diff options
| author | Yao, Jiewen <jiewen.yao@intel.com> | 2015-11-27 13:48:08 +0000 |
|---|---|---|
| committer | Hao Wu <hao.a.wu@intel.com> | 2016-02-25 09:12:37 +0800 |
| commit | 4bae35fe63638213a978ae545728b3ec2642b46b (patch) | |
| tree | ec40be3ffbee4246964681a8b02454f1c1615722 /UefiCpuPkg/Library | |
| parent | c466f5d9ebd7c18fbfebf16ccaeab2680ee7ea03 (diff) | |
| download | edk2-platforms-4bae35fe63638213a978ae545728b3ec2642b46b.tar.xz | |
UefiCpuPkg/PiSmmCpu: Add NULL func for 2 new APIs in SmmCpuFeaturesLib.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com>
Reviewed-by: "Kinney, Michael D" <michael.d.kinney@intel.com>
Cc: "Fan, Jeff" <jeff.fan@intel.com>
Cc: "Kinney, Michael D" <michael.d.kinney@intel.com>
Cc: "Laszlo Ersek" <lersek@redhat.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18980 6f19259b-4bc3-4df7-8a09-765794883524
(cherry picked from commit b095a5403b1dd2ad7af153069f3729716a864e80)
Diffstat (limited to 'UefiCpuPkg/Library')
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c index b839d3192f..3e480e1761 100644 --- a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c @@ -615,3 +615,44 @@ 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.
+
+ This API can be called more once to allocate memory for 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;
+}
+
|