Implements the MmServicesTableLib library class. The code was derieved from SmmServicesTableLib.
Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Marvin Haeuser <marvin.haeu...@outlook.com> --- MdePkg/Library/MmServicesTableLib/MmServicesTableLib.c | 85 ++++++++++++++++++++ MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf | 41 ++++++++++ MdePkg/Library/MmServicesTableLib/MmServicesTableLib.uni | 21 +++++ MdePkg/MdePkg.dsc | 1 + 4 files changed, 148 insertions(+) diff --git a/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.c b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.c new file mode 100644 index 000000000000..1ecbb044162d --- /dev/null +++ b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.c @@ -0,0 +1,85 @@ +/** @file + MM Services Table Library. + + Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include <PiMm.h> +#include <Protocol/MmBase.h> +#include <Library/MmServicesTableLib.h> +#include <Library/DebugLib.h> + +EFI_MM_SYSTEM_TABLE *gMmst = NULL; + +/** + The constructor function caches the pointer of MM Services Table. + + @param ImageHandle The firmware allocated handle for the EFI image. + @param SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS. + +**/ +EFI_STATUS +EFIAPI +MmServicesTableLibConstructor ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + EFI_STATUS Status; + EFI_MM_BASE_PROTOCOL *InternalMmBase; + + InternalMmBase = NULL; + // + // Retrieve MM Base Protocol, Do not use gBS from UefiBootServicesTableLib on purpose + // to prevent inclusion of gBS, gST, and gImageHandle from MM Drivers unless the + // MM driver explicity declares that dependency. + // + Status = SystemTable->BootServices->LocateProtocol ( + &gEfiMmBaseProtocolGuid, + NULL, + (VOID **)&InternalMmBase + ); + ASSERT_EFI_ERROR (Status); + ASSERT (InternalMmBase != NULL); + + // + // We are in MM, retrieve the pointer to MM System Table + // + InternalMmBase->GetMmstLocation (InternalMmBase, &gMmst); + ASSERT (gMmst != NULL); + + return EFI_SUCCESS; +} + +/** + This function allows the caller to determine if the driver is executing in + Management Mode(MM). + + This function returns TRUE if the driver is executing in MM and FALSE if the + driver is not executing in MM. + + @retval TRUE The driver is executing in Management Mode (MM). + @retval FALSE The driver is not executing in Management Mode (MM). + +**/ +BOOLEAN +EFIAPI +InMm ( + VOID + ) +{ + // + // We are already in MM + // + return TRUE; +} diff --git a/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf new file mode 100644 index 000000000000..fd6b2cbe1f94 --- /dev/null +++ b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf @@ -0,0 +1,41 @@ +## @file +# MM Services Table Library. +# +# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR> +# +# This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php. +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = MmServicesTableLib + MODULE_UNI_FILE = MmServicesTableLib.uni + FILE_GUID = 319D85EE-D290-4B26-BBDA-9D43CF35DF60 + MODULE_TYPE = DXE_SMM_DRIVER + VERSION_STRING = 1.0 + LIBRARY_CLASS = MmServicesTableLib|DXE_SMM_DRIVER + PI_SPECIFICATION_VERSION = 0x0001000A + CONSTRUCTOR = MmServicesTableLibConstructor + +[Sources] + MmServicesTableLib.c + +[Packages] + MdePkg/MdePkg.dec + +[LibraryClasses] + DebugLib + +[Protocols] + gEfiMmBaseProtocolGuid ## CONSUMES + +[Depex] + gEfiMmBaseProtocolGuid + diff --git a/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.uni b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.uni new file mode 100644 index 000000000000..5194cd829051 --- /dev/null +++ b/MdePkg/Library/MmServicesTableLib/MmServicesTableLib.uni @@ -0,0 +1,21 @@ +// /** @file +// MM Services Table Library. +// +// MM Services Table Library. +// +// Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR> +// +// This program and the accompanying materials +// are licensed and made available under the terms and conditions of the BSD License +// which accompanies this distribution. The full text of the license may be found at +// http://opensource.org/licenses/bsd-license.php. +// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "MM Services Table Library" + +#string STR_MODULE_DESCRIPTION #language en-US "MM Services Table Library." + diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc index c7b93d4c8c44..7903638f8dad 100644 --- a/MdePkg/MdePkg.dsc +++ b/MdePkg/MdePkg.dsc @@ -151,6 +151,7 @@ [Components.IA32, Components.X64] MdePkg/Library/SmmIoLibSmmCpuIo2/SmmIoLibSmmCpuIo2.inf MdePkg/Library/SmmPciLibPciRootBridgeIo/SmmPciLibPciRootBridgeIo.inf MdePkg/Library/SmmServicesTableLib/SmmServicesTableLib.inf + MdePkg/Library/MmServicesTableLib/MmServicesTableLib.inf MdePkg/Library/SmmMemoryAllocationLib/SmmMemoryAllocationLib.inf MdePkg/Library/SmmPeriodicSmiLib/SmmPeriodicSmiLib.inf MdePkg/Library/BaseS3BootScriptLibNull/BaseS3BootScriptLibNull.inf -- 2.18.0.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
