mirror of https://github.com/acidanthera/audk.git
124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/** @file
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Option Rom Support for PCI Bus Driver
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Copyright (c) 2006, Intel Corporation
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All rights reserved. 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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#include "PciRomTable.h"
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typedef struct {
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EFI_HANDLE ImageHandle;
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UINTN Seg;
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UINT8 Bus;
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UINT8 Dev;
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UINT8 Func;
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UINT64 RomAddress;
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UINT64 RomLength;
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} EFI_PCI_ROM_IMAGE_MAPPING;
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UINTN mNumberOfPciRomImages = 0;
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UINTN mMaxNumberOfPciRomImages = 0;
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EFI_PCI_ROM_IMAGE_MAPPING *mRomImageTable = NULL;
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/**
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Add the Rom Image to internal database for later PCI light enumeration.
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@param ImageHandle Option Rom image handle.
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@param Seg Segment of PCI space.
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@param Bus Bus NO of PCI space.
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@param Dev Dev NO of PCI space.
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@param Func Func NO of PCI space.
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@param RomAddress Base address of OptionRom.
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@param RomLength Length of rom image.
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**/
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VOID
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PciRomAddImageMapping (
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IN EFI_HANDLE ImageHandle,
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IN UINTN Seg,
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IN UINT8 Bus,
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IN UINT8 Dev,
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IN UINT8 Func,
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IN UINT64 RomAddress,
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IN UINT64 RomLength
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)
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{
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EFI_PCI_ROM_IMAGE_MAPPING *TempMapping;
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if (mNumberOfPciRomImages >= mMaxNumberOfPciRomImages) {
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mMaxNumberOfPciRomImages += 0x20;
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TempMapping = NULL;
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TempMapping = AllocatePool (mMaxNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
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if (TempMapping == NULL) {
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return ;
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}
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CopyMem (TempMapping, mRomImageTable, mNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
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if (mRomImageTable != NULL) {
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gBS->FreePool (mRomImageTable);
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}
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mRomImageTable = TempMapping;
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}
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mRomImageTable[mNumberOfPciRomImages].ImageHandle = ImageHandle;
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mRomImageTable[mNumberOfPciRomImages].Seg = Seg;
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mRomImageTable[mNumberOfPciRomImages].Bus = Bus;
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mRomImageTable[mNumberOfPciRomImages].Dev = Dev;
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mRomImageTable[mNumberOfPciRomImages].Func = Func;
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mRomImageTable[mNumberOfPciRomImages].RomAddress = RomAddress;
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mRomImageTable[mNumberOfPciRomImages].RomLength = RomLength;
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mNumberOfPciRomImages++;
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}
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/**
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Get Option rom driver's mapping for PCI device.
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@param PciIoDevice Device instance.
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@retval TRUE Found Image mapping.
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@retval FALSE
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**/
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BOOLEAN
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PciRomGetImageMapping (
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PCI_IO_DEVICE *PciIoDevice
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)
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{
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
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UINTN Index;
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BOOLEAN Found;
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PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;
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Found = FALSE;
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for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
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if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
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mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
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mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
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mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
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Found = TRUE;
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if (mRomImageTable[Index].ImageHandle != NULL) {
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AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle);
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} else {
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PciIoDevice->PciIo.RomImage = (VOID *) (UINTN) mRomImageTable[Index].RomAddress;
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PciIoDevice->PciIo.RomSize = (UINTN) mRomImageTable[Index].RomLength;
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}
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}
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}
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return Found;
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}
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