mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-22 16:08:07 +01:00
334 lines
20 KiB
C
334 lines
20 KiB
C
/** @file
|
|
EFI MM MP Protocol is defined in the PI 1.5 specification.
|
|
|
|
The MM MP protocol provides a set of functions to allow execution of procedures on processors that
|
|
have entered MM. This protocol has the following properties:
|
|
1. The caller can only invoke execution of a procedure on a processor, other than the caller, that
|
|
has also entered MM.
|
|
2. It is possible to invoke a procedure on multiple processors. Supports blocking and non-blocking
|
|
modes of operation.
|
|
|
|
Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef _MM_MP_H_
|
|
#define _MM_MP_H_
|
|
|
|
#include <Pi/PiMmCis.h>
|
|
|
|
#define EFI_MM_MP_PROTOCOL_GUID \
|
|
{ \
|
|
0x5d5450d7, 0x990c, 0x4180, {0xa8, 0x3, 0x8e, 0x63, 0xf0, 0x60, 0x83, 0x7 } \
|
|
}
|
|
|
|
//
|
|
// Revision definition.
|
|
//
|
|
#define EFI_MM_MP_PROTOCOL_REVISION 0x00
|
|
|
|
//
|
|
// Attribute flags
|
|
//
|
|
#define EFI_MM_MP_TIMEOUT_SUPPORTED 0x01
|
|
|
|
//
|
|
// Completion token
|
|
//
|
|
typedef VOID* MM_COMPLETION;
|
|
|
|
typedef struct {
|
|
MM_COMPLETION Completion;
|
|
EFI_STATUS Status;
|
|
} MM_DISPATCH_COMPLETION_TOKEN;
|
|
|
|
typedef struct _EFI_MM_MP_PROTOCOL EFI_MM_MP_PROTOCOL;
|
|
|
|
/**
|
|
Service to retrieves the number of logical processor in the platform.
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[out] NumberOfProcessors Pointer to the total number of logical processors in the system,
|
|
including the BSP and all APs.
|
|
|
|
@retval EFI_SUCCESS The number of processors was retrieved successfully
|
|
@retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_MM_GET_NUMBER_OF_PROCESSORS) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
OUT UINTN *NumberOfProcessors
|
|
);
|
|
|
|
|
|
/**
|
|
This service allows the caller to invoke a procedure one of the application processors (AP). This
|
|
function uses an optional token parameter to support blocking and non-blocking modes. If the token
|
|
is passed into the call, the function will operate in a non-blocking fashion and the caller can
|
|
check for completion with CheckOnProcedure or WaitForProcedure.
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[in] Procedure A pointer to the procedure to be run on the designated target
|
|
AP of the system. Type EFI_AP_PROCEDURE2 is defined below in
|
|
related definitions.
|
|
@param[in] CpuNumber The zero-based index of the processor number of the target
|
|
AP, on which the code stream is supposed to run. If the number
|
|
points to the calling processor then it will not run the
|
|
supplied code.
|
|
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for this AP to
|
|
finish execution of Procedure, either for blocking or
|
|
non-blocking mode. Zero means infinity. If the timeout
|
|
expires before this AP returns from Procedure, then Procedure
|
|
on the AP is terminated. If the timeout expires in blocking
|
|
mode, the call returns EFI_TIMEOUT. If the timeout expires
|
|
in non-blocking mode, the timeout determined can be through
|
|
CheckOnProcedure or WaitForProcedure.
|
|
Note that timeout support is optional. Whether an
|
|
implementation supports this feature, can be determined via
|
|
the Attributes data member.
|
|
@param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code
|
|
that is run by the AP. It is an optional common mailbox
|
|
between APs and the caller to share information.
