BaseResetShutdown.c

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#include <Base.h>                   // BIT13
 
#include <Library/BaseLib.h>        // CpuDeadLoop()
#include <Library/DebugLib.h>       // ASSERT()
#include <Library/IoLib.h>          // IoOr16()
#include <Library/PciLib.h>         // PciRead16()
#include <Library/ResetSystemLib.h> // ResetShutdown()
#include <OvmfPlatforms.h>          // OVMF_HOSTBRIDGE_DID
 
VOID
EFIAPI
ResetShutdown (
  VOID
  )
{
  UINT16  AcpiPmBaseAddress;
  UINT16  HostBridgeDevId;
 
  AcpiPmBaseAddress = 0;
  HostBridgeDevId   = PciRead16 (OVMF_HOSTBRIDGE_DID);
  switch (HostBridgeDevId) {
    case INTEL_82441_DEVICE_ID:
      AcpiPmBaseAddress = PIIX4_PMBA_VALUE;
      break;
    case INTEL_Q35_MCH_DEVICE_ID:
      AcpiPmBaseAddress = ICH9_PMBASE_VALUE;
      break;
    case CLOUDHV_DEVICE_ID:
      IoWrite8 (CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS, 5 << 2 | 1 << 5);
      CpuDeadLoop ();
    default:
      ASSERT (FALSE);
      CpuDeadLoop ();
  }
 
  IoBitFieldWrite16 (AcpiPmBaseAddress + 4, 10, 13, 0);
  IoOr16 (AcpiPmBaseAddress + 4, BIT13);
  CpuDeadLoop ();
}