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| author | Michael Kinney <michael.d.kinney@intel.com> | 2015-10-19 19:11:15 +0000 |
|---|---|---|
| committer | mdkinney <mdkinney@Edk2> | 2015-10-19 19:11:15 +0000 |
| commit | 2b63446b1dd052f8aef971a5063fac41c22aded0 (patch) | |
| tree | 5ca439251f5ddfac9848b8ca6e49ec7f0a89e753 /UefiCpuPkg/Library/SmmCpuPlatformHookLibNull | |
| parent | a9764e68f91049d5f27cf1ea8a9d448853c77e9e (diff) | |
| download | edk2-2b63446b1dd052f8aef971a5063fac41c22aded0.tar.gz edk2-2b63446b1dd052f8aef971a5063fac41c22aded0.tar.bz2 edk2-2b63446b1dd052f8aef971a5063fac41c22aded0.zip | |
UefiCpuPkg: Add SmmCpuPlatformHookLib
Add SmmCpuPlatformHookLib that provides platform specific functions
that are used to initialize SMM and process SMIs. A Null instance
of this library is provided that should work for most platforms.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18639 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'UefiCpuPkg/Library/SmmCpuPlatformHookLibNull')
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.c | 108 | ||||
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.inf | 40 | ||||
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.uni | bin | 0 -> 1604 bytes |
3 files changed, 148 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.c b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.c new file mode 100644 index 0000000000..efb61fa6f8 --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.c @@ -0,0 +1,108 @@ +/** @file
+SMM CPU Platform Hook NULL library instance.
+
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+#include <PiSmm.h>
+#include <Library/SmmCpuPlatformHookLib.h>
+
+/**
+ Checks if platform produces a valid SMI.
+
+ This function checks if platform produces a valid SMI. This function is
+ called at SMM entry to detect if this is a spurious SMI. This function
+ must be implemented in an MP safe way because it is called by multiple CPU
+ threads.
+
+ @retval TRUE There is a valid SMI
+ @retval FALSE There is no valid SMI
+
+**/
+BOOLEAN
+EFIAPI
+PlatformValidSmi (
+ VOID
+ )
+{
+ return TRUE;
+}
+
+/**
+ Clears platform top level SMI status bit.
+
+ This function clears platform top level SMI status bit.
+
+ @retval TRUE The platform top level SMI status is cleared.
+ @retval FALSE The platform top level SMI status cannot be cleared.
+
+**/
+BOOLEAN
+EFIAPI
+ClearTopLevelSmiStatus (
+ VOID
+ )
+{
+ return TRUE;
+}
+
+/**
+ Performs platform specific way of SMM BSP election.
+
+ This function performs platform specific way of SMM BSP election.
+
+ @param IsBsp Output parameter. TRUE: the CPU this function executes
+ on is elected to be the SMM BSP. FALSE: the CPU this
+ function executes on is to be SMM AP.
+
+ @retval EFI_SUCCESS The function executes successfully.
+ @retval EFI_NOT_READY The function does not determine whether this CPU should be
+ BSP or AP. This may occur if hardware init sequence to
+ enable the determination is yet to be done, or the function
+ chooses not to do BSP election and will let SMM CPU driver to
+ use its default BSP election process.
+ @retval EFI_DEVICE_ERROR The function cannot determine whether this CPU should be
+ BSP or AP due to hardware error.
+
+**/
+EFI_STATUS
+EFIAPI
+PlatformSmmBspElection (
+ OUT BOOLEAN *IsBsp
+ )
+{
+ return EFI_NOT_READY;
+}
+
+/**
+ Get platform page table attribute.
+
+ This function gets page table attribute of platform.
+
+ @param Address Input parameter. Obtain the page table entries attribute on this address.
+ @param PageSize Output parameter. The size of the page.
+ @param NumOfPages Output parameter. Number of page.
+ @param PageAttribute Output parameter. Paging Attributes (WB, UC, etc).
+
+ @retval EFI_SUCCESS The platform page table attribute from the address is determined.
+ @retval EFI_UNSUPPORTED The platform does not support getting page table attribute for the address.
+
+**/
+EFI_STATUS
+EFIAPI
+GetPlatformPageTableAttribute (
+ IN UINT64 Address,
+ IN OUT SMM_PAGE_SIZE_TYPE *PageSize,
+ IN OUT UINTN *NumOfPages,
+ IN OUT UINTN *PageAttribute
+ )
+{
+ return EFI_UNSUPPORTED;
+}
diff --git a/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.inf b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.inf new file mode 100644 index 0000000000..4dea5fb4e1 --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.inf @@ -0,0 +1,40 @@ +## @file
+# SMM CPU Platform Hook NULL library instance.
+#
+# Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+################################################################################
+#
+# Defines Section - statements that will be processed to create a Makefile.
+#
+################################################################################
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = SmmCpuPlatformHookLibNull
+ MODULE_UNI_FILE = SmmCpuPlatformHookLibNull.uni
+ FILE_GUID = D6494E1B-E06F-4ab5-B64D-48B25AA9EB33
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SmmCpuPlatformHookLib
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64
+#
+
+[Sources]
+ SmmCpuPlatformHookLibNull.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ UefiCpuPkg/UefiCpuPkg.dec
diff --git a/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.uni b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.uni Binary files differnew file mode 100644 index 0000000000..9935934a35 --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuPlatformHookLibNull/SmmCpuPlatformHookLibNull.uni |