mirror of https://github.com/acidanthera/audk.git
791 lines
25 KiB
C
791 lines
25 KiB
C
/** @file
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PCI Rom supporting funtions implementation for PCI Bus module.
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Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
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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 "PciBus.h"
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/**
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Load the EFI Image from Option ROM
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@param PciIoDevice PCI IO device instance.
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@param FilePath The file path of the EFI Image
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@param BufferSize On input the size of Buffer in bytes. On output with a return
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code of EFI_SUCCESS, the amount of data transferred to Buffer.
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On output with a return code of EFI_BUFFER_TOO_SMALL,
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the size of Buffer required to retrieve the requested file.
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@param Buffer The memory buffer to transfer the file to. If Buffer is NULL,
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then no the size of the requested file is returned in BufferSize.
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@retval EFI_SUCCESS The file was loaded.
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@retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or
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BufferSize is NULL.
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@retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.
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@retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.
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@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.
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BufferSize has been updated with the size needed to complete the request.
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**/
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EFI_STATUS
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LocalLoadFile2 (
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IN PCI_IO_DEVICE *PciIoDevice,
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IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer OPTIONAL
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)
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{
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EFI_STATUS Status;
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MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *EfiOpRomImageNode;
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EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;
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PCI_DATA_STRUCTURE *Pcir;
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UINT32 ImageSize;
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UINT8 *ImageBuffer;
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UINT32 ImageLength;
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UINT32 DestinationSize;
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UINT32 ScratchSize;
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VOID *Scratch;
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EFI_DECOMPRESS_PROTOCOL *Decompress;
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UINT32 InitializationSize;
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EfiOpRomImageNode = (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *) FilePath;
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if ((EfiOpRomImageNode == NULL) ||
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(DevicePathType (FilePath) != MEDIA_DEVICE_PATH) ||
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(DevicePathSubType (FilePath) != MEDIA_RELATIVE_OFFSET_RANGE_DP) ||
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(DevicePathNodeLength (FilePath) != sizeof (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH)) ||
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(!IsDevicePathEnd (NextDevicePathNode (FilePath))) ||
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(EfiOpRomImageNode->StartingOffset > EfiOpRomImageNode->EndingOffset) ||
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(EfiOpRomImageNode->EndingOffset >= PciIoDevice->RomSize) ||
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(BufferSize == NULL)
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) {
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return EFI_INVALID_PARAMETER;
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}
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EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) (
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(UINT8 *) PciIoDevice->PciIo.RomImage + EfiOpRomImageNode->StartingOffset
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);
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if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
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return EFI_NOT_FOUND;
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}
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Pcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) EfiRomHeader + EfiRomHeader->PcirOffset);
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ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);
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if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&
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(EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&
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((EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER) ||
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(EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER)) &&
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(EfiRomHeader->CompressionType <= EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED)
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) {
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ImageSize = Pcir->ImageLength * 512;
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InitializationSize = (UINT32) EfiRomHeader->InitializationSize * 512;
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if (InitializationSize > ImageSize || EfiRomHeader->EfiImageHeaderOffset >= InitializationSize) {
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return EFI_NOT_FOUND;
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}
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ImageBuffer = (UINT8 *) EfiRomHeader + EfiRomHeader->EfiImageHeaderOffset;
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ImageLength = InitializationSize - EfiRomHeader->EfiImageHeaderOffset;
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if (EfiRomHeader->CompressionType != EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {
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//
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// Uncompressed: Copy the EFI Image directly to user's buffer
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//
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if (Buffer == NULL || *BufferSize < ImageLength) {
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*BufferSize = ImageLength;
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return EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = ImageLength;
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CopyMem (Buffer, ImageBuffer, ImageLength);
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return EFI_SUCCESS;
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} else {
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//
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// Compressed: Uncompress before copying
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//
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Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID **) &Decompress);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
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Status = Decompress->GetInfo (
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Decompress,
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ImageBuffer,
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ImageLength,
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&DestinationSize,
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&ScratchSize
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);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
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if (Buffer == NULL || *BufferSize < DestinationSize) {
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*BufferSize = DestinationSize;
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return EFI_BUFFER_TOO_SMALL;
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}
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*BufferSize = DestinationSize;
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Scratch = AllocatePool (ScratchSize);
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if (Scratch == NULL) {
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return EFI_DEVICE_ERROR;
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}
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Status = Decompress->Decompress (
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Decompress,
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ImageBuffer,
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ImageLength,
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Buffer,
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DestinationSize,
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Scratch,
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ScratchSize
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);
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FreePool (Scratch);
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if (EFI_ERROR (Status)) {
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return EFI_DEVICE_ERROR;
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}
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return EFI_SUCCESS;
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}
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}
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return EFI_NOT_FOUND;
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}
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/**
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Initialize a PCI LoadFile2 instance.
