BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Two new fixed PCDs 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.w...@intel.com>
Cc: Hao A Wu <hao.a...@intel.com>
Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com>
---
MdeModulePkg/MdeModulePkg.dec | 9 +++++++++
UefiCpuPkg/UefiCpuPkg.dec | 14 ++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index e840cebe2eae..4474c4d5bd43 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -2065,6 +2065,15 @@ [PcdsDynamic, PcdsDynamicEx]
# @Prompt If there is any test key used by the platform.
gEfiMdeModulePkgTokenSpaceGuid.PcdTestKeyUsed|FALSE|BOOLEAN|0x00030003
+ ## This dynamic PCD holds the base address of the GHCB pool allocation.
+ # @Prompt GHCB Pool Base Address
+ gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbBase|0|UINT64|0x00030007
+
+ ## 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|0x00030008
+
[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.
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec
index a6ebdde1cfb6..005703d8a3e7 100644
--- a/UefiCpuPkg/UefiCpuPkg.dec
+++ b/UefiCpuPkg/UefiCpuPkg.dec
@@ -161,6 +161,14 @@ [PcdsFixedAtBuild]
# @Prompt Specify the count of pre allocated SMM MP tokens per chunk.
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmMpTokenCountPerChunk|64|UINT32|0x30002002
+ ## The base address of the SEC GHCB page used by SEV-ES.
+ # @Prompt SEC GHCB Base Address
+ gUefiCpuPkgTokenSpaceGuid.PcdSecGhcbBase|0|UINT32|0x30002003
+
+ ## The total size of the SEC GHCB page used by SEV-ES.
+ # @Prompt SEC GHCB Size
+ gUefiCpuPkgTokenSpaceGuid.PcdSecGhcbSize|0|UINT32|0x30002004
+
[PcdsFixedAtBuild, PcdsPatchableInModule]
## This value is the CPU Local APIC base address, which aligns the address
on a 4-KByte boundary.
# @Prompt Configure base address of CPU Local APIC
@@ -367,5 +375,11 @@ [PcdsDynamic, PcdsDynamicEx]
# @ValidRange 0x80000001 | 0 - 1
gUefiCpuPkgTokenSpaceGuid.PcdCpuProcTraceOutputScheme|0x0|UINT8|0x60000015
+ ## This dynamic PCD indicates whether SEV-ES is enabled
+ # TRUE - SEV-ES is enabled
+ # FALSE - SEV-ES is not enabled
+ # @Prompt SEV-ES Status
+ gUefiCpuPkgTokenSpaceGuid.PcdSevEsIsEnabled|FALSE|BOOLEAN|0x60000016
+
[UserExtensions.TianoCore."ExtraFiles"]
UefiCpuPkgExtra.uni
--
2.17.1
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