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/** @file
This file initialises and Installs GopPolicy Protocol.
Copyright (c) 2017, 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 that 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 "GopPolicyInitDxe.h"
#include <Protocol/GopPolicy.h>
GLOBAL_REMOVE_IF_UNREFERENCED GOP_POLICY_PROTOCOL mGOPPolicy;
GLOBAL_REMOVE_IF_UNREFERENCED UINT32 mVbtSize = 0;
GLOBAL_REMOVE_IF_UNREFERENCED EFI_PHYSICAL_ADDRESS mVbtAddress = 0;
//
// Function implementations
//
/**
@param[out] CurrentLidStatus
@retval EFI_SUCCESS
@retval EFI_UNSUPPORTED
**/
EFI_STATUS
EFIAPI
GetPlatformLidStatus (
OUT LID_STATUS *CurrentLidStatus
)
{
return EFI_UNSUPPORTED;
}
/**
@param[out] CurrentDockStatus
@retval EFI_SUCCESS
@retval EFI_UNSUPPORTED
**/
EFI_STATUS
EFIAPI
GetPlatformDockStatus (
OUT DOCK_STATUS CurrentDockStatus
)
{
return EFI_UNSUPPORTED;
}
/**
@param[out] VbtAddress
@param[out] VbtSize
@retval EFI_SUCCESS
@retval EFI_NOT_FOUND
**/
EFI_STATUS
EFIAPI
GetVbtData (
OUT EFI_PHYSICAL_ADDRESS *VbtAddress,
OUT UINT32 *VbtSize
)
{
EFI_STATUS Status;
UINTN FvProtocolCount;
EFI_HANDLE *FvHandles;
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;
UINTN Index;
UINT32 AuthenticationStatus;
UINT8 *Buffer;
UINTN VbtBufferSize;
Status = EFI_NOT_FOUND;
if ( mVbtAddress == 0) {
Fv = NULL;
Buffer = 0;
FvHandles = NULL;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiFirmwareVolume2ProtocolGuid,
NULL,
&FvProtocolCount,
&FvHandles
);
if (!EFI_ERROR (Status)) {
for (Index = 0; Index < FvProtocolCount; Index++) {
Status = gBS->HandleProtocol (
FvHandles[Index],
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &Fv
);
VbtBufferSize = 0;
Status = Fv->ReadSection (
Fv,
&gIntelPeiGraphicsVbtGuid,
EFI_SECTION_RAW,
0,
(VOID **) &Buffer,
&VbtBufferSize,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
*VbtAddress = (EFI_PHYSICAL_ADDRESS)Buffer;
*VbtSize = (UINT32)VbtBufferSize;
mVbtAddress = *VbtAddress;
mVbtSize = *VbtSize;
Status = EFI_SUCCESS;
break;
}
}
} else {
Status = EFI_NOT_FOUND;
}
if (FvHandles != NULL) {
FreePool (FvHandles);
FvHandles = NULL;
}
} else {
*VbtAddress = mVbtAddress;
*VbtSize = mVbtSize;
Status = EFI_SUCCESS;
}
return Status;
}
/**
Initialize GOP DXE Policy
@param[in] ImageHandle Image handle of this driver.
@retval EFI_SUCCESS Initialization complete.
@retval EFI_UNSUPPORTED The chipset is unsupported by this driver.
@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
@retval EFI_DEVICE_ERROR Device error, driver exits abnormally.
**/
EFI_STATUS
EFIAPI
GopPolicyInitDxe (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
//
// Initialize the EFI Driver Library
//
SetMem (&mGOPPolicy, sizeof (GOP_POLICY_PROTOCOL), 0);
mGOPPolicy.Revision = GOP_POLICY_PROTOCOL_REVISION_03;
mGOPPolicy.GetPlatformLidStatus = GetPlatformLidStatus;
mGOPPolicy.GetVbtData = GetVbtData;
mGOPPolicy.GetPlatformDockStatus = GetPlatformDockStatus;
//
// Install protocol to allow access to this Policy.
//
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gGopPolicyProtocolGuid,
&mGOPPolicy,
NULL
);
return Status;
}
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