142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/** @file
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This file is SampleCode of the library for Intel PCH PEI Debug Policy initialization.
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2015 - 2021 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 <Uefi.h>
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#include <Library/SiPolicyLib.h>
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#include <PiPei.h>
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#include <SetupVariable.h>
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Ppi/ReadOnlyVariable2.h>
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#include <Library/PeiServicesLib.h>
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#include <Ppi/SiPolicy.h>
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#include <Library/PchInfoLib.h>
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#if FixedPcdGet8(PcdFspModeSelection) == 1
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#include <FspmUpd.h>
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#endif
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#include <PolicyUpdateMacro.h>
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/**
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Update Smbus Debug Pre Mem Policy.
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@param[in] SiPreMemPolicy Pointer to SI_PREMEM_POLICY_PPI
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@param[in] FspsUpm Pointer to FspsUpm structure
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@param[in] PchSetup Pointer to PCH_SETUP buffer
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**/
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STATIC
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VOID
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UpdateSmbusDebugPreMemPolicy (
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IN SI_PREMEM_POLICY_PPI *SiPreMemPolicy,
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IN VOID *FspmUpd,
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IN PCH_SETUP *PchSetup
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)
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{
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#if FixedPcdGet8(PcdFspModeSelection) == 0
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PCH_SMBUS_PREMEM_CONFIG *SmbusPreMemConfig;
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EFI_STATUS Status;
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Status = GetConfigBlock ((VOID *) SiPreMemPolicy, &gSmbusPreMemConfigGuid, (VOID *) &SmbusPreMemConfig);
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ASSERT_EFI_ERROR (Status);
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if (EFI_ERROR (Status)) {
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return;
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}
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#endif
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UPDATE_POLICY (((FSPM_UPD *) FspmUpd)->FspmConfig.SmbusSpdWriteDisable, SmbusPreMemConfig->SpdWriteDisable, PchSetup->SmbusSpdWriteDisable);
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}
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/**
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This function performs PCH PEI Debug Policy initialization.
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@retval EFI_SUCCESS The PPI is installed and initialized.
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@retval EFI ERRORS The PPI is not successfully installed.
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**/
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EFI_STATUS
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EFIAPI
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UpdatePeiPchPolicyDebugPreMem (
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariableServices;
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UINTN VariableSize;
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PCH_SETUP PchSetup;
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VOID *FspmUpd;
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SI_PREMEM_POLICY_PPI *SiPreMemPolicy;
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DEBUG ((DEBUG_INFO, "Update PeiPchPolicyDebug Pre-Mem Start\n"));
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FspmUpd = NULL;
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SiPreMemPolicy = NULL;
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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 **) &SiPreMemPolicy);
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ASSERT_EFI_ERROR (Status);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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#endif
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//
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// Retrieve Setup variable
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//
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Status = PeiServicesLocatePpi (
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&gEfiPeiReadOnlyVariable2PpiGuid, // GUID
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0, // INSTANCE
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NULL, // EFI_PEI_PPI_DESCRIPTOR
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(VOID **) &VariableServices // PPI
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);
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ASSERT_EFI_ERROR (Status);
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VariableSize = sizeof (PCH_SETUP);
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Status = VariableServices->GetVariable (
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VariableServices,
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L"PchSetup",
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&gPchSetupVariableGuid,
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NULL,
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&VariableSize,
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&PchSetup
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);
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ASSERT_EFI_ERROR (Status);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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UpdateSmbusDebugPreMemPolicy (SiPreMemPolicy, FspmUpd, &PchSetup);
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return EFI_SUCCESS;
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}
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