From: Min M Xu <min.m...@intel.com>
EmuVariableNvStore is reserved and init with below 2 functions defined in
PlatformInitLib:
- PlatformReserveEmuVariableNvStore
- PlatformInitEmuVariableNvStore
PlatformInitEmuVariableNvStore works when secure boot feature is enabled.
This is because secure boot needs the EFI variables (PK/KEK/DB/DBX, etc)
and EmuVariableNvStore is cleared when OVMF is launched with -bios
parameter.
Cc: Erdem Aktas <erdemak...@google.com>
Cc: James Bottomley <j...@linux.ibm.com> [jejb]
Cc: Jiewen Yao <jiewen....@intel.com> [jyao1]
Cc: Tom Lendacky <thomas.lenda...@amd.com> [tlendacky]
Cc: Gerd Hoffmann <kra...@redhat.com>
Signed-off-by: Min Xu <min.m...@intel.com>
---
OvmfPkg/Library/PeilessStartupLib/PeilessStartup.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/OvmfPkg/Library/PeilessStartupLib/PeilessStartup.c
b/OvmfPkg/Library/PeilessStartupLib/PeilessStartup.c
index fdfefd00d732..663d5dacd3da 100644
--- a/OvmfPkg/Library/PeilessStartupLib/PeilessStartup.c
+++ b/OvmfPkg/Library/PeilessStartupLib/PeilessStartup.c
@@ -42,6 +42,7 @@ InitializePlatform (
)
{
UINT32 LowerMemorySize;
+ VOID *VariableStore;
DEBUG ((DEBUG_INFO, "InitializePlatform in Pei-less boot\n"));
PlatformDebugDumpCmos ();
@@ -79,6 +80,12 @@ InitializePlatform (
LowerMemorySize
));
+ VariableStore =
PlatformReserveEmuVariableNvStore ();
+ PlatformInfoHob->PcdEmuVariableNvStoreReserved =
(UINT64)(UINTN)VariableStore;
+ #ifdef SECURE_BOOT_FEATURE_ENABLED
+ PlatformInitEmuVariableNvStore (VariableStore);
+ #endif
+
if (TdIsEnabled ()) {
PlatformTdxPublishRamRegions ();
} else {
--
2.29.2.windows.2
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