diff options
Diffstat (limited to 'EdkCompatibilityPkg/Compatibility/SmmAccess2OnSmmAccessThunk/SmmAccess2OnSmmAccessThunk.c')
| -rw-r--r-- | EdkCompatibilityPkg/Compatibility/SmmAccess2OnSmmAccessThunk/SmmAccess2OnSmmAccessThunk.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/SmmAccess2OnSmmAccessThunk/SmmAccess2OnSmmAccessThunk.c b/EdkCompatibilityPkg/Compatibility/SmmAccess2OnSmmAccessThunk/SmmAccess2OnSmmAccessThunk.c deleted file mode 100644 index 0275bd7550..0000000000 --- a/EdkCompatibilityPkg/Compatibility/SmmAccess2OnSmmAccessThunk/SmmAccess2OnSmmAccessThunk.c +++ /dev/null @@ -1,208 +0,0 @@ -/** @file
- SMM Access2 Protocol on SMM Access Protocol Thunk driver.
-
- Copyright (c) 2009 - 2010, 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 "SmmAccess2OnSmmAccessThunk.h"
-
-EFI_SMM_ACCESS2_PROTOCOL gSmmAccess2 = {
- SmmAccess2Open,
- SmmAccess2Close,
- SmmAccess2Lock,
- SmmAccess2GetCapabilities,
- FALSE,
- FALSE
-};
-
-EFI_SMM_ACCESS_PROTOCOL *mSmmAccess;
-UINTN mSmramRegionNumber;
-
-/**
- Opens the SMRAM area to be accessible by a boot-service driver.
-
- This function "opens" SMRAM so that it is visible while not inside of SMM. The function should
- return EFI_UNSUPPORTED if the hardware does not support hiding of SMRAM. The function
- should return EFI_DEVICE_ERROR if the SMRAM configuration is locked.
-
- @param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_UNSUPPORTED The system does not support opening and closing of SMRAM.
- @retval EFI_DEVICE_ERROR SMRAM cannot be opened, perhaps because it is locked.
-**/
-EFI_STATUS
-EFIAPI
-SmmAccess2Open (
- IN EFI_SMM_ACCESS2_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- UINTN DescriptorIndex;
-
- ///
- /// Open all SMRAM regions via SMM Access Protocol
- ///
-
- Status = EFI_SUCCESS;
- for (DescriptorIndex = 0; DescriptorIndex < mSmramRegionNumber && !EFI_ERROR (Status); DescriptorIndex++) {
- Status = mSmmAccess->Open (mSmmAccess, DescriptorIndex);
- }
- if (!EFI_ERROR (Status)) {
- gSmmAccess2.OpenState = TRUE;
- }
- return Status;
-}
-
-/**
- Inhibits access to the SMRAM.
-
- This function "closes" SMRAM so that it is not visible while outside of SMM. The function should
- return EFI_UNSUPPORTED if the hardware does not support hiding of SMRAM.
-
- @param [in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_UNSUPPORTED The system does not support opening and closing of SMRAM.
- @retval EFI_DEVICE_ERROR SMRAM cannot be closed.
-**/
-EFI_STATUS
-EFIAPI
-SmmAccess2Close (
- IN EFI_SMM_ACCESS2_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- UINTN DescriptorIndex;
-
- ///
- /// Close all SMRAM regions via SMM Access Protocol
- ///
-
- Status = EFI_SUCCESS;
- for (DescriptorIndex = 0; DescriptorIndex < mSmramRegionNumber && !EFI_ERROR (Status); DescriptorIndex++) {
- Status = mSmmAccess->Close (mSmmAccess, DescriptorIndex);
- }
- if (!EFI_ERROR (Status)) {
- gSmmAccess2.OpenState = FALSE;
- }
- return Status;
-}
-
-/**
- Inhibits access to the SMRAM.
-
- This function prohibits access to the SMRAM region. This function is usually implemented such
- that it is a write-once operation.
-
- @param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
-
- @retval EFI_SUCCESS The device was successfully locked.
- @retval EFI_UNSUPPORTED The system does not support locking of SMRAM.
-**/
-EFI_STATUS
-EFIAPI
-SmmAccess2Lock (
- IN EFI_SMM_ACCESS2_PROTOCOL *This
- )
-{
- EFI_STATUS Status;
- UINTN DescriptorIndex;
-
- ///
- /// Lock all SMRAM regions via SMM Access Protocol
- ///
-
- Status = EFI_SUCCESS;
- for (DescriptorIndex = 0; DescriptorIndex < mSmramRegionNumber && !EFI_ERROR (Status); DescriptorIndex++) {
- Status = mSmmAccess->Lock (mSmmAccess, DescriptorIndex);
- }
- if (!EFI_ERROR (Status)) {
- gSmmAccess2.LockState = TRUE;
- }
- return Status;
-}
-
-/**
- Queries the memory controller for the possible regions that will support SMRAM.
-
- @param[in] This The EFI_SMM_ACCESS2_PROTOCOL instance.
- @param[in, out] SmramMapSize A pointer to the size, in bytes, of the SmramMemoryMap buffer.
- @param[in, out] SmramMap A pointer to the buffer in which firmware places the current memory map.
-
- @retval EFI_SUCCESS The chipset supported the given resource.
- @retval EFI_BUFFER_TOO_SMALL The SmramMap parameter was too small. The current buffer size
- needed to hold the memory map is returned in SmramMapSize.
-**/
-EFI_STATUS
-EFIAPI
-SmmAccess2GetCapabilities (
- IN CONST EFI_SMM_ACCESS2_PROTOCOL *This,
- IN OUT UINTN *SmramMapSize,
- IN OUT EFI_SMRAM_DESCRIPTOR *SmramMap
- )
-{
- return mSmmAccess->GetCapabilities (mSmmAccess, SmramMapSize, SmramMap);
-}
-
-/**
- Entry Point for SMM Access2 On SMM Access Thunk driver.
-
- @param[in] ImageHandle Image handle of this driver.
- @param[in] SystemTable A Pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval other Some error occurred when executing this entry point.
-**/
-EFI_STATUS
-EFIAPI
-SmmAccess2ThunkMain (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- EFI_STATUS Status;
- UINTN SmramMapSize;
-
- ///
- /// Locate SMM Access Protocol
- ///
- Status = gBS->LocateProtocol (&gEfiSmmAccessProtocolGuid, NULL, (VOID **)&mSmmAccess);
- ASSERT_EFI_ERROR (Status);
-
- ///
- /// Calculate number of SMRAM regions
- ///
- SmramMapSize = 0;
- Status = mSmmAccess->GetCapabilities (mSmmAccess, &SmramMapSize, NULL);
- ASSERT (Status == EFI_BUFFER_TOO_SMALL);
-
- mSmramRegionNumber = SmramMapSize/sizeof (EFI_SMRAM_DESCRIPTOR);
- ASSERT (mSmramRegionNumber > 0);
-
- ///
- /// Assume all SMRAM regions have consistent OPEN and LOCK states
- ///
- gSmmAccess2.OpenState = mSmmAccess->OpenState;
- gSmmAccess2.LockState = mSmmAccess->LockState;
-
- ///
- /// Publish PI SMM Access2 Protocol
- ///
- Status = gBS->InstallProtocolInterface (
- &ImageHandle,
- &gEfiSmmAccess2ProtocolGuid,
- EFI_NATIVE_INTERFACE,
- &gSmmAccess2
- );
- return Status;
-}
-
|