EFI multiprocessor API implementation. More...

#include <string.h>
#include <errno.h>
#include <ipxe/mp.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/Protocol/MpService.h>

Data Structures
struct	efi_mp_func_data
	EFI multiprocessor function call data. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	EFI_REQUEST_PROTOCOL (EFI_MP_SERVICES_PROTOCOL, &efimp)
static EFIAPI VOID	efi_mp_call (VOID *buffer)
	Call multiprocessor function on current CPU.
static void	efi_mp_exec_boot (mp_func_t func, void *opaque)
	Execute a multiprocessor function on the boot processor.
static void	efi_mp_start_all (mp_func_t func, void *opaque)
	Start a multiprocessor function on all application processors.
	PROVIDE_MPAPI_INLINE (efi, mp_address)
	PROVIDE_MPAPI (efi, mp_exec_boot, efi_mp_exec_boot)
	PROVIDE_MPAPI (efi, mp_start_all, efi_mp_start_all)

Variables
static EFI_MP_SERVICES_PROTOCOL *	efimp
	Multiprocessor services protocol.

Detailed Description

EFI multiprocessor API implementation.

Definition in file efi_mp.c.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )

◆ EFI_REQUEST_PROTOCOL()

EFI_REQUEST_PROTOCOL	(	EFI_MP_SERVICES_PROTOCOL	,
		&	efimp )

References efimp.

◆ efi_mp_call()

EFIAPI VOID efi_mp_call ( VOID * buffer )

static

Call multiprocessor function on current CPU.

Parameters

buffer Multiprocessor function call data

Definition at line 55 of file efi_mp.c.

                                                {
        struct efi_mp_func_data *data = buffer;
 
        /* Call multiprocessor function */
        mp_call ( data->func, data->opaque );
}

References buffer, data, EFIAPI, mp_call(), and VOID.

Referenced by efi_mp_exec_boot(), and efi_mp_start_all().

◆ efi_mp_exec_boot()

void efi_mp_exec_boot	(	mp_func_t	func,
		void *	opaque )

static

Execute a multiprocessor function on the boot processor.

Parameters

func	Multiprocessor function
opaque	Opaque data pointer

Definition at line 68 of file efi_mp.c.

                                                              {
        struct efi_mp_func_data data;
 
        /* Construct call data */
        data.func = mp_address ( func );
        data.opaque = mp_address ( opaque );
 
        /* Call multiprocesor function */
        efi_mp_call ( &data );
}

References data, efi_mp_call(), efi_mp_func_data::func, mp_address(), and efi_mp_func_data::opaque.

Referenced by PROVIDE_MPAPI().

◆ efi_mp_start_all()

void efi_mp_start_all	(	mp_func_t	func,
		void *	opaque )

static

Start a multiprocessor function on all application processors.

Parameters

func	Multiprocessor function
opaque	Opaque data pointer

Definition at line 85 of file efi_mp.c.

                                                              {
        struct efi_mp_func_data data;
        EFI_STATUS efirc;
        int rc;
 
        /* Do nothing if MP services is not present */
        if ( ! efimp ) {
                DBGC ( func, "EFIMP has no multiprocessor services\n" );
                return;
        }
 
        /* Construct call data */
        data.func = mp_address ( func );
        data.opaque = mp_address ( opaque );
 
        /* Start up all application processors */
        if ( ( efirc = efimp->StartupAllAPs ( efimp, efi_mp_call, FALSE, NULL,
                                              0, &data, NULL ) ) != 0 ) {
                rc = -EEFI ( efirc );
                DBGC ( func, "EFIMP could not start APs: %s\n",
                       strerror ( rc ) );
                return;
        }
}