Re: [edk2-platforms: PATCH V1] MinPlatformPkg/PlatformInitPei: Create Library Instance of ReportCpuHobLib.

["Chaganty, Rangasai V" <rangasai.v.chaganty@intel.com>]

Reviewed-by: Sai Chaganty <rangasai.v.chaganty@intel.com>

-----Original Message-----
From: Kumar, Chandana C <chandana.c.kumar@intel.com> 
Sent: Wednesday, April 29, 2020 10:52 PM
To: 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.

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..a1830d4320
--- /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]
+  ReportCpuHobLib.c
--
2.16.2.windows.1