/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
SaveCpuMpData (CpuMpData);
//
// Register an event for EndOfPei
//
Status = PeiServicesNotifyPpi (&mMpInitLibNotifyList);
ASSERT_EFI_ERROR (Status);
}
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
SaveCpuMpData (CpuMpData);
///
/// Install Notify
///
Status = PeiServicesNotifyPpi (&mS3SmmInitDoneNotifyDesc);
ASSERT_EFI_ERROR (Status);
}
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
SaveCpuMpData (CpuMpData);
if (CpuMpData->CpuCount == 1) {
//
// If only BSP exists, return
//
return;
}
//
// Register an event for EndOfPei
//
Status = PeiServicesNotifyPpi (&mMpInitLibNotifyList);
ASSERT_EFI_ERROR (Status);
}
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Address;
UINTN ApSafeBufferSize;
UINTN Index;
EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;
UINTN StackBase;
CPU_INFO_IN_HOB *CpuInfoInHob;
SaveCpuMpData (CpuMpData);
if (CpuMpData->CpuCount == 1) {
//
// If only BSP exists, return
//
return;
}
if (PcdGetBool (PcdCpuStackGuard)) {
//
// One extra page at the bottom of the stack is needed for Guard page.
//
if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {
DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));
ASSERT (FALSE);
}
//
// DXE will reuse stack allocated for APs at PEI phase if it's available.
// Let's check it here.
//
// Note: BSP's stack guard is set at DxeIpl phase. But for the sake of
// BSP/AP exchange, stack guard for ApTopOfStack of cpu 0 will still be
// set here.
//
CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;
for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {
if (CpuInfoInHob != NULL && CpuInfoInHob[Index].ApTopOfStack != 0) {
StackBase = (UINTN)CpuInfoInHob[Index].ApTopOfStack - CpuMpData->CpuApStackSize;
} else {
StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;
}
Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);
ASSERT_EFI_ERROR (Status);
Status = gDS->SetMemorySpaceAttributes (
StackBase,
EFI_PAGES_TO_SIZE (1),
MemDesc.Attributes | EFI_MEMORY_RP
);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "Stack Guard set at %lx [cpu%lu]!\n",
(UINT64)StackBase, (UINT64)Index));
}
}
//
// Avoid APs access invalid buffer data which allocated by BootServices,
// so we will allocate reserved data for AP loop code. We also need to
// allocate this buffer below 4GB due to APs may be transferred to 32bit
// protected mode on long mode DXE.
// Allocating it in advance since memory services are not available in
// Exit Boot Services callback function.
//
ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (
CpuMpData->AddressMap.RelocateApLoopFuncSize
));
Address = BASE_4GB - 1;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiReservedMemoryType,
EFI_SIZE_TO_PAGES (ApSafeBufferSize),
&Address
);
ASSERT_EFI_ERROR (Status);
mReservedApLoopFunc = (VOID *) (UINTN) Address;
ASSERT (mReservedApLoopFunc != NULL);
//
// Make sure that the buffer memory is executable if NX protection is enabled
// for EfiReservedMemoryType.
//
// TODO: Check EFI_MEMORY_XP bit set or not once it's available in DXE GCD
// service.
//
Status = gDS->GetMemorySpaceDescriptor (Address, &MemDesc);
if (!EFI_ERROR (Status)) {
gDS->SetMemorySpaceAttributes (
Address,
ApSafeBufferSize,
MemDesc.Attributes & (~EFI_MEMORY_XP)
);
}
ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (
CpuMpData->CpuCount * AP_SAFE_STACK_SIZE
));
Address = BASE_4GB - 1;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiReservedMemoryType,
EFI_SIZE_TO_PAGES (ApSafeBufferSize),
&Address
);
ASSERT_EFI_ERROR (Status);
mReservedTopOfApStack = (UINTN) Address + ApSafeBufferSize;
ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);
CopyMem (
mReservedApLoopFunc,
CpuMpData->AddressMap.RelocateApLoopFuncAddress,
CpuMpData->AddressMap.RelocateApLoopFuncSize
);
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
CheckApsStatus,
NULL,
&mCheckAllApsEvent
);
ASSERT_EFI_ERROR (Status);
//
// Set timer to check all APs status.
//
Status = gBS->SetTimer (
mCheckAllApsEvent,
TimerPeriodic,
AP_CHECK_INTERVAL
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEvent (
EVT_SIGNAL_EXIT_BOOT_SERVICES,
TPL_CALLBACK,
MpInitChangeApLoopCallback,
NULL,
&mMpInitExitBootServicesEvent
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
MpInitChangeApLoopCallback,
NULL,
&gEfiEventLegacyBootGuid,
&mLegacyBootEvent
);
ASSERT_EFI_ERROR (Status);
}
/**
Initialize global data for MP support.
@param[in] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
InitMpGlobalData (
IN CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Address;
UINTN ApSafeBufferSize;
SaveCpuMpData (CpuMpData);
if (CpuMpData->CpuCount == 1) {
//
// If only BSP exists, return
//
return;
}
//
// Avoid APs access invalid buffer data which allocated by BootServices,
// so we will allocate reserved data for AP loop code. We also need to
// allocate this buffer below 4GB due to APs may be transferred to 32bit
// protected mode on long mode DXE.
// Allocating it in advance since memory services are not available in
// Exit Boot Services callback function.
//
ApSafeBufferSize = CpuMpData->AddressMap.RelocateApLoopFuncSize;
ApSafeBufferSize += CpuMpData->CpuCount * AP_SAFE_STACK_SIZE;
Address = BASE_4GB - 1;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiReservedMemoryType,
EFI_SIZE_TO_PAGES (ApSafeBufferSize),
&Address
);
ASSERT_EFI_ERROR (Status);
mReservedApLoopFunc = (VOID *) (UINTN) Address;
ASSERT (mReservedApLoopFunc != NULL);
mReservedTopOfApStack = (UINTN) Address + EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (ApSafeBufferSize));
ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);
CopyMem (
mReservedApLoopFunc,
CpuMpData->AddressMap.RelocateApLoopFuncAddress,
CpuMpData->AddressMap.RelocateApLoopFuncSize
);
Status = gBS->CreateEvent (
EVT_TIMER | EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
CheckApsStatus,
NULL,
&mCheckAllApsEvent
);
ASSERT_EFI_ERROR (Status);
//
// Set timer to check all APs status.
//
Status = gBS->SetTimer (
mCheckAllApsEvent,
TimerPeriodic,
AP_CHECK_INTERVAL
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEvent (
EVT_SIGNAL_EXIT_BOOT_SERVICES,
TPL_CALLBACK,
MpInitChangeApLoopCallback,
NULL,
&mMpInitExitBootServicesEvent
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
MpInitChangeApLoopCallback,
NULL,
&gEfiEventLegacyBootGuid,
&mLegacyBootEvent
);
ASSERT_EFI_ERROR (Status);
}
