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/** @file
The module entry point for Tcg configuration module.
Copyright (c) 2011, 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 "TcgConfigImpl.h"
/**
The entry point for Tcg 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
TcgConfigDriverEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
TCG_CONFIG_PRIVATE_DATA *PrivateData;
EFI_TCG_PROTOCOL *TcgProtocol;
Status = TisPcRequestUseTpm ((TIS_TPM_HANDLE) (UINTN) TPM_BASE_ADDRESS);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "TPM not detected!\n"));
return Status;
}
Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &TcgProtocol);
if (EFI_ERROR (Status)) {
TcgProtocol = NULL;
}
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 (TCG_CONFIG_PRIVATE_DATA), &mTcgConfigPrivateDateTemplate);
if (PrivateData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
PrivateData->TcgProtocol = TcgProtocol;
PrivateData->HideTpm = (BOOLEAN) (PcdGetBool (PcdHideTpmSupport) && PcdGetBool (PcdHideTpm));
//
// Install TCG configuration form
//
Status = InstallTcgConfigForm (PrivateData);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
//
// Install private GUID.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gEfiCallerIdGuid,
PrivateData,
NULL
);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
return EFI_SUCCESS;
ErrorExit:
if (PrivateData != NULL) {
UninstallTcgConfigForm (PrivateData);
}
return Status;
}
/**
Unload the Tcg configuration form.
@param[in] ImageHandle The driver's image handle.
@retval EFI_SUCCESS The Tcg configuration form is unloaded.
@retval Others Failed to unload the form.
**/
EFI_STATUS
EFIAPI
TcgConfigDriverUnload (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
TCG_CONFIG_PRIVATE_DATA *PrivateData;
Status = gBS->HandleProtocol (
ImageHandle,
&gEfiCallerIdGuid,
(VOID **) &PrivateData
);
if (EFI_ERROR (Status)) {
return Status;
}
ASSERT (PrivateData->Signature == TCG_CONFIG_PRIVATE_DATA_SIGNATURE);
gBS->UninstallMultipleProtocolInterfaces (
&ImageHandle,
&gEfiCallerIdGuid,
PrivateData,
NULL
);
UninstallTcgConfigForm (PrivateData);
return EFI_SUCCESS;
}
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