Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen....@intel.com>
Cc: "Fan, Jeff" <jeff....@intel.com>
Cc: "Kinney, Michael D" <michael.d.kin...@intel.com>
---
.../Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c | 39 ++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
index b839d31..d193f6c 100644
--- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
+++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c
@@ -615,3 +615,42 @@ SmmCpuFeaturesWriteSaveStateRegister (
{
return EFI_UNSUPPORTED;
}
+
+/**
+ This function is hook point called after the gEfiSmmReadyToLockProtocolGuid
+ notification is completely processed.
+**/
+VOID
+EFIAPI
+SmmCpuFeaturesCompleteSmmReadyToLock (
+ VOID
+ )
+{
+}
+
+/**
+ This API provides a method for a CPU to allocate a specific region for
storing page tables.
+
+ Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns
a pointer to the
+ allocated buffer. The buffer returned is aligned on a 4KB boundary. If
Pages is 0, then NULL
+ is returned. If there is not enough memory remaining to satisfy the
request, then NULL is
+ returned.
+
+ This function can also return NULL if there is no preference on where the
page tables are allocated in SMRAM.
+
+ @param Pages The number of 4 KB pages to allocate.
+
+ @return A pointer to the allocated buffer for page tables.
+ @retval NULL Fail to allocate a specific region for storing page tables,
+ Or there is no preference on where the page tables are
allocated in SMRAM.
+
+**/
+VOID *
+EFIAPI
+SmmCpuFeaturesAllocatePageTableMemory (
+ IN UINTN Pages
+ )
+{
+ return NULL;
+}
+
--
1.9.5.msysgit.0
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