[PATCH V4 7/8] OvmfPkg/TdxDxe: Set PcdEmuVariableNvStoreReserved


Min Xu
 

From: Min M Xu <min.m.xu@...>

Set PcdEmuVariableNvStoreReserved with the value in PlatformInfoHob. It
is the address of the EmuVariableNvStore reserved in Pei-less startup.

Cc: Erdem Aktas <erdemaktas@...>
Cc: James Bottomley <jejb@...>
Cc: Jiewen Yao <jiewen.yao@...>
Cc: Tom Lendacky <thomas.lendacky@...>
Cc: Gerd Hoffmann <kraxel@...>
Signed-off-by: Min Xu <min.m.xu@...>
---
OvmfPkg/TdxDxe/TdxDxe.c | 2 ++
OvmfPkg/TdxDxe/TdxDxe.inf | 1 +
2 files changed, 3 insertions(+)

diff --git a/OvmfPkg/TdxDxe/TdxDxe.c b/OvmfPkg/TdxDxe/TdxDxe.c
index 2318db989792..837f1f8e3024 100644
--- a/OvmfPkg/TdxDxe/TdxDxe.c
+++ b/OvmfPkg/TdxDxe/TdxDxe.c
@@ -64,6 +64,8 @@ SetPcdSettings (
PlatformInfoHob->PcdCpuBootLogicalProcessorNumber
));

+ PcdSet64S (PcdEmuVariableNvStoreReserved, PlatformInfoHob->PcdEmuVariableNvStoreReserved);
+
if (TdIsEnabled ()) {
PcdStatus = PcdSet64S (PcdTdxSharedBitMask, TdSharedPageMask ());
ASSERT_RETURN_ERROR (PcdStatus);
diff --git a/OvmfPkg/TdxDxe/TdxDxe.inf b/OvmfPkg/TdxDxe/TdxDxe.inf
index a7e0abda1522..3ce8a5c32c98 100644
--- a/OvmfPkg/TdxDxe/TdxDxe.inf
+++ b/OvmfPkg/TdxDxe/TdxDxe.inf
@@ -68,3 +68,4 @@
gEfiMdePkgTokenSpaceGuid.PcdConfidentialComputingGuestAttr
gEfiMdeModulePkgTokenSpaceGuid.PcdTdxSharedBitMask
gEfiMdeModulePkgTokenSpaceGuid.PcdSetNxForStack
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved
--
2.29.2.windows.2