91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/** @file
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2004 - 2017 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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#include <Base.h>
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#include <Uefi.h>
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#include <IndustryStandard/Pci22.h>
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#include <Protocol/PciIo.h>
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#include <Library/DebugLib.h>
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VOID
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EFIAPI
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OpromPatchPciIo (
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IN EFI_PCI_IO_PROTOCOL *PciIo
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)
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{
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PCI_DEVICE_INDEPENDENT_REGION PciHeader;
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EFI_PCI_ROM_HEADER RomHeader;
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PCI_DATA_STRUCTURE *Pcir;
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UINTN Segment;
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UINTN Bus;
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UINTN Device;
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UINTN Function;
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if ((PciIo->RomSize == 0) || (PciIo->RomImage == NULL)) {
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return ;
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}
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PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
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PciIo->Pci.Read (
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PciIo,
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EfiPciIoWidthUint32,
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0,
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(sizeof (PciHeader.VendorId) + sizeof (PciHeader.DeviceId)) / sizeof (UINT32),
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&PciHeader
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);
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DEBUG ((DEBUG_INFO, "OpromPatchEntrypoint - %02x, %02x, %02x\n", Bus, Device, Function));
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DEBUG ((DEBUG_INFO, "OpromPatchEntrypoint - %04x:%04x\n", (UINTN)PciHeader.VendorId, (UINTN)PciHeader.DeviceId));
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DEBUG ((DEBUG_INFO, "OpromPatchEntrypoint - Rom: %08x:%08x\n", (UINTN)PciIo->RomImage, (UINTN)PciIo->RomSize));
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RomHeader.Raw = PciIo->RomImage;
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Pcir = (PCI_DATA_STRUCTURE *) (RomHeader.Raw + RomHeader.Generic->PcirOffset);
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DEBUG ((DEBUG_INFO, "OpromPatchEntrypoint - Pcir: %04x:%04x\n", (UINTN)Pcir->VendorId, (UINTN)Pcir->DeviceId));
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//
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// Fix MS-HD5770 video adapter can not work:
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// This device is not a OPROM 3.0 and does not have device id list as well.
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// It only have 1 device id in OPROM.
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// Device Id in OpROM is not same with the value in PCI configuration space
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// it will cause VBIOS fails to start
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//
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if ((PciHeader.VendorId == 0x1002) && (PciHeader.DeviceId == 0x68BE)) {
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DEBUG ((DEBUG_INFO, "MS-HD5770 video adapter\n"));
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if ((Pcir->VendorId == 0x1002) &&(Pcir->DeviceId ==0x68B8)) {
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//
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// Assign same device id in PCI configuration space
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//
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Pcir->DeviceId = PciHeader.DeviceId;
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}
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}
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return ;
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}
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