mirror of https://github.com/acidanthera/audk.git
UefiCpuPkg/SmmCpuFeaturesLib: Restructure arch-dependent code
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4182 moves Intel-specific code to the arch-dependent file. Other processor families might have different implementation of these functions. Hence, moving out of the common file. Cc: Abner Chang <abner.chang@amd.com> Cc: Paul Grimes <paul.grimes@amd.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Signed-off-by: Abdul Lateef Attar <AbdulLateef.Attar@amd.com> Reviewed-by: Abner Chang <abner.chang@amd.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
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@ -417,3 +417,131 @@ SmmCpuFeaturesSetSmmRegister (
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AsmWriteMsr64 (SMM_FEATURES_LIB_SMM_FEATURE_CONTROL, Value);
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AsmWriteMsr64 (SMM_FEATURES_LIB_SMM_FEATURE_CONTROL, Value);
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}
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}
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}
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}
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/**
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This function updates the SMRAM save state on the currently executing CPU
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to resume execution at a specific address after an RSM instruction. This
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function must evaluate the SMRAM save state to determine the execution mode
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the RSM instruction resumes and update the resume execution address with
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either NewInstructionPointer32 or NewInstructionPoint. The auto HALT restart
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flag in the SMRAM save state must always be cleared. This function returns
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the value of the instruction pointer from the SMRAM save state that was
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replaced. If this function returns 0, then the SMRAM save state was not
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modified.
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This function is called during the very first SMI on each CPU after
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SmmCpuFeaturesInitializeProcessor() to set a flag in normal execution mode
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to signal that the SMBASE of each CPU has been updated before the default
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SMBASE address is used for the first SMI to the next CPU.
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@param[in] CpuIndex The index of the CPU to hook. The value
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must be between 0 and the NumberOfCpus
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field in the System Management System Table
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(SMST).
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@param[in] CpuState Pointer to SMRAM Save State Map for the
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currently executing CPU.
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@param[in] NewInstructionPointer32 Instruction pointer to use if resuming to
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32-bit execution mode from 64-bit SMM.
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@param[in] NewInstructionPointer Instruction pointer to use if resuming to
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same execution mode as SMM.
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@retval 0 This function did modify the SMRAM save state.
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@retval > 0 The original instruction pointer value from the SMRAM save state
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before it was replaced.
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**/
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UINT64
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EFIAPI
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SmmCpuFeaturesHookReturnFromSmm (
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IN UINTN CpuIndex,
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IN SMRAM_SAVE_STATE_MAP *CpuState,
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IN UINT64 NewInstructionPointer32,
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IN UINT64 NewInstructionPointer
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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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Read an SMM Save State register on the target processor. If this function
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returns EFI_UNSUPPORTED, then the caller is responsible for reading the
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SMM Save Sate register.
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@param[in] CpuIndex The index of the CPU to read the SMM Save State. The
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value must be between 0 and the NumberOfCpus field in
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the System Management System Table (SMST).
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@param[in] Register The SMM Save State register to read.
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@param[in] Width The number of bytes to read from the CPU save state.
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@param[out] Buffer Upon return, this holds the CPU register value read
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from the save state.
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@retval EFI_SUCCESS The register was read from Save State.
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@retval EFI_INVALID_PARAMETER Buffer is NULL.
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@retval EFI_UNSUPPORTED This function does not support reading Register.
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**/
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EFI_STATUS
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EFIAPI
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SmmCpuFeaturesReadSaveStateRegister (
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IN UINTN CpuIndex,
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IN EFI_SMM_SAVE_STATE_REGISTER Register,
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IN UINTN Width,
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OUT VOID *Buffer
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Writes an SMM Save State register on the target processor. If this function
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returns EFI_UNSUPPORTED, then the caller is responsible for writing the
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SMM Save Sate register.
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@param[in] CpuIndex The index of the CPU to write the SMM Save State. The
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value must be between 0 and the NumberOfCpus field in
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the System Management System Table (SMST).
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@param[in] Register The SMM Save State register to write.
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@param[in] Width The number of bytes to write to the CPU save state.
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@param[in] Buffer Upon entry, this holds the new CPU register value.
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@retval EFI_SUCCESS The register was written to Save State.
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@retval EFI_INVALID_PARAMETER Buffer is NULL.
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@retval EFI_UNSUPPORTED This function does not support writing Register.
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**/
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EFI_STATUS
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EFIAPI
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SmmCpuFeaturesWriteSaveStateRegister (
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IN UINTN CpuIndex,
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IN EFI_SMM_SAVE_STATE_REGISTER Register,
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IN UINTN Width,
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IN CONST VOID *Buffer
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Check to see if an SMM register is supported by a specified CPU.
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@param[in] CpuIndex The index of the CPU to check for SMM register support.
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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] RegName Identifies the SMM register to check for support.
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@retval TRUE The SMM register specified by RegName is supported by the CPU
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specified by CpuIndex.
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@retval FALSE The SMM register specified by RegName is not supported by the
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CPU specified by CpuIndex.
