/**
Allocate reset vector buffer.
@param[in, out] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
AllocateResetVector (
IN OUT CPU_MP_DATA *CpuMpData
)
{
UINTN ApResetVectorSize;
if (CpuMpData->WakeupBuffer == (UINTN) -1) {
ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +
sizeof (MP_CPU_EXCHANGE_INFO);
CpuMpData->WakeupBuffer = GetWakeupBuffer (ApResetVectorSize);
CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)
(CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);
BackupAndPrepareWakeupBuffer (CpuMpData);
}
if (CpuMpData->SaveRestoreFlag) {
BackupAndPrepareWakeupBuffer (CpuMpData);
}
}
/**
Allocate reset vector buffer.
@param[in, out] CpuMpData The pointer to CPU MP Data structure.
**/
VOID
AllocateResetVector (
IN OUT CPU_MP_DATA *CpuMpData
)
{
EFI_STATUS Status;
UINTN ApResetVectorSize;
EFI_PHYSICAL_ADDRESS StartAddress;
if (CpuMpData->SaveRestoreFlag) {
BackupAndPrepareWakeupBuffer (CpuMpData);
} else {
ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +
sizeof (MP_CPU_EXCHANGE_INFO);
StartAddress = BASE_1MB;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (ApResetVectorSize),
&StartAddress
);
ASSERT_EFI_ERROR (Status);
CpuMpData->WakeupBuffer = (UINTN) StartAddress;
CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)
(CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);
//
// copy AP reset code in it
//
CopyMem (
(VOID *) CpuMpData->WakeupBuffer,
(VOID *) CpuMpData->AddressMap.RendezvousFunnelAddress,
CpuMpData->AddressMap.RendezvousFunnelSize
);
}
}
