diff options
Diffstat (limited to 'SecurityPkg/Tcg/TrEEConfig/TrEEConfigDriver.c')
| -rw-r--r-- | SecurityPkg/Tcg/TrEEConfig/TrEEConfigDriver.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/SecurityPkg/Tcg/TrEEConfig/TrEEConfigDriver.c b/SecurityPkg/Tcg/TrEEConfig/TrEEConfigDriver.c new file mode 100644 index 000000000..f3c8e5f65 --- /dev/null +++ b/SecurityPkg/Tcg/TrEEConfig/TrEEConfigDriver.c @@ -0,0 +1,171 @@ +/** @file
+ The module entry point for TrEE configuration module.
+
+Copyright (c) 2013, 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 "TrEEConfigImpl.h"
+
+extern TPM_INSTANCE_ID mTpmInstanceId[TPM_DEVICE_MAX + 1];
+
+/**
+ The entry point for TrEE configuration driver.
+
+ @param[in] ImageHandle The image handle of the driver.
+ @param[in] SystemTable The system table.
+
+ @retval EFI_ALREADY_STARTED The driver already exists in system.
+ @retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.
+ @retval EFI_SUCCES All the related protocols are installed on the driver.
+ @retval Others Fail to install protocols as indicated.
+
+**/
+EFI_STATUS
+EFIAPI
+TrEEConfigDriverEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ TREE_CONFIG_PRIVATE_DATA *PrivateData;
+ TREE_CONFIGURATION TrEEConfiguration;
+ UINTN Index;
+ UINTN DataSize;
+
+ Status = gBS->OpenProtocol (
+ ImageHandle,
+ &gEfiCallerIdGuid,
+ NULL,
+ ImageHandle,
+ ImageHandle,
+ EFI_OPEN_PROTOCOL_TEST_PROTOCOL
+ );
+ if (!EFI_ERROR (Status)) {
+ return EFI_ALREADY_STARTED;
+ }
+
+ //
+ // Create a private data structure.
+ //
+ PrivateData = AllocateCopyPool (sizeof (TREE_CONFIG_PRIVATE_DATA), &mTrEEConfigPrivateDateTemplate);
+ ASSERT (PrivateData != NULL);
+
+ //
+ // Install private GUID.
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &ImageHandle,
+ &gEfiCallerIdGuid,
+ PrivateData,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ DataSize = sizeof(TrEEConfiguration);
+ Status = gRT->GetVariable (
+ TREE_STORAGE_NAME,
+ &gTrEEConfigFormSetGuid,
+ NULL,
+ &DataSize,
+ &TrEEConfiguration
+ );
+ if (EFI_ERROR (Status)) {
+ }
+ //
+ // We should always reinit PP request.
+ //
+ TrEEConfiguration.Tpm2Operation = TREE_PHYSICAL_PRESENCE_NO_ACTION;
+
+ //
+ // Sync data from PCD to variable, so that we do not need detect again in S3 phase.
+ //
+
+ //
+ // Get data from PCD to make sure data consistant - platform driver is suppose to construct this PCD accroding to Variable
+ //
+ for (Index = 0; Index < sizeof(mTpmInstanceId)/sizeof(mTpmInstanceId[0]); Index++) {
+ if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &mTpmInstanceId[Index].TpmInstanceGuid)) {
+ TrEEConfiguration.TpmDevice = mTpmInstanceId[Index].TpmDevice;
+ break;
+ }
+ }
+
+ //
+ // Save to variable so platform driver can get it.
+ //
+ Status = gRT->SetVariable (
+ TREE_STORAGE_NAME,
+ &gTrEEConfigFormSetGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
+ sizeof(TrEEConfiguration),
+ &TrEEConfiguration
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Install TrEE configuration form
+ //
+ Status = InstallTrEEConfigForm (PrivateData);
+ if (EFI_ERROR (Status)) {
+ goto ErrorExit;
+ }
+
+ return EFI_SUCCESS;
+
+ErrorExit:
+ if (PrivateData != NULL) {
+ UninstallTrEEConfigForm (PrivateData);
+ }
+
+ return Status;
+}
+
+/**
+ Unload the TrEE configuration form.
+
+ @param[in] ImageHandle The driver's image handle.
+
+ @retval EFI_SUCCESS The TrEE configuration form is unloaded.
+ @retval Others Failed to unload the form.
+
+**/
+EFI_STATUS
+EFIAPI
+TrEEConfigDriverUnload (
+ IN EFI_HANDLE ImageHandle
+ )
+{
+ EFI_STATUS Status;
+ TREE_CONFIG_PRIVATE_DATA *PrivateData;
+
+ Status = gBS->HandleProtocol (
+ ImageHandle,
+ &gEfiCallerIdGuid,
+ (VOID **) &PrivateData
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ASSERT (PrivateData->Signature == TREE_CONFIG_PRIVATE_DATA_SIGNATURE);
+
+ gBS->UninstallMultipleProtocolInterfaces (
+ &ImageHandle,
+ &gEfiCallerIdGuid,
+ PrivateData,
+ NULL
+ );
+
+ UninstallTrEEConfigForm (PrivateData);
+
+ return EFI_SUCCESS;
+}
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