diff options
| -rw-r--r-- | MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.c | 39 | ||||
| -rw-r--r-- | MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf | 1 |
2 files changed, 40 insertions, 0 deletions
diff --git a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.c b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.c index 38be18560..4960df755 100644 --- a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.c +++ b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.c @@ -30,6 +30,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. SMM_LOCK_BOX_CONTEXT mSmmLockBoxContext;
LIST_ENTRY mLockBoxQueue = INITIALIZE_LIST_HEAD_VARIABLE (mLockBoxQueue);
+BOOLEAN mSmmConfigurationTableInstalled = FALSE;
+
/**
This function return SmmLockBox context from SMST.
@@ -114,6 +116,7 @@ SmmLockBoxSmmConstructor ( sizeof(mSmmLockBoxContext)
);
ASSERT_EFI_ERROR (Status);
+ mSmmConfigurationTableInstalled = TRUE;
DEBUG ((EFI_D_INFO, "SmmLockBoxSmmLib SmmLockBoxContext - %x\n", (UINTN)&mSmmLockBoxContext));
DEBUG ((EFI_D_INFO, "SmmLockBoxSmmLib LockBoxDataAddress - %x\n", (UINTN)&mLockBoxQueue));
@@ -123,6 +126,42 @@ SmmLockBoxSmmConstructor ( }
/**
+ Destructor for SmmLockBox library.
+ This is used to uninstall SmmLockBoxCommunication configuration table
+ if it has been installed in Constructor.
+
+ @param[in] ImageHandle Image handle of this driver.
+ @param[in] SystemTable A Pointer to the EFI System Table.
+
+ @retval EFI_SUCEESS The destructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+SmmLockBoxSmmDestructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ DEBUG ((EFI_D_INFO, "SmmLockBoxSmmLib SmmLockBoxSmmDestructor in %a module\n", gEfiCallerBaseName));
+
+ if (mSmmConfigurationTableInstalled) {
+ Status = gSmst->SmmInstallConfigurationTable (
+ gSmst,
+ &gEfiSmmLockBoxCommunicationGuid,
+ NULL,
+ 0
+ );
+ ASSERT_EFI_ERROR (Status);
+ DEBUG ((EFI_D_INFO, "SmmLockBoxSmmLib uninstall SmmLockBoxCommunication configuration table\n"));
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
This function return SmmLockBox queue address.
@return SmmLockBox queue address.
diff --git a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf index d722f57a6..eb7ba0bb2 100644 --- a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf +++ b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxSmmLib.inf @@ -23,6 +23,7 @@ VERSION_STRING = 1.0
LIBRARY_CLASS = LockBoxLib|DXE_SMM_DRIVER
CONSTRUCTOR = SmmLockBoxSmmConstructor
+ DESTRUCTOR = SmmLockBoxSmmDestructor
#
# The following information is for reference only and not required by the build tools.
|