[PATCH v5 20/23] ArmPkg: Add Universal/Smbios/OemMiscLibNull

["Rebecca Cran" <rebecca@nuviainc.com>]

Add a Null implementation of OemMiscLib.

OemMiscLib provides functions that platforms implement to fill in
SMBIOS information for the SmbiosMiscDxe and ProcessSubClassDxe drivers.

Signed-off-by: Rebecca Cran <rebecca@nuviainc.com>
---
 ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLibNull.inf |  31 +++++
 ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c       | 140 ++++++++++++++++++++
 2 files changed, 171 insertions(+)

diff --git a/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLibNull.inf b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLibNull.inf
new file mode 100644
index 000000000000..342290acdb53
--- /dev/null
+++ b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLibNull.inf
@@ -0,0 +1,31 @@
+#/** @file
+#    OemMiscLib.inf
+#
+#    Copyright (c) 2020, NUVIA Inc. All rights reserved.
+#    Copyright (c) 2018, Hisilicon Limited. All rights reserved.
+#    Copyright (c) 2018, Linaro Limited. All rights reserved.
+#
+#    SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 1.29
+  BASE_NAME                      = OemMiscLibNull
+  FILE_GUID                      = e80b8e6b-fffb-4c39-b433-41de67c9d7b8
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = OemMiscLib
+
+[Sources.common]
+  OemMiscLib.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  EmbeddedPkg/EmbeddedPkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  MdePkg/MdePkg.dec
+
+[LibraryClasses]
+  BaseMemoryLib
+
diff --git a/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c
new file mode 100644
index 000000000000..ceee45839746
--- /dev/null
+++ b/ArmPkg/Universal/Smbios/OemMiscLibNull/OemMiscLib.c
@@ -0,0 +1,140 @@
+/** @file
+*  OemMiscLib.c
+*
+*  Copyright (c) 2018, Hisilicon Limited. All rights reserved.
+*  Copyright (c) 2018, Linaro Limited. All rights reserved.
+*
+*  SPDX-License-Identifier: BSD-2-Clause-Patent
+*
+**/
+
+#include <Uefi.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/HiiLib.h>
+
+#include <Library/OemMiscLib.h>
+
+
+/** Gets the CPU frequency of the specified processor.
+
+  @param ProcessorIndex Index of the processor to get the frequency for.
+
+  @return               CPU frequency in Hz
+**/
+EFIAPI
+UINTN
+OemGetCpuFreq (
+  IN UINT8 ProcessorIndex
+  )
+{
+  return 0;
+}
+
+/** Gets information about the specified processor and stores it in
+    the structures provided.
+
+  @param ProcessorIndex  Index of the processor to get the information for.
+  @param ProcessorStatus Processor status.
+  @param ProcessorCharacteristics Processor characteritics.
+  @param MiscProcessorData        Miscellaneous processor information.
+
+  @return  TRUE on success, FALSE on failure.
+**/
+EFIAPI
+BOOLEAN
+OemGetProcessorInformation (
+  IN UINTN ProcessorIndex,
+  IN OUT PROCESSOR_STATUS_DATA *ProcessorStatus,
+  IN OUT PROCESSOR_CHARACTERISTIC_FLAGS *ProcessorCharacteristics,
+  IN OUT MISC_PROCESSOR_DATA *MiscProcessorData
+  )
+{
+  return TRUE;
+}
+
+/** Gets information about the cache at the specified cache level.
+
+  @param ProcessorIndex The processor to get information for.
+  @param CacheLevel The cache level to get information for.
+  @param InstructionOrUnifiedCache Whether the cache is instruction or
+                                   unified, not data.
+  @param SmbiosCacheTable The SMBIOS Type7 cache information structure.
+
+  @return TRUE on success, FALSE on failure.
+**/
+EFIAPI
+BOOLEAN
+OemGetCacheInformation (
+  IN UINT8   ProcessorIndex,
+  IN UINT8   CacheLevel,
+  IN BOOLEAN InstructionOrUnifiedCache,
+  IN OUT SMBIOS_TABLE_TYPE7 *SmbiosCacheTable
+  )
+{
+  return TRUE;
+}
+
+/** Gets the maximum number of sockets supported by the platform.
+
+  @return The maximum number of sockets.
+**/
+EFIAPI
+UINT8
+OemGetProcessorMaxSockets (
+  VOID
+  )
+{
+  return 1;
+}
+
+/** Gets the type of chassis for the system.
+
+  @param ChassisType The type of the chassis.
+
+  @retval EFI_SUCCESS The chassis type was fetched successfully.
+**/
+EFI_STATUS
+EFIAPI
+OemGetChassisType (
+  UINT8 *ChassisType
+  )
+{
+  *ChassisType = MiscChassisTypeUnknown;
+  return EFI_SUCCESS;
+}
+
+/** Returns whether the specified processor is present or not.
+
+  @param ProcessIndex The processor index to check.
+
+  @return TRUE is the processor is present, FALSE otherwise.
+**/
+EFIAPI
+BOOLEAN
+OemIsSocketPresent (
+  IN UINTN ProcessorIndex
+  )
+{
+  if (ProcessorIndex == 0) {
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+/** Updates the HII string for the specified field.
+
+  @param mHiiHandle    The HII handle.
+  @param TokenToUpdate The string to update.
+  @param Offset        The field to get information about.
+**/
+EFIAPI
+VOID
+UpdateSmbiosInfo (
+  IN EFI_HII_HANDLE mHiiHandle,
+  IN EFI_STRING_ID TokenToUpdate,
+  IN SMBIOS_HII_STRING_FIELD Offset
+  )
+{
+
+}
-- 
2.26.2