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@param PciIoDevice PCI IO Device.
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**/
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VOID
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InitializePciLoadFile2 (
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IN PCI_IO_DEVICE *PciIoDevice
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)
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{
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PciIoDevice->LoadFile2.LoadFile = LoadFile2;
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}
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/**
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Causes the driver to load a specified file.
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@param This Indicates a pointer to the calling context.
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@param FilePath The device specific path of the file to load.
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@param BootPolicy Should always be FALSE.
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@param BufferSize On input the size of Buffer in bytes. On output with a return
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code of EFI_SUCCESS, the amount of data transferred to Buffer.
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On output with a return code of EFI_BUFFER_TOO_SMALL,
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the size of Buffer required to retrieve the requested file.
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@param Buffer The memory buffer to transfer the file to. If Buffer is NULL,
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then no the size of the requested file is returned in BufferSize.
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@retval EFI_SUCCESS The file was loaded.
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@retval EFI_UNSUPPORTED BootPolicy is TRUE.
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@retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or
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BufferSize is NULL.
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@retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.
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@retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.
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@retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.
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BufferSize has been updated with the size needed to complete the request.
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**/
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EFI_STATUS
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EFIAPI
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LoadFile2 (
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IN EFI_LOAD_FILE2_PROTOCOL *This,
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IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
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IN BOOLEAN BootPolicy,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer OPTIONAL
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)
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{
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PCI_IO_DEVICE *PciIoDevice;
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if (BootPolicy) {
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return EFI_UNSUPPORTED;
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}
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PciIoDevice = PCI_IO_DEVICE_FROM_LOAD_FILE2_THIS (This);
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return LocalLoadFile2 (
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PciIoDevice,
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FilePath,
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BufferSize,
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Buffer
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);
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}
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/**
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Get Pci device's oprom information.
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@param PciIoDevice Input Pci device instance.
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Output Pci device instance with updated OptionRom size.
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@retval EFI_NOT_FOUND Pci device has not Option Rom.
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@retval EFI_SUCCESS Pci device has Option Rom.
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**/
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EFI_STATUS
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GetOpRomInfo (
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IN OUT PCI_IO_DEVICE *PciIoDevice
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)
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{
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UINT8 RomBarIndex;
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UINT32 AllOnes;
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UINT64 Address;
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EFI_STATUS Status;
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UINT8 Bus;
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UINT8 Device;
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UINT8 Function;
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
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Bus = PciIoDevice->BusNumber;
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Device = PciIoDevice->DeviceNumber;
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Function = PciIoDevice->FunctionNumber;
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PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;
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//
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// Offset is 0x30 if is not ppb
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//
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//
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// 0x30
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//
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RomBarIndex = PCI_EXPANSION_ROM_BASE;
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if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {
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//
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// If is ppb, 0x38
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//
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RomBarIndex = PCI_BRIDGE_ROMBAR;
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}
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//
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// The bit0 is 0 to prevent the enabling of the Rom address decoder
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//
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AllOnes = 0xfffffffe;
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Address = EFI_PCI_ADDRESS (Bus, Device, Function, RomBarIndex);
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Status = PciRootBridgeIo->Pci.Write (
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PciRootBridgeIo,
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EfiPciWidthUint32,
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Address,
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1,
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&AllOnes
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_FOUND;
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}
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//
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// Read back
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//
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Status = PciRootBridgeIo->Pci.Read(
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PciRootBridgeIo,
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EfiPciWidthUint32,
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Address,
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1,
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&AllOnes
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);
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if (EFI_ERROR (Status)) {
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return EFI_NOT_FOUND;
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}
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//
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// Bits [1, 10] are reserved
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//
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AllOnes &= 0xFFFFF800;
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if ((AllOnes == 0) || (AllOnes == 0xFFFFF800)) {
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return EFI_NOT_FOUND;
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}
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PciIoDevice->RomSize = (~AllOnes) + 1;
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return EFI_SUCCESS;
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}
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/**
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Check if the RomImage contains EFI Images.
