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Add module that initializes a CPU for the SMM environment and installs the first level SMI handler. This module along with the SMM IPL and SMM Core provide the services required for DXE_SMM_DRIVERS to register hardware and software SMI handlers. CPU specific features are abstracted through the SmmCpuFeaturesLib Platform specific features are abstracted through the SmmCpuPlatformHookLib Several PCDs are added to enable/disable features and configure settings for the PiSmmCpuDxeSmm module Changes between [PATCH v1] and [PATCH v2]: 1) Swap PTE init order for QEMU compatibility. Current PTE initialization algorithm works on HW but breaks QEMU emulator. Update the PTE initialization order to be compatible with both. 2) Update comment block that describes 32KB SMBASE alignment requirement to match contents of Intel(R) 64 and IA-32 Architectures Software Developer's Manual 3) Remove BUGBUG comment and call to ClearSmi() that is not required. SMI should be cleared by root SMI handler. [jeff.fan@intel.com: Fix code style issues reported by ECC] Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael Kinney <michael.d.kinney@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> [pbonzini@redhat.com: InitPaging: prepare PT before filling in PDE] Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18645 6f19259b-4bc3-4df7-8a09-765794883524
182 lines
6.6 KiB
C
182 lines
6.6 KiB
C
/** @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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