diff options
| author | Li, Zhihao <zhihao.li@intel.com> | 2022-03-01 19:22:19 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-03-04 05:44:42 +0000 |
| commit | 4a68176cb548902cad93e6ebb5957d0cac94d297 (patch) | |
| tree | db78f666a4d37560383070c2726067ce30be0dd3 /UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | |
| parent | b83d0a6438f24ba3c6234d9b7593be6f2246ec1e (diff) | |
| download | edk2-4a68176cb548902cad93e6ebb5957d0cac94d297.tar.gz | |
UefiCpuPkg: Extend SMM CPU Service with rendezvous support.
REF? https://bugzilla.tianocore.org/show_bug.cgi?id=3815
This patch 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.
A new library SmmCpuRendezvousLib is provided to abstract the service
into library API to simple SMI handler code.
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Zhihao Li <zhihao.li@intel.com>
Signed-off-by: Zhihao Li <zhihao.li@intel.com>
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h index 26d07c5b5e..aed872836c 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h @@ -1,7 +1,7 @@ /** @file
Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU.
-Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2009 - 2022, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -428,6 +428,7 @@ typedef struct { volatile SMM_CPU_SYNC_MODE EffectiveSyncMode;
volatile BOOLEAN SwitchBsp;
volatile BOOLEAN *CandidateBsp;
+ volatile BOOLEAN AllApArrivedWithException;
EFI_AP_PROCEDURE StartupProcedure;
VOID *StartupProcArgs;
} SMM_DISPATCHER_MP_SYNC_DATA;
@@ -1488,4 +1489,30 @@ IsRestrictedMemoryAccess ( VOID
);
+/**
+ Choose blocking or non-blocking mode to Wait for all APs.
+
+ @param[in] This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance.
+ @param[in] BlockingMode Blocking or non-blocking mode.
+
+ @retval EFI_SUCCESS All APs have arrived SMM mode except SMI disabled APs.
+ @retval EFI_TIMEOUT There are APs not in SMM mode in given timeout constraint.
+
+**/
+EFI_STATUS
+EFIAPI
+SmmCpuRendezvous (
+ IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This,
+ IN BOOLEAN BlockingMode
+ );
+
+/**
+ Insure when this function returns, no AP will execute normal mode code before entering SMM, except SMI disabled APs.
+
+**/
+VOID
+SmmWaitForApArrival (
+ VOID
+ );
+
#endif
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