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OvmfPkg: set a default value for the WorkAreaHeader PCD

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SEC checks in IsSevGuest if the PCD defined WorkAreaHeader size
matches the size of the WorkAreaHeader struct definition. Set a
default value for the PCD to avoid unnecessary DSC/FDF file
changes in all OVMF DSC/FDF files.

Signed-off-by: Corvin Köhne <c.koehne@beckhoff.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Corvin Köhne 2021-09-17 07:37:24 +02:00 committed by mergify[bot]
parent f334c5a41d
commit 79019c7a42
2 changed files with 6 additions and 1 deletions
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5
OvmfPkg/Include/WorkArea.h
View File

@ -25,6 +25,11 @@ typedef enum {
// to the structure need to be kept in sync with the // to the structure need to be kept in sync with the
// PcdOvmfConfidentialComputingWorkAreaHeader. // PcdOvmfConfidentialComputingWorkAreaHeader.
// //
// PcdOvmfConfidentialComputingWorkAreaHeader ==
// sizeof (CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER)
// PcdOvmfConfidentialComputingWorkAreaHeader defined in:
// OvmfPkg/OvmfPkg.dec
// OvmfPkg/OvmfPkgDefines.fdf.inc
typedef struct _CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER { typedef struct _CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER {
UINT8 GuestType; UINT8 GuestType;
UINT8 Reserved1[3]; UINT8 Reserved1[3];

2
OvmfPkg/OvmfPkg.dec
View File

@ -338,7 +338,7 @@
# The size of this header is used early boot, and is provided through # The size of this header is used early boot, and is provided through
# a fixed PCD. It need to be kept in sync with any changes to the # a fixed PCD. It need to be kept in sync with any changes to the
# header definition. # header definition.
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfConfidentialComputingWorkAreaHeader|0|UINT32|0x51 gUefiOvmfPkgTokenSpaceGuid.PcdOvmfConfidentialComputingWorkAreaHeader|4|UINT32|0x51
[PcdsDynamic, PcdsDynamicEx] [PcdsDynamic, PcdsDynamicEx]