Source code of Windows XP (NT5)
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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
hdlsblk.h
Abstract:
This module contains the public header information (function prototypes,
data and type declarations) for the Headless Loader Block information.
Author:
Sean Selitrennikoff (v-seans) Oct, 1999
Revision History:
--*/
#ifndef _HDLSBLK_
#define _HDLSBLK_
//
// Block for passing headless parameters from the loader to the kernel.
//
typedef struct _HEADLESS_LOADER_BLOCK {
//
// Where did the COM parameters come from.
//
BOOLEAN UsedBiosSettings;
//
// COM parameters.
//
UCHAR DataBits;
UCHAR StopBits;
BOOLEAN Parity;
ULONG BaudRate;
ULONG PortNumber;
PUCHAR PortAddress;
//
// PCI device settings.
//
USHORT PciDeviceId;
USHORT PciVendorId;
UCHAR PciBusNumber;
UCHAR PciSlotNumber;
UCHAR PciFunctionNumber;
ULONG PciFlags;
GUID SystemGUID; // Machine's GUID.
BOOLEAN IsMMIODevice; // Is the UART in SYSIO or MMIO space
//
UCHAR TerminalType; // What kind of terminal do we think
// we're talking to?
// 0 = VT100
// 1 = VT100+
// 2 = VT-UTF8
// 3 = PC ANSI
// 4-255 = reserved
} HEADLESS_LOADER_BLOCK, *PHEADLESS_LOADER_BLOCK;
#endif // _HDLSBLK_