diff options
| author | Jiewen Yao <jiewen.yao@intel.com> | 2017-11-22 22:05:07 +0800 |
|---|---|---|
| committer | Jiewen Yao <jiewen.yao@intel.com> | 2018-07-26 23:06:43 +0800 |
| commit | 818d60f48b2f5ed1f930705e013e0cabc04bb3dd (patch) | |
| tree | e9ad3c29ec708aece2b8f84cbdc0ee4843c17bde | |
| parent | 1f71fd55b3612cf28e4dddccb9ecd2e4918b3378 (diff) | |
| download | edk2-818d60f48b2f5ed1f930705e013e0cabc04bb3dd.tar.gz edk2-818d60f48b2f5ed1f930705e013e0cabc04bb3dd.tar.bz2 edk2-818d60f48b2f5ed1f930705e013e0cabc04bb3dd.zip | |
MdeModulePkg/DxeCore: Install UEFI mem attrib table at EndOfDxe.
So that the SMM can consume it to set page protection for
the UEFI runtime page with EFI_MEMORY_RO attribute.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
| -rw-r--r-- | MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c b/MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c index 35156aea14..ec8fec2a42 100644 --- a/MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c +++ b/MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c @@ -241,6 +241,23 @@ InstallMemoryAttributesTableOnReadyToBoot ( }
/**
+ Install initial MemoryAttributesTable on EndOfDxe.
+ Then SMM can consume this information.
+
+ @param[in] Event The Event this notify function registered to.
+ @param[in] Context Pointer to the context data registered to the Event.
+**/
+VOID
+EFIAPI
+InstallMemoryAttributesTableOnEndOfDxe (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ InstallMemoryAttributesTable ();
+}
+
+/**
Initialize MemoryAttrubutesTable support.
**/
VOID
@@ -251,18 +268,35 @@ CoreInitializeMemoryAttributesTable ( {
EFI_STATUS Status;
EFI_EVENT ReadyToBootEvent;
+ EFI_EVENT EndOfDxeEvent;
//
// Construct the table at ReadyToBoot.
//
Status = CoreCreateEventInternal (
EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK - 1,
+ TPL_CALLBACK,
InstallMemoryAttributesTableOnReadyToBoot,
NULL,
&gEfiEventReadyToBootGuid,
&ReadyToBootEvent
);
ASSERT_EFI_ERROR (Status);
+
+ //
+ // Construct the initial table at EndOfDxe,
+ // then SMM can consume this information.
+ // Use TPL_NOTIFY here, as such SMM code (TPL_CALLBACK)
+ // can run after it.
+ //
+ Status = CoreCreateEventInternal (
+ EVT_NOTIFY_SIGNAL,
+ TPL_NOTIFY,
+ InstallMemoryAttributesTableOnEndOfDxe,
+ NULL,
+ &gEfiEndOfDxeEventGroupGuid,
+ &EndOfDxeEvent
+ );
+ ASSERT_EFI_ERROR (Status);
return ;
}
|