Introduce the MorLockInitAtEndOfDxe() hook, in order to allow
MorLockInit() to delay / queue operations until EndOfDxe. (Or, if the
platform never signals EndOfDxe, until ReadyToBoot.)
Call MorLockInitAtEndOfDxe() whenever we set "mEndOfDxe" to TRUE:
- in VariableRuntimeDxe:
- in the OnReadyToBoot() function,
- in the OnEndOfDxe() function;
- in VariableSmm:
- on the SMM_VARIABLE_FUNCTION_READY_TO_BOOT SMI request,
- in the SmmEndOfDxeCallback() function.
For now, implement MorLockInitAtEndOfDxe() as a no-op in both
VariableRuntimeDxe and VariableSmm.
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Ladi Prosek <lprosek@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
---
MdeModulePkg/Universal/Variable/RuntimeDxe/PrivilegePolymorphic.h | 10 ++++++++++
MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c | 15 +++++++++++++++
MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c | 15 +++++++++++++++
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c | 2 ++
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c | 2 ++
5 files changed, 44 insertions(+)
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/PrivilegePolymorphic.h b/MdeModulePkg/Universal/Variable/RuntimeDxe/PrivilegePolymorphic.h
index 1118f4b52e49..759e47db7f29 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/PrivilegePolymorphic.h
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/PrivilegePolymorphic.h
@@ -46,6 +46,16 @@ MorLockInit (
VOID
);
+/**
+ Delayed initialization for MOR Control Lock at EndOfDxe.
+
+ This function performs any operations queued by MorLockInit().
+**/
+VOID
+MorLockInitAtEndOfDxe (
+ VOID
+ );
+
/**
This service is an MOR/MorLock checker handler for the SetVariable().
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c
index ab3e5d416cd4..a91fc42ff465 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockDxe.c
@@ -91,3 +91,18 @@ MorLockInit (
VariableLockRequestToLock (&mVariableLock, MEMORY_OVERWRITE_REQUEST_CONTROL_LOCK_NAME, &gEfiMemoryOverwriteRequestControlLockGuid);
return EFI_SUCCESS;
}
+
+/**
+ Delayed initialization for MOR Control Lock at EndOfDxe.
+
+ This function performs any operations queued by MorLockInit().
+**/
+VOID
+MorLockInitAtEndOfDxe (
+ VOID
+ )
+{
+ //
+ // Do nothing.
+ //
+}
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c
index 390c8fde4bd4..24b7ffb84ce7 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/TcgMorLockSmm.c
@@ -396,3 +396,18 @@ MorLockInit (
//
return SetMorLockVariable (0);
}
+
+/**
+ Delayed initialization for MOR Control Lock at EndOfDxe.
+
+ This function performs any operations queued by MorLockInit().
+**/
+VOID
+MorLockInitAtEndOfDxe (
+ VOID
+ )
+{
+ //
+ // Do nothing.
+ //
+}
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
index fe1b2b588cb9..b2a373cf98aa 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
@@ -291,6 +291,7 @@ OnReadyToBoot (
)
{
if (!mEndOfDxe) {
+ MorLockInitAtEndOfDxe ();
//
// Set the End Of DXE bit in case the EFI_END_OF_DXE_EVENT_GROUP_GUID event is not signaled.
//
@@ -330,6 +331,7 @@ OnEndOfDxe (
)
{
DEBUG ((EFI_D_INFO, "[Variable]END_OF_DXE is signaled\n"));
+ MorLockInitAtEndOfDxe ();
mEndOfDxe = TRUE;
mVarCheckAddressPointer = VarCheckLibInitializeAtEndOfDxe (&mVarCheckAddressPointerCount);
//
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
index 2184634f3544..8d73b6edee51 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableSmm.c
@@ -679,6 +679,7 @@ SmmVariableHandler (
break;
}
if (!mEndOfDxe) {
+ MorLockInitAtEndOfDxe ();
mEndOfDxe = TRUE;
VarCheckLibInitializeAtEndOfDxe (NULL);
//
@@ -811,6 +812,7 @@ SmmEndOfDxeCallback (
)
{
DEBUG ((EFI_D_INFO, "[Variable]SMM_END_OF_DXE is signaled\n"));
+ MorLockInitAtEndOfDxe ();
mEndOfDxe = TRUE;
VarCheckLibInitializeAtEndOfDxe (NULL);
//
--
2.14.1.3.gb7cf6e02401b
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