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UefiCpuPkg: Extend SMM CPU Service with rendezvous support.

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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>
This commit is contained in:
Li, Zhihao
2022-03-01 19:22:19 +08:00
committed by mergify[bot]
parent b83d0a6438
commit 4a68176cb5
10 changed files with 322 additions and 12 deletions
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36
UefiCpuPkg/Include/Protocol/SmmCpuService.h
View File

@ -1,7 +1,7 @@
/** @file
SMM CPU Service protocol definition.
Copyright (c) 2013 - 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2013 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -200,4 +200,38 @@ struct _EFI_SMM_CPU_SERVICE_PROTOCOL {
extern EFI_GUID gEfiSmmCpuServiceProtocolGuid;
//
// EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL provide SMM CPU
// rendezvous service support.
//
#define EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL_GUID \
{ \
0xaa00d50b, 0x4911, 0x428f, { 0xb9, 0x1a, 0xa5, 0x9d, 0xdb, 0x13, 0xe2, 0x4c } \
}
typedef struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL;
/**
Wait for all APs to arrive SMM mode in given timeout constraint.
@param[in] This A pointer to the EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL instance.
@param[in] BlockingMode Block or non-block 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.
**/
typedef
EFI_STATUS
(EFIAPI *EDKII_WAIT_FOR_ALL_PROCESSOR)(
IN EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL *This,
IN BOOLEAN BlockingMode
);
struct _EDKII_SMM_CPU_RENDEZVOUS_PROTOCOL {
EDKII_WAIT_FOR_ALL_PROCESSOR WaitForAllProcessor;
};
extern EFI_GUID gEdkiiSmmCpuRendezvousProtocolGuid;
#endif