/** @file
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Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/DebugLib.h>
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#include <Library/IoLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PchPolicyLib.h>
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/**
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Performs silicon pre-mem policy initialization.
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The meaning of Policy is defined by silicon code.
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It could be the raw data, a handle, a PPI, etc.
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The returned data must be used as input data for SiliconPolicyDonePreMem(),
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and SiliconPolicyUpdateLib.SiliconPolicyUpdatePreMem().
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1) In FSP path, the input Policy should be FspmUpd.
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Value of FspmUpd has been initialized by FSP binary default value.
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Only a subset of FspmUpd needs to be updated for different silicon sku.
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The return data is same FspmUpd.
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2) In non-FSP path, the input policy could be NULL.
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The return data is the initialized policy.
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@param[in, out] Policy Pointer to policy.
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@return the initialized policy.
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**/
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VOID *
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EFIAPI
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SiliconPolicyInitPreMem (
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IN OUT VOID *Policy OPTIONAL
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)
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{
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EFI_STATUS Status;
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PCH_POLICY_PPI *PchPolicyPpi;
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//
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// Call PchCreatePolicyDefaults to initialize platform policy structure
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// and get all intel default policy settings.
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//
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Status = PchCreatePolicyDefaults (&PchPolicyPpi);
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ASSERT_EFI_ERROR (Status);
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return PchPolicyPpi;
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}
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/*
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The silicon pre-mem policy is finalized.
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Silicon code can do initialization based upon the policy data.
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The input Policy must be returned by SiliconPolicyInitPreMem().
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@param[in] Policy Pointer to policy.
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@retval RETURN_SUCCESS The policy is handled consumed by silicon code.
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*/
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RETURN_STATUS
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EFIAPI
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SiliconPolicyDonePreMem (
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IN VOID *Policy
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)
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{
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EFI_STATUS Status;
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//
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// Install PchPolicyPpi.
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// While installed, RC assumes the Policy is ready and finalized. So please
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// update and override any setting before calling this function.
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//
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Status = PchInstallPolicyPpi (Policy);
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ASSERT_EFI_ERROR (Status);
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return Status;
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}
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/**
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Performs silicon post-mem policy initialization.
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The meaning of Policy is defined by silicon code.
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It could be the raw data, a handle, a PPI, etc.
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The returned data must be used as input data for SiliconPolicyDonePostMem(),
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and SiliconPolicyUpdateLib.SiliconPolicyUpdatePostMem().
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1) In FSP path, the input Policy should be FspsUpd.
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Value of FspsUpd has been initialized by FSP binary default value.
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Only a subset of FspsUpd needs to be updated for different silicon sku.
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The return data is same FspsUpd.
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2) In non-FSP path, the input policy could be NULL.
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The return data is the initialized policy.
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@param[in, out] Policy Pointer to policy.
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@return the initialized policy.
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**/
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VOID *
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EFIAPI
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SiliconPolicyInitPostMem (
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IN OUT VOID *Policy OPTIONAL
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)
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{
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return Policy;
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}
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/*
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The silicon post-mem policy is finalized.
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Silicon code can do initialization based upon the policy data.
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The input Policy must be returned by SiliconPolicyInitPostMem().
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@param[in] Policy Pointer to policy.
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@retval RETURN_SUCCESS The policy is handled consumed by silicon code.
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*/
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RETURN_STATUS
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EFIAPI
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SiliconPolicyDonePostMem (
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IN VOID *Policy
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)
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{
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return RETURN_SUCCESS;
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}
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