inbv.c File Reference

#include <ntoskrnl.h>
#include "inbv/logo.h"

Include dependency graph for inbv.c:

Go to the source code of this file.

Classes
struct	_INBV_PROGRESS_STATE
struct	_BT_PROGRESS_INDICATOR

Typedefs
typedef struct _INBV_PROGRESS_STATE	INBV_PROGRESS_STATE
typedef struct _BT_PROGRESS_INDICATOR	BT_PROGRESS_INDICATOR
typedef struct _BT_PROGRESS_INDICATOR *	PBT_PROGRESS_INDICATOR

Functions
static PVOID	FindBitmapResource (_In_ PLOADER_PARAMETER_BLOCK LoaderBlock, _In_ ULONG ResourceId)
PUCHAR NTAPI	InbvGetResourceAddress (_In_ ULONG ResourceNumber)
BOOLEAN NTAPI	InbvDriverInitialize (_In_ PLOADER_PARAMETER_BLOCK LoaderBlock, _In_ ULONG Count)
VOID NTAPI	InbvAcquireLock (VOID)
VOID NTAPI	InbvReleaseLock (VOID)
VOID NTAPI	InbvEnableBootDriver (_In_ BOOLEAN Enable)
VOID NTAPI	InbvAcquireDisplayOwnership (VOID)
VOID NTAPI	InbvSetDisplayOwnership (_In_ BOOLEAN DisplayOwned)
BOOLEAN NTAPI	InbvCheckDisplayOwnership (VOID)
INBV_DISPLAY_STATE NTAPI	InbvGetDisplayState (VOID)
BOOLEAN NTAPI	InbvDisplayString (_In_ PCHAR String)
BOOLEAN NTAPI	InbvEnableDisplayString (_In_ BOOLEAN Enable)
VOID NTAPI	InbvInstallDisplayStringFilter (_In_ INBV_DISPLAY_STRING_FILTER DisplayFilter)
BOOLEAN NTAPI	InbvIsBootDriverInstalled (VOID)
VOID NTAPI	InbvNotifyDisplayOwnershipLost (_In_ INBV_RESET_DISPLAY_PARAMETERS Callback)
BOOLEAN NTAPI	InbvResetDisplay (VOID)
VOID NTAPI	InbvSetScrollRegion (_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom)
VOID NTAPI	InbvSetTextColor (_In_ ULONG Color)
VOID NTAPI	InbvSolidColorFill (_In_ ULONG Left, _In_ ULONG Top, _In_ ULONG Right, _In_ ULONG Bottom, _In_ ULONG Color)
VOID NTAPI	InbvBitBlt (_In_ PUCHAR Buffer, _In_ ULONG X, _In_ ULONG Y)
VOID NTAPI	InbvBufferToScreenBlt (_In_ PUCHAR Buffer, _In_ ULONG X, _In_ ULONG Y, _In_ ULONG Width, _In_ ULONG Height, _In_ ULONG Delta)
VOID NTAPI	InbvScreenToBufferBlt (_Out_ PUCHAR Buffer, _In_ ULONG X, _In_ ULONG Y, _In_ ULONG Width, _In_ ULONG Height, _In_ ULONG Delta)
VOID NTAPI	InbvSetProgressBarCoordinates (_In_ ULONG Left, _In_ ULONG Top)
	Sets the screen coordinates of the loading progress bar and enable it. More...
VOID NTAPI	InbvIndicateProgress (VOID)
	Gives some progress feedback, without specifying any explicit number of progress steps or percentage. The corresponding percentage is derived from the progress indicator's current count, capped to the number of expected calls to be made to this function (default: 25, see InbvProgressIndicator.Expected). More...
VOID NTAPI	InbvSetProgressBarSubset (_In_ ULONG Floor, _In_ ULONG Ceiling)
	Specifies a progress percentage sub-range. Further calls to InbvIndicateProgress() or InbvUpdateProgressBar() will update the progress percentage relative to this sub-range. In particular, the percentage provided to InbvUpdateProgressBar() is relative to this sub-range. More...
VOID NTAPI	InbvUpdateProgressBar (_In_ ULONG Percentage)
	Updates the progress bar percentage, relative to the current percentage sub-range previously set by InbvSetProgressBarSubset(). More...
NTSTATUS NTAPI	NtDisplayString (IN PUNICODE_STRING DisplayString)

