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| author | Li, Zhihao <zhihao.li@intel.com> | 2022-04-25 16:47:27 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-05-09 02:04:11 +0000 |
| commit | 8079d4dc4f8ac23e02b02996e326cac4099b3e49 (patch) | |
| tree | 70448c3950d1028538a948723c60fe4f1353a78f /MdePkg/Library | |
| parent | 247a0fc65e5deea58a1486a0e506bc38fd9bed6b (diff) | |
| download | edk2-8079d4dc4f8ac23e02b02996e326cac4099b3e49.zip edk2-8079d4dc4f8ac23e02b02996e326cac4099b3e49.tar.gz edk2-8079d4dc4f8ac23e02b02996e326cac4099b3e49.tar.bz2 | |
MdePkg: add SmmCpuRendezvousLib.h and SmmCpuRendezvousLibNull implement.
REF? https://bugzilla.tianocore.org/show_bug.cgi?id=3912
UefiCpuPkg define a new Protocol with the new services
SmmWaitForAllProcessor(), which can be used by SMI handler
to optionally wait for other APs to complete SMM rendezvous in
relaxed AP mode.
VariableSmm and VariableStandaloneMM driver in MdeModulePkg need
to use this services but MdeModulePkg can't depend on UefiCpuPkg.
Thus, the solution is moving SmmCpuRendezvouslib.h from UefiCpuPkg
to MdePkg and creating SmmCpuRendezvousLib NullLib version
implementation in MdePkg as dependency for the pkg that can't
depend on UefiCpuPkg.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Michael Kubacki <mikuback@linux.microsoft.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Signed-off-by: Zhihao Li <zhihao.li@intel.com>
Acked-by: Liming Gao <gaoliming@byosoft.com.cn>
Diffstat (limited to 'MdePkg/Library')
| -rw-r--r-- | MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c | 29 | ||||
| -rw-r--r-- | MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf | 26 |
2 files changed, 55 insertions, 0 deletions
diff --git a/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c new file mode 100644 index 0000000..474195b --- /dev/null +++ b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.c @@ -0,0 +1,29 @@ +/** @file
+ SMM CPU Rendezvous sevice implement.
+
+ Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/SmmCpuRendezvousLib.h>
+
+/**
+ This routine wait for all AP processors to arrive in SMM.
+
+ @param[in] BlockingMode Blocking mode or non-blocking mode.
+
+ @retval EFI_SUCCESS All avaiable APs arrived.
+ @retval EFI_TIMEOUT Wait for all APs until timeout.
+ @retval OTHER Fail to register SMM CPU Rendezvous service Protocol.
+**/
+EFI_STATUS
+EFIAPI
+SmmWaitForAllProcessor (
+ IN BOOLEAN BlockingMode
+ )
+{
+ ASSERT (FALSE);
+ return EFI_SUCCESS;
+}
diff --git a/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf new file mode 100644 index 0000000..7c9bac9 --- /dev/null +++ b/MdePkg/Library/SmmCpuRendezvousLibNull/SmmCpuRendezvousLibNull.inf @@ -0,0 +1,26 @@ +## @file
+# SMM CPU Rendezvous service lib.
+#
+# This is SMM CPU rendezvous service lib that wait for all
+# APs to enter SMM mode.
+#
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = SmmCpuRendezvousLibNull
+ FILE_GUID = 1e5790ea-d013-4d7b-9047-b4342a762027
+ MODULE_TYPE = DXE_SMM_DRIVER
+ LIBRARY_CLASS = SmmCpuRendezvousLib|MM_STANDALONE DXE_SMM_DRIVER
+
+[Sources]
+ SmmCpuRendezvousLibNull.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ DebugLib
|