5986cf382e
GetWakeupBuffer() tries to find a below-1M free memory, it checks whether the memory is allocated already in CheckOverlapWithAllocatedBuffer(). When there is a memory allocation hob (base = 0xff_00000000, size = 0x10000000), CheckOverlapWithAllocateBuffer() truncates the base to 0 which causes it always returns TRUE so GetWakeupBuffer() fails to find a below-1MB memory. The patch fixes this issue by using UINT64 type. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
510 lines
21 KiB
C
510 lines
21 KiB
C
/** @file
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MP initialize support functions for PEI phase.
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Copyright (c) 2016 - 2018, 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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#include "MpLib.h"
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/**
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Enable Debug Agent to support source debugging on AP function.
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**/
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VOID
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EnableDebugAgent (
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VOID
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)
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{
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}
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/**
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Get pointer to CPU MP Data structure.
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@return The pointer to CPU MP Data structure.
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**/
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CPU_MP_DATA *
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GetCpuMpData (
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VOID
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)
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{
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CPU_MP_DATA *CpuMpData;
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CpuMpData = GetCpuMpDataFromGuidedHob ();
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ASSERT (CpuMpData != NULL);
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return CpuMpData;
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}
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/**
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Save the pointer to CPU MP Data structure.
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@param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
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**/
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VOID
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SaveCpuMpData (
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IN CPU_MP_DATA *CpuMpData
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)
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{
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UINT64 Data64;
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//
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// Build location of CPU MP DATA buffer in HOB
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//
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Data64 = (UINT64) (UINTN) CpuMpData;
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BuildGuidDataHob (
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&mCpuInitMpLibHobGuid,
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(VOID *) &Data64,
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sizeof (UINT64)
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);
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}
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/**
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Check if AP wakeup buffer is overlapped with existing allocated buffer.
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@param[in] WakeupBufferStart AP wakeup buffer start address.
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@param[in] WakeupBufferEnd AP wakeup buffer end address.
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@retval TRUE There is overlap.
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@retval FALSE There is no overlap.
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**/
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BOOLEAN
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CheckOverlapWithAllocatedBuffer (
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IN UINT64 WakeupBufferStart,
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IN UINT64 WakeupBufferEnd
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
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BOOLEAN Overlapped;
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UINT64 MemoryStart;
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UINT64 MemoryEnd;
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Overlapped = FALSE;
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//
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// Get the HOB list for processing
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//
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Hob.Raw = GetHobList ();
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//
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// Collect memory ranges
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//
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while (!END_OF_HOB_LIST (Hob)) {
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if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
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MemoryHob = Hob.MemoryAllocation;
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MemoryStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;
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MemoryEnd = MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength;
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if (!((WakeupBufferStart >= MemoryEnd) || (WakeupBufferEnd <= MemoryStart))) {
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Overlapped = TRUE;
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break;
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}
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}
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Hob.Raw = GET_NEXT_HOB (Hob);
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}
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return Overlapped;
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}
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/**
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Get available system memory below 1MB by specified size.
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@param[in] WakeupBufferSize Wakeup buffer size required
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@retval other Return wakeup buffer address below 1MB.
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@retval -1 Cannot find free memory below 1MB.
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**/
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UINTN
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GetWakeupBuffer (
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IN UINTN WakeupBufferSize
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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UINT64 WakeupBufferStart;
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UINT64 WakeupBufferEnd;
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WakeupBufferSize = (WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1);
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//
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// Get the HOB list for processing
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//
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Hob.Raw = GetHobList ();
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//
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// Collect memory ranges
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//
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while (!END_OF_HOB_LIST (Hob)) {
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if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
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if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) &&
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(Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&
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((Hob.ResourceDescriptor->ResourceAttribute &
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(EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |
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EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |
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EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED
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)) == 0)
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) {
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//
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// Need memory under 1MB to be collected here
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//
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WakeupBufferEnd = Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength;
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if (WakeupBufferEnd > BASE_1MB) {
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//
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// Wakeup buffer should be under 1MB
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//
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WakeupBufferEnd = BASE_1MB;
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}
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while (WakeupBufferEnd > WakeupBufferSize) {
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//
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// Wakeup buffer should be aligned on 4KB
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//
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WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1);
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if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) {
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break;
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}
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if (CheckOverlapWithAllocatedBuffer (WakeupBufferStart, WakeupBufferEnd)) {
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//
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// If this range is overlapped with existing allocated buffer, skip it
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// and find the next range
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//
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WakeupBufferEnd -= WakeupBufferSize;
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continue;
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}
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DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n",
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WakeupBufferStart, WakeupBufferSize));
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return (UINTN)WakeupBufferStart;
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}
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}
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}
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//
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// Find the next HOB
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//
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Hob.Raw = GET_NEXT_HOB (Hob);
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}
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return (UINTN) -1;
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}
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/**
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Get available EfiBootServicesCode memory below 4GB by specified size.