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@param RomImage The ROM address of Image for check.
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@param RomSize Size of ROM for check.
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@retval TRUE ROM contain EFI Image.
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@retval FALSE ROM not contain EFI Image.
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**/
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BOOLEAN
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ContainEfiImage (
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IN VOID *RomImage,
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IN UINT64 RomSize
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)
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{
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PCI_EXPANSION_ROM_HEADER *RomHeader;
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PCI_DATA_STRUCTURE *RomPcir;
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UINT8 Indicator;
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Indicator = 0;
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RomHeader = RomImage;
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if (RomHeader == NULL) {
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return FALSE;
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}
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do {
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if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
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RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);
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continue;
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}
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//
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// The PCI Data Structure must be DWORD aligned.
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//
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if (RomHeader->PcirOffset == 0 ||
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(RomHeader->PcirOffset & 3) != 0 ||
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(UINT8 *) RomHeader + RomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > (UINT8 *) RomImage + RomSize) {
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break;
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}
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RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);
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if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
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break;
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}
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if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {
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return TRUE;
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}
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Indicator = RomPcir->Indicator;
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RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->ImageLength * 512);
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} while (((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) && ((Indicator & 0x80) == 0x00));
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return FALSE;
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}
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/**
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Load Option Rom image for specified PCI device.
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@param PciDevice Pci device instance.
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@param RomBase Base address of Option Rom.
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@retval EFI_OUT_OF_RESOURCES No enough memory to hold image.
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@retval EFI_SUCESS Successfully loaded Option Rom.
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**/
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EFI_STATUS
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LoadOpRomImage (
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IN PCI_IO_DEVICE *PciDevice,
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IN UINT64 RomBase
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)
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{
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UINT8 RomBarIndex;
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UINT8 Indicator;
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UINT16 OffsetPcir;
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UINT32 RomBarOffset;
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UINT32 RomBar;
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EFI_STATUS RetStatus;
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BOOLEAN FirstCheck;
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UINT8 *Image;
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PCI_EXPANSION_ROM_HEADER *RomHeader;
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PCI_DATA_STRUCTURE *RomPcir;
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UINT64 RomSize;
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UINT64 RomImageSize;
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UINT32 LegacyImageLength;
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UINT8 *RomInMemory;
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UINT8 CodeType;
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RomSize = PciDevice->RomSize;
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Indicator = 0;
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RomImageSize = 0;
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RomInMemory = NULL;
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CodeType = 0xFF;
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//
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// Get the RomBarIndex
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//
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//
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// 0x30
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//
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RomBarIndex = PCI_EXPANSION_ROM_BASE;
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if (IS_PCI_BRIDGE (&(PciDevice->Pci))) {
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//
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// if is ppb
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//
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//
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// 0x38
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//
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RomBarIndex = PCI_BRIDGE_ROMBAR;
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}
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//
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// Allocate memory for Rom header and PCIR
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//
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RomHeader = AllocatePool (sizeof (PCI_EXPANSION_ROM_HEADER));
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if (RomHeader == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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RomPcir = AllocatePool (sizeof (PCI_DATA_STRUCTURE));
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if (RomPcir == NULL) {
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FreePool (RomHeader);
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return EFI_OUT_OF_RESOURCES;
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}
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RomBar = (UINT32) RomBase;
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//
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// Enable RomBar
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//
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RomDecode (PciDevice, RomBarIndex, RomBar, TRUE);
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RomBarOffset = RomBar;
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RetStatus = EFI_NOT_FOUND;
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FirstCheck = TRUE;
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LegacyImageLength = 0;
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do {
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PciDevice->PciRootBridgeIo->Mem.Read (
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PciDevice->PciRootBridgeIo,
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EfiPciWidthUint8,
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RomBarOffset,
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sizeof (PCI_EXPANSION_ROM_HEADER),
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(UINT8 *) RomHeader
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);
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if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
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RomBarOffset = RomBarOffset + 512;
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if (FirstCheck) {
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break;
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} else {
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RomImageSize = RomImageSize + 512;
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continue;
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}
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}
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FirstCheck = FALSE;
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OffsetPcir = RomHeader->PcirOffset;
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//
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// If the pointer to the PCI Data Structure is invalid, no further images can be located.