|
|
@param[in,out] Token This is parameter is broken into two components:
|
|
1.Token->Completion is an optional parameter that allows the
|
|
caller to execute the procedure in a blocking or non-blocking
|
|
fashion. If it is NULL the call is blocking, and the call will
|
|
not return until the AP has completed the procedure. If the
|
|
token is not NULL, the call will return immediately. The caller
|
|
can check whether the procedure has completed with
|
|
CheckOnProcedure or WaitForProcedure.
|
|
2.Token->Status The implementation updates the address pointed
|
|
at by this variable with the status code returned by Procedure
|
|
when it completes execution on the target AP, or with EFI_TIMEOUT
|
|
if the Procedure fails to complete within the optional timeout.
|
|
The implementation will update this variable with EFI_NOT_READY
|
|
prior to starting Procedure on the target AP.
|
|
@param[in,out] CPUStatus This optional pointer may be used to get the status code returned
|
|
by Procedure when it completes execution on the target AP, or with
|
|
EFI_TIMEOUT if the Procedure fails to complete within the optional
|
|
timeout. The implementation will update this variable with
|
|
EFI_NOT_READY prior to starting Procedure on the target AP.
|
|
|
|
@retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed
|
|
execution on the target AP.
|
|
In the non-blocking case this indicates that the procedure has
|
|
been successfully scheduled for execution on the target AP.
|
|
@retval EFI_INVALID_PARAMETER The input arguments are out of range. Either the target AP is the
|
|
caller of the function, or the Procedure or Token is NULL
|
|
@retval EFI_NOT_READY If the target AP is busy executing another procedure
|
|
@retval EFI_ALREADY_STARTED Token is already in use for another procedure
|
|
@retval EFI_TIMEOUT In blocking mode, the timeout expired before the specified AP
|
|
has finished
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_MM_DISPATCH_PROCEDURE) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
IN EFI_AP_PROCEDURE2 Procedure,
|
|
IN UINTN CpuNumber,
|
|
IN UINTN TimeoutInMicroseconds,
|
|
IN OUT VOID *ProcedureArguments OPTIONAL,
|
|
IN OUT MM_COMPLETION *Token,
|
|
IN OUT EFI_STATUS *CPUStatus
|
|
);
|
|
|
|
/**
|
|
This service allows the caller to invoke a procedure on all running application processors (AP)
|
|
except the caller. This function uses an optional token parameter to support blocking and
|
|
nonblocking modes. If the token is passed into the call, the function will operate in a non-blocking
|
|
fashion and the caller can check for completion with CheckOnProcedure or WaitForProcedure.
|
|
|
|
It is not necessary for the implementation to run the procedure on every processor on the platform.
|
|
Processors that are powered down in such a way that they cannot respond to interrupts, may be
|
|
excluded from the broadcast.
|
|
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[in] Procedure A pointer to the code stream to be run on the APs that have
|
|
entered MM. Type EFI_AP_PROCEDURE is defined below in related
|
|
definitions.
|
|
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish
|
|
execution of Procedure, either for blocking or non-blocking mode.
|
|
Zero means infinity. If the timeout expires before all APs return
|
|
from Procedure, then Procedure on the failed APs is terminated. If
|
|
the timeout expires in blocking mode, the call returns EFI_TIMEOUT.
|
|
If the timeout expires in non-blocking mode, the timeout determined
|
|
can be through CheckOnProcedure or WaitForProcedure.
|
|
Note that timeout support is optional. Whether an implementation
|
|
supports this feature can be determined via the Attributes data
|
|
member.
|
|
@param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code
|
|
that is run by the AP. It is an optional common mailbox
|
|
between APs and the caller to share information.
|
|
@param[in,out] Token This is parameter is broken into two components:
|
|
1.Token->Completion is an optional parameter that allows the
|
|
caller to execute the procedure in a blocking or non-blocking
|
|
fashion. If it is NULL the call is blocking, and the call will
|
|
not return until the AP has completed the procedure. If the
|
|
token is not NULL, the call will return immediately. The caller
|
|
can check whether the procedure has completed with
|
|
CheckOnProcedure or WaitForProcedure.