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This buffer is required to safely transfer AP from real address mode to
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protected mode or long mode, due to the fact that the buffer returned by
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GetWakeupBuffer() may be marked as non-executable.
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@param[in] BufferSize Wakeup transition buffer size.
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@retval other Return wakeup transition buffer address below 4GB.
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@retval 0 Cannot find free memory below 4GB.
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**/
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UINTN
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GetModeTransitionBuffer (
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IN UINTN BufferSize
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)
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{
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//
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// PEI phase doesn't need to do such transition. So simply return 0.
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//
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return 0;
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}
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/**
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Checks APs status and updates APs status if needed.
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**/
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VOID
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CheckAndUpdateApsStatus (
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VOID
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)
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{
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}
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/**
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Initialize global data for MP support.
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@param[in] CpuMpData The pointer to CPU MP Data structure.
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**/
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VOID
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InitMpGlobalData (
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IN CPU_MP_DATA *CpuMpData
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)
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{
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SaveCpuMpData (CpuMpData);
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}
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/**
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This service executes a caller provided function on all enabled APs.
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@param[in] Procedure A pointer to the function to be run on
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enabled APs of the system. See type
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EFI_AP_PROCEDURE.
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@param[in] SingleThread If TRUE, then all the enabled APs execute
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the function specified by Procedure one by
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one, in ascending order of processor handle
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number. If FALSE, then all the enabled APs
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execute the function specified by Procedure
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simultaneously.
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@param[in] WaitEvent The event created by the caller with CreateEvent()
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service. If it is NULL, then execute in
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blocking mode. BSP waits until all APs finish
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or TimeoutInMicroSeconds expires. If it's
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not NULL, then execute in non-blocking mode.
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BSP requests the function specified by
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Procedure to be started on all the enabled
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APs, and go on executing immediately. If
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all return from Procedure, or TimeoutInMicroSeconds
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expires, this event is signaled. The BSP
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can use the CheckEvent() or WaitForEvent()
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services to check the state of event. Type
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EFI_EVENT is defined in CreateEvent() in
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the Unified Extensible Firmware Interface
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Specification.
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@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
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APs to return from Procedure, either for
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blocking or non-blocking mode. Zero means
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infinity. If the timeout expires before
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all APs return from Procedure, then Procedure
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on the failed APs is terminated. All enabled
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APs are available for next function assigned
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by MpInitLibStartupAllAPs() or
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MPInitLibStartupThisAP().
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If the timeout expires in blocking mode,
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BSP returns EFI_TIMEOUT. If the timeout
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expires in non-blocking mode, WaitEvent
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is signaled with SignalEvent().
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@param[in] ProcedureArgument The parameter passed into Procedure for
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all APs.
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@param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,
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if all APs finish successfully, then its
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content is set to NULL. If not all APs
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finish before timeout expires, then its
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content is set to address of the buffer
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holding handle numbers of the failed APs.
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The buffer is allocated by MP Initialization
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library, and it's the caller's responsibility to
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free the buffer with FreePool() service.
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In blocking mode, it is ready for consumption
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when the call returns. In non-blocking mode,
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it is ready when WaitEvent is signaled. The
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list of failed CPU is terminated by
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END_OF_CPU_LIST.
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@retval EFI_SUCCESS In blocking mode, all APs have finished before
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the timeout expired.
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@retval EFI_SUCCESS In non-blocking mode, function has been dispatched
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to all enabled APs.
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@retval EFI_UNSUPPORTED A non-blocking mode request was made after the
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UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was
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signaled.
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@retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not
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supported.
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@retval EFI_DEVICE_ERROR Caller processor is AP.
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@retval EFI_NOT_STARTED No enabled APs exist in the system.
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@retval EFI_NOT_READY Any enabled APs are busy.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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@retval EFI_TIMEOUT In blocking mode, the timeout expired before
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all enabled APs have finished.
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@retval EFI_INVALID_PARAMETER Procedure is NULL.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibStartupAllAPs (
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IN EFI_AP_PROCEDURE Procedure,
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IN BOOLEAN SingleThread,
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IN EFI_EVENT WaitEvent OPTIONAL,
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IN UINTN TimeoutInMicroseconds,
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IN VOID *ProcedureArgument OPTIONAL,
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OUT UINTN **FailedCpuList OPTIONAL
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)
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{
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if (WaitEvent != NULL) {
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return EFI_UNSUPPORTED;
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}
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return StartupAllAPsWorker (
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Procedure,
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SingleThread,
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NULL,
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TimeoutInMicroseconds,
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ProcedureArgument,
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FailedCpuList
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);
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}
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/**
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This service lets the caller get one enabled AP to execute a caller-provided
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function.
