[edk2-devel] [RFC PATCH v3 01/43] MdePkg: Create PCDs to be used in support of SEV-ES
Lendacky, Thomas
thomas.lendacky at amd.com
Wed Nov 20 20:06:23 UTC 2019
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Two new fixed PCSs are needed to support SEV-ES under OVMF:
- PcdSecGhcbBase UINT64 value that is the base address of the GHCB
used during the SEC phase.
- PcdSecGhcbSize UINT64 value that is the size, in bytes, of the GHCB
area used during the SEC phase.
Three new dynamic PCDs are needed to support SEV-ES under OVMF:
- PcdSevEsIsEnabled: BOOLEAN value used to indicate if SEV-ES is enabled
- PcdGhcbBase: UINT64 value that is the base address of the GHCB
allocation.
- PcdGhcbSize: UINT64 value that is the size, in bytes, of the
GHCB allocation (size is dependent on the number of
APs).
Cc: Jian J Wang <jian.j.wang at intel.com>
Cc: Hao A Wu <hao.a.wu at intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky at amd.com>
---
MdeModulePkg/MdeModulePkg.dec | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index 41b9e70a1ac8..c3bdfcc80971 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -1037,6 +1037,14 @@ [PcdsFixedAtBuild]
# @Prompt Enable UEFI Stack Guard.
gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard|FALSE|BOOLEAN|0x30001055
+ ## The base address of the SEC GHCB page.
+ # @Prompt SEC GHCB Base Address
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSecGhcbBase|0|UINT32|0x30001056
+
+ ## The total size of the SEC GHCB page.
+ # @Prompt SEC GHCB Size
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSecGhcbSize|0|UINT32|0x30001057
+
[PcdsFixedAtBuild, PcdsPatchableInModule]
## Dynamic type PCD can be registered callback function for Pcd setting action.
# PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum number of callback function
@@ -2053,6 +2061,21 @@ [PcdsDynamic, PcdsDynamicEx]
# @Prompt If there is any test key used by the platform.
gEfiMdeModulePkgTokenSpaceGuid.PcdTestKeyUsed|FALSE|BOOLEAN|0x00030003
+ ## This dynamic PCD indicates whether SEV-ES is enabled
+ # TRUE - SEV-ES is enabled
+ # FALSE - SEV-ES is not enabled
+ # @Prompt SEV-ES Status
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSevEsIsEnabled|FALSE|BOOLEAN|0x00030007
+
+ ## This dynamic PCD holds the base address of the GHCB pool allocation.
+ # @Prompt GHCB Pool Base Address
+ gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbBase|0|UINT64|0x00030008
+
+ ## This dynamic PCD holds the total size of the GHCB pool allocation.
+ # The amount of memory allocated for GHCBs is dependent on the number of APs.
+ # @Prompt GHCB Pool Size
+ gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbSize|0|UINT64|0x00030009
+
[PcdsDynamicEx]
## This dynamic PCD enables the default variable setting.
# Its value is the default store ID value. The default value is zero as Standard default.
--
2.17.1
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