diff options
| author | Michael Kinney <michael.d.kinney@intel.com> | 2016-11-29 06:36:51 +0800 |
|---|---|---|
| committer | Feng Tian <feng.tian@intel.com> | 2016-12-19 09:32:43 +0800 |
| commit | 09119a00cccaa08b28b7e2449998ba4c7aa4b0f8 (patch) | |
| tree | 3b07c9a53b4c604899a2095b287d5295891d155c /UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h | |
| parent | 4c6351db25eaf24335933ce3499258d7b48a57b2 (diff) | |
| download | edk2-platforms-09119a00cccaa08b28b7e2449998ba4c7aa4b0f8.tar.xz | |
UefiCpuPkg/SmmCpuFeaturesLibStm: Add STM library instance
Add a new instances of the SmmCpuFeaturesLib that is used by
platforms to enable the SMI Transfer Monitor(STM) feature.
This new instance is in the same directory as the default
SmmCpuFeaturesLib instance in order to share source files.
The DSC file is updated to build both SmmCpuFeatureLib
instances and to build two versions of the PiSmmCpuDxeSmm
module using each of the SmmCpuFeatureLib instances.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Diffstat (limited to 'UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h')
| -rw-r--r-- | UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h new file mode 100644 index 0000000000..92a4dc00eb --- /dev/null +++ b/UefiCpuPkg/Library/SmmCpuFeaturesLib/SmmStm.h @@ -0,0 +1,176 @@ +/** @file
+ SMM STM support
+
+ Copyright (c) 2015 - 2016, 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.
+
+**/
+
+#ifndef _SMM_STM_H_
+#define _SMM_STM_H_
+
+#include <Protocol/SmMonitorInit.h>
+
+/**
+
+ Create 4G page table for STM.
+ 2M PAE page table in X64 version.
+
+ @param PageTableBase The page table base in MSEG
+
+**/
+VOID
+StmGen4GPageTable (
+ IN UINTN PageTableBase
+ );
+
+/**
+ This is SMM exception handle.
+ Consumed by STM when exception happen.
+
+ @param Context STM protection exception stack frame
+
+ @return the EBX value for STM reference.
+ EBX = 0: resume SMM guest using register state found on exception stack.
+ EBX = 1 to 0x0F: EBX contains a BIOS error code which the STM must record in the
+ TXT.ERRORCODE register and subsequently reset the system via
+ TXT.CMD.SYS_RESET. The value of the TXT.ERRORCODE register is calculated as
+ follows: TXT.ERRORCODE = (EBX & 0x0F) | STM_CRASH_BIOS_PANIC
+ EBX = 0x10 to 0xFFFFFFFF - reserved, do not use.
+
+**/
+UINT32
+EFIAPI
+SmmStmExceptionHandler (
+ IN OUT STM_PROTECTION_EXCEPTION_STACK_FRAME Context
+ );
+
+
+/**
+
+ Get STM state.
+
+ @return STM state
+
+**/
+EFI_SM_MONITOR_STATE
+EFIAPI
+GetMonitorState (
+ VOID
+ );
+
+/**
+
+ Load STM image to MSEG.
+
+ @param StmImage STM image
+ @param StmImageSize STM image size
+
+ @retval EFI_SUCCESS Load STM to MSEG successfully
+ @retval EFI_BUFFER_TOO_SMALL MSEG is smaller than minimal requirement of STM image
+
+**/
+EFI_STATUS
+EFIAPI
+LoadMonitor (
+ IN EFI_PHYSICAL_ADDRESS StmImage,
+ IN UINTN StmImageSize
+ );
+
+/**
+
+ Add resources in list to database. Allocate new memory areas as needed.
+
+ @param ResourceList A pointer to resource list to be added
+ @param NumEntries Optional number of entries.
+ If 0, list must be terminated by END_OF_RESOURCES.
+
+ @retval EFI_SUCCESS If resources are added
+ @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer
+ @retval EFI_OUT_OF_RESOURCES If nested procedure returned it and we cannot allocate more areas.
+
+**/
+EFI_STATUS
+EFIAPI
+AddPiResource (
+ IN STM_RSC *ResourceList,
+ IN UINT32 NumEntries OPTIONAL
+ );
+
+/**
+
+ Delete resources in list to database.
+
+ @param ResourceList A pointer to resource list to be deleted
+ NULL means delete all resources.
+ @param NumEntries Optional number of entries.
+ If 0, list must be terminated by END_OF_RESOURCES.
+
+ @retval EFI_SUCCESS If resources are deleted
+ @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer
+
+**/
+EFI_STATUS
+EFIAPI
+DeletePiResource (
+ IN STM_RSC *ResourceList,
+ IN UINT32 NumEntries OPTIONAL
+ );
+
+/**
+
+ Get BIOS resources.
+
+ @param ResourceList A pointer to resource list to be filled
+ @param ResourceSize On input it means size of resource list input.
+ On output it means size of resource list filled,
+ or the size of resource list to be filled if size of too small.
+
+ @retval EFI_SUCCESS If resources are returned.
+ @retval EFI_BUFFER_TOO_SMALL If resource list buffer is too small to hold the whole resources.
+
+**/
+EFI_STATUS
+EFIAPI
+GetPiResource (
+ OUT STM_RSC *ResourceList,
+ IN OUT UINT32 *ResourceSize
+ );
+
+/**
+ This functin initialize STM configuration table.
+**/
+VOID
+StmSmmConfigurationTableInit (
+ VOID
+ );
+
+/**
+ This function notify STM resource change.
+
+ @param StmResource BIOS STM resource
+
+**/
+VOID
+NotifyStmResourceChange (
+ IN VOID *StmResource
+ );
+
+/**
+ This function return BIOS STM resource.
+
+ @return BIOS STM resource
+
+**/
+VOID *
+GetStmResource (
+ VOID
+ );
+
+#endif
|