Variables
static KSPIN_LOCK	BootDriverLock
static KIRQL	InbvOldIrql
static INBV_DISPLAY_STATE	InbvDisplayState = INBV_DISPLAY_STATE_DISABLED
BOOLEAN	InbvBootDriverInstalled = FALSE
static INBV_RESET_DISPLAY_PARAMETERS	InbvResetDisplayParameters = NULL
static BOOLEAN	InbvDisplayDebugStrings = FALSE
static INBV_DISPLAY_STRING_FILTER	InbvDisplayFilter = NULL
ULONG	ProgressBarLeft = 0
ULONG	ProgressBarTop = 0
BOOLEAN	ShowProgressBar = FALSE
static INBV_PROGRESS_STATE	InbvProgressState
static BT_PROGRESS_INDICATOR	InbvProgressIndicator = {0, 25, 0}
static ULONG	ResourceCount = 0
static PUCHAR	ResourceList [1+IDB_MAX_RESOURCE]
static ULONG	InbvTerminalTextColor = 37
static ULONG	InbvTerminalBkgdColor = 40

Typedef Documentation

BT_PROGRESS_INDICATOR

typedef struct _BT_PROGRESS_INDICATOR BT_PROGRESS_INDICATOR

INBV_PROGRESS_STATE

typedef struct _INBV_PROGRESS_STATE INBV_PROGRESS_STATE

PBT_PROGRESS_INDICATOR

typedef struct _BT_PROGRESS_INDICATOR * PBT_PROGRESS_INDICATOR

Function Documentation

FindBitmapResource()

static PVOID FindBitmapResource ( _In_ PLOADER_PARAMETER_BLOCK  LoaderBlock, _In_ ULONG  ResourceId  )

static

Definition at line 97 of file inbv.c.

{
    UNICODE_STRING UpString = RTL_CONSTANT_STRING(L"ntoskrnl.exe");
    UNICODE_STRING MpString = RTL_CONSTANT_STRING(L"ntkrnlmp.exe");
    PLIST_ENTRY NextEntry, ListHead;
    PLDR_DATA_TABLE_ENTRY LdrEntry;
    PIMAGE_RESOURCE_DATA_ENTRY ResourceDataEntry;
    LDR_RESOURCE_INFO ResourceInfo;
    NTSTATUS Status;
    PVOID Data = NULL;

    /* Loop the driver list */
    ListHead = &LoaderBlock->LoadOrderListHead;
    NextEntry = ListHead->Flink;
    while (NextEntry != ListHead)
    {
        /* Get the entry */
        LdrEntry = CONTAINING_RECORD(NextEntry,
                                     LDR_DATA_TABLE_ENTRY,
                                     InLoadOrderLinks);

        /* Check for a match */
        if (RtlEqualUnicodeString(&LdrEntry->BaseDllName, &UpString, TRUE) ||
            RtlEqualUnicodeString(&LdrEntry->BaseDllName, &MpString, TRUE))
        {
            /* Break out */
            break;
        }
    }

    /* Check if we found it */
    if (NextEntry != ListHead)
    {
        /* Try to find the resource */
        ResourceInfo.Type = 2; // RT_BITMAP;
        ResourceInfo.Name = ResourceId;
        ResourceInfo.Language = 0;
        Status = LdrFindResource_U(LdrEntry->DllBase,
                                   &ResourceInfo,
                                   RESOURCE_DATA_LEVEL,
                                   &ResourceDataEntry);
        if (NT_SUCCESS(Status))
        {
            /* Access the resource */
            ULONG Size = 0;
            Status = LdrAccessResource(LdrEntry->DllBase,
                                       ResourceDataEntry,
                                       &Data,
                                       &Size);
            if ((Data) && (ResourceId < 3))
            {
                KiBugCheckData[4] ^= RtlComputeCrc32(0, Data, Size);
            }
            if (!NT_SUCCESS(Status)) Data = NULL;
        }
    }

    /* Return the pointer */
    return Data;
}

Referenced by BootAnimInitialize(), and InbvDriverInitialize().

InbvAcquireDisplayOwnership()

VOID NTAPI InbvAcquireDisplayOwnership

(

VOID

)

Definition at line 289 of file inbv.c.

