BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3902
TdProbeLib is used to probe if the working system is of Td guest. This library is designed to run on SEC / PEI / DXE phases. A null instance of the library returns Non-Td anyway. A platform specific TdProbeLib will be implemented, for example, in OvmfPkg. Cc: Michael D Kinney <michael.d.kin...@intel.com> Cc: Liming Gao <gaolim...@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang....@intel.com> Cc: James Bottomley <j...@linux.ibm.com> Cc: Jiewen Yao <jiewen....@intel.com> Cc: Gerd Hoffmann <kra...@redhat.com> Signed-off-by: Min Xu <min.m...@intel.com> --- MdePkg/Include/Library/TdProbeLib.h | 26 +++++++++++++++++++ .../Library/TdProbeLibNull/TdProbeLibNull.c | 25 ++++++++++++++++++ .../Library/TdProbeLibNull/TdProbeLibNull.inf | 21 +++++++++++++++ MdePkg/MdePkg.dec | 5 ++++ MdePkg/MdePkg.dsc | 1 + 5 files changed, 78 insertions(+) create mode 100644 MdePkg/Include/Library/TdProbeLib.h create mode 100644 MdePkg/Library/TdProbeLibNull/TdProbeLibNull.c create mode 100644 MdePkg/Library/TdProbeLibNull/TdProbeLibNull.inf diff --git a/MdePkg/Include/Library/TdProbeLib.h b/MdePkg/Include/Library/TdProbeLib.h new file mode 100644 index 000000000000..363a30fce649 --- /dev/null +++ b/MdePkg/Include/Library/TdProbeLib.h @@ -0,0 +1,26 @@ +/** @file + +Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef TD_PROBE_LIB_H_ +#define TD_PROBE_LIB_H_ + +#define TD_PROBE_NON 0 +#define TD_PROBE_TDX 1 + +/** + Probe if it is Tdx guest. + + @return TD_PROBE_TDX if it is Tdx guest. Otherwise return TD_PROBE_NON. + +**/ +UINTN +EFIAPI +TdProbe ( + VOID + ); + +#endif diff --git a/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.c b/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.c new file mode 100644 index 000000000000..8aa2baf9053d --- /dev/null +++ b/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.c @@ -0,0 +1,25 @@ +/** @file + + Null stub of TdProbeLib + + Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <Library/TdProbeLib.h> + +/** + Probe if it is Tdx guest. + + @return TD_PROBE_TDX if it is Tdx guest. Otherwise return TD_PROBE_NON. + +**/ +UINTN +EFIAPI +TdProbe ( + VOID + ) +{ + return TD_PROBE_NON; +} diff --git a/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.inf b/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.inf new file mode 100644 index 000000000000..7db961e6ea2d --- /dev/null +++ b/MdePkg/Library/TdProbeLibNull/TdProbeLibNull.inf @@ -0,0 +1,21 @@ +## @file +# TdProbeLib null instance. +# +# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR> +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = TdProbeLibNull + FILE_GUID = B15D67FE-0DAC-4316-8E26-8A6b85E43782 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = TdProbeLib + +[Sources] + TdProbeLibNull.c + +[Packages] + MdePkg/MdePkg.dec diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec index 1934c9840423..9cc713e3d5af 100644 --- a/MdePkg/MdePkg.dec +++ b/MdePkg/MdePkg.dec @@ -267,6 +267,11 @@ # RegisterFilterLib|Include/Library/RegisterFilterLib.h + ## @libraryclass This library provides interfances to probe Td guest. + # + # + TdProbeLib|Include/Library/TdProbeLib.h + [LibraryClasses.IA32, LibraryClasses.X64, LibraryClasses.AARCH64] ## @libraryclass Provides services to generate random number. # diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc index d6a7af412be7..c2a68056f48a 100644 --- a/MdePkg/MdePkg.dsc +++ b/MdePkg/MdePkg.dsc @@ -130,6 +130,7 @@ MdePkg/Library/StandaloneMmServicesTableLib/StandaloneMmServicesTableLib.inf MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf + MdePkg/Library/TdProbeLibNull/TdProbeLibNull.inf [Components.IA32, Components.X64, Components.ARM, Components.AARCH64] # -- 2.29.2.windows.2 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#88862): https://edk2.groups.io/g/devel/message/88862 Mute This Topic: https://groups.io/mt/90436750/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-