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**/
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BOOLEAN
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EFIAPI
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SmmCpuFeaturesIsSmmRegisterSupported (
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IN UINTN CpuIndex,
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IN SMM_REG_NAME RegName
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)
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{
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if (FeaturePcdGet (PcdSmmFeatureControlEnable) && (RegName == SmmRegFeatureControl)) {
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return TRUE;
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}
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return FALSE;
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}
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@ -17,49 +17,6 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
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#include "CpuFeaturesLib.h"
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#include "CpuFeaturesLib.h"
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/**
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This function updates the SMRAM save state on the currently executing CPU
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to resume execution at a specific address after an RSM instruction. This
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function must evaluate the SMRAM save state to determine the execution mode
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the RSM instruction resumes and update the resume execution address with
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either NewInstructionPointer32 or NewInstructionPoint. The auto HALT restart
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flag in the SMRAM save state must always be cleared. This function returns
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the value of the instruction pointer from the SMRAM save state that was
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replaced. If this function returns 0, then the SMRAM save state was not
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modified.
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This function is called during the very first SMI on each CPU after
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SmmCpuFeaturesInitializeProcessor() to set a flag in normal execution mode
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to signal that the SMBASE of each CPU has been updated before the default
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SMBASE address is used for the first SMI to the next CPU.
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@param[in] CpuIndex The index of the CPU to hook. The value
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must be between 0 and the NumberOfCpus
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field in the System Management System Table
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(SMST).
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@param[in] CpuState Pointer to SMRAM Save State Map for the
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currently executing CPU.
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@param[in] NewInstructionPointer32 Instruction pointer to use if resuming to
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32-bit execution mode from 64-bit SMM.
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@param[in] NewInstructionPointer Instruction pointer to use if resuming to
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same execution mode as SMM.
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@retval 0 This function did modify the SMRAM save state.
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@retval > 0 The original instruction pointer value from the SMRAM save state
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before it was replaced.
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**/
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UINT64
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EFIAPI
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SmmCpuFeaturesHookReturnFromSmm (
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IN UINTN CpuIndex,
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IN SMRAM_SAVE_STATE_MAP *CpuState,
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IN UINT64 NewInstructionPointer32,
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IN UINT64 NewInstructionPointer
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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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/**
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Hook point in normal execution mode that allows the one CPU that was elected
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Hook point in normal execution mode that allows the one CPU that was elected
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as monarch during System Management Mode initialization to perform additional
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as monarch during System Management Mode initialization to perform additional
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@ -90,91 +47,6 @@ SmmCpuFeaturesRendezvousExit (
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{
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{
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}
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}
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/**
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Check to see if an SMM register is supported by a specified CPU.
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@param[in] CpuIndex The index of the CPU to check for SMM register support.
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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] RegName Identifies the SMM register to check for support.
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@retval TRUE The SMM register specified by RegName is supported by the CPU
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specified by CpuIndex.
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@retval FALSE The SMM register specified by RegName is not supported by the
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CPU specified by CpuIndex.
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**/
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BOOLEAN
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EFIAPI
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SmmCpuFeaturesIsSmmRegisterSupported (
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IN UINTN CpuIndex,
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IN SMM_REG_NAME RegName
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)
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{
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if (FeaturePcdGet (PcdSmmFeatureControlEnable) && (RegName == SmmRegFeatureControl)) {
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return TRUE;
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}
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return FALSE;
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}
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/**
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Read an SMM Save State register on the target processor. If this function
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returns EFI_UNSUPPORTED, then the caller is responsible for reading the
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SMM Save Sate register.
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@param[in] CpuIndex The index of the CPU to read the SMM Save State. The
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value must be between 0 and the NumberOfCpus field in
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the System Management System Table (SMST).
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@param[in] Register The SMM Save State register to read.
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@param[in] Width The number of bytes to read from the CPU save state.
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@param[out] Buffer Upon return, this holds the CPU register value read
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from the save state.
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@retval EFI_SUCCESS The register was read from Save State.
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@retval EFI_INVALID_PARAMETER Buffer is NULL.
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@retval EFI_UNSUPPORTED This function does not support reading Register.
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**/
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EFI_STATUS
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EFIAPI
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SmmCpuFeaturesReadSaveStateRegister (
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IN UINTN CpuIndex,
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IN EFI_SMM_SAVE_STATE_REGISTER Register,
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IN UINTN Width,
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OUT VOID *Buffer
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Writes an SMM Save State register on the target processor. If this function
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returns EFI_UNSUPPORTED, then the caller is responsible for writing the
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SMM Save Sate register.
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@param[in] CpuIndex The index of the CPU to write the SMM Save State. The
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value must be between 0 and the NumberOfCpus field in
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the System Management System Table (SMST).
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@param[in] Register The SMM Save State register to write.
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@param[in] Width The number of bytes to write to the CPU save state.
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@param[in] Buffer Upon entry, this holds the new CPU register value.
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@retval EFI_SUCCESS The register was written to Save State.
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@retval EFI_INVALID_PARAMETER Buffer is NULL.
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@retval EFI_UNSUPPORTED This function does not support writing Register.
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**/
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EFI_STATUS
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EFIAPI
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SmmCpuFeaturesWriteSaveStateRegister (
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IN UINTN CpuIndex,
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IN EFI_SMM_SAVE_STATE_REGISTER Register,
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IN UINTN Width,
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IN CONST VOID *Buffer
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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/**
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This function is hook point called after the gEfiSmmReadyToLockProtocolGuid
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This function is hook point called after the gEfiSmmReadyToLockProtocolGuid
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notification is completely processed.
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notification is completely processed.
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