{
    /* Check if we have a callback and we're just acquiring it now */
    if ((InbvResetDisplayParameters) &&
        (InbvDisplayState == INBV_DISPLAY_STATE_LOST))
    {
        /* Call the callback */
        InbvResetDisplayParameters(80, 50);
    }

    /* Acquire the display */
    InbvDisplayState = INBV_DISPLAY_STATE_OWNED;
}

Referenced by HalHandleNMI(), HalReturnToFirmware(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

InbvAcquireLock()

VOID NTAPI InbvAcquireLock

(

VOID

)

Definition at line 219 of file inbv.c.

{
    KIRQL OldIrql;

    /* Check if we're at dispatch level or lower */
    OldIrql = KeGetCurrentIrql();
    if (OldIrql <= DISPATCH_LEVEL)
    {
        /* Loop until the lock is free */
        while (!KeTestSpinLock(&BootDriverLock));

        /* Raise IRQL to dispatch level */
        KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
    }

    /* Acquire the lock */
    KiAcquireSpinLock(&BootDriverLock);
    InbvOldIrql = OldIrql;
}

Referenced by BootAnimTickProgressBar(), BootLogoFadeIn(), DisplayBootBitmap(), FinalizeBootLogo(), InbvBitBlt(), InbvDisplayString(), InbvEnableBootDriver(), InbvNotifyDisplayOwnershipLost(), InbvRotationThread(), and InbvSolidColorFill().

InbvBitBlt()

VOID NTAPI InbvBitBlt	(	_In_ PUCHAR	Buffer,
		_In_ ULONG	X,
		_In_ ULONG	Y
	)

Definition at line 530 of file inbv.c.

{
    /* Check if we're installed and we own it */
    if (InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Acquire the lock */
        InbvAcquireLock();

        /* Do the blit */
        VidBitBlt(Buffer, X, Y);

        /* Release the lock */
        InbvReleaseLock();
    }
}

Referenced by BitBltPalette(), and PopShutdownHandler().

InbvBufferToScreenBlt()

VOID NTAPI InbvBufferToScreenBlt	(	_In_ PUCHAR	Buffer,
		_In_ ULONG	X,
		_In_ ULONG	Y,
		_In_ ULONG	Width,
		_In_ ULONG	Height,
		_In_ ULONG	Delta
	)

Definition at line 552 of file inbv.c.

{
    /* Check if we're installed and we own it */
    if (InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Do the blit */
        VidBufferToScreenBlt(Buffer, X, Y, Width, Height, Delta);
    }
}

Referenced by DisplayBootBitmap().

InbvCheckDisplayOwnership()

BOOLEAN NTAPI InbvCheckDisplayOwnership

(

VOID

)

Definition at line 315 of file inbv.c.

{
    /* Return if we own it or not */
    return InbvDisplayState != INBV_DISPLAY_STATE_LOST;
}

Referenced by InbvMonitorThread(), KdpScreenRelease(), and PopShutdownHandler().

InbvDisplayString()

BOOLEAN NTAPI InbvDisplayString

(

_In_ PCHAR

String

)

Definition at line 331 of file inbv.c.

{
    /* Make sure we own the display */
    if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED)
    {
        /* If we're not allowed, return success anyway */
        if (!InbvDisplayDebugStrings) return TRUE;

        /* Check if a filter is installed */
        if (InbvDisplayFilter) InbvDisplayFilter(&String);

        /* Acquire the lock */
        InbvAcquireLock();

        /* Make sure we're installed and display the string */
        if (InbvBootDriverInstalled) VidDisplayString((PUCHAR)String);

        /* Print the string on the EMS port */
        HeadlessDispatch(HeadlessCmdPutString,
                         String,
                         strlen(String) + sizeof(ANSI_NULL),
                         NULL,
                         NULL);

        /* Release the lock */
        InbvReleaseLock();

        /* All done */
        return TRUE;
    }

    /* We don't own it, fail */
    return FALSE;
}

Referenced by HalDisplayString(), HalHandleNMI(), KeBugCheckWithTf(), KeGetBugMessageText(), KiDisplayBlueScreen(), KiDumpParameterImages(), NtDisplayString(), Phase1InitializationDiscard(), and PopShutdownHandler().

InbvDriverInitialize()

BOOLEAN NTAPI InbvDriverInitialize	(	_In_ PLOADER_PARAMETER_BLOCK	LoaderBlock,
		_In_ ULONG	Count
	)

Definition at line 175 of file inbv.c.

