UefiCpuPkg/MpInitLib: Use SEV-SNP AP Creation NAE event to launch APs

[mirror_edk2.git] / UefiCpuPkg / Library / MpInitLib / Ia32 / AmdSev.c

/** @file\r
\r
  AMD SEV helper function.\r
\r
  Copyright (c) 2021, AMD Incorporated. All rights reserved.<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "MpLib.h"\r
\r
/**\r
  Create an SEV-SNP AP save area (VMSA) for use in running the vCPU.\r
\r
  @param[in]  CpuMpData        Pointer to CPU MP Data\r
  @param[in]  CpuData          Pointer to CPU AP Data\r
  @param[in]  ApicId           APIC ID of the vCPU\r
**/\r
VOID\r
SevSnpCreateSaveArea (\r
  IN CPU_MP_DATA  *CpuMpData,\r
  IN CPU_AP_DATA  *CpuData,\r
  UINT32          ApicId\r
  )\r
{\r
  //\r
  // SEV-SNP is not support on 32-bit build.\r
  //\r
  ASSERT (FALSE);\r
}\r
\r
/**\r
  Create SEV-SNP APs.\r
\r
  @param[in]  CpuMpData        Pointer to CPU MP Data\r
  @param[in]  ProcessorNumber  The handle number of specified processor\r
                               (-1 for all APs)\r
**/\r
VOID\r
SevSnpCreateAP (\r
  IN CPU_MP_DATA  *CpuMpData,\r
  IN INTN         ProcessorNumber\r
  )\r
{\r
  //\r
  // SEV-SNP is not support on 32-bit build.\r
  //\r
  ASSERT (FALSE);\r
}\r
\r
/**\r
  Issue RMPADJUST to adjust the VMSA attribute of an SEV-SNP page.\r
\r
  @param[in]  PageAddress\r
  @param[in]  VmsaPage\r
\r
  @return  RMPADJUST return value\r
**/\r
UINT32\r
SevSnpRmpAdjust (\r
  IN  EFI_PHYSICAL_ADDRESS  PageAddress,\r
  IN  BOOLEAN               VmsaPage\r
  )\r
{\r
  //\r
  // RMPADJUST is not supported in 32-bit mode\r
  //\r
  return RETURN_UNSUPPORTED;\r
}\r