mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/** @file
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Copyright (C) 2020, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <PiDxe.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiLib.h>
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#include <Protocol/DevicePath.h>
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#include <Protocol/GraphicsOutput.h>
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#include <Protocol/FirmwareVolume.h>
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#include <Protocol/DevicePath.h>
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STATIC
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EFI_HANDLE
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GetFvFileVolume (
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IN EFI_GUID *FvNameGuid
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)
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{
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UINTN Index;
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EFI_STATUS Status;
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UINT32 AuthenticationStatus;
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EFI_FIRMWARE_VOLUME_PROTOCOL *FirmwareVolumeInterface;
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UINTN NumOfHandles;
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EFI_HANDLE *HandleBuffer;
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EFI_FV_FILETYPE Type;
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UINTN Size;
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EFI_FV_FILE_ATTRIBUTES Attributes;
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EFI_HANDLE CurrentVolume;
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Status = gBS->LocateHandleBuffer (
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ByProtocol,
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&gEfiFirmwareVolumeProtocolGuid,
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NULL,
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&NumOfHandles,
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&HandleBuffer
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);
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//
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// TODO: Support FirmwareVolume2?
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//
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if (EFI_ERROR (Status)) {
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return NULL;
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}
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for (Index = 0; Index < NumOfHandles; ++Index) {
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CurrentVolume = HandleBuffer[Index];
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Status = gBS->HandleProtocol (
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CurrentVolume,
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&gEfiFirmwareVolumeProtocolGuid,
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(VOID **) &FirmwareVolumeInterface
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);
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if (EFI_ERROR (Status)) {
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continue;
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}
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Status = FirmwareVolumeInterface->ReadFile (
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FirmwareVolumeInterface,
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FvNameGuid,
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NULL,
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&Size,
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&Type,
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&Attributes,
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&AuthenticationStatus
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);
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if (!EFI_ERROR (Status)) {
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gBS->FreePool (HandleBuffer);
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return CurrentVolume;
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}
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}
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gBS->FreePool (HandleBuffer);
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return NULL;
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}
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EFI_DEVICE_PATH_PROTOCOL *
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CreateFvFileDevicePath (
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IN EFI_GUID *FileGuid
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)
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{
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EFI_HANDLE VolumeHandle;
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EFI_DEVICE_PATH_PROTOCOL *VolumeDevicePath;
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MEDIA_FW_VOL_FILEPATH_DEVICE_PATH FvFileNode;
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VolumeHandle = GetFvFileVolume (FileGuid);
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if (VolumeHandle == NULL) {
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return NULL;
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}
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VolumeDevicePath = DevicePathFromHandle (VolumeHandle);
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if (VolumeDevicePath == NULL) {
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return NULL;
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}
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EfiInitializeFwVolDevicepathNode (&FvFileNode, FileGuid);
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return AppendDevicePathNode (VolumeDevicePath, (EFI_DEVICE_PATH_PROTOCOL *) &FvFileNode);
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}
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