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// The PCI Data Structure must be DWORD aligned.
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//
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if (OffsetPcir == 0 ||
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(OffsetPcir & 3) != 0 ||
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RomImageSize + OffsetPcir + sizeof (PCI_DATA_STRUCTURE) > RomSize) {
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break;
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}
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PciDevice->PciRootBridgeIo->Mem.Read (
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PciDevice->PciRootBridgeIo,
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EfiPciWidthUint8,
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RomBarOffset + OffsetPcir,
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sizeof (PCI_DATA_STRUCTURE),
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(UINT8 *) RomPcir
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);
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//
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// If a valid signature is not present in the PCI Data Structure, no further images can be located.
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//
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if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {
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break;
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}
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if (RomImageSize + RomPcir->ImageLength * 512 > RomSize) {
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break;
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}
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if (RomPcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {
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CodeType = PCI_CODE_TYPE_PCAT_IMAGE;
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LegacyImageLength = ((UINT32)((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512) * 512;
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}
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Indicator = RomPcir->Indicator;
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RomImageSize = RomImageSize + RomPcir->ImageLength * 512;
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RomBarOffset = RomBarOffset + RomPcir->ImageLength * 512;
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} while (((Indicator & 0x80) == 0x00) && ((RomBarOffset - RomBar) < RomSize));
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//
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// Some Legacy Cards do not report the correct ImageLength so used the maximum
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// of the legacy length and the PCIR Image Length
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//
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if (CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {
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RomImageSize = MAX (RomImageSize, LegacyImageLength);
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}
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if (RomImageSize > 0) {
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RetStatus = EFI_SUCCESS;
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Image = AllocatePool ((UINT32) RomImageSize);
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if (Image == NULL) {
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RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);
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FreePool (RomHeader);
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FreePool (RomPcir);
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Copy Rom image into memory
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//
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PciDevice->PciRootBridgeIo->Mem.Read (
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PciDevice->PciRootBridgeIo,
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EfiPciWidthUint8,
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RomBar,
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(UINT32) RomImageSize,
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Image
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);
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RomInMemory = Image;
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}
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RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);
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|
|
PciDevice->EmbeddedRom = TRUE;
|
|
PciDevice->PciIo.RomSize = RomImageSize;
|
|
PciDevice->PciIo.RomImage = RomInMemory;
|
|
|
|
//
|
|
// For OpROM read from PCI device:
|
|
// Add the Rom Image to internal database for later PCI light enumeration
|
|
//
|
|
PciRomAddImageMapping (
|
|
NULL,
|
|
PciDevice->PciRootBridgeIo->SegmentNumber,
|
|
PciDevice->BusNumber,
|
|
PciDevice->DeviceNumber,
|
|
PciDevice->FunctionNumber,
|
|
PciDevice->PciIo.RomImage,
|
|
PciDevice->PciIo.RomSize
|
|
);
|
|
|
|
//
|
|
// Free allocated memory
|
|
//
|
|
FreePool (RomHeader);
|
|
FreePool (RomPcir);
|
|
|
|
return RetStatus;
|
|
}
|
|
|
|
/**
|
|
Enable/Disable Option Rom decode.
