pcbios.h File Reference

#include <pshpack1.h>
#include <poppack.h>

Include dependency graph for pcbios.h:

Go to the source code of this file.

Classes
struct	BIOS_MEMORY_MAP
struct	_ACPI_BIOS_DATA
struct	DWORDREGS
struct	WORDREGS
struct	BYTEREGS
union	REGS

Macros
#define	MAX_BIOS_DESCRIPTORS   80
#define	INT386_SUCCESS(regs)   ((regs.x.eflags & EFLAGS_CF) == 0)
#define	REGS_EAX   0
#define	REGS_EBX   4
#define	REGS_ECX   8
#define	REGS_EDX   12
#define	REGS_ESI   16
#define	REGS_EDI   20
#define	REGS_EBP   24
#define	REGS_DS   28
#define	REGS_ES   30
#define	REGS_FS   32
#define	REGS_GS   34
#define	REGS_EFLAGS   36
#define	REGS_SIZE   40

Typedefs
typedef struct BIOS_MEMORY_MAP *	PBIOS_MEMORY_MAP
typedef struct _ACPI_BIOS_DATA	ACPI_BIOS_DATA
typedef struct _ACPI_BIOS_DATA *	PACPI_BIOS_DATA

Enumerations
enum	BIOS_MEMORY_TYPE {   BiosMemoryUsable = 1, BiosMemoryBootLoader, BiosMemoryBootStrap, BiosMemoryReserved,   BiosMemoryUsable = 1, BiosMemoryReserved = 2, BiosMemoryAcpiReclaim = 3, BiosMemoryAcpiNvs = 4,   BiosMemoryUnusable = 5, BiosMemoryDisabled = 6, BiosMemoryPersistent = 7, BiosMemoryUndefined08 = 8,   BiosMemoryUndefined09 = 9, BiosMemoryUndefined10 = 10, BiosMemoryUndefined11 = 11, BiosMemoryOemDefined12 = 12 }

Functions
	C_ASSERT (FIELD_OFFSET(BIOS_MEMORY_MAP, ExtendedAttributes)==20)
	C_ASSERT (sizeof(BIOS_MEMORY_MAP)==24)
int __cdecl	Int386 (int ivec, REGS *in, REGS *out)
VOID __cdecl	ChainLoadBiosBootSectorCode (IN UCHAR BootDrive OPTIONAL, IN ULONG BootPartition OPTIONAL)
VOID __cdecl	Relocator16Boot (IN REGS *In, IN USHORT StackSegment, IN USHORT StackPointer, IN USHORT CodeSegment, IN USHORT CodePointer)
VOID __cdecl	Reboot (VOID)
VOID	DetectHardware (VOID)

Macro Definition Documentation

INT386_SUCCESS

#define INT386_SUCCESS

(

regs

)

((regs.x.eflags & EFLAGS_CF) == 0)

Definition at line 167 of file pcbios.h.

MAX_BIOS_DESCRIPTORS

#define MAX_BIOS_DESCRIPTORS   80

Definition at line 12 of file pcbios.h.

REGS_DS

#define REGS_DS   28

Definition at line 193 of file pcbios.h.

REGS_EAX

#define REGS_EAX   0

Definition at line 186 of file pcbios.h.

REGS_EBP

#define REGS_EBP   24

Definition at line 192 of file pcbios.h.

REGS_EBX

#define REGS_EBX   4

Definition at line 187 of file pcbios.h.

REGS_ECX

#define REGS_ECX   8

Definition at line 188 of file pcbios.h.

REGS_EDI

#define REGS_EDI   20

Definition at line 191 of file pcbios.h.

REGS_EDX

#define REGS_EDX   12

Definition at line 189 of file pcbios.h.

REGS_EFLAGS

#define REGS_EFLAGS   36

Definition at line 197 of file pcbios.h.

REGS_ES

#define REGS_ES   30

Definition at line 194 of file pcbios.h.

REGS_ESI

#define REGS_ESI   16

Definition at line 190 of file pcbios.h.

REGS_FS

#define REGS_FS   32

Definition at line 195 of file pcbios.h.

REGS_GS

#define REGS_GS   34

Definition at line 196 of file pcbios.h.

REGS_SIZE

#define REGS_SIZE   40

Definition at line 198 of file pcbios.h.

Typedef Documentation

ACPI_BIOS_DATA

typedef struct _ACPI_BIOS_DATA ACPI_BIOS_DATA

PACPI_BIOS_DATA

typedef struct _ACPI_BIOS_DATA * PACPI_BIOS_DATA

PBIOS_MEMORY_MAP

typedef struct BIOS_MEMORY_MAP * PBIOS_MEMORY_MAP

Enumeration Type Documentation

BIOS_MEMORY_TYPE

enum BIOS_MEMORY_TYPE

Enumerator
BiosMemoryUsable
BiosMemoryBootLoader
BiosMemoryBootStrap
BiosMemoryReserved
BiosMemoryUsable
BiosMemoryReserved
BiosMemoryAcpiReclaim
BiosMemoryAcpiNvs
BiosMemoryUnusable
BiosMemoryDisabled
BiosMemoryPersistent
BiosMemoryUndefined08
BiosMemoryUndefined09
BiosMemoryUndefined10
BiosMemoryUndefined11
BiosMemoryOemDefined12

Definition at line 14 of file pcbios.h.

