To resuse some the libraries in both MM and non-MM mode, a mechanism to determine the execution mode is required, i.e, in MM or non-MM. Add a new library for use by non-MM code to determine the current execution mode.
Change-Id: If0ec88f4691b2b059c770faefed59b2dc29312da Signed-off-by: Jagadeesh Ujja <[email protected]> Signed-off-by: Thomas Abraham <[email protected]> --- .../Include/Library/StandaloneMmRuntimeDxe.h | 39 +++++++++++++++++ .../StandaloneMmRuntimeDxe.c | 36 ++++++++++++++++ .../StandaloneMmRuntimeDxe.inf | 43 +++++++++++++++++++ 3 files changed, 118 insertions(+) create mode 100644 MdeModulePkg/Include/Library/StandaloneMmRuntimeDxe.h create mode 100644 MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.c create mode 100644 MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.inf diff --git a/MdeModulePkg/Include/Library/StandaloneMmRuntimeDxe.h b/MdeModulePkg/Include/Library/StandaloneMmRuntimeDxe.h new file mode 100644 index 0000000000..e4a61f6a7b --- /dev/null +++ b/MdeModulePkg/Include/Library/StandaloneMmRuntimeDxe.h @@ -0,0 +1,39 @@ +/** @file + Provides a service to retrieve a pointer to the Standalone MM Services Table. + Only available to Standalone MM module types. + +Copyright (c) 2018, ARM Limited. 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. + +**/ + +#ifndef __STANDALONEMM_RUNTIME_DXE_LIB_H__ +#define __STANDALONEMM_RUNTIME_DXE_LIB_H__ + +#include <PiDxe.h> + +/** + This function allows the caller to determine if the driver is executing in + Standalone Management Mode(SMM). + + This function returns TRUE if the driver is executing in SMM and FALSE if the + driver is not executing in SMM. + + @retval TRUE The driver is executing in Standalone Management Mode (SMM). + @retval FALSE The driver is not executing in Standalone Management Mode (SMM). + +**/ +BOOLEAN +EFIAPI +InMm ( + VOID + ); + +#endif diff --git a/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.c b/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.c new file mode 100644 index 0000000000..61ef59a19a --- /dev/null +++ b/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.c @@ -0,0 +1,36 @@ +/** @file + StandaloneMmRuntimeDxe Library. + + Copyright (c) 2018, ARM Limited. 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 <PiDxe.h> + +/** + This function allows the caller to determine if the driver is executing in + Standalone Management Mode(SMM). + + This function returns TRUE if the driver is executing in SMM and FALSE if the + driver is not executing in SMM. + + @retval TRUE The driver is executing in Standalone Management Mode (SMM). + @retval FALSE The driver is not executing in Standalone Management Mode (SMM). + +**/ +BOOLEAN +EFIAPI +InMm ( + VOID + ) +{ + return FALSE; +} diff --git a/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.inf b/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.inf new file mode 100644 index 0000000000..5948fd2708 --- /dev/null +++ b/MdeModulePkg/Library/StandaloneMmRuntimeDxe/StandaloneMmRuntimeDxe.inf @@ -0,0 +1,43 @@ +## @file +# Provides StandaloneMmRuntimeDxe. +# +# Copyright (c) 2018, ARM Limited. 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 = StandaloneMmRuntimeDxe + FILE_GUID = 8099cfbf-9564-4c9b-9052-e66b1da88930 + MODULE_TYPE = DXE_RUNTIME_DRIVER + VERSION_STRING = 1.0 + LIBRARY_CLASS = StandaloneMmRuntimeDxe |DXE_RUNTIME_DRIVER DXE_SMM_DRIVER MM_STANDALONE + +# +# The following information is for reference only and not required by the build tools. +# +# VALID_ARCHITECTURES = IA32 X64 AARCH64 +# + +[Sources] + StandaloneMmRuntimeDxe.c + +[Packages] + MdePkg/MdePkg.dec + MdeModulePkg/MdeModulePkg.dec + +[LibraryClasses] + BaseLib + BaseMemoryLib + DebugLib + MemoryAllocationLib + -- 2.19.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
