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- /*++
- Copyright (c) 1999 - 2014, Intel Corporation. All rights reserved
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
- --*/
- /** @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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