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@param[in] Procedure A pointer to the function to be run on the
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designated AP of the system. See type
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EFI_AP_PROCEDURE.
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@param[in] ProcessorNumber The handle number of the AP. The range is
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from 0 to the total number of logical
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processors minus 1. The total number of
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logical processors can be retrieved by
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MpInitLibGetNumberOfProcessors().
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@param[in] WaitEvent The event created by the caller with CreateEvent()
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service. If it is NULL, then execute in
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blocking mode. BSP waits until this AP finish
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or TimeoutInMicroSeconds expires. If it's
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not NULL, then execute in non-blocking mode.
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BSP requests the function specified by
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Procedure to be started on this AP,
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and go on executing immediately. If this AP
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return from Procedure or TimeoutInMicroSeconds
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expires, this event is signaled. The BSP
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can use the CheckEvent() or WaitForEvent()
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services to check the state of event. Type
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EFI_EVENT is defined in CreateEvent() in
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the Unified Extensible Firmware Interface
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Specification.
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@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
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this AP to finish this Procedure, either for
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blocking or non-blocking mode. Zero means
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infinity. If the timeout expires before
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this AP returns from Procedure, then Procedure
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on the AP is terminated. The
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AP is available for next function assigned
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by MpInitLibStartupAllAPs() or
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MpInitLibStartupThisAP().
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If the timeout expires in blocking mode,
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BSP returns EFI_TIMEOUT. If the timeout
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expires in non-blocking mode, WaitEvent
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is signaled with SignalEvent().
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@param[in] ProcedureArgument The parameter passed into Procedure on the
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specified AP.
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@param[out] Finished If NULL, this parameter is ignored. In
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blocking mode, this parameter is ignored.
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In non-blocking mode, if AP returns from
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Procedure before the timeout expires, its
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content is set to TRUE. Otherwise, the
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value is set to FALSE. The caller can
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determine if the AP returned from Procedure
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by evaluating this value.
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@retval EFI_SUCCESS In blocking mode, specified AP finished before
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the timeout expires.
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@retval EFI_SUCCESS In non-blocking mode, the function has been
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dispatched to specified AP.
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@retval EFI_UNSUPPORTED A non-blocking mode request was made after the
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UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was
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signaled.
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@retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not
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supported.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_TIMEOUT In blocking mode, the timeout expired before
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the specified AP has finished.
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@retval EFI_NOT_READY The specified AP is busy.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.
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@retval EFI_INVALID_PARAMETER Procedure is NULL.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibStartupThisAP (
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IN EFI_AP_PROCEDURE Procedure,
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IN UINTN ProcessorNumber,
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IN EFI_EVENT WaitEvent OPTIONAL,
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IN UINTN TimeoutInMicroseconds,
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IN VOID *ProcedureArgument OPTIONAL,
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OUT BOOLEAN *Finished OPTIONAL
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)
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{
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if (WaitEvent != NULL) {
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return EFI_UNSUPPORTED;
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}
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return StartupThisAPWorker (
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Procedure,
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ProcessorNumber,
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NULL,
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TimeoutInMicroseconds,
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ProcedureArgument,
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Finished
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);
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}
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/**
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. This call can only be performed
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by the current BSP.
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@param[in] ProcessorNumber The handle number of AP that is to become the new
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BSP. The range is from 0 to the total number of
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logical processors minus 1. The total number of
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logical processors can be retrieved by
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MpInitLibGetNumberOfProcessors().
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@param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
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enabled AP. Otherwise, it will be disabled.
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@retval EFI_SUCCESS BSP successfully switched.
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@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
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this service returning.
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@retval EFI_UNSUPPORTED Switching the BSP is not supported.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
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a disabled AP.
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@retval EFI_NOT_READY The specified AP is busy.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibSwitchBSP (
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableOldBSP
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)
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{
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return SwitchBSPWorker (ProcessorNumber, EnableOldBSP);
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}
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/**
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This service lets the caller enable or disable an AP from this point onward.
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This service may only be called from the BSP.
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@param[in] ProcessorNumber The handle number of AP.
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The range is from 0 to the total number of
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logical processors minus 1. The total number of
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logical processors can be retrieved by
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MpInitLibGetNumberOfProcessors().
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@param[in] EnableAP Specifies the new state for the processor for
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enabled, FALSE for disabled.
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@param[in] HealthFlag If not NULL, a pointer to a value that specifies
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the new health status of the AP. This flag
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corresponds to StatusFlag defined in
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EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only
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the PROCESSOR_HEALTH_STATUS_BIT is used. All other
|
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bits are ignored. If it is NULL, this parameter
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is ignored.
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|
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@retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
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@retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed
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prior to this service returning.
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@retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber
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does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibEnableDisableAP (
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableAP,
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IN UINT32 *HealthFlag OPTIONAL
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)
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{
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return EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);
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}
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