Intel Extensible Firmware Interface - Manual (Page 476)

Extensible Firmware Interface Specification
12-58 12/01/02 Version 1.10
RomImage A pointer to the in memory copy of the ROM image. The PCI Bus
Driver is responsible for allocating memory for the ROM image,
and copying the contents of the ROM to memory. The contents of
this buffer are either from the PCI option ROM that can be
accessed through the ROM BAR of the PCI controller, or it is from
a platform-specific location. The
Attributes() function can
be used to determine from which of these two sources the
RomImage buffer was initialized.
Related Definitions
//*******************************************************
// EFI_PCI_IO_PROTOCOL_WIDTH
//*******************************************************
typedef enum {
EfiPciIoWidthUint8,
EfiPciIoWidthUint16,
EfiPciIoWidthUint32,
EfiPciIoWidthUint64,
EfiPciIoWidthFifoUint8,
EfiPciIoWidthFifoUint16,
EfiPciIoWidthFifoUint32,
EfiPciIoWidthFifoUint64,
EfiPciIoWidthFillUint8,
EfiPciIoWidthFillUint16,
EfiPciIoWidthFillUint32,
EfiPciIoWidthFillUint64,
EfiPciIoWidthMaximum
} EFI_PCI_IO_PROTOCOL_WIDTH;
#define EFI_PCI_IO_PASS_THROUGH_BAR 0xff
//*******************************************************
// EFI_PCI_IO_PROTOCOL_POLL_IO_MEM
//*******************************************************
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_IO_PROTOCOL_POLL_IO_MEM) (
IN struct EFI_PCI_IO_PROTOCOL
*This,
IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
IN UINT8 BarIndex,
IN UINT64 Offset,
IN UINT64 Mask,
IN UINT64 Value,
IN UINT64 Delay,
OUT UINT64 *Result
);