mirror of https://github.com/acidanthera/audk.git
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/** @file
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PCI Rom supporting functions declaration for PCI Bus module.
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Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _EFI_PCI_OPTION_ROM_SUPPORT_H_
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#define _EFI_PCI_OPTION_ROM_SUPPORT_H_
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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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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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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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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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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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Enable/Disable Option Rom decode.
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@param PciDevice Pci device instance.
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@param RomBarIndex The BAR index of the standard PCI Configuration header to use as the
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base address for resource range. The legal range for this field is 0..5.
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@param RomBar Base address of Option Rom.
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@param Enable Flag for enable/disable decode.
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**/
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VOID
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RomDecode (
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IN PCI_IO_DEVICE *PciDevice,
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IN UINT8 RomBarIndex,
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IN UINT32 RomBar,
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IN BOOLEAN Enable
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);
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/**
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Load and start the Option Rom image.
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@param PciDevice Pci device instance.
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@retval EFI_SUCCESS Successfully loaded and started PCI Option Rom image.
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@retval EFI_NOT_FOUND Failed to process PCI Option Rom image.
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**/
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EFI_STATUS
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ProcessOpRomImage (
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IN PCI_IO_DEVICE *PciDevice
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);
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#endif
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