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>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
/** @file
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Implements the GetCryptoServices() API that retuns a pointer to the EDK II
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Crypto PPI.
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Copyright (C) Microsoft Corporation. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiPei.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Ppi/Crypto.h>
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/**
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Internal worker function that returns the pointer to an EDK II Crypto
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Protocol/PPI. The layout of the PPI, DXE Protocol, and SMM Protocol are
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identical which allows the implementation of the BaseCryptLib functions that
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call through a Protocol/PPI to be shared for the PEI, DXE, and SMM
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implementations.
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This PEI implementation looks up the EDK II Crypto PPI and verifies the
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version each time a crypto service is called, so it is compatible with XIP
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PEIMs.
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**/
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VOID *
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GetCryptoServices (
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VOID
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)
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{
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EFI_STATUS Status;
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EDKII_CRYPTO_PPI *CryptoPpi;
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UINTN Version;
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CryptoPpi = NULL;
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Status = PeiServicesLocatePpi (
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&gEdkiiCryptoPpiGuid,
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0,
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NULL,
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(VOID **)&CryptoPpi
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);
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if (EFI_ERROR (Status) || CryptoPpi == NULL) {
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DEBUG((DEBUG_ERROR, "[PeiCryptLib] Failed to locate Crypto PPI. Status = %r\n", Status));
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ASSERT_EFI_ERROR (Status);
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ASSERT (CryptoPpi != NULL);
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return NULL;
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}
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Version = CryptoPpi->GetVersion ();
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if (Version < EDKII_CRYPTO_VERSION) {
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DEBUG((DEBUG_ERROR, "[PeiCryptLib] Crypto PPI unsupported version %d\n", Version));
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ASSERT (Version >= EDKII_CRYPTO_VERSION);
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return NULL;
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}
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return (VOID *)CryptoPpi;
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}
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