[edk2-devel] [PATCH] OvmfPkg/BhyvePkg: add WorkAreaHeader PCD

[Corvin Köhne]

SEC phase will throw an assertion in IsSevGuest if
PcdOvmfConfidentialComputingWorkAreaHeader doesn't match the
sizeof CONFIDENTIAL_COMPUTING_WORK_AREA_HEADER.

Signed-off-by: Corvin Köhne <c.koehne at beckhoff.com>
---
 OvmfPkg/Bhyve/BhyveDefines.fdf.inc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/OvmfPkg/Bhyve/BhyveDefines.fdf.inc b/OvmfPkg/Bhyve/BhyveDefines.fdf.inc
index 66e0e4d270..9f01ef797c 100644
--- a/OvmfPkg/Bhyve/BhyveDefines.fdf.inc
+++ b/OvmfPkg/Bhyve/BhyveDefines.fdf.inc
@@ -82,4 +82,10 @@ SET gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize = $(BLOCK_SIZ
 SET gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageFtwSpareBase = gUefiOvmfPkgTokenSpaceGuid.PcdOvmfFlashNvStorageFtwWorkingBase + gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
 SET gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize = $(VARS_SPARE_SIZE)

+# The OVMF WorkArea contains a fixed size header followed by the actual data.
+# The size of header is accessed through a fixed PCD in the reset vector code.
+# The value need to be kept in sync with the any changes to the Confidential
+# Computing Work Area header defined in the Include/WorkArea.h
+SET gUefiOvmfPkgTokenSpaceGuid.PcdOvmfConfidentialComputingWorkAreaHeader  = 4
+
 DEFINE MEMFD_BASE_ADDRESS = 0x800000
--
2.11.0

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