diff options
| -rw-r--r-- | OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm | 14 | ||||
| -rw-r--r-- | OvmfPkg/ResetVector/ResetVector.nasmb | 1 | ||||
| -rw-r--r-- | OvmfPkg/ResetVector/X64/OvmfSevMetadata.asm | 34 |
3 files changed, 49 insertions, 0 deletions
diff --git a/OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm b/OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm index dee2e3f9de..12f2cedd67 100644 --- a/OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm +++ b/OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm @@ -64,6 +64,20 @@ tdxMetadataOffsetStart: DB 0x86, 0x5e, 0x46, 0x85, 0xa7, 0xbf, 0x8e, 0xc2
tdxMetadataOffsetEnd:
+;
+; SEV metadata descriptor
+;
+; Provide the start offset of the metadata blob within the OVMF binary.
+
+; GUID : dc886566-984a-4798-A75e-5585a7bf67cc
+;
+OvmfSevMetadataOffsetStart:
+ DD (fourGigabytes - OvmfSevMetadataGuid)
+ DW OvmfSevMetadataOffsetEnd - OvmfSevMetadataOffsetStart
+ DB 0x66, 0x65, 0x88, 0xdc, 0x4a, 0x98, 0x98, 0x47
+ DB 0xA7, 0x5e, 0x55, 0x85, 0xa7, 0xbf, 0x67, 0xcc
+OvmfSevMetadataOffsetEnd:
+
%endif
; SEV Hash Table Block
diff --git a/OvmfPkg/ResetVector/ResetVector.nasmb b/OvmfPkg/ResetVector/ResetVector.nasmb index 87effedb9c..d847794fea 100644 --- a/OvmfPkg/ResetVector/ResetVector.nasmb +++ b/OvmfPkg/ResetVector/ResetVector.nasmb @@ -109,6 +109,7 @@ %include "Ia32/AmdSev.asm"
%include "Ia32/PageTables64.asm"
%include "Ia32/IntelTdx.asm"
+%include "X64/OvmfSevMetadata.asm"
%endif
%include "Ia16/Real16ToFlat32.asm"
diff --git a/OvmfPkg/ResetVector/X64/OvmfSevMetadata.asm b/OvmfPkg/ResetVector/X64/OvmfSevMetadata.asm new file mode 100644 index 0000000000..9d8c3e8194 --- /dev/null +++ b/OvmfPkg/ResetVector/X64/OvmfSevMetadata.asm @@ -0,0 +1,34 @@ +;-----------------------------------------------------------------------------
+; @file
+; OVMF metadata for the AMD SEV confidential computing guests
+;
+; Copyright (c) 2021, AMD Inc. All rights reserved.<BR>
+;
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;-----------------------------------------------------------------------------
+
+BITS 64
+
+%define OVMF_SEV_METADATA_VERSION 1
+
+; The section must be accepted or validated by the VMM before the boot
+%define OVMF_SECTION_TYPE_SNP_SEC_MEM 0x1
+
+ALIGN 16
+
+TIMES (15 - ((OvmfSevGuidedStructureEnd - OvmfSevGuidedStructureStart + 15) % 16)) DB 0
+
+OvmfSevGuidedStructureStart:
+;
+; OvmfSev metadata descriptor
+;
+OvmfSevMetadataGuid:
+
+_DescriptorSev:
+ DB 'A','S','E','V' ; Signature
+ DD OvmfSevGuidedStructureEnd - _DescriptorSev ; Length
+ DD OVMF_SEV_METADATA_VERSION ; Version
+ DD (OvmfSevGuidedStructureEnd - _DescriptorSev - 16) / 12 ; Number of sections
+
+OvmfSevGuidedStructureEnd:
+ ALIGN 16
|