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/*++
Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved
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.
--*/
/** @file
**/
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Protocol/FirmwareVolume2.h>
#include <Protocol/PlatformGopPolicy.h>
#include <Guid/SetupVariable.h>
#include <SetupMode.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
PLATFORM_GOP_POLICY_PROTOCOL mPlatformGOPPolicy;
//
// Function implementations
//
/**
The function will execute with as the platform policy, and gives
the Platform Lid Status. IBV/OEM can customize this code for their specific
policy action.
@param CurrentLidStatus Gives the current LID Status
@retval EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
GetPlatformLidStatus (
OUT LID_STATUS *CurrentLidStatus
)
{
*CurrentLidStatus = LidOpen;
return EFI_SUCCESS;
}
/**
The function will execute and gives the Video Bios Table Size and Address.
@param VbtAddress Gives the Physical Address of Video BIOS Table
@param VbtSize Gives the Size of Video BIOS Table
@retval EFI_STATUS.
**/
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;
Buffer = 0;
FvHandles = NULL;
if (VbtAddress == NULL || VbtSize == NULL){
return EFI_INVALID_PARAMETER;
}
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,
&gBmpImageGuid,
EFI_SECTION_RAW,
0,
(void **)&Buffer,
&VbtBufferSize,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
*VbtAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Buffer;
*VbtSize = (UINT32)VbtBufferSize;
Status = EFI_SUCCESS;
break;
}
}
} else {
Status = EFI_NOT_FOUND;
}
if (FvHandles != NULL) {
gBS->FreePool (FvHandles);
FvHandles = NULL;
}
return Status;
}
/**
Entry point for the Platform GOP Policy Driver.
@param ImageHandle Image handle of this driver.
@param SystemTable Global system service table.
@retval EFI_SUCCESS Initialization complete.
@retval EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.
**/
EFI_STATUS
EFIAPI
PlatformGOPPolicyEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status = EFI_SUCCESS;
SYSTEM_CONFIGURATION SystemConfiguration;
UINTN VarSize;
gBS = SystemTable->BootServices;
gBS->SetMem (
&mPlatformGOPPolicy,
sizeof (PLATFORM_GOP_POLICY_PROTOCOL),
0
);
mPlatformGOPPolicy.Revision = PLATFORM_GOP_POLICY_PROTOCOL_REVISION_01;
mPlatformGOPPolicy.GetPlatformLidStatus = GetPlatformLidStatus;
mPlatformGOPPolicy.GetVbtData = GetVbtData;
//
// Install protocol to allow access to this Policy.
//
VarSize = sizeof(SYSTEM_CONFIGURATION);
Status = gRT->GetVariable(
L"Setup",
&gEfiNormalSetupGuid,
NULL,
&VarSize,
&SystemConfiguration
);
if (EFI_ERROR (Status) || VarSize != sizeof(SYSTEM_CONFIGURATION)) {
//The setup variable is corrupted
VarSize = sizeof(SYSTEM_CONFIGURATION);
Status = gRT->GetVariable(
L"SetupRecovery",
&gEfiNormalSetupGuid,
NULL,
&VarSize,
&SystemConfiguration
);
ASSERT_EFI_ERROR (Status);
}
if (SystemConfiguration.GOPEnable == 1)
{
Status = gBS->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gPlatformGOPPolicyGuid,
&mPlatformGOPPolicy,
NULL
);
}
return Status;
}
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