SmmCpuPlatformHookLibQemu.c

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#include <Library/BaseLib.h>                 // AsmReadMsr64()
#include <PiSmm.h>
#include <Register/Intel/ArchitecturalMsr.h> // MSR_IA32_APIC_BASE_REGISTER
 
#include <Library/SmmCpuPlatformHookLib.h>
 
BOOLEAN
EFIAPI
PlatformValidSmi (
  VOID
  )
{
  return TRUE;
}
 
BOOLEAN
EFIAPI
ClearTopLevelSmiStatus (
  VOID
  )
{
  return TRUE;
}
 
EFI_STATUS
EFIAPI
PlatformSmmBspElection (
  OUT BOOLEAN  *IsBsp
  )
{
  MSR_IA32_APIC_BASE_REGISTER  ApicBaseMsr;
 
  ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);
  *IsBsp             = (BOOLEAN)(ApicBaseMsr.Bits.BSP == 1);
  return EFI_SUCCESS;
}
 
EFI_STATUS
EFIAPI
GetPlatformPageTableAttribute (
  IN  UINT64                 Address,
  IN OUT SMM_PAGE_SIZE_TYPE  *PageSize,
  IN OUT UINTN               *NumOfPages,
  IN OUT UINTN               *PageAttribute
  )
{
  return EFI_UNSUPPORTED;
}
 
EFI_STATUS
EFIAPI
SmmCpuPlatformHookBeforeMmiHandler (
  VOID
  )
{
  return EFI_UNSUPPORTED;
}