From: Tom Lendacky <thomas.lenda...@amd.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
Two new dynamic MdeModulePkg PCDs are needed to support SEV-ES under OVMF:
- 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>
Reviewed-by: Hao A Wu <hao.a...@intel.com>
Signed-off-by: Tom Lendacky <thomas.lenda...@amd.com>
---
MdeModulePkg/MdeModulePkg.dec | 9 +++++++++
MdeModulePkg/MdeModulePkg.uni | 8 ++++++++
2 files changed, 17 insertions(+)
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec
index d7572eedd18c..cb30a7975849 100644
--- a/MdeModulePkg/MdeModulePkg.dec
+++ b/MdeModulePkg/MdeModulePkg.dec
@@ -2063,6 +2063,15 @@ [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 Guest-Hypervisor
Communication Block (GHCB) pool allocation.
+ # @Prompt GHCB Pool Base Address
+ gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbBase|0|UINT64|0x00030007
+
+ ## This dynamic PCD holds the total size of the Guest-Hypervisor
Communication Block (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/MdeModulePkg/MdeModulePkg.uni b/MdeModulePkg/MdeModulePkg.uni
index 5235dee561ad..b8c867379a86 100644
--- a/MdeModulePkg/MdeModulePkg.uni
+++ b/MdeModulePkg/MdeModulePkg.uni
@@ -1303,3 +1303,11 @@
#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdTcgPfpMeasurementRevision_PROMPT
#language en-US "TCG Platform Firmware Profile revision"
#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdTcgPfpMeasurementRevision_HELP
#language en-US "Indicates which TCG Platform Firmware Profile revision the
EDKII firmware follows."
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbBase_PROMPT #language en-US
"Guest-Hypervisor Communication Block (GHCB) Pool Base Address"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbBase_HELP #language en-US
"Used with SEV-ES support to identify an address range that is not to be
encrypted."
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbSize_PROMPT #language en-US
"Guest-Hypervisor Communication Block (GHCB) Pool Base Size"
+
+#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdGhcbSize_HELP #language en-US
"Used with SEV-ES support to identify the size of the address range that is not
to be encrypted."
--
2.27.0
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