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84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
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/** @file
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The CPU specific programming for PiSmmCpuDxeSmm module when STM support
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is not included.
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Copyright (c) 2010 - 2016, 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 <PiSmm.h>
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#include <Library/SmmCpuFeaturesLib.h>
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/**
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Internal worker function that is called to complete CPU initialization at the
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end of SmmCpuFeaturesInitializeProcessor().
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**/
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VOID
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FinishSmmCpuFeaturesInitializeProcessor (
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VOID
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)
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{
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}
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/**
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Return the size, in bytes, of a custom SMI Handler in bytes. If 0 is
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returned, then a custom SMI handler is not provided by this library,
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and the default SMI handler must be used.
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@retval 0 Use the default SMI handler.
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@retval > 0 Use the SMI handler installed by SmmCpuFeaturesInstallSmiHandler()
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The caller is required to allocate enough SMRAM for each CPU to
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support the size of the custom SMI handler.
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**/
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UINTN
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EFIAPI
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SmmCpuFeaturesGetSmiHandlerSize (
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VOID
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)
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{
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return 0;
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}
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/**
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Install a custom SMI handler for the CPU specified by CpuIndex. This function
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is only called if SmmCpuFeaturesGetSmiHandlerSize() returns a size is greater
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than zero and is called by the CPU that was elected as monarch during System
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Management Mode initialization.
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@param[in] CpuIndex The index of the CPU to install the custom SMI handler.
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The value must be between 0 and the NumberOfCpus field
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in the System Management System Table (SMST).
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@param[in] SmBase The SMBASE address for the CPU specified by CpuIndex.
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@param[in] SmiStack The stack to use when an SMI is processed by the
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the CPU specified by CpuIndex.
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@param[in] StackSize The size, in bytes, if the stack used when an SMI is
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processed by the CPU specified by CpuIndex.
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@param[in] GdtBase The base address of the GDT to use when an SMI is
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processed by the CPU specified by CpuIndex.
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@param[in] GdtSize The size, in bytes, of the GDT used when an SMI is
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processed by the CPU specified by CpuIndex.
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@param[in] IdtBase The base address of the IDT to use when an SMI is
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processed by the CPU specified by CpuIndex.
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@param[in] IdtSize The size, in bytes, of the IDT used when an SMI is
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processed by the CPU specified by CpuIndex.
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@param[in] Cr3 The base address of the page tables to use when an SMI
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is processed by the CPU specified by CpuIndex.
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**/
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VOID
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EFIAPI
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SmmCpuFeaturesInstallSmiHandler (
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IN UINTN CpuIndex,
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IN UINT32 SmBase,
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IN VOID *SmiStack,
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IN UINTN StackSize,
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IN UINTN GdtBase,
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IN UINTN GdtSize,
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IN UINTN IdtBase,
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IN UINTN IdtSize,
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IN UINT32 Cr3
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)
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{
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}
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