{
    // ACPI 1.0.
    BiosMemoryUsable        =  1,
    BiosMemoryReserved      =  2,
    BiosMemoryAcpiReclaim   =  3,
    BiosMemoryAcpiNvs       =  4,
    // ACPI 3.0.
    BiosMemoryUnusable      =  5,
    // ACPI 4.0.
    BiosMemoryDisabled      =  6,
    // ACPI 6.0.
    BiosMemoryPersistent    =  7,
    BiosMemoryUndefined08   =  8,
    BiosMemoryUndefined09   =  9,
    BiosMemoryUndefined10   = 10,
    BiosMemoryUndefined11   = 11,
    BiosMemoryOemDefined12  = 12
    // BiosMemoryUndefinedNN   = 13-0xEFFFFFFF
    // BiosMemoryOemDefinedNN  = 0xF0000000-0xFFFFFFFF
} BIOS_MEMORY_TYPE;

Function Documentation

C_ASSERT() [1/2]

C_ASSERT

(

FIELD_OFFSET(BIOS_MEMORY_MAP, ExtendedAttributes)

= =20

)

C_ASSERT() [2/2]

C_ASSERT

(

sizeof(BIOS_MEMORY_MAP)

= =24

)

ChainLoadBiosBootSectorCode()

VOID __cdecl ChainLoadBiosBootSectorCode	(	IN UCHAR BootDrive	OPTIONAL,
		IN ULONG BootPartition	OPTIONAL
	)

Definition at line 92 of file i386rtl.c.

{
    REGS Regs;

    RtlZeroMemory(&Regs, sizeof(Regs));

    /* Set the boot drive and the boot partition */
    Regs.b.dl = (UCHAR)(BootDrive ? BootDrive : FrldrBootDrive);
    Regs.b.dh = (UCHAR)(BootPartition ? BootPartition : FrldrBootPartition);

    /*
     * Don't stop the floppy drive motor when we are just booting a bootsector,
     * a drive, or a partition. If we were to stop the floppy motor, the BIOS
     * wouldn't be informed and if the next read is to a floppy then the BIOS
     * will still think the motor is on and this will result in a read error.
     */
    // DiskStopFloppyMotor();

    Relocator16Boot(&Regs,
                    /* Stack segment:pointer */
                    0x0000, 0x7C00,
                    /* Code segment:pointer */
                    0x0000, 0x7C00);
}

DetectHardware()

VOID DetectHardware

(

VOID

)

Int386()

int __cdecl Int386	(	int	ivec,
		REGS *	in,
		REGS *	out
	)

Referenced by BiosIsVesaDdcSupported(), BiosIsVesaSupported(), BiosVesaReadEdid(), delay(), DiskGetExtendedDriveParameters(), DiskInt13ExtensionsSupported(), DiskResetController(), FindApmBios(), GetEbdaLocation(), GetExtendedMemoryConfiguration(), KeStallExecutionProcessor(), PcConsGetCh(), PcConsKbHit(), PcConsPutChar(), PcDiskGetDriveGeometry(), PcDiskReadLogicalSectorsCHS(), PcDiskReadLogicalSectorsLBA(), PcFindPciBios(), PcGetExtendedBIOSData(), PcGetTime(), PcHwIdle(), PcMemGetBiosMemoryMap(), PcMemGetConventionalMemorySize(), PcVideoDefineCursor(), PcVideoDetectVideoCard(), PcVideoDisableCursorEmulation(), PcVideoGetFontsFromFirmware(), PcVideoSelectAlternatePrintScreen(), PcVideoSetBiosMode(), PcVideoSetBiosVesaMode(), PcVideoSetBlinkBit(), PcVideoSetFont8x14(), PcVideoSetFont8x8(), PcVideoSetMemoryBank(), PcVideoSetTextCursorPosition(), PcVideoSetVerticalResolution(), and PcVideoVesaGetSVGAModeInformation().

Reboot()

VOID __cdecl Reboot

(

VOID

)

Definition at line 37 of file hardware.h.

{
    DbgBreakPoint();
}

Relocator16Boot()

VOID __cdecl Relocator16Boot	(	IN REGS *	In,
		IN USHORT	StackSegment,
		IN USHORT	StackPointer,
		IN USHORT	CodeSegment,
		IN USHORT	CodePointer
	)

Referenced by ChainLoadBiosBootSectorCode().