Reviewed-by: Chasel Chiu <chasel.chiu@intel.com<mailto:chasel.chiu@intel.com>>

________________________________
From: Kumar, Chandana C <chandana.c.kumar@intel.com>
Sent: Friday, April 24, 2020 1:19 PM
To: devel@edk2.groups.io <devel@edk2.groups.io>
Cc: Chaganty, Rangasai V <rangasai.v.chaganty@intel.com>; Chiu, Chasel <chasel.chiu@intel.com>; Desimone, Nathaniel L <nathaniel.l.desimone@intel.com>
Subject: [edk2-platforms: PATCH V1] MinPlatformPkg/PlatformInitPei: Create Library Instance of ReportCpuHobLib.

Create an Library instance of ReportCpuHobLib from PlatformInitPei driver.
PA bits reported can be overriden using Library instance in Platform.

Initial Patch to create ReportCpuHobLib.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2674

Signed-off-by: Chandana Kumar <chandana.c.kumar@intel.com>
Cc: Sai Chaganty <rangasai.v.chaganty@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
---
 Platform/Intel/MinPlatformPkg/Include/Library/ReportCpuHobLib.h                        | 23 +++++++++++++++++++++++
 Platform/Intel/MinPlatformPkg/MinPlatformPkg.dec                                       |  6 ++++--
 Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.c   | 32 ++++++++++++++++++++++++++++++++
 Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.inf | 27 +++++++++++++++++++++++++++
 4 files changed, 86 insertions(+), 2 deletions(-)

diff --git a/Platform/Intel/MinPlatformPkg/Include/Library/ReportCpuHobLib.h b/Platform/Intel/MinPlatformPkg/Include/Library/ReportCpuHobLib.h
new file mode 100644
index 0000000000..337e17f154
--- /dev/null
+++ b/Platform/Intel/MinPlatformPkg/Include/Library/ReportCpuHobLib.h
@@ -0,0 +1,23 @@
+/** @file
+
+  Report CPU HOB library
+
+  This library report the CPU HOB with Physical Address bits.
+
+Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _REPORT_CPU_HOB_LIB_H_
+#define _REPORT_CPU_HOB_LIB_H_
+
+#include <PiPei.h>
+#include <Uefi.h>
+
+VOID
+ReportCpuHob (
+  VOID
+  );
+
+#endif
diff --git a/Platform/Intel/MinPlatformPkg/MinPlatformPkg.dec b/Platform/Intel/MinPlatformPkg/MinPlatformPkg.dec
index 5bec4eee3a..7ef189dac8 100644
--- a/Platform/Intel/MinPlatformPkg/MinPlatformPkg.dec
+++ b/Platform/Intel/MinPlatformPkg/MinPlatformPkg.dec
@@ -6,7 +6,7 @@
 # INF files to generate AutoGen.c and AutoGen.h files
 # for the build infrastructure.
 #
-# Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2017 - 2020, Intel Corporation. All rights reserved.<BR>
 #
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -73,7 +73,9 @@
   TestPointLib|Include/Library/TestPointLib.h
   TestPointCheckLib|Include/Library/TestPointCheckLib.h

-SetCacheMtrrLib|Include/Library/SetCacheMtrrLib.h
+  SetCacheMtrrLib|Include/Library/SetCacheMtrrLib.h
+
+  ReportCpuHobLib|Include/Library/ReportCpuHobLib.h

 [PcdsFixedAtBuild, PcdsPatchableInModule]

diff --git a/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.c b/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.c
new file mode 100644
index 0000000000..aa2565343c
--- /dev/null
+++ b/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.c
@@ -0,0 +1,32 @@
+/** @file
+  Source code file for Report CPU HOB library.
+
+Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/HobLib.h>
+
+VOID
+ReportCpuHob (
+  VOID
+  )
+{
+  UINT8                         PhysicalAddressBits;
+  UINT32                        RegEax;
+
+  AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);
+  if (RegEax >= 0x80000008) {
+    AsmCpuid (0x80000008, &RegEax, NULL, NULL, NULL);
+    PhysicalAddressBits = (UINT8) RegEax;
+  } else {
+    PhysicalAddressBits = 36;
+  }
+
+  ///
+  /// Create a CPU hand-off information
+  ///
+  BuildCpuHob (PhysicalAddressBits, 16);
+}
diff --git a/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.inf b/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.inf
new file mode 100644
index 0000000000..ae6ec901a1
--- /dev/null
+++ b/Platform/Intel/MinPlatformPkg/PlatformInit/Library/ReportCpuHobLib/ReportCpuHobLib.inf
@@ -0,0 +1,27 @@
+### @file
+# Component information file for the Report CPU HOB library.
+#
+# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+###
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = ReportCpuHobLib
+  FILE_GUID                      = F19AA754-CE24-448D-B755-1F939B00C25D
+  VERSION_STRING                 = 1.0
+  MODULE_TYPE                    = BASE
+  LIBRARY_CLASS                  = ReportCpuHobLib
+
+[LibraryClasses]
+  BaseLib
+  HobLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  MinPlatformPkg/MinPlatformPkg.dec
+
+[Sources]
+  PeiReportFvLib.c
--
2.16.2.windows.1