03673ae11e
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16353 6f19259b-4bc3-4df7-8a09-765794883524
129 lines
2.9 KiB
C
129 lines
2.9 KiB
C
/** @file
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CPU DXE MP support
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Copyright (c) 2006 - 2014, 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_MP_H_
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#define _CPU_MP_H_
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#include <Protocol/MpService.h>
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#include <Library/SynchronizationLib.h>
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/**
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Initialize Multi-processor support.
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**/
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VOID
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InitializeMpSupport (
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VOID
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);
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typedef
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VOID
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(EFIAPI *STACKLESS_AP_ENTRY_POINT)(
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VOID
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);
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/**
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Starts the Application Processors and directs them to jump to the
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specified routine.
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The processor jumps to this code in flat mode, but the processor's
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stack is not initialized.
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@param ApEntryPoint Pointer to the Entry Point routine
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@retval EFI_SUCCESS The APs were started
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@retval EFI_OUT_OF_RESOURCES Cannot allocate memory to start APs
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**/
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EFI_STATUS
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StartApsStackless (
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IN STACKLESS_AP_ENTRY_POINT ApEntryPoint
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);
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/**
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The AP entry point that the Startup-IPI target code will jump to.
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The processor jumps to this code in flat mode, but the processor's
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stack is not initialized.
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**/
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VOID
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EFIAPI
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AsmApEntryPoint (
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VOID
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);
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/**
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Releases the lock preventing other APs from using the shared AP
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stack.
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Once the AP has transitioned to using a new stack, it can call this
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function to allow another AP to proceed with using the shared stack.
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**/
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VOID
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EFIAPI
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AsmApDoneWithCommonStack (
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VOID
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);
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typedef enum {
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CpuStateIdle,
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CpuStateBlocked,
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CpuStateReady,
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CpuStateBuzy,
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CpuStateFinished
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} CPU_STATE;
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/**
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Define Individual Processor Data block.
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**/
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typedef struct {
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EFI_PROCESSOR_INFORMATION Info;
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SPIN_LOCK CpuDataLock;
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volatile CPU_STATE State;
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EFI_AP_PROCEDURE Procedure;
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VOID *Parameter;
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} CPU_DATA_BLOCK;
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/**
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Define MP data block which consumes individual processor block.
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**/
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typedef struct {
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CPU_DATA_BLOCK *CpuDatas;
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UINTN NumberOfProcessors;
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UINTN NumberOfEnabledProcessors;
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} MP_SYSTEM_DATA;
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/**
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This function is called by all processors (both BSP and AP) once and collects MP related data.
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@param Bsp TRUE if the CPU is BSP
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@param ProcessorNumber The specific processor number
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@retval EFI_SUCCESS Data for the processor collected and filled in
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**/
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EFI_STATUS
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FillInProcessorInformation (
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IN BOOLEAN Bsp,
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IN UINTN ProcessorNumber
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);
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#endif // _CPU_MP_H_
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