+
+  ASSERT (Count != NULL);
+
+  if (mPciSegment0.BaseAddress == 0) {
+    //
+    // Find the acpi board information guid hob
+    //
+    GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
+    ASSERT (GuidHob != NULL);
+
+    AcpiBoardInfo = (ACPI_BOARD_INFO *) GET_GUID_HOB_DATA (GuidHob);
+    mPciSegment0.BaseAddress = AcpiBoardInfo->PcieBaseAddress;
+  }
+  *Count = 1;
+  return &mPciSegment0;
+}
diff --git a/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.inf b/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.inf
new file mode 100644
index 0000000000..ec4dbaaa55
--- /dev/null
+++ b/UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.inf
@@ -0,0 +1,36 @@
+## @file
+#   PCI Segment Information Library that returns one segment whose
+#   segment base address is retrieved from AcpiBoardInfo HOB.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PciSegmentInfoLibAcpiBoardInfo
+  FILE_GUID                      = 0EA82AA2-6C36-4FD5-BC90-FFA3ECB5E0CE
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PciSegmentInfoLib | DXE_DRIVER
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64 EBC
+#
+
+[Sources]
+  PciSegmentInfoLibAcpiBoardInfo.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+  UefiPayloadPkg/UefiPayloadPkg.dec
+
+[LibraryClasses]
+  PcdLib
+  HobLib
+  DebugLib
diff --git a/UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc b/UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc
index 0736cd9954..e114039f82 100644
--- a/UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc
+++ b/UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc
@@ -129,7 +129,8 @@ [LibraryClasses]
   PciLib|MdePkg/Library/BasePciLibPciExpress/BasePciLibPciExpress.inf
   PciExpressLib|MdePkg/Library/BasePciExpressLib/BasePciExpressLib.inf
 !endif
-  PciSegmentLib|MdePkg/Library/BasePciSegmentLibPci/BasePciSegmentLibPci.inf
+  PciSegmentLib|MdePkg/Library/PciSegmentLibSegmentInfo/BasePciSegmentLibSegmentInfo.inf
+  PciSegmentInfoLib|UefiPayloadPkg/Library/PciSegmentInfoLibAcpiBoardInfo/PciSegmentInfoLibAcpiBoardInfo.inf
   PeCoffLib|MdePkg/Library/BasePeCoffLib/BasePeCoffLib.inf
   PeCoffGetEntryPointLib|MdePkg/Library/BasePeCoffGetEntryPointLib/BasePeCoffGetEntryPointLib.inf
   CacheMaintenanceLib|MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
@@ -288,7 +289,6 @@ [PcdsFixedAtBuild]
   gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable|TRUE
   gEfiMdeModulePkgTokenSpaceGuid.PcdBootManagerMenuFile|{ 0x21, 0xaa, 0x2c, 0x46, 0x14, 0x76, 0x03, 0x45, 0x83, 0x6e, 0x8a, 0xb6, 0xf4, 0x66, 0x23, 0x31 }
 
-  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|$(PCIE_BASE)
 
 !if $(SOURCE_DEBUG_ENABLE)
   gEfiSourceLevelDebugPkgTokenSpaceGuid.PcdDebugLoadImageMethod|0x2
@@ -360,6 +360,8 @@ [PcdsDynamicDefault]
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutRow|31
   gEfiMdeModulePkgTokenSpaceGuid.PcdConOutColumn|100
 
+  gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress|$(PCIE_BASE)
+
 ################################################################################
 #
 # Components Section - list of all EDK II Modules needed by this Platform.
-- 
2.26.2.windows.1