/**
Callback function for ExitBootServices.
@param[in] Event Event whose notification function is being invoked.
@param[in] Context The pointer to the notification function's context,
which is implementation-dependent.
**/
VOID
EFIAPI
MpInitChangeApLoopCallback (
IN EFI_EVENT Event,
IN VOID *Context
)
{
CPU_MP_DATA *CpuMpData;
CpuMpData = GetCpuMpData ();
CpuMpData->PmCodeSegment = GetProtectedModeCS ();
CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);
mNumberToFinish = CpuMpData->CpuCount - 1;
WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL, TRUE);
while (mNumberToFinish > 0) {
CpuPause ();
}
DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));
}
/**
Transfer AP to safe hlt-loop after it finished restore CPU features on S3 patch.
@param[in] ApHltLoopCode The address of the safe hlt-loop function.
@param[in] TopOfStack A pointer to the new stack to use for the ApHltLoopCode.
@param[in] NumberToFinishAddress Address of Semaphore of APs finish count.
**/
VOID
TransferApToSafeState (
IN UINTN ApHltLoopCode,
IN UINTN TopOfStack,
IN UINTN NumberToFinishAddress
)
{
AsmDisablePaging64 (
GetProtectedModeCS (),
(UINT32)ApHltLoopCode,
(UINT32)NumberToFinishAddress,
0,
(UINT32)TopOfStack
);
//
// It should never reach here
//
ASSERT (FALSE);
}
