cd70de1cc0
https://bugzilla.tianocore.org/show_bug.cgi?id=2420 Based on the following package with changes to merge into CryptoPkg. https://github.com/microsoft/mu_plus/tree/dev/201908/SharedCryptoPkg Add the PeiCryptLib, DxeCryptLib, and SmmCryptLib instances of the BaseCryptLib library classes that are implemented using the services of EDK II Crypto Protocols/PPIs. These library instances all set a dependency expression on the EDK II Crypto Protocols/PPIs, so any modules that use these library instances are not dispatched until the modules that produce the EDK II Crypto Protocols/PPIs are dispatched. Cc: Jian J Wang <jian.j.wang@intel.com> Cc: Xiaoyu Lu <xiaoyux.lu@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/** @file
|
|
Implements the GetCryptoServices() API that retuns a pointer to the EDK II
|
|
SMM Crypto Protocol.
|
|
|
|
Copyright (C) Microsoft Corporation. All rights reserved.
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <PiSmm.h>
|
|
#include <Library/BaseLib.h>
|
|
#include <Library/DebugLib.h>
|
|
#include <Library/SmmServicesTableLib.h>
|
|
#include <Protocol/SmmCrypto.h>
|
|
|
|
EDKII_SMM_CRYPTO_PROTOCOL *mSmmCryptoProtocol = NULL;
|
|
|
|
/**
|
|
Internal worker function that returns the pointer to an EDK II Crypto
|
|
Protocol/PPI. The layout of the PPI, DXE Protocol, and SMM Protocol are
|
|
identical which allows the implementation of the BaseCryptLib functions that
|
|
call through a Protocol/PPI to be shared for the PEI, DXE, and SMM
|
|
implementations.
|
|
|
|
This SMM implementation returns the pointer to the EDK II SMM Crypto Protocol
|
|
that was found in the library constructor SmmCryptLibConstructor().
|
|
**/
|
|
VOID *
|
|
GetCryptoServices (
|
|
VOID
|
|
)
|
|
{
|
|
return (VOID *)mSmmCryptoProtocol;
|
|
}
|
|
|
|
/**
|
|
Constructor looks up the EDK II SMM Crypto Protocol and verifies that it is
|
|
not NULL and has a high enough version value to support all the BaseCryptLib
|
|
functions.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The EDK II SMM Crypto Protocol was found.
|
|
@retval EFI_NOT_FOUND The EDK II SMM Crypto Protocol was not found.
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
SmmCryptLibConstructor (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
UINTN Version;
|
|
|
|
Status = gSmst->SmmLocateProtocol (
|
|
&gEdkiiSmmCryptoProtocolGuid,
|
|
NULL,
|
|
(VOID **)&mSmmCryptoProtocol
|
|
);
|
|
if (EFI_ERROR (Status) || mSmmCryptoProtocol == NULL) {
|
|
DEBUG((DEBUG_ERROR, "[SmmCryptLib] Failed to locate Crypto SMM Protocol. Status = %r\n", Status));
|
|
ASSERT_EFI_ERROR (Status);
|
|
ASSERT (mSmmCryptoProtocol != NULL);
|
|
mSmmCryptoProtocol = NULL;
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
Version = mSmmCryptoProtocol->GetVersion ();
|
|
if (Version < EDKII_CRYPTO_VERSION) {
|
|
DEBUG((DEBUG_ERROR, "[SmmCryptLib] Crypto SMM Protocol unsupported version %d\n", Version));
|
|
ASSERT (Version >= EDKII_CRYPTO_VERSION);
|
|
mSmmCryptoProtocol = NULL;
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|