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SecurityPkg: Tpm2DeviceLibDTpm: Introduce StandaloneMm instance

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This change added a new instance of Tpm2DeviceLibDTpm to support drivers
of type MM_STANDALONE. It abstracts dynamic Pcd access into separate file
for different instances to avoid dynamic usage for StandaloneMm modules.

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>
This commit is contained in:
Kun Qin
2020-12-17 22:31:21 -08:00
parent 44ac44a269
commit 7a56650e2e
10 changed files with 275 additions and 84 deletions
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40
SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c
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@@ -16,29 +16,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
#include <Guid/TpmInstance.h>
/**
Return PTP interface type.
@param[in] Register Pointer to PTP register.
@return PTP interface type.
**/
TPM2_PTP_INTERFACE_TYPE
Tpm2GetPtpInterface (
IN VOID *Register
);
/**
Return PTP CRB interface IdleByPass state.
@param[in] Register Pointer to PTP register.
@return PTP CRB interface IdleByPass state.
**/
UINT8
Tpm2GetIdleByPass (
IN VOID *Register
);
#include "Tpm2DeviceLibDTpm.h"
/**
Dump PTP register information.
@@ -102,8 +80,6 @@ Tpm2InstanceLibDTpmConstructor (
)
{
EFI_STATUS Status;
TPM2_PTP_INTERFACE_TYPE PtpInterface;
UINT8 IdleByPass;
Status = Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device);
if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) {
@@ -111,19 +87,7 @@ Tpm2InstanceLibDTpmConstructor (
// Unsupported means platform policy does not need this instance enabled.
//
if (Status == EFI_SUCCESS) {
//
// Cache current active TpmInterfaceType only when needed
//
if (PcdGet8(PcdActiveTpmInterfaceType) == 0xFF) {
PtpInterface = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
PcdSet8S(PcdActiveTpmInterfaceType, PtpInterface);
}
if (PcdGet8(PcdActiveTpmInterfaceType) == Tpm2PtpInterfaceCrb && PcdGet8(PcdCRBIdleByPass) == 0xFF) {
IdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
PcdSet8S(PcdCRBIdleByPass, IdleByPass);
}
Status = InternalTpm2DeviceLibDTpmCommonConstructor ();
DumpPtpInfo ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));
}
return EFI_SUCCESS;