[edk2/master PATCH DxeIplHandoffLib v1] MdePkg/DxeIplHandoffLibNullLib: Abstract DxeIpl

["Abner Chang" <abner.chang@hpe.com>]

BZ:2583:
https://bugzilla.tianocore.org/show_bug.cgi?id=2583

Current DxeIpl has bindings for different processor
architectures, this results in MdeModulePkg has the
dependence with processor architecture packages such as
ArmPkg or RiscVPkg. This also leads CI testing to error
during package dependency check. Provide a default
DxeIplHandoff library to abstract processor
architecture from DxeIpl driver, platform can provide
its own library instance for the processor architecture-
specific implementation.

Signed-off-by: Abner Chang <abner.chang@hpe.com>

Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Gilbert Chen <gilbert.chen@hpe.com>
---
 MdeModulePkg/MdeModulePkg.dsc                 |  2 ++
 .../DxeIplHandoffLibNull.inf                  | 30 +++++++++++++++++
 .../DxeIplHandoffLibNull.c                    | 33 +++++++++++++++++++
 .../DxeIplHandoffLibNull.uni                  | 14 ++++++++
 4 files changed, 79 insertions(+)
 create mode 100644 MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.inf
 create mode 100644 MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.c
 create mode 100644 MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.uni

diff --git a/MdeModulePkg/MdeModulePkg.dsc b/MdeModulePkg/MdeModulePkg.dsc
index f7dbb27ce2..6eb922dfaa 100644
--- a/MdeModulePkg/MdeModulePkg.dsc
+++ b/MdeModulePkg/MdeModulePkg.dsc
@@ -3,6 +3,7 @@
 #
 # (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>
 # Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
 #
 #    SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -321,6 +322,7 @@
   MdeModulePkg/Library/BaseBmpSupportLib/BaseBmpSupportLib.inf
   MdeModulePkg/Library/DisplayUpdateProgressLibGraphics/DisplayUpdateProgressLibGraphics.inf
   MdeModulePkg/Library/DisplayUpdateProgressLibText/DisplayUpdateProgressLibText.inf
+  MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.inf
 
   MdeModulePkg/Universal/BdsDxe/BdsDxe.inf
   MdeModulePkg/Application/BootManagerMenuApp/BootManagerMenuApp.inf
diff --git a/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.inf b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.inf
new file mode 100644
index 0000000000..b7210656b7
--- /dev/null
+++ b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.inf
@@ -0,0 +1,30 @@
+## @file
+#  Null DXE IPL handoff to DXE Core Library instance.
+#
+#  Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x0001001b
+  BASE_NAME                      = DxeIplHandoffLibNull
+  MODULE_UNI_FILE                = DxeIplHandoffLibNull.uni
+  FILE_GUID                      = 5c18812d-3684-4093-bc75-fc846a595353
+  MODULE_TYPE                    = BASE
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = DxeIplHandoffLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = RISCV64
+#
+
+[Sources]
+  DxeIplHandoffLibNull.c
+
+[Packages]
+  MdePkg/MdePkg.dec
+
diff --git a/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.c b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.c
new file mode 100644
index 0000000000..c83922cb6e
--- /dev/null
+++ b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.c
@@ -0,0 +1,33 @@
+/** @file
+  NULL instance of DXE IPL handoff to DXE Core Library.
+
+  Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <PiPei.h>
+#include <Library/DebugLib.h>
+
+/**
+   Transfers control to DxeCore.
+
+   This function performs a CPU architecture specific operations to execute
+   the entry point of DxeCore with the parameters of HobList.
+   It also installs EFI_END_OF_PEI_PPI to signal the end of PEI phase.
+
+   @param DxeCoreEntryPoint         The entry point of DxeCore.
+   @param HobList                   The start of HobList passed to DxeCore.
+
+**/
+VOID
+HandOffToDxeCore (
+  IN EFI_PHYSICAL_ADDRESS   DxeCoreEntryPoint,
+  IN EFI_PEI_HOB_POINTERS   HobList
+  )
+{
+  DEBUG ((DEBUG_INFO, "No implementation of DXE IPL handoff to DXE Core library.\r\n"));
+  ASSERT (FALSE);
+}
+
diff --git a/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.uni b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.uni
new file mode 100644
index 0000000000..5a8973d6e5
--- /dev/null
+++ b/MdeModulePkg/Library/DxeIplHandoffLibNull/DxeIplHandoffLibNull.uni
@@ -0,0 +1,14 @@
+// /** @file
+// Null DXE IPL handoff to DXE Core Library instance.
+//
+// Copyright (c) 2020, Hewlett Packard Enterprise Development LP. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+// **/
+
+
+#string STR_MODULE_ABSTRACT             #language en-US "Null DXE IPL handoff to DXE Core Library instance."
+
+#string STR_MODULE_DESCRIPTION          #language en-US "Null DXE IPL handoff to DXE Core Library instance."
+
-- 
2.25.0