tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Jiewen Yao 2017-11-22 22:05:07 +08:00
parent ac6613db46
commit b2305dd277
1 changed files with 35 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
MdeModulePkg/Core/Dxe/Misc/MemoryAttributesTable.c
View File

@ -240,6 +240,23 @@ InstallMemoryAttributesTableOnReadyToBoot (
mMemoryAttributesTableReadyToBoot = TRUE;
}
/**
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.
**/
@ -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 ;
}