|
|
2.Token->Status The implementation updates the address pointed
|
|
at by this variable with the status code returned by Procedure
|
|
when it completes execution on the target AP, or with EFI_TIMEOUT
|
|
if the Procedure fails to complete within the optional timeout.
|
|
The implementation will update this variable with EFI_NOT_READY
|
|
prior to starting Procedure on the target AP
|
|
@param[in,out] CPUStatus This optional pointer may be used to get the individual status
|
|
returned by every AP that participated in the broadcast. This
|
|
parameter if used provides the base address of an array to hold
|
|
the EFI_STATUS value of each AP in the system. The size of the
|
|
array can be ascertained by the GetNumberOfProcessors function.
|
|
As mentioned above, the broadcast may not include every processor
|
|
in the system. Some implementations may exclude processors that
|
|
have been powered down in such a way that they are not responsive
|
|
to interrupts. Additionally the broadcast excludes the processor
|
|
which is making the BroadcastProcedure call. For every excluded
|
|
processor, the array entry must contain a value of EFI_NOT_STARTED
|
|
|
|
@retval EFI_SUCCESS In the blocking case, this indicates that Procedure has completed
|
|
execution on the APs. In the non-blocking case this indicates that
|
|
the procedure has been successfully scheduled for execution on the
|
|
APs.
|
|
@retval EFI_INVALID_PARAMETER Procedure or Token is NULL.
|
|
@retval EFI_NOT_READY If a target AP is busy executing another procedure.
|
|
@retval EFI_TIMEOUT In blocking mode, the timeout expired before all enabled APs have
|
|
finished.
|
|
@retval EFI_ALREADY_STARTED Before the AP procedure associated with the Token is finished, the
|
|
same Token cannot be used to dispatch or broadcast another procedure.
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_MM_BROADCAST_PROCEDURE) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
IN EFI_AP_PROCEDURE2 Procedure,
|
|
IN UINTN TimeoutInMicroseconds,
|
|
IN OUT VOID *ProcedureArguments OPTIONAL,
|
|
IN OUT MM_COMPLETION *Token,
|
|
IN OUT EFI_STATUS *CPUStatus
|
|
);
|
|
|
|
|
|
/**
|
|
This service allows the caller to set a startup procedure that will be executed when an AP powers
|
|
up from a state where core configuration and context is lost. The procedure is execution has the
|
|
following properties:
|
|
1. The procedure executes before the processor is handed over to the operating system.
|
|
2. All processors execute the same startup procedure.
|
|
3. The procedure may run in parallel with other procedures invoked through the functions in this
|
|
protocol, or with processors that are executing an MM handler or running in the operating system.
|
|
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[in] Procedure A pointer to the code stream to be run on the designated target AP
|
|
of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2
|
|
with the related definitions of
|
|
EFI_MP_SERVICES_PROTOCOL.StartupAllAPs.
|
|
If caller may pass a value of NULL to deregister any existing
|
|
startup procedure.
|
|
@param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is
|
|
run by the AP. It is an optional common mailbox between APs and
|
|
the caller to share information
|
|
|
|
@retval EFI_SUCCESS The Procedure has been set successfully.
|
|
@retval EFI_INVALID_PARAMETER The Procedure is NULL.
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_MM_SET_STARTUP_PROCEDURE) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
IN EFI_AP_PROCEDURE Procedure,
|
|
IN OUT VOID *ProcedureArguments OPTIONAL
|
|
);
|
|
|
|
/**
|
|
When non-blocking execution of a procedure on an AP is invoked with DispatchProcedure,
|
|
via the use of a token, this function can be used to check for completion of the procedure on the AP.
|
|
The function takes the token that was passed into the DispatchProcedure call. If the procedure
|
|
is complete, and therefore it is now possible to run another procedure on the same AP, this function
|
|
returns EFI_SUCESS. In this case the status returned by the procedure that executed on the AP is
|
|
returned in the token's Status field. If the procedure has not yet completed, then this function
|
|
returns EFI_NOT_READY.