{
    PCHAR CommandLine;
    BOOLEAN ResetMode = FALSE; // By default do not reset the video mode
    ULONG i;

    /* Quit if we're already installed */
    if (InbvBootDriverInstalled) return TRUE;

    /* Initialize the lock and check the current display state */
    KeInitializeSpinLock(&BootDriverLock);
    if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED)
    {
        /* Reset the video mode in case we do not have a custom boot logo */
        CommandLine = (LoaderBlock->LoadOptions ? _strupr(LoaderBlock->LoadOptions) : NULL);
        ResetMode   = (CommandLine == NULL) || (strstr(CommandLine, "BOOTLOGO") == NULL);
    }

    /* Initialize the video */
    InbvBootDriverInstalled = VidInitialize(ResetMode);
    if (InbvBootDriverInstalled)
    {
        /* Find bitmap resources in the kernel */
        ResourceCount = min(Count, RTL_NUMBER_OF(ResourceList) - 1);
        for (i = 1; i <= ResourceCount; i++)
        {
            /* Do the lookup */
            ResourceList[i] = FindBitmapResource(LoaderBlock, i);
        }

        /* Set the progress bar ranges */
        InbvSetProgressBarSubset(0, 100);

        // BootAnimInitialize(LoaderBlock, Count);
    }

    /* Return install state */
    return InbvBootDriverInstalled;
}

Referenced by Phase1InitializationDiscard().

InbvEnableBootDriver()

VOID NTAPI InbvEnableBootDriver

(

_In_ BOOLEAN

Enable

)

Definition at line 257 of file inbv.c.

{
    /* Check if we're installed */
    if (InbvBootDriverInstalled)
    {
        /* Check for lost state */
        if (InbvDisplayState >= INBV_DISPLAY_STATE_LOST) return;

        /* Acquire the lock */
        InbvAcquireLock();

        /* Cleanup the screen if we own it */
        if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED) VidCleanUp();

        /* Set the new display state */
        InbvDisplayState = Enable ? INBV_DISPLAY_STATE_OWNED :
                                    INBV_DISPLAY_STATE_DISABLED;

        /* Release the lock */
        InbvReleaseLock();
    }
    else
    {
        /* Set the new display state */
        InbvDisplayState = Enable ? INBV_DISPLAY_STATE_OWNED :
                                    INBV_DISPLAY_STATE_DISABLED;
    }
}

Referenced by Phase1InitializationDiscard().

InbvEnableDisplayString()

BOOLEAN NTAPI InbvEnableDisplayString

(

_In_ BOOLEAN

Enable

)

Definition at line 369 of file inbv.c.

{
    BOOLEAN OldSetting;

    /* Get the old setting */
    OldSetting = InbvDisplayDebugStrings;

    /* Update it */
    InbvDisplayDebugStrings = Enable;

    /* Return the old setting */
    return OldSetting;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), Phase1InitializationDiscard(), and PopShutdownHandler().

InbvGetDisplayState()

INBV_DISPLAY_STATE NTAPI InbvGetDisplayState

(

VOID

)

Definition at line 323 of file inbv.c.

{
    /* Return the actual state */
    return InbvDisplayState;
}

Referenced by BootAnimTickProgressBar(), BootLogoFadeIn(), FinalizeBootLogo(), and InbvRotationThread().

InbvGetResourceAddress()

PUCHAR NTAPI InbvGetResourceAddress

(

_In_ ULONG

ResourceNumber

)

Definition at line 162 of file inbv.c.

{
    /* Validate the resource number */
    if (ResourceNumber > ResourceCount) return NULL;

    /* Return the address */
    return ResourceList[ResourceNumber];
}

Referenced by DisplayBootBitmap(), and PopShutdownHandler().

InbvIndicateProgress()

VOID NTAPI InbvIndicateProgress

(

VOID

)

Gives some progress feedback, without specifying any explicit number of progress steps or percentage. The corresponding percentage is derived from the progress indicator's current count, capped to the number of expected calls to be made to this function (default: 25, see InbvProgressIndicator.Expected).

Returns

None.

Definition at line 625 of file inbv.c.

{
    ULONG Percentage;

    /* Increase progress */
    InbvProgressIndicator.Count++;

    /* Compute the new percentage - Don't go over 100% */
    Percentage = 100 * InbvProgressIndicator.Count /
                       InbvProgressIndicator.Expected;
    Percentage = min(Percentage, 99);

    if (Percentage != InbvProgressIndicator.Percentage)
    {
        /* Percentage has changed, update the progress bar */
        InbvProgressIndicator.Percentage = Percentage;
        InbvUpdateProgressBar(Percentage);
    }
}

Referenced by IopInitializeBuiltinDriver(), and IopInitializeSystemDrivers().

InbvInstallDisplayStringFilter()

VOID NTAPI InbvInstallDisplayStringFilter

(

_In_ INBV_DISPLAY_STRING_FILTER

DisplayFilter

)

Definition at line 386 of file inbv.c.

{
    /* Save the filter */
    InbvDisplayFilter = DisplayFilter;
}

Referenced by DisplayBootBitmap(), DisplayFilter(), HalHandleNMI(), KdpScreenAcquire(), and KiDisplayBlueScreen().

InbvIsBootDriverInstalled()

BOOLEAN NTAPI InbvIsBootDriverInstalled

(

VOID

)

Definition at line 395 of file inbv.c.

{
    /* Return driver state */
    return InbvBootDriverInstalled;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KdpScreenRelease(), KiDisplayBlueScreen(), and PopShutdownHandler().

InbvNotifyDisplayOwnershipLost()

VOID NTAPI InbvNotifyDisplayOwnershipLost

(

_In_ INBV_RESET_DISPLAY_PARAMETERS

Callback

)

Definition at line 403 of file inbv.c.

{
    /* Check if we're installed */
    if (InbvBootDriverInstalled)
    {
        /* Acquire the lock and cleanup if we own the screen */
        InbvAcquireLock();
        if (InbvDisplayState != INBV_DISPLAY_STATE_LOST) VidCleanUp();

        /* Set the reset callback and display state */
        InbvResetDisplayParameters = Callback;
        InbvDisplayState = INBV_DISPLAY_STATE_LOST;

        /* Release the lock */
        InbvReleaseLock();
    }
    else
    {
        /* Set the reset callback and display state */
        InbvResetDisplayParameters = Callback;
        InbvDisplayState = INBV_DISPLAY_STATE_LOST;
    }
}

Referenced by InbvMonitorThread(), IntVideoPortInbvCleanup(), IntVideoPortInbvInitialize(), KdpScreenRelease(), Phase1InitializationDiscard(), ScrInbvCleanup(), and ScrInbvInitialize().

InbvReleaseLock()

VOID NTAPI InbvReleaseLock

(

VOID

)

Definition at line 241 of file inbv.c.

{
    KIRQL OldIrql;

    /* Capture the old IRQL */
    OldIrql = InbvOldIrql;

    /* Release the driver lock */
    KiReleaseSpinLock(&BootDriverLock);

    /* If we were at dispatch level or lower, restore the old IRQL */
    if (InbvOldIrql <= DISPATCH_LEVEL) KeLowerIrql(OldIrql);
}

Referenced by BootAnimTickProgressBar(), BootLogoFadeIn(), DisplayBootBitmap(), FinalizeBootLogo(), InbvBitBlt(), InbvDisplayString(), InbvEnableBootDriver(), InbvNotifyDisplayOwnershipLost(), InbvRotationThread(), and InbvSolidColorFill().

InbvResetDisplay()

BOOLEAN NTAPI InbvResetDisplay

(

VOID

)

Definition at line 430 of file inbv.c.

{
    /* Check if we're installed and we own it */
    if (InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Do the reset */
        VidResetDisplay(TRUE);
        return TRUE;
    }

    /* Nothing to reset */
    return FALSE;
}

Referenced by HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

InbvScreenToBufferBlt()

VOID NTAPI InbvScreenToBufferBlt	(	_Out_ PUCHAR	Buffer,
		_In_ ULONG	X,
		_In_ ULONG	Y,
		_In_ ULONG	Width,
		_In_ ULONG	Height,
		_In_ ULONG	Delta
	)

Definition at line 571 of file inbv.c.

{
    /* Check if we're installed and we own it */
    if (InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Do the blit */
        VidScreenToBufferBlt(Buffer, X, Y, Width, Height, Delta);
    }
}

Referenced by DisplayBootBitmap().

InbvSetDisplayOwnership()

VOID NTAPI InbvSetDisplayOwnership

(

_In_ BOOLEAN

DisplayOwned

)

Definition at line 305 of file inbv.c.

{
    /* Set the new display state */
    InbvDisplayState = DisplayOwned ? INBV_DISPLAY_STATE_OWNED :
                                      INBV_DISPLAY_STATE_LOST;
}

InbvSetProgressBarCoordinates()

VOID NTAPI InbvSetProgressBarCoordinates	(	_In_ ULONG	Left,
		_In_ ULONG	Top
	)

Sets the screen coordinates of the loading progress bar and enable it.

Parameters

[in]	Left
[in]	Top	The left/top coordinates.

Returns

None.

Definition at line 600 of file inbv.c.

{
    /* Update the coordinates */
    ProgressBarLeft = Left;
    ProgressBarTop  = Top;

    /* Enable the progress bar */
    ShowProgressBar = TRUE;
}

Referenced by DisplayBootBitmap().

InbvSetProgressBarSubset()

VOID NTAPI InbvSetProgressBarSubset	(	_In_ ULONG	Floor,
		_In_ ULONG	Ceiling
	)

Specifies a progress percentage sub-range. Further calls to InbvIndicateProgress() or InbvUpdateProgressBar() will update the progress percentage relative to this sub-range. In particular, the percentage provided to InbvUpdateProgressBar() is relative to this sub-range.

Parameters

[in]	Floor	The lower bound percentage of the sub-range (default: 0).
[in]	Ceiling	The upper bound percentage of the sub-range (default: 100).

Returns

None.

Definition at line 663 of file inbv.c.

{
    /* Sanity checks */
    ASSERT(Floor < Ceiling);
    ASSERT(Ceiling <= 100);

    /* Update the progress bar state */
    InbvProgressState.Floor = Floor * 100;
    InbvProgressState.Ceiling = Ceiling * 100;
    InbvProgressState.Bias = Ceiling - Floor;
}

Referenced by BootAnimInitialize(), InbvDriverInitialize(), and Phase1InitializationDiscard().

InbvSetScrollRegion()

VOID NTAPI InbvSetScrollRegion	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	Right,
		_In_ ULONG	Bottom
	)

Definition at line 447 of file inbv.c.

{
    /* Just call bootvid */
    VidSetScrollRegion(Left, Top, Right, Bottom);
}

Referenced by DisplayBootBitmap(), HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

InbvSetTextColor()

VOID NTAPI InbvSetTextColor

(

_In_ ULONG

Color

)

Definition at line 459 of file inbv.c.

{
    HEADLESS_CMD_SET_COLOR HeadlessSetColor;

    /* Set color for EMS port */
#ifdef INBV_HEADLESS_COLORS
    InbvTerminalTextColor = 30 + CGA_TO_ANSI_COLOR(Color);
#else
    InbvTerminalTextColor = 37;
#endif
    HeadlessSetColor.TextColor = InbvTerminalTextColor;
    HeadlessSetColor.BkgdColor = InbvTerminalBkgdColor;
    HeadlessDispatch(HeadlessCmdSetColor,
                     &HeadlessSetColor,
                     sizeof(HeadlessSetColor),
                     NULL,
                     NULL);

    /* Update the text color */
    VidSetTextColor(Color);
}

Referenced by DisplayBootBitmap(), HalHandleNMI(), KdpScreenAcquire(), and KiDisplayBlueScreen().

InbvSolidColorFill()

VOID NTAPI InbvSolidColorFill	(	_In_ ULONG	Left,
		_In_ ULONG	Top,
		_In_ ULONG	Right,
		_In_ ULONG	Bottom,
		_In_ ULONG	Color
	)

Definition at line 484 of file inbv.c.

{
    HEADLESS_CMD_SET_COLOR HeadlessSetColor;

    /* Make sure we own it */
    if (InbvDisplayState == INBV_DISPLAY_STATE_OWNED)
    {
        /* Acquire the lock */
        InbvAcquireLock();

        /* Check if we're installed */
        if (InbvBootDriverInstalled)
        {
            /* Call bootvid */
            VidSolidColorFill(Left, Top, Right, Bottom, (UCHAR)Color);
        }

        /* Set color for EMS port and clear display */
#ifdef INBV_HEADLESS_COLORS
        InbvTerminalBkgdColor = 40 + CGA_TO_ANSI_COLOR(Color);
#else
        InbvTerminalBkgdColor = 40;
#endif
        HeadlessSetColor.TextColor = InbvTerminalTextColor;
        HeadlessSetColor.BkgdColor = InbvTerminalBkgdColor;
        HeadlessDispatch(HeadlessCmdSetColor,
                         &HeadlessSetColor,
                         sizeof(HeadlessSetColor),
                         NULL,
                         NULL);
        HeadlessDispatch(HeadlessCmdClearDisplay,
                         NULL, 0,
                         NULL, NULL);

        /* Release the lock */
        InbvReleaseLock();
    }
}

Referenced by DisplayBootBitmap(), HalHandleNMI(), KdpScreenAcquire(), KiDisplayBlueScreen(), and PopShutdownHandler().

InbvUpdateProgressBar()

VOID NTAPI InbvUpdateProgressBar

(

_In_ ULONG

Percentage

)

Updates the progress bar percentage, relative to the current percentage sub-range previously set by InbvSetProgressBarSubset().

Parameters

[in]

Percentage

The progress percentage, relative to the current sub-range.

Returns

None.

Definition at line 689 of file inbv.c.

{
    ULONG TotalProgress;

    /* Make sure the progress bar is enabled, that we own and are installed */
    if (ShowProgressBar &&
        InbvBootDriverInstalled &&
        (InbvDisplayState == INBV_DISPLAY_STATE_OWNED))
    {
        /* Compute the total progress and tick the progress bar */
        TotalProgress = InbvProgressState.Floor + (Percentage * InbvProgressState.Bias);
        // TotalProgress /= (100 * 100);

        BootAnimTickProgressBar(TotalProgress);
    }
}

Referenced by InbvIndicateProgress(), and Phase1InitializationDiscard().

NtDisplayString()

NTSTATUS NTAPI NtDisplayString

(

IN PUNICODE_STRING

DisplayString

)

Definition at line 709 of file inbv.c.

{
    NTSTATUS Status;
    UNICODE_STRING CapturedString;
    OEM_STRING OemString;
    ULONG OemLength;
    KPROCESSOR_MODE PreviousMode;

    PAGED_CODE();

    PreviousMode = ExGetPreviousMode();

    /* We require the TCB privilege */
    if (!SeSinglePrivilegeCheck(SeTcbPrivilege, PreviousMode))
        return STATUS_PRIVILEGE_NOT_HELD;

    /* Capture the string */
    Status = ProbeAndCaptureUnicodeString(&CapturedString, PreviousMode, DisplayString);
    if (!NT_SUCCESS(Status))
        return Status;

    /* Do not display the string if it is empty */
    if (CapturedString.Length == 0 || CapturedString.Buffer == NULL)
    {
        Status = STATUS_SUCCESS;
        goto Quit;
    }

    /*
     * Convert the string since INBV understands only ANSI/OEM. Allocate the
     * string buffer in non-paged pool because INBV passes it down to BOOTVID.
     * We cannot perform the allocation using RtlUnicodeStringToOemString()
     * since its allocator uses PagedPool.
     */
    OemLength = RtlUnicodeStringToOemSize(&CapturedString);
    if (OemLength > MAXUSHORT)
    {
        Status = STATUS_BUFFER_OVERFLOW;
        goto Quit;
    }
    RtlInitEmptyAnsiString((PANSI_STRING)&OemString, NULL, (USHORT)OemLength);
    OemString.Buffer = ExAllocatePoolWithTag(NonPagedPool, OemLength, TAG_OSTR);
    if (OemString.Buffer == NULL)
    {
        Status = STATUS_NO_MEMORY;
        goto Quit;
    }
    Status = RtlUnicodeStringToOemString(&OemString, &CapturedString, FALSE);
    if (!NT_SUCCESS(Status))
    {
        ExFreePoolWithTag(OemString.Buffer, TAG_OSTR);
        goto Quit;
    }

    /* Display the string */
    InbvDisplayString(OemString.Buffer);

    /* Free the string buffer */
    ExFreePoolWithTag(OemString.Buffer, TAG_OSTR);

    Status = STATUS_SUCCESS;

Quit:
    /* Free the captured string */
    ReleaseCapturedUnicodeString(&CapturedString, PreviousMode);

    return Status;
}

Variable Documentation

BootDriverLock

KSPIN_LOCK BootDriverLock

static

Definition at line 36 of file inbv.c.

Referenced by InbvAcquireLock(), InbvDriverInitialize(), and InbvReleaseLock().

InbvBootDriverInstalled

BOOLEAN InbvBootDriverInstalled = FALSE

Definition at line 39 of file inbv.c.

Referenced by BootAnimInitialize(), BootAnimTickProgressBar(), BootLogoFadeIn(), DisplayBootBitmap(), InbvBitBlt(), InbvBufferToScreenBlt(), InbvDisplayString(), InbvDriverInitialize(), InbvEnableBootDriver(), InbvIsBootDriverInstalled(), InbvNotifyDisplayOwnershipLost(), InbvResetDisplay(), InbvScreenToBufferBlt(), InbvSolidColorFill(), InbvUpdateProgressBar(), and Phase1InitializationDiscard().

InbvDisplayDebugStrings

BOOLEAN InbvDisplayDebugStrings = FALSE

static

Definition at line 42 of file inbv.c.

Referenced by InbvDisplayString(), and InbvEnableDisplayString().

InbvDisplayFilter

INBV_DISPLAY_STRING_FILTER InbvDisplayFilter = NULL

static

Definition at line 43 of file inbv.c.

Referenced by InbvDisplayString(), and InbvInstallDisplayStringFilter().

InbvDisplayState

INBV_DISPLAY_STATE InbvDisplayState = INBV_DISPLAY_STATE_DISABLED

static

Definition at line 38 of file inbv.c.

Referenced by InbvAcquireDisplayOwnership(), InbvBitBlt(), InbvBufferToScreenBlt(), InbvCheckDisplayOwnership(), InbvDisplayString(), InbvDriverInitialize(), InbvEnableBootDriver(), InbvGetDisplayState(), InbvNotifyDisplayOwnershipLost(), InbvResetDisplay(), InbvScreenToBufferBlt(), InbvSetDisplayOwnership(), InbvSolidColorFill(), and InbvUpdateProgressBar().

InbvOldIrql

KIRQL InbvOldIrql

static

Definition at line 37 of file inbv.c.

Referenced by InbvAcquireLock(), and InbvReleaseLock().

InbvProgressIndicator

BT_PROGRESS_INDICATOR InbvProgressIndicator = {0, 25, 0}

static

Definition at line 48 of file inbv.c.

Referenced by InbvIndicateProgress().

InbvProgressState

INBV_PROGRESS_STATE InbvProgressState

static

Definition at line 47 of file inbv.c.

Referenced by InbvSetProgressBarSubset(), and InbvUpdateProgressBar().

InbvResetDisplayParameters

INBV_RESET_DISPLAY_PARAMETERS InbvResetDisplayParameters = NULL

static

Definition at line 40 of file inbv.c.

Referenced by InbvAcquireDisplayOwnership(), and InbvNotifyDisplayOwnershipLost().

InbvTerminalBkgdColor

ULONG InbvTerminalBkgdColor = 40

static

Definition at line 89 of file inbv.c.

Referenced by InbvSetTextColor(), and InbvSolidColorFill().

InbvTerminalTextColor

ULONG InbvTerminalTextColor = 37

static

Definition at line 88 of file inbv.c.

Referenced by InbvSetTextColor(), and InbvSolidColorFill().

ProgressBarLeft

ULONG ProgressBarLeft = 0

Definition at line 45 of file inbv.c.

Referenced by BootAnimTickProgressBar(), InbvRotationThread(), and InbvSetProgressBarCoordinates().

ProgressBarTop

ULONG ProgressBarTop = 0

Definition at line 45 of file inbv.c.

Referenced by BootAnimTickProgressBar(), InbvRotationThread(), and InbvSetProgressBarCoordinates().

ResourceCount

ULONG ResourceCount = 0

static

Definition at line 50 of file inbv.c.

Referenced by BootAnimInitialize(), ClassInterpretLBProvisioningLogPage(), HalpAssignPCISlotResources(), InbvDriverInitialize(), InbvGetResourceAddress(), IntVideoPortPnPStartDevice(), IsaPnpCreateLogicalDeviceRequirements(), IsaPnpCreateLogicalDeviceResources(), IsaPnpCreateReadPortDORequirements(), LdrEnumResources(), NdisIPnPStartDevice(), PcNewResourceList(), Test_Data(), and Test_Parameters().

ResourceList

PUCHAR ResourceList[1+IDB_MAX_RESOURCE]

static

Definition at line 51 of file inbv.c.

ShowProgressBar

BOOLEAN ShowProgressBar = FALSE

Definition at line 46 of file inbv.c.

Referenced by BootAnimTickProgressBar(), DisplayBootBitmap(), InbvSetProgressBarCoordinates(), and InbvUpdateProgressBar().