From 3c2dc30d1bc45eeef68d7d0e056a4b3928015ec0 Mon Sep 17 00:00:00 2001
From: Kun Qin <kun.q@outlook.com>
Date: Thu, 4 Mar 2021 20:14:13 -0800
Subject: SecurityPkg: Tcg2Smm: Separate Tcg2Smm into 2 modules

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3169

This change separated the original Tcg2Smm module into 2 drivers: the
SMM driver that registers callback for physical presence and memory
clear; the Tcg2Acpi driver that patches and publishes ACPI table for
runtime use.

Tcg2Smm introduced an SMI root handler to allow Tcg2Acpi to communicate
the NVS region used by Tpm.asl and exchange the registered SwSmiValue.

Lastly, Tcg2Smm driver will publish gTcg2MmSwSmiRegisteredGuid at the end
of entrypoint to ensure Tcg2Acpi to load after Tcg2Smm is ready to
communicate.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Qi Zhang <qi1.zhang@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>

Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Message-Id: <MWHPR06MB310295CC623EF7C062844DFFF3969@MWHPR06MB3102.namprd06.prod.outlook.com>
---
 SecurityPkg/Include/Guid/TpmNvsMm.h | 68 +++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 SecurityPkg/Include/Guid/TpmNvsMm.h

(limited to 'SecurityPkg/Include')

diff --git a/SecurityPkg/Include/Guid/TpmNvsMm.h b/SecurityPkg/Include/Guid/TpmNvsMm.h
new file mode 100644
index 0000000000..64c0f5c346
--- /dev/null
+++ b/SecurityPkg/Include/Guid/TpmNvsMm.h
@@ -0,0 +1,68 @@
+/** @file
+  TPM NVS MM guid, used for exchanging information, including SWI value and NVS region
+  information, for patching TPM ACPI table.
+
+Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) Microsoft Corporation.
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef TCG2_NVS_MM_H_
+#define TCG2_NVS_MM_H_
+
+#define MM_TPM_NVS_HOB_GUID \
+  { 0xc96c76eb, 0xbc78, 0x429c, { 0x9f, 0x4b, 0xda, 0x51, 0x78, 0xc2, 0x84, 0x57 }}
+
+extern EFI_GUID gTpmNvsMmGuid;
+
+#pragma pack(1)
+typedef struct {
+  UINT8                  SoftwareSmi;
+  UINT32                 Parameter;
+  UINT32                 Response;
+  UINT32                 Request;
+  UINT32                 RequestParameter;
+  UINT32                 LastRequest;
+  UINT32                 ReturnCode;
+} PHYSICAL_PRESENCE_NVS;
+
+typedef struct {
+  UINT8                  SoftwareSmi;
+  UINT32                 Parameter;
+  UINT32                 Request;
+  UINT32                 ReturnCode;
+} MEMORY_CLEAR_NVS;
+
+typedef struct {
+  PHYSICAL_PRESENCE_NVS  PhysicalPresence;
+  MEMORY_CLEAR_NVS       MemoryClear;
+  UINT32                 PPRequestUserConfirm;
+  UINT32                 TpmIrqNum;
+  BOOLEAN                IsShortFormPkgLength;
+} TCG_NVS;
+
+typedef struct {
+  UINT8                  OpRegionOp;
+  UINT32                 NameString;
+  UINT8                  RegionSpace;
+  UINT8                  DWordPrefix;
+  UINT32                 RegionOffset;
+  UINT8                  BytePrefix;
+  UINT8                  RegionLen;
+} AML_OP_REGION_32_8;
+
+typedef struct {
+  UINT64                Function;
+  UINT64                ReturnStatus;
+  EFI_PHYSICAL_ADDRESS  TargetAddress;
+  UINT64                RegisteredPpSwiValue;
+  UINT64                RegisteredMcSwiValue;
+} TPM_NVS_MM_COMM_BUFFER;
+#pragma pack()
+
+typedef enum {
+  TpmNvsMmExchangeInfo,
+} TPM_NVS_MM_FUNCTION;
+
+#endif  // TCG2_NVS_MM_H_
-- 
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