|
|
|
|
@param PciDevice Pci device instance.
|
|
@param RomBarIndex The BAR index of the standard PCI Configuration header to use as the
|
|
base address for resource range. The legal range for this field is 0..5.
|
|
@param RomBar Base address of Option Rom.
|
|
@param Enable Flag for enable/disable decode.
|
|
|
|
**/
|
|
VOID
|
|
RomDecode (
|
|
IN PCI_IO_DEVICE *PciDevice,
|
|
IN UINT8 RomBarIndex,
|
|
IN UINT32 RomBar,
|
|
IN BOOLEAN Enable
|
|
)
|
|
{
|
|
UINT32 Value32;
|
|
UINT32 Offset;
|
|
UINT32 OffsetMax;
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
|
|
PciIo = &PciDevice->PciIo;
|
|
if (Enable) {
|
|
//
|
|
// Clear all bars
|
|
//
|
|
OffsetMax = 0x24;
|
|
if (IS_PCI_BRIDGE(&PciDevice->Pci)) {
|
|
OffsetMax = 0x14;
|
|
}
|
|
|
|
for (Offset = 0x10; Offset <= OffsetMax; Offset += sizeof (UINT32)) {
|
|
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, Offset, 1, &gAllZero);
|
|
}
|
|
|
|
//
|
|
// set the Rom base address: now is hardcode
|
|
// enable its decoder
|
|
//
|
|
Value32 = RomBar | 0x1;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
(EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,
|
|
RomBarIndex,
|
|
1,
|
|
&Value32
|
|
);
|
|
|
|
//
|
|
// Programe all upstream bridge
|
|
//
|
|
ProgrameUpstreamBridgeForRom(PciDevice, RomBar, TRUE);
|
|
|
|
//
|
|
// Setting the memory space bit in the function's command register
|
|
//
|
|
PCI_ENABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);
|
|
|
|
} else {
|
|
|
|
//
|
|
// disable command register decode to memory
|
|
//
|
|
PCI_DISABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);
|
|
|
|
//
|
|
// Destroy the programmed bar in all the upstream bridge.
|
|
//
|
|
ProgrameUpstreamBridgeForRom(PciDevice, RomBar, FALSE);
|
|
|
|
//
|
|
// disable rom decode
|
|
//
|
|
Value32 = 0xFFFFFFFE;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
(EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,
|
|
RomBarIndex,
|
|
1,
|
|
&Value32
|
|
);
|
|
|
|
}
|
|
}
|
|
|
|
/**
|
|
Load and start the Option Rom image.
|
|
|
|
@param PciDevice Pci device instance.
|
|
|
|
@retval EFI_SUCCESS Successfully loaded and started PCI Option Rom image.
|
|
@retval EFI_NOT_FOUND Failed to process PCI Option Rom image.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
ProcessOpRomImage (
|
|
IN PCI_IO_DEVICE *PciDevice
|
|
)
|
|
{
|
|
UINT8 Indicator;
|
|
UINT32 ImageSize;
|
|
VOID *RomBar;
|
|
UINT8 *RomBarOffset;
|
|
EFI_HANDLE ImageHandle;
|
|
EFI_STATUS Status;
|
|
EFI_STATUS RetStatus;
|
|
EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;
|
|
PCI_DATA_STRUCTURE *Pcir;
|
|
EFI_DEVICE_PATH_PROTOCOL *PciOptionRomImageDevicePath;
|
|
MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH EfiOpRomImageNode;
|
|
VOID *Buffer;
|
|
UINTN BufferSize;
|
|
|
|
Indicator = 0;
|
|
|
|
//
|
|
// Get the Address of the Option Rom image
|
|
//
|
|
RomBar = PciDevice->PciIo.RomImage;
|
|
RomBarOffset = (UINT8 *) RomBar;
|
|
RetStatus = EFI_NOT_FOUND;
|
|
|
|
if (RomBar == NULL) {
|
