CpuMp.c

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#include "CpuDxe.h"
#include "CpuMp.h"
 
EFI_HANDLE  mMpServiceHandle    = NULL;
UINTN       mNumberOfProcessors = 1;
 
EFI_MP_SERVICES_PROTOCOL  mMpServicesTemplate = {
  GetNumberOfProcessors,
  GetProcessorInfo,
  StartupAllAPs,
  StartupThisAP,
  SwitchBSP,
  EnableDisableAP,
  WhoAmI
};
 
EFI_STATUS
EFIAPI
GetNumberOfProcessors (
  IN  EFI_MP_SERVICES_PROTOCOL  *This,
  OUT UINTN                     *NumberOfProcessors,
  OUT UINTN                     *NumberOfEnabledProcessors
  )
{
  if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {
    return EFI_INVALID_PARAMETER;
  }
 
  return MpInitLibGetNumberOfProcessors (
           NumberOfProcessors,
           NumberOfEnabledProcessors
           );
}
 
EFI_STATUS
EFIAPI
GetProcessorInfo (
  IN  EFI_MP_SERVICES_PROTOCOL   *This,
  IN  UINTN                      ProcessorNumber,
  OUT EFI_PROCESSOR_INFORMATION  *ProcessorInfoBuffer
  )
{
  return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer, NULL);
}
 
EFI_STATUS
EFIAPI
StartupAllAPs (
  IN  EFI_MP_SERVICES_PROTOCOL  *This,
  IN  EFI_AP_PROCEDURE          Procedure,
  IN  BOOLEAN                   SingleThread,
  IN  EFI_EVENT                 WaitEvent               OPTIONAL,
  IN  UINTN                     TimeoutInMicroseconds,
  IN  VOID                      *ProcedureArgument      OPTIONAL,
  OUT UINTN                     **FailedCpuList         OPTIONAL
  )
{
  return MpInitLibStartupAllAPs (
           Procedure,
           SingleThread,
           WaitEvent,
           TimeoutInMicroseconds,
           ProcedureArgument,
           FailedCpuList
           );
}
 
EFI_STATUS
EFIAPI
StartupThisAP (
  IN  EFI_MP_SERVICES_PROTOCOL  *This,
  IN  EFI_AP_PROCEDURE          Procedure,
  IN  UINTN                     ProcessorNumber,
  IN  EFI_EVENT                 WaitEvent               OPTIONAL,
  IN  UINTN                     TimeoutInMicroseconds,
  IN  VOID                      *ProcedureArgument      OPTIONAL,
  OUT BOOLEAN                   *Finished               OPTIONAL
  )
{
  return MpInitLibStartupThisAP (
           Procedure,
           ProcessorNumber,
           WaitEvent,
           TimeoutInMicroseconds,
           ProcedureArgument,
           Finished
           );
}
 
EFI_STATUS
EFIAPI
SwitchBSP (
  IN EFI_MP_SERVICES_PROTOCOL  *This,
  IN  UINTN                    ProcessorNumber,
  IN  BOOLEAN                  EnableOldBSP
  )
{
  return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP);
}
 
EFI_STATUS
EFIAPI
EnableDisableAP (
  IN  EFI_MP_SERVICES_PROTOCOL  *This,
  IN  UINTN                     ProcessorNumber,
  IN  BOOLEAN                   EnableAP,
  IN  UINT32                    *HealthFlag OPTIONAL
  )
{
  return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag);
}
 
EFI_STATUS
EFIAPI
WhoAmI (
  IN EFI_MP_SERVICES_PROTOCOL  *This,
  OUT UINTN                    *ProcessorNumber
  )
{
  return MpInitLibWhoAmI (ProcessorNumber);
}
 
VOID
InitializeMpSupport (
  VOID
  )
{
  EFI_STATUS  Status;
  UINTN       NumberOfProcessors;
  UINTN       NumberOfEnabledProcessors;
 
  //
  // Wakeup APs to do initialization
  //
  Status = MpInitLibInitialize ();
  ASSERT_EFI_ERROR (Status);
 
  MpInitLibGetNumberOfProcessors (&NumberOfProcessors, &NumberOfEnabledProcessors);
  mNumberOfProcessors = NumberOfProcessors;
  DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mNumberOfProcessors));
 
  Status = gBS->InstallMultipleProtocolInterfaces (
                  &mMpServiceHandle,
                  &gEfiMpServiceProtocolGuid,
                  &mMpServicesTemplate,
                  NULL
                  );
  ASSERT_EFI_ERROR (Status);
}