[edk2-platforms][PATCH V2 3/3] BoardModulePkg/FirmwareBootMediaInfoPei: Add module

["Kubacki, Michael A" <michael.a.kubacki@intel.com>]

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2229

Adds a new module that is responsible for publishing the boot
media device information that will be used in the boot flow for
system initialization decisions dependent upon firmware boot
media.

The module depends on a library class to implement the board-
specific details to get the firmware boot media device. This
allows the module to remain consistent in its responsibility
across implementations and the details to be easily substituted.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael Kubacki <michael.a.kubacki@intel.com>
---
 Platform/Intel/BoardModulePkg/BoardModulePkg.dsc                                 |  3 +
 Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.inf | 46 ++++++++++++
 Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.c   | 76 ++++++++++++++++++++
 3 files changed, 125 insertions(+)

diff --git a/Platform/Intel/BoardModulePkg/BoardModulePkg.dsc b/Platform/Intel/BoardModulePkg/BoardModulePkg.dsc
index 3d605cf876..5ec68ceebf 100644
--- a/Platform/Intel/BoardModulePkg/BoardModulePkg.dsc
+++ b/Platform/Intel/BoardModulePkg/BoardModulePkg.dsc
@@ -31,9 +31,11 @@
   DxeServicesLib|MdePkg/Library/DxeServicesLib/DxeServicesLib.inf
   PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf
   DebugLib|MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
+  PeimEntryPoint|MdePkg/Library/PeimEntryPoint/PeimEntryPoint.inf
 
 [LibraryClasses.common.PEIM]
   FirmwareBootMediaLib|IntelSiliconPkg/Library/PeiDxeSmmBootMediaLib/PeiFirmwareBootMediaLib.inf
+  FirmwareBootMediaInfoLib|BoardModulePkg/Library/PeiFirmwareBootMediaInfoLib/PeiFirmwareBootMediaInfoLib.inf
   HobLib|MdePkg/Library/PeiHobLib/PeiHobLib.inf
   MemoryAllocationLib|MdePkg/Library/PeiMemoryAllocationLib/PeiMemoryAllocationLib.inf
 
@@ -73,6 +75,7 @@
 ###################################################################################################
 
 [Components]
+  BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.inf
   BoardModulePkg/Library/CmosAccessLib/CmosAccessLib.inf
   BoardModulePkg/Library/PlatformCmosAccessLibNull/PlatformCmosAccessLibNull.inf
 
diff --git a/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.inf b/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.inf
new file mode 100644
index 0000000000..a81932f2a1
--- /dev/null
+++ b/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.inf
@@ -0,0 +1,46 @@
+## @file
+# Firmware Boot Media Info Module
+#
+# This module publishes firmware boot media device information used in the boot flow for system initialization
+# decisions dependent upon the firmware boot media.
+#
+# This module depends upon a library instance to actually perform firmware boot media device detection since the
+# detection mechanism will vary across systems. In many cases, the media type may simply be set to a single firmware
+# boot media device with no run-time logic required. In any case, this module should dispatch as early as possible in
+# the system boot flow so the firmware boot media information is available for other modules. If any dependencies are
+# required to dynamically determine the firmware boot media device, those should be in the DEPEX section of the active
+# FirmwareBootMediaInfoLib such that this module will dispatch once those dependencies are satisfied.
+#
+# Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION       = 0x00010017
+  BASE_NAME         = FirmwareBootMediaInfoPei
+  FILE_GUID         = A8F14FA9-FC88-45F4-A622-F06E6C56E632
+  VERSION_STRING    = 1.0
+  MODULE_TYPE       = PEIM
+  ENTRY_POINT       = FirmwareBootMediaInfoPeiEntry
+
+[LibraryClasses]
+  BaseLib
+  DebugLib
+  FirmwareBootMediaLib
+  FirmwareBootMediaInfoLib
+  HobLib
+  PeimEntryPoint
+  PeiServicesLib
+
+[Packages]
+  MdePkg/MdePkg.dec
+  IntelSiliconPkg/IntelSiliconPkg.dec
+  BoardModulePkg/BoardModulePkg.dec
+
+[Sources]
+  FirmwareBootMediaInfoPei.c
+
+[Depex]
+  TRUE
diff --git a/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.c b/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.c
new file mode 100644
index 0000000000..7a71071053
--- /dev/null
+++ b/Platform/Intel/BoardModulePkg/FirmwareBootMediaInfo/FirmwareBootMediaInfoPei.c
@@ -0,0 +1,76 @@
+/** @file
+  Firmware Boot Media Info Module
+
+  This module publishes firmware boot media device information used in the boot flow for system initialization
+  decisions dependent upon the firmware boot media.
+
+  This module depends upon a library instance to actually perform firmware boot media device detection since the
+  detection mechanism will vary across systems. In many cases, the media type may simply be set to a single firmware
+  boot media device with no run-time logic required. In any case, this module should dispatch as early as possible in
+  the system boot flow so the firmware boot media information is available for other modules. If any dependencies are
+  required to dynamically determine the firmware boot media device, those should be in the DEPEX section of the active
+  FirmwareBootMediaInfoLib such that this module will dispatch once those dependencies are satisfied.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/FirmwareBootMediaLib.h>
+#include <Library/FirmwareBootMediaInfoLib.h>
+#include <Library/HobLib.h>
+
+/**
+  Produces a gFirmwareBootMediaHobGuid HOB instance.
+
+  @retval     EFI_SUCCESS     The firmware boot media HOB was produced successfully.
+  @retval     EFI_NOT_FOUND   The firmware boot media device information could not be found to produce the
+                              the firmware boot media HOB.
+**/
+EFI_STATUS
+EFIAPI
+ProduceFirmwareBootMediaHob (
+  VOID
+  )
+{
+  FW_BOOT_MEDIA_HOB_DATA FwBootMediaHobData;
+
+  FwBootMediaHobData.BootMedia = IdentifyFirmwareBootMediaType ();
+  if (FwBootMediaHobData.BootMedia == FwBootMediaMax) {
+    return EFI_NOT_FOUND;
+  }
+
+  BuildGuidDataHob (
+    &gFirmwareBootMediaHobGuid,
+    &FwBootMediaHobData,
+    sizeof (FW_BOOT_MEDIA_HOB_DATA)
+    );
+
+  return EFI_SUCCESS;
+}
+
+/**
+  Attempts to publish the firmware boot media HOB.
+
+  @param  FileHandle  Handle of the file being invoked.
+  @param  PeiServices Describes the list of possible PEI Services.
+
+  @retval EFI_SUCCESS   Produce the BootMedia Hob successfully.
+
+**/
+EFI_STATUS
+EFIAPI
+FirmwareBootMediaInfoPeiEntry (
+  IN       EFI_PEI_FILE_HANDLE  FileHandle,
+  IN CONST EFI_PEI_SERVICES     **PeiServices
+  )
+{
+  EFI_STATUS  Status;
+
+  Status = ProduceFirmwareBootMediaHob ();
+  ASSERT_EFI_ERROR (Status);
+
+  return Status;
+}
-- 
2.16.2.windows.1