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/** @file
Private header with declarations and definitions specific to the MM Standalone
CPU driver
Copyright (c) 2017 - 2021, Arm Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef MM_CPU_DRIVER_H_
#define MM_CPU_DRIVER_H_
#include <Protocol/MmCommunication2.h>
#include <Protocol/MmConfiguration.h>
#include <Protocol/MmCpu.h>
#include <Guid/MpInformation.h>
typedef
EFI_STATUS
(*PI_MM_CPU_DRIVER_ENTRYPOINT) (
IN UINTN EventId,
IN UINTN CpuNumber,
IN UINTN NsCommBufferAddr
);
typedef struct {
PI_MM_CPU_DRIVER_ENTRYPOINT *MmCpuDriverEpPtr;
} MM_CPU_DRIVER_EP_DESCRIPTOR;
//
// CPU driver initialization specific declarations
//
extern EFI_MM_SYSTEM_TABLE *mMmst;
//
// CPU State Save protocol specific declarations
//
extern EFI_MM_CPU_PROTOCOL mMmCpuState;
//
// MM event handling specific declarations
//
extern EFI_MM_COMMUNICATE_HEADER **PerCpuGuidedEventContext;
extern EFI_MMRAM_DESCRIPTOR mNsCommBuffer;
extern EFI_MMRAM_DESCRIPTOR mSCommBuffer;
extern MP_INFORMATION_HOB_DATA *mMpInformationHobData;
extern EFI_MM_CONFIGURATION_PROTOCOL mMmConfig;
/**
The PI Standalone MM entry point for the CPU driver.
@param [in] EventId The event Id.
@param [in] CpuNumber The CPU number.
@param [in] NsCommBufferAddr Address of the NS common buffer.
@retval EFI_SUCCESS Success.
@retval EFI_INVALID_PARAMETER A parameter was invalid.
@retval EFI_ACCESS_DENIED Access not permitted.
@retval EFI_OUT_OF_RESOURCES Out of resources.
@retval EFI_UNSUPPORTED Operation not supported.
**/
EFI_STATUS
PiMmStandaloneMmCpuDriverEntry (
IN UINTN EventId,
IN UINTN CpuNumber,
IN UINTN NsCommBufferAddr
);
/**
This function is the main entry point for an MM handler dispatch
or communicate-based callback.
@param DispatchHandle The unique handle assigned to this handler by
MmiHandlerRegister().
@param Context Points to an optional handler context which was
specified when the handler was registered.
@param CommBuffer A pointer to a collection of data in memory that will
be conveyed from a non-MM environment into an
MM environment.
@param CommBufferSize The size of the CommBuffer.
@return Status Code
**/
EFI_STATUS
EFIAPI
PiMmCpuTpFwRootMmiHandler (
IN EFI_HANDLE DispatchHandle,
IN CONST VOID *Context OPTIONAL,
IN OUT VOID *CommBuffer OPTIONAL,
IN OUT UINTN *CommBufferSize OPTIONAL
);
#endif /* MM_CPU_DRIVER_H_ */
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