diff options
Diffstat (limited to 'MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c')
| -rw-r--r-- | MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c | 260 |
1 files changed, 130 insertions, 130 deletions
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c index 0369c3cd01..449acaad1e 100644 --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableTraditionalMm.c @@ -1,130 +1,130 @@ -/** @file
-
- Parts of the SMM/MM implementation that are specific to traditional MM
-
-Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved. <BR>
-Copyright (c) 2018, Linaro, Ltd. All rights reserved. <BR>
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/SmmMemLib.h>
-#include "Variable.h"
-
-/**
- This function checks if the buffer is valid per processor architecture and
- does not overlap with SMRAM.
-
- @param Buffer The buffer start address to be checked.
- @param Length The buffer length to be checked.
-
- @retval TRUE This buffer is valid per processor architecture and does not
- overlap with SMRAM.
- @retval FALSE This buffer is not valid per processor architecture or overlaps
- with SMRAM.
-**/
-BOOLEAN
-VariableSmmIsBufferOutsideSmmValid (
- IN EFI_PHYSICAL_ADDRESS Buffer,
- IN UINT64 Length
- )
-{
- return SmmIsBufferOutsideSmmValid (Buffer, Length);
-}
-
-/**
- Notify the system that the SMM variable driver is ready.
-**/
-VOID
-VariableNotifySmmReady (
- VOID
- )
-{
- EFI_STATUS Status;
- EFI_HANDLE Handle;
-
- Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Handle,
- &gEfiSmmVariableProtocolGuid,
- EFI_NATIVE_INTERFACE,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-}
-
-/**
- Notify the system that the SMM variable write driver is ready.
-**/
-VOID
-VariableNotifySmmWriteReady (
- VOID
- )
-{
- EFI_STATUS Status;
- EFI_HANDLE Handle;
-
- Handle = NULL;
- Status = gBS->InstallProtocolInterface (
- &Handle,
- &gSmmVariableWriteGuid,
- EFI_NATIVE_INTERFACE,
- NULL
- );
- ASSERT_EFI_ERROR (Status);
-}
-
-/**
- Variable service MM driver entry point
-
- @param[in] ImageHandle A handle for the image that is initializing this
- driver
- @param[in] SystemTable A pointer to the EFI system table
-
- @retval EFI_SUCCESS Variable service successfully initialized.
-**/
-EFI_STATUS
-EFIAPI
-VariableServiceInitialize (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- )
-{
- return MmVariableServiceInitialize ();
-}
-
-/**
- Whether the TCG or TCG2 protocols are installed in the UEFI protocol database.
- This information is used by the MorLock code to infer whether an existing
- MOR variable is legitimate or not.
-
- @retval TRUE Either the TCG or TCG2 protocol is installed in the UEFI
- protocol database
- @retval FALSE Neither the TCG nor the TCG2 protocol is installed in the UEFI
- protocol database
-**/
-BOOLEAN
-VariableHaveTcgProtocols (
- VOID
- )
-{
- EFI_STATUS Status;
- VOID *Interface;
-
- Status = gBS->LocateProtocol (
- &gEfiTcg2ProtocolGuid,
- NULL, // Registration
- &Interface
- );
- if (!EFI_ERROR (Status)) {
- return TRUE;
- }
-
- Status = gBS->LocateProtocol (
- &gEfiTcgProtocolGuid,
- NULL, // Registration
- &Interface
- );
- return !EFI_ERROR (Status);
-}
+/** @file + + Parts of the SMM/MM implementation that are specific to traditional MM + +Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved. <BR> +Copyright (c) 2018, Linaro, Ltd. All rights reserved. <BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <Library/UefiBootServicesTableLib.h> +#include <Library/SmmMemLib.h> +#include "Variable.h" + +/** + This function checks if the buffer is valid per processor architecture and + does not overlap with SMRAM. + + @param Buffer The buffer start address to be checked. + @param Length The buffer length to be checked. + + @retval TRUE This buffer is valid per processor architecture and does not + overlap with SMRAM. + @retval FALSE This buffer is not valid per processor architecture or overlaps + with SMRAM. +**/ +BOOLEAN +VariableSmmIsBufferOutsideSmmValid ( + IN EFI_PHYSICAL_ADDRESS Buffer, + IN UINT64 Length + ) +{ + return SmmIsBufferOutsideSmmValid (Buffer, Length); +} + +/** + Notify the system that the SMM variable driver is ready. +**/ +VOID +VariableNotifySmmReady ( + VOID + ) +{ + EFI_STATUS Status; + EFI_HANDLE Handle; + + Handle = NULL; + Status = gBS->InstallProtocolInterface ( + &Handle, + &gEfiSmmVariableProtocolGuid, + EFI_NATIVE_INTERFACE, + NULL + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Notify the system that the SMM variable write driver is ready. +**/ +VOID +VariableNotifySmmWriteReady ( + VOID + ) +{ + EFI_STATUS Status; + EFI_HANDLE Handle; + + Handle = NULL; + Status = gBS->InstallProtocolInterface ( + &Handle, + &gSmmVariableWriteGuid, + EFI_NATIVE_INTERFACE, + NULL + ); + ASSERT_EFI_ERROR (Status); +} + +/** + Variable service MM driver entry point + + @param[in] ImageHandle A handle for the image that is initializing this + driver + @param[in] SystemTable A pointer to the EFI system table + + @retval EFI_SUCCESS Variable service successfully initialized. +**/ +EFI_STATUS +EFIAPI +VariableServiceInitialize ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ) +{ + return MmVariableServiceInitialize (); +} + +/** + Whether the TCG or TCG2 protocols are installed in the UEFI protocol database. + This information is used by the MorLock code to infer whether an existing + MOR variable is legitimate or not. + + @retval TRUE Either the TCG or TCG2 protocol is installed in the UEFI + protocol database + @retval FALSE Neither the TCG nor the TCG2 protocol is installed in the UEFI + protocol database +**/ +BOOLEAN +VariableHaveTcgProtocols ( + VOID + ) +{ + EFI_STATUS Status; + VOID *Interface; + + Status = gBS->LocateProtocol ( + &gEfiTcg2ProtocolGuid, + NULL, // Registration + &Interface + ); + if (!EFI_ERROR (Status)) { + return TRUE; + } + + Status = gBS->LocateProtocol ( + &gEfiTcgProtocolGuid, + NULL, // Registration + &Interface + ); + return !EFI_ERROR (Status); +} |