xboxvideo.c File Reference

#include <freeldr.h>
#include "../../vidfb.h"
#include <debug.h>

Include dependency graph for xboxvideo.c:

Go to the source code of this file.

Macros
#define	FB_SIZE_MB   4
#define	MAKE_COLOR(Red, Green, Blue)   (0xff000000 | (((Red) & 0xff) << 16) | (((Green) & 0xff) << 8) | ((Blue) & 0xff))

Functions
	DBG_DEFAULT_CHANNEL (UI)
VOID	XboxVideoClearScreen (UCHAR Attr)
VOID	XboxVideoPutChar (int Ch, UCHAR Attr, unsigned X, unsigned Y)
static UCHAR	NvGetCrtc (UCHAR Index)
static ULONG	XboxGetFramebufferSize (_In_ ULONG_PTR Offset)
VOID	XboxVideoInit (VOID)
VIDEODISPLAYMODE	XboxVideoSetDisplayMode (PCSTR DisplayMode, BOOLEAN Init)
VOID	XboxVideoGetDisplaySize (PULONG Width, PULONG Height, PULONG Depth)
ULONG	XboxVideoGetBufferSize (VOID)
VOID	XboxVideoGetFontsFromFirmware (PULONG RomFontPointers)
VOID	XboxVideoSetTextCursorPosition (UCHAR X, UCHAR Y)
VOID	XboxVideoHideShowTextCursor (BOOLEAN Show)
VOID	XboxVideoCopyOffScreenBufferToVRAM (PVOID Buffer)
BOOLEAN	XboxVideoIsPaletteFixed (VOID)
VOID	XboxVideoSetPaletteColor (UCHAR Color, UCHAR Red, UCHAR Green, UCHAR Blue)
VOID	XboxVideoGetPaletteColor (UCHAR Color, UCHAR *Red, UCHAR *Green, UCHAR *Blue)
VOID	XboxVideoSync (VOID)
VOID	XboxVideoPrepareForReactOS (VOID)

Variables
ULONG	NvBase = 0xFD000000
ULONG_PTR	FrameBuffer
ULONG	FrameBufferSize
multiboot_info_t *	MultibootInfoPtr

Macro Definition Documentation

FB_SIZE_MB

#define FB_SIZE_MB   4

Definition at line 32 of file xboxvideo.c.

MAKE_COLOR

#define MAKE_COLOR	(		Red,
			Green,
			Blue
	)		(0xff000000 | (((Red) & 0xff) << 16) | (((Green) & 0xff) << 8) | ((Blue) & 0xff))

Definition at line 34 of file xboxvideo.c.

Function Documentation

DBG_DEFAULT_CHANNEL()

DBG_DEFAULT_CHANNEL

(

UI

)

NvGetCrtc()

static UCHAR NvGetCrtc ( UCHAR  Index )

static

Definition at line 49 of file xboxvideo.c.

{
    WRITE_REGISTER_UCHAR(NvBase + NV2A_CRTC_REGISTER_INDEX, Index);
    return READ_REGISTER_UCHAR(NvBase + NV2A_CRTC_REGISTER_VALUE);
}

Referenced by XboxVideoInit().

XboxGetFramebufferSize()

static ULONG XboxGetFramebufferSize ( _In_ ULONG_PTR  Offset )

static

Definition at line 56 of file xboxvideo.c.

{
    memory_map_t * MemoryMap;
    INT Count, i;
 
    if (!MultibootInfoPtr)
        return 0;
 
    if (!(MultibootInfoPtr->flags & MB_INFO_FLAG_MEMORY_MAP))
        return 0;
 
    MemoryMap = (memory_map_t *)MultibootInfoPtr->mmap_addr;
 
    if (!MemoryMap ||
        MultibootInfoPtr->mmap_length == 0 ||
        MultibootInfoPtr->mmap_length % sizeof(memory_map_t) != 0)
    {
        return 0;
    }
 
    Count = MultibootInfoPtr->mmap_length / sizeof(memory_map_t);
    for (i = 0; i < Count; i++, MemoryMap++)
    {
        TRACE("i = %d, base_addr_low = 0x%p, MemoryMap->length_low = 0x%p\n", i, MemoryMap->base_addr_low, MemoryMap->length_low);
 
        /* Framebuffer address offset value is coming from the GPU within
         * memory mapped I/O address space, so we're comparing only low
         * 28 bits of the address within actual RAM address space */
        if (MemoryMap->base_addr_low == (Offset & 0x0FFFFFFF) && MemoryMap->base_addr_high == 0)
        {
            TRACE("Video memory found\n");
            return MemoryMap->length_low;
        }
    }
    ERR("Video memory not found!\n");
    return 0;
}

Referenced by XboxVideoInit().

XboxVideoClearScreen()

VOID XboxVideoClearScreen

(

UCHAR

Attr

)

Definition at line 37 of file xboxvideo.c.

{
    FbConsClearScreen(Attr);
}

Referenced by MachInit().

XboxVideoCopyOffScreenBufferToVRAM()

VOID XboxVideoCopyOffScreenBufferToVRAM

(

PVOID

Buffer

)

Definition at line 181 of file xboxvideo.c.

{
    FbConsCopyOffScreenBufferToVRAM(Buffer);
}

Referenced by MachInit().

XboxVideoGetBufferSize()

ULONG XboxVideoGetBufferSize

(

VOID

)

Definition at line 157 of file xboxvideo.c.

{
    return FbConsGetBufferSize();
}

Referenced by MachInit().

XboxVideoGetDisplaySize()

VOID XboxVideoGetDisplaySize	(	PULONG	Width,
		PULONG	Height,
		PULONG	Depth
	)

Definition at line 151 of file xboxvideo.c.

{
    FbConsGetDisplaySize(Width, Height, Depth);
}

Referenced by MachInit(), and XboxConsPutChar().

XboxVideoGetFontsFromFirmware()

VOID XboxVideoGetFontsFromFirmware

(

PULONG

RomFontPointers

)

Definition at line 163 of file xboxvideo.c.

{
    TRACE("XboxVideoGetFontsFromFirmware(): UNIMPLEMENTED\n");
}

Referenced by MachInit().

XboxVideoGetPaletteColor()

VOID XboxVideoGetPaletteColor	(	UCHAR	Color,
		UCHAR *	Red,
		UCHAR *	Green,
		UCHAR *	Blue
	)

Definition at line 199 of file xboxvideo.c.

{
    /* Not supported */
}

Referenced by MachInit().

XboxVideoHideShowTextCursor()

VOID XboxVideoHideShowTextCursor

(

BOOLEAN

Show

)