|
|
|
|
When a non-blocking execution of a procedure is invoked with BroadcastProcedure, via the
|
|
use of a token, this function can be used to check for completion of the procedure on all the
|
|
broadcast APs. The function takes the token that was passed into the BroadcastProcedure
|
|
call. If the procedure is complete on all broadcast APs this function returns EFI_SUCESS. In this
|
|
case the Status field in the token passed into the function reflects the overall result of the
|
|
invocation, which may be EFI_SUCCESS, if all executions succeeded, or the first observed failure.
|
|
If the procedure has not yet completed on the broadcast APs, the function returns
|
|
EFI_NOT_READY.
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[in] Token This parameter describes the token that was passed into
|
|
DispatchProcedure or BroadcastProcedure.
|
|
|
|
@retval EFI_SUCCESS Procedure has completed.
|
|
@retval EFI_NOT_READY The Procedure has not completed.
|
|
@retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL
|
|
@retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_CHECK_FOR_PROCEDURE) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
IN MM_COMPLETION Token
|
|
);
|
|
|
|
/**
|
|
When a non-blocking execution of a procedure on an AP is invoked via DispatchProcedure,
|
|
this function will block the caller until the remote procedure has completed on the designated AP.
|
|
The non-blocking procedure invocation is identified by the Token parameter, which must match the
|
|
token that used when DispatchProcedure was called. Upon completion the status returned by
|
|
the procedure that executed on the AP is used to update the token's Status field.
|
|
|
|
When a non-blocking execution of a procedure on an AP is invoked via BroadcastProcedure
|
|
this function will block the caller until the remote procedure has completed on all of the APs that
|
|
entered MM. The non-blocking procedure invocation is identified by the Token parameter, which
|
|
must match the token that used when BroadcastProcedure was called. Upon completion the
|
|
overall status returned by the procedures that executed on the broadcast AP is used to update the
|
|
token's Status field. The overall status may be EFI_SUCCESS, if all executions succeeded, or the
|
|
first observed failure.
|
|
|
|
|
|
@param[in] This The EFI_MM_MP_PROTOCOL instance.
|
|
@param[in] Token This parameter describes the token that was passed into
|
|
DispatchProcedure or BroadcastProcedure.
|
|
|
|
@retval EFI_SUCCESS Procedure has completed.
|
|
@retval EFI_INVALID_PARAMETER Token or Token->Completion is NULL
|
|
@retval EFI_NOT_FOUND Token is not currently in use for a non-blocking call
|
|
|
|
**/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_WAIT_FOR_PROCEDURE) (
|
|
IN CONST EFI_MM_MP_PROTOCOL *This,
|
|
IN MM_COMPLETION Token
|
|
);
|
|
|
|
|
|
|
|
///
|
|
/// The MM MP protocol provides a set of functions to allow execution of procedures on processors that
|
|
/// have entered MM.
|
|
///
|
|
struct _EFI_MM_MP_PROTOCOL {
|
|
UINT32 Revision;
|
|
UINT32 Attributes;
|
|
EFI_MM_GET_NUMBER_OF_PROCESSORS GetNumberOfProcessors;
|
|
EFI_MM_DISPATCH_PROCEDURE DispatchProcedure;
|
|
EFI_MM_BROADCAST_PROCEDURE BroadcastProcedure;
|
|
EFI_MM_SET_STARTUP_PROCEDURE SetStartupProcedure;
|
|
EFI_CHECK_FOR_PROCEDURE CheckForProcedure;
|
|
EFI_WAIT_FOR_PROCEDURE WaitForProcedure;
|
|
};
|
|
|
|
extern EFI_GUID gEfiMmMpProtocolGuid;
|
|
|
|
#endif
|