|
return RetStatus;
|
|
}
|
|
ASSERT (((EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset)->Signature == PCI_EXPANSION_ROM_HEADER_SIGNATURE);
|
|
|
|
do {
|
|
EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset;
|
|
if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {
|
|
RomBarOffset += 512;
|
|
continue;
|
|
}
|
|
|
|
Pcir = (PCI_DATA_STRUCTURE *) (RomBarOffset + EfiRomHeader->PcirOffset);
|
|
ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);
|
|
ImageSize = (UINT32) (Pcir->ImageLength * 512);
|
|
Indicator = Pcir->Indicator;
|
|
|
|
//
|
|
// Skip the image if it is not an EFI PCI Option ROM image
|
|
//
|
|
if (Pcir->CodeType != PCI_CODE_TYPE_EFI_IMAGE) {
|
|
goto NextImage;
|
|
}
|
|
|
|
//
|
|
// Skip the EFI PCI Option ROM image if its machine type is not supported
|
|
//
|
|
if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (EfiRomHeader->EfiMachineType)) {
|
|
goto NextImage;
|
|
}
|
|
|
|
//
|
|
// Ignore the EFI PCI Option ROM image if it is an EFI application
|
|
//
|
|
if (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {
|
|
goto NextImage;
|
|
}
|
|
|
|
//
|
|
// Create Pci Option Rom Image device path header
|
|
//
|
|
EfiOpRomImageNode.Header.Type = MEDIA_DEVICE_PATH;
|
|
EfiOpRomImageNode.Header.SubType = MEDIA_RELATIVE_OFFSET_RANGE_DP;
|
|
SetDevicePathNodeLength (&EfiOpRomImageNode.Header, sizeof (EfiOpRomImageNode));
|
|
EfiOpRomImageNode.StartingOffset = (UINTN) RomBarOffset - (UINTN) RomBar;
|
|
EfiOpRomImageNode.EndingOffset = (UINTN) RomBarOffset + ImageSize - 1 - (UINTN) RomBar;
|
|
|
|
PciOptionRomImageDevicePath = AppendDevicePathNode (PciDevice->DevicePath, &EfiOpRomImageNode.Header);
|
|
ASSERT (PciOptionRomImageDevicePath != NULL);
|
|
|
|
//
|
|
// load image and start image
|
|
//
|
|
BufferSize = 0;
|
|
Buffer = NULL;
|
|
ImageHandle = NULL;
|
|
|
|
Status = gBS->LoadImage (
|
|
FALSE,
|
|
gPciBusDriverBinding.DriverBindingHandle,
|
|
PciOptionRomImageDevicePath,
|
|
Buffer,
|
|
BufferSize,
|
|
&ImageHandle
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Record the Option ROM Image device path when LoadImage fails.
|
|
// PciOverride.GetDriver() will try to look for the Image Handle using the device path later.
|
|
//
|
|
AddDriver (PciDevice, NULL, PciOptionRomImageDevicePath);
|
|
} else {
|
|
Status = gBS->StartImage (ImageHandle, NULL, NULL);
|
|
if (!EFI_ERROR (Status)) {
|
|
//
|
|
// Record the Option ROM Image Handle
|
|
//
|
|
AddDriver (PciDevice, ImageHandle, NULL);
|
|
PciRomAddImageMapping (
|
|
ImageHandle,
|
|
PciDevice->PciRootBridgeIo->SegmentNumber,
|
|
PciDevice->BusNumber,
|
|
PciDevice->DeviceNumber,
|
|
PciDevice->FunctionNumber,
|
|
PciDevice->PciIo.RomImage,
|
|
PciDevice->PciIo.RomSize
|
|
);
|
|
RetStatus = EFI_SUCCESS;
|
|
}
|
|
}
|
|
FreePool (PciOptionRomImageDevicePath);
|
|
|
|
NextImage:
|
|
RomBarOffset += ImageSize;
|
|
|
|
} while (((Indicator & 0x80) == 0x00) && (((UINTN) RomBarOffset - (UINTN) RomBar) < PciDevice->RomSize));
|
|
|
|
return RetStatus;
|
|
}
|
|
|