OvmfPkg/ResetVector/ResetVector.nasmb

;------------------------------------------------------------------------------
; @file
; This file includes all other code files to assemble the reset vector code
;
; Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
; Copyright (c) 2020 - 2024, Advanced Micro Devices, Inc. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
;------------------------------------------------------------------------------

;
; If neither ARCH_IA32 nor ARCH_X64 are defined, then try to include
; Base.h to use the C pre-processor to determine the architecture.
;
%ifndef ARCH_IA32
  %ifndef ARCH_X64
    #include <Base.h>
    #if defined (MDE_CPU_IA32)
      %define ARCH_IA32
    #elif defined (MDE_CPU_X64)
      %define ARCH_X64
    #endif
  %endif
%endif

%ifdef ARCH_IA32
  %ifdef ARCH_X64
    %error "Only one of ARCH_IA32 or ARCH_X64 can be defined."
  %endif
%elifdef ARCH_X64
%else
  %error "Either ARCH_IA32 or ARCH_X64 must be defined."
%endif

%include "CommonMacros.inc"

%include "PostCodes.inc"

%ifdef DEBUG_PORT80
  %include "Port80Debug.asm"
%elifdef DEBUG_SERIAL
  %include "SerialDebug.asm"
%elif 0
; Set ^ this to 1 to enable postcodes on the qemu debug console.
; Disabled by default because it is incompatible with SEV-ES/SEV-SNP and TDX.
  %include "QemuDebugCon.asm"
%else
  %include "DebugDisabled.asm"
%endif

%include "Ia32/SearchForBfvBase.asm"
%include "Ia32/SearchForSecEntry.asm"

%define WORK_AREA_GUEST_TYPE          (FixedPcdGet32 (PcdOvmfWorkAreaBase))
%define PT_ADDR(Offset)               (FixedPcdGet32 (PcdOvmfSecPageTablesBase) + (Offset))
%define PG_5_LEVEL                    (FixedPcdGetBool (PcdUse5LevelPageTable))

%define GHCB_PT_ADDR                  (FixedPcdGet32 (PcdOvmfSecGhcbPageTableBase))
%define GHCB_BASE                     (FixedPcdGet32 (PcdOvmfSecGhcbBase))
%define GHCB_SIZE                     (FixedPcdGet32 (PcdOvmfSecGhcbSize))
%define SEV_ES_WORK_AREA              (FixedPcdGet32 (PcdSevEsWorkAreaBase))
%define SEV_ES_WORK_AREA_SIZE         25
%define SEV_ES_WORK_AREA_STATUS_MSR   (FixedPcdGet32 (PcdSevEsWorkAreaBase))
%define SEV_ES_WORK_AREA_RDRAND       (FixedPcdGet32 (PcdSevEsWorkAreaBase) + 8)
%define SEV_ES_WORK_AREA_ENC_MASK     (FixedPcdGet32 (PcdSevEsWorkAreaBase) + 16)
%define SEV_ES_WORK_AREA_RECEIVED_VC  (FixedPcdGet32 (PcdSevEsWorkAreaBase) + 24)
%define SEV_ES_VC_TOP_OF_STACK        (FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + FixedPcdGet32 (PcdOvmfSecPeiTempRamSize))
%define SEV_SNP_SECRETS_BASE          (FixedPcdGet32 (PcdOvmfSnpSecretsBase))
%define SEV_SNP_SECRETS_SIZE          (FixedPcdGet32 (PcdOvmfSnpSecretsSize))
%define CPUID_BASE                    (FixedPcdGet32 (PcdOvmfCpuidBase))
%define CPUID_SIZE                    (FixedPcdGet32 (PcdOvmfCpuidSize))
%define SVSM_CAA_BASE                 (FixedPcdGet32 (PcdOvmfSecSvsmCaaBase))
%define SVSM_CAA_SIZE                 (FixedPcdGet32 (PcdOvmfSecSvsmCaaSize))
%if (FixedPcdGet32 (PcdSevLaunchSecretBase) > 0)
  ; There's a reserved page for SEV secrets and hashes; the VMM will fill and
  ; validate the page, or mark it as a zero page.
  %define SEV_SNP_KERNEL_HASHES_BASE    (FixedPcdGet32 (PcdSevLaunchSecretBase))
  %define SEV_SNP_KERNEL_HASHES_SIZE    (FixedPcdGet32 (PcdSevLaunchSecretSize) + FixedPcdGet32 (PcdQemuHashTableSize))
%else
  %define SEV_SNP_KERNEL_HASHES_BASE    0
  %define SEV_SNP_KERNEL_HASHES_SIZE    0
%endif
%define SNP_SEC_MEM_BASE_DESC_1       (FixedPcdGet32 (PcdOvmfSecPageTablesBase))
%define SNP_SEC_MEM_SIZE_DESC_1       (FixedPcdGet32 (PcdOvmfSecGhcbBase) - SNP_SEC_MEM_BASE_DESC_1)
;
; The PcdOvmfSecGhcbBase reserves two GHCB pages. The first page is used
; as GHCB shared page and second is used for bookkeeping to support the
; nested GHCB in SEC phase. The bookkeeping page is mapped private. The VMM
; does not need to validate the shared page but it need to validate the
; bookkeeping page.
;
%define SNP_SEC_MEM_BASE_DESC_2       (GHCB_BASE + 0x1000)
%define SNP_SEC_MEM_SIZE_DESC_2       (SEV_SNP_SECRETS_BASE - SNP_SEC_MEM_BASE_DESC_2)
%define SNP_SEC_MEM_BASE_DESC_3       (SVSM_CAA_BASE + SVSM_CAA_SIZE + SEV_SNP_KERNEL_HASHES_SIZE)
%define SNP_SEC_MEM_SIZE_DESC_3       (FixedPcdGet32 (PcdOvmfPeiMemFvBase) - SNP_SEC_MEM_BASE_DESC_3)

%ifdef ARCH_X64
  #include <AutoGen.h>

  %if (FixedPcdGet32 (PcdOvmfSecPageTablesSize) != 0x6000)
    %error "This implementation inherently depends on PcdOvmfSecPageTablesSize"
  %endif

  %if (FixedPcdGet32 (PcdOvmfSecGhcbPageTableSize) != 0x1000)
    %error "This implementation inherently depends on PcdOvmfSecGhcbPageTableSize"
  %endif

  %if (FixedPcdGet32 (PcdOvmfSecGhcbSize) != 0x2000)
    %error "This implementation inherently depends on PcdOvmfSecGhcbSize"
  %endif

  %if ((FixedPcdGet32 (PcdOvmfSecGhcbBase) >> 21) != \
       ((FixedPcdGet32 (PcdOvmfSecGhcbBase) + FixedPcdGet32 (PcdOvmfSecGhcbSize) - 1) >> 21))
    %error "This implementation inherently depends on PcdOvmfSecGhcbBase not straddling a 2MB boundary"
  %endif

  %define TDX_BFV_RAW_DATA_OFFSET   FixedPcdGet32 (PcdBfvRawDataOffset)
  %define TDX_BFV_RAW_DATA_SIZE     FixedPcdGet32 (PcdBfvRawDataSize)
  %define TDX_BFV_MEMORY_BASE       FixedPcdGet32 (PcdBfvBase)
  %define TDX_BFV_MEMORY_SIZE       FixedPcdGet32 (PcdBfvRawDataSize)

  %define TDX_CFV_RAW_DATA_OFFSET   FixedPcdGet32 (PcdCfvRawDataOffset)
  %define TDX_CFV_RAW_DATA_SIZE     FixedPcdGet32 (PcdCfvRawDataSize)
  %define TDX_CFV_MEMORY_BASE       FixedPcdGet32 (PcdCfvBase),
  %define TDX_CFV_MEMORY_SIZE       FixedPcdGet32 (PcdCfvRawDataSize),

  %define TDX_HEAP_STACK_BASE       FixedPcdGet32 (PcdOvmfSecPeiTempRamBase)
  %define TDX_HEAP_STACK_SIZE       FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)

  %define TDX_HOB_MEMORY_BASE       FixedPcdGet32 (PcdOvmfSecGhcbBase)
  %define TDX_HOB_MEMORY_SIZE       FixedPcdGet32 (PcdOvmfSecGhcbSize)

  %define TDX_INIT_MEMORY_BASE      FixedPcdGet32 (PcdOvmfWorkAreaBase)
  %define TDX_INIT_MEMORY_SIZE      (FixedPcdGet32 (PcdOvmfWorkAreaSize) + FixedPcdGet32 (PcdOvmfSecGhcbBackupSize))

  %define OVMF_PAGE_TABLE_BASE      FixedPcdGet32 (PcdOvmfSecPageTablesBase)
  %define OVMF_PAGE_TABLE_SIZE      FixedPcdGet32 (PcdOvmfSecPageTablesSize)

  %define TDX_WORK_AREA_PGTBL_READY (FixedPcdGet32 (PcdOvmfWorkAreaBase) + 4)
  %define TDX_WORK_AREA_GPAW        (FixedPcdGet32 (PcdOvmfWorkAreaBase) + 8)

  %include "X64/IntelTdxMetadata.asm"
  %include "Ia32/Flat32ToFlat64.asm"
  %include "Ia32/PageTables64.asm"
  %include "Ia32/IntelTdx.asm"
  %include "X64/OvmfSevMetadata.asm"
%endif

%include "Ia32/AmdSev.asm"

%include "Ia16/Real16ToFlat32.asm"
%include "Ia16/Init16.asm"

%include "Main.asm"

  %define SEV_ES_AP_RESET_IP  FixedPcdGet32 (PcdSevEsWorkAreaBase)
  %define SEV_LAUNCH_SECRET_BASE  FixedPcdGet32 (PcdSevLaunchSecretBase)
  %define SEV_LAUNCH_SECRET_SIZE  FixedPcdGet32 (PcdSevLaunchSecretSize)
  %define SEV_FW_HASH_BLOCK_BASE  FixedPcdGet32 (PcdQemuHashTableBase)
  %define SEV_FW_HASH_BLOCK_SIZE  FixedPcdGet32 (PcdQemuHashTableSize)
%include "Ia16/ResetVectorVtf0.asm"