1 files changed, 60 insertions, 0 deletions
diff --git a/Platform/Intel/MinPlatformPkg/Pci/Library/PciSegmentInfoLibSimple/PciSegmentInfoLibSimple.c b/Platform/Intel/MinPlatformPkg/Pci/Library/PciSegmentInfoLibSimple/PciSegmentInfoLibSimple.c
new file mode 100644
index 0000000000..a7e09f16b8
--- /dev/null
+++ b/Platform/Intel/MinPlatformPkg/Pci/Library/PciSegmentInfoLibSimple/PciSegmentInfoLibSimple.c
@@ -0,0 +1,60 @@
+/** @file
+  Default PCI Segment Information Library that returns one segment whose
+  segment base address equals to PcdPciExpressBaseAddress.
+
+  Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials are
+  licensed and made available under the terms and conditions of
+  the BSD License which accompanies this distribution.  The full
+  text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <Base.h>
+#include <Library/PciSegmentInfoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/HobLib.h>
+#include <Library/PcdLib.h>
+
+#define PCI_SEGMENT_INFO_HOB_GUID { \
+  0x6eab7169, 0x9b21, 0x450e, 0x99, 0xe8, 0xe, 0xb1, 0x1b, 0x7d, 0xfe, 0xcb \
+  }
+
+EFI_GUID  mPciSegmentInfoHobGuid = PCI_SEGMENT_INFO_HOB_GUID;
+
+/**
+  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 *
+EFIAPI
+GetPciSegmentInfo (
+  OUT UINTN  *Count
+  )
+{
+  VOID              *Hob;
+  PCI_SEGMENT_INFO  *PciSegmentInfo;
+
+  *Count = 1;
+  Hob = GetFirstGuidHob (&mPciSegmentInfoHobGuid);
+  if (Hob != NULL) {
+    PciSegmentInfo = GET_GUID_HOB_DATA(Hob);
+  } else {
+    PciSegmentInfo = BuildGuidHob (&mPciSegmentInfoHobGuid, sizeof(PCI_SEGMENT_INFO));
+    ASSERT(PciSegmentInfo != NULL);
+    PciSegmentInfo->SegmentNumber = 0;
+    PciSegmentInfo->BaseAddress = PcdGet64(PcdPciExpressBaseAddress);
+    PciSegmentInfo->StartBusNumber = 0;
+    PciSegmentInfo->EndBusNumber = 0xFF;
+  }
+  return PciSegmentInfo;
+}