164 lines
6.4 KiB
C
164 lines
6.4 KiB
C
/** @file
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;******************************************************************************
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;* Copyright 2021 Insyde Software Corp. All Rights Reserved.
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;*
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;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
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;* transmit, broadcast, present, recite, release, license or otherwise exploit
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;* any part of this publication in any form, by any means, without the prior
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;* written permission of Insyde Software Corp.
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;*
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;******************************************************************************
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*/
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/** @file
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Intel PEI CPU Pre-Memory Policy update by board configuration
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2017 - 2019 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#include "PeiPolicyBoardConfig.h"
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#include <PlatformNvRamHookLib.h>
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#include <Register/Cpuid.h>
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#include <Library/TxtLib.h>
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#include <PolicyUpdateMacro.h>
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#define TXT_SINIT_MEMORY_SIZE 0x50000
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#define TXT_HEAP_MEMORY_SIZE 0xF0000
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#define GET_OCCUPIED_SIZE(ActualSize, Alignment) \
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((ActualSize) + (((Alignment) - ((ActualSize) & ((Alignment) - 1))) & ((Alignment) - 1)))
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/**
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Searches PEI firmware volume (FV_BB) for file containing BIOS ACM.
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@param[out] BiosAcBase - A pointer to pointer to variable to hold found address
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@retval EFI_SUCCESS - If address has been found
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@exception EFI_NOT_FOUND - If address has not been found
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**/
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EFI_STATUS
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FindBiosAcmInVolume (
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OUT UINT32 **BiosAcmBase
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)
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{
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EFI_STATUS Status;
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EFI_FIRMWARE_VOLUME_HEADER *FvHeader;
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EFI_FFS_FILE_HEADER *FfsHeader;
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UINT32 ModuleAddr;
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///
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/// Locate Firmware Volume header
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///
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//[-start-210413-IB17040192-add]//
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//FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FixedPcdGet32 (PcdFlashFvFirmwareBinariesBase);
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FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)FixedPcdGet32 (PcdFlashFirmwareBinariesFvBase);
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//[-end-210413-IB17040192-add]//
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Status = PeiServicesFfsFindFileByName (&gStartupAcmPeiFileGuid, FvHeader, (VOID **)&FfsHeader);
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ModuleAddr = (UINT32)((UINT8 *) FfsHeader + sizeof (EFI_FFS_FILE_HEADER));
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*BiosAcmBase = (UINT32 *) ModuleAddr;
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///
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/// If BIOS ACM is not found - don't hang system. Assume that TXT
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/// must be disabled.
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///
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "Failed to locate BIOS ACM\n"));
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return EFI_NOT_FOUND;
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}
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DEBUG(( DEBUG_ERROR, "ACM Module Location: %x\n", *BiosAcmBase));
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// found Startup ACM; check for 256KB alignment
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ASSERT(((((UINT32)(*BiosAcmBase)) & 0x3FFFF) == 0) ? TRUE : FALSE);
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return EFI_SUCCESS;
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}
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/**
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This function performs PEI CPU Pre-Memory Policy update by board configuration.
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@retval EFI_SUCCESS The SI Policy is successfully updated.
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@retval Others The SI Policy is not successfully updated.
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**/
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EFI_STATUS
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EFIAPI
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UpdatePeiCpuPolicyBoardConfigPreMem (
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VOID
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)
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{
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EFI_STATUS Status;
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UINT32 *BiosAcmBase;
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CPUID_VERSION_INFO_ECX Ecx;
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UINT32 TxtCapableChipset;
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#if FixedPcdGet8(PcdFspModeSelection) == 1
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VOID *FspmUpd;
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#else
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SI_PREMEM_POLICY_PPI *SiPreMemPolicyPpi;
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CPU_TXT_PREMEM_CONFIG *CpuTxtPreMemConfig;
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CPU_SECURITY_PREMEM_CONFIG *CpuSecurityPreMemConfig;
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#endif
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DEBUG ((DEBUG_INFO, "Updating CPU Policy by board config in Pre-Mem\n"));
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BiosAcmBase = NULL;
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#if FixedPcdGet8(PcdFspModeSelection) == 1
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FspmUpd = NULL;
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#else
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SiPreMemPolicyPpi = NULL;
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CpuTxtPreMemConfig = NULL;
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CpuSecurityPreMemConfig = NULL;
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#endif
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#if FixedPcdGet8(PcdFspModeSelection) == 1
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FspmUpd = (FSPM_UPD *) PcdGet32 (PcdFspmUpdDataAddress);
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ASSERT (FspmUpd != NULL);
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#else
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Status = PeiServicesLocatePpi (&gSiPreMemPolicyPpiGuid, 0, NULL, (VOID **) &SiPreMemPolicyPpi);
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ASSERT_EFI_ERROR (Status);
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Status = GetConfigBlock ((VOID *) SiPreMemPolicyPpi, &gCpuTxtPreMemConfigGuid, (VOID *) &CpuTxtPreMemConfig);
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ASSERT_EFI_ERROR(Status);
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Status = GetConfigBlock ((VOID *) SiPreMemPolicyPpi, &gCpuSecurityPreMemConfigGuid, (VOID *) &CpuSecurityPreMemConfig);
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ASSERT_EFI_ERROR(Status);
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CpuSecurityPreMemConfig->TxtAcheckRequest = GetTxtAliasCheckAndReset () & 1;
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#endif
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AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, &Ecx.Uint32, NULL);
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TxtCapableChipset = CheckSmxCapabilities ();
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Status = FindBiosAcmInVolume (&BiosAcmBase);
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if (!EFI_ERROR (Status)) {
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UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmConfig.BiosAcmBase, CpuTxtPreMemConfig->BiosAcmBase, (UINTN) BiosAcmBase);
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UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmConfig.BiosSize, CpuSecurityPreMemConfig->BiosSize, (UINT16) RShiftU64 (FixedPcdGet32 (PcdBiosSize), 10));
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}
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if ((Ecx.Bits.SMX == 1) && (TxtCapableChipset & BIT0)) {
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UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmConfig.SinitMemorySize, CpuTxtPreMemConfig->SinitMemorySize, TXT_SINIT_MEMORY_SIZE);
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UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmConfig.TxtHeapMemorySize, CpuTxtPreMemConfig->TxtHeapMemorySize, TXT_HEAP_MEMORY_SIZE);
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}
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return EFI_SUCCESS;
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}
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