182 lines
6.6 KiB
C
182 lines
6.6 KiB
C
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/** @file
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Include file for SMM CPU Services protocol implementation.
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Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _CPU_SERVICE_H_
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#define _CPU_SERVICE_H_
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typedef enum {
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SmmCpuNone,
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SmmCpuAdd,
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SmmCpuRemove,
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SmmCpuSwitchBsp
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} SMM_CPU_OPERATION;
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//
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// SMM CPU Service Protocol function prototypes.
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//
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/**
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Gets processor information on the requested processor at the instant this call is made.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of processor.
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@param[out] ProcessorInfoBuffer A pointer to the buffer where information for
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the requested processor is deposited.
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@retval EFI_SUCCESS Processor information was returned.
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@retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist in the platform.
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**/
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EFI_STATUS
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EFIAPI
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SmmGetProcessorInfo (
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
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);
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/**
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This service switches the requested AP to be the BSP since the next SMI.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of AP that is to become the new BSP.
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@retval EFI_SUCCESS BSP will be switched in next SMI.
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@retval EFI_UNSUPPORTED Switching the BSP or a processor to be hot-removed is not supported.
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@retval EFI_NOT_FOUND The processor with the handle specified by ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
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**/
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EFI_STATUS
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EFIAPI
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SmmSwitchBsp (
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber
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);
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/**
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Notify that a processor was hot-added.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorId Local APIC ID of the hot-added processor.
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@param[out] ProcessorNumber The handle number of the hot-added processor.
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@retval EFI_SUCCESS The hot-addition of the specified processors was successfully notified.
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@retval EFI_UNSUPPORTED Hot addition of processor is not supported.
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@retval EFI_NOT_FOUND The processor with the handle specified by ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
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@retval EFI_ALREADY_STARTED The processor is already online in the system.
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**/
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EFI_STATUS
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EFIAPI
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SmmAddProcessor (
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINT64 ProcessorId,
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OUT UINTN *ProcessorNumber
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);
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/**
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Notify that a processor was hot-removed.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[in] ProcessorNumber The handle number of the hot-added processor.
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@retval EFI_SUCCESS The hot-removal of the specified processors was successfully notified.
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@retval EFI_UNSUPPORTED Hot removal of processor is not supported.
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@retval EFI_UNSUPPORTED Hot removal of BSP is not supported.
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@retval EFI_UNSUPPORTED Hot removal of a processor with pending hot-plug operation is not supported.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is invalid.
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**/
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EFI_STATUS
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EFIAPI
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SmmRemoveProcessor (
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN UINTN ProcessorNumber
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);
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/**
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This return the handle number for the calling processor.
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@param[in] This A pointer to the EFI_SMM_CPU_SERVICE_PROTOCOL instance.
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@param[out] ProcessorNumber The handle number of currently executing processor.
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@retval EFI_SUCCESS The current processor handle number was returned
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in ProcessorNumber.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
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**/
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EFI_STATUS
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EFIAPI
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SmmWhoAmI (
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IN CONST EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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OUT UINTN *ProcessorNumber
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);
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/**
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Register exception handler.
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@param This A pointer to the SMM_CPU_SERVICE_PROTOCOL instance.
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@param ExceptionType Defines which interrupt or exception to hook. Type EFI_EXCEPTION_TYPE and
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the valid values for this parameter are defined in EFI_DEBUG_SUPPORT_PROTOCOL
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of the UEFI 2.0 specification.
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@param InterruptHandler A pointer to a function of type EFI_CPU_INTERRUPT_HANDLER
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that is called when a processor interrupt occurs.
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If this parameter is NULL, then the handler will be uninstalled.
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@retval EFI_SUCCESS The handler for the processor interrupt was successfully installed or uninstalled.
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@retval EFI_ALREADY_STARTED InterruptHandler is not NULL, and a handler for InterruptType was previously installed.
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@retval EFI_INVALID_PARAMETER InterruptHandler is NULL, and a handler for InterruptType was not previously installed.
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@retval EFI_UNSUPPORTED The interrupt specified by InterruptType is not supported.
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**/
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EFI_STATUS
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EFIAPI
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SmmRegisterExceptionHandler (
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IN EFI_SMM_CPU_SERVICE_PROTOCOL *This,
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IN EFI_EXCEPTION_TYPE ExceptionType,
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IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
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);
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//
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// Internal function prototypes
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//
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/**
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Update the SMM CPU list per the pending operation.
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This function is called after return from SMI handlers.
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**/
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VOID
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SmmCpuUpdate (
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VOID
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);
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/**
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Initialize SMM CPU Services.
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It installs EFI SMM CPU Services Protocol.
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@param ImageHandle The firmware allocated handle for the EFI image.
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@retval EFI_SUCCESS EFI SMM CPU Services Protocol was installed successfully.
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**/
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EFI_STATUS
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InitializeSmmCpuServices (
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IN EFI_HANDLE Handle
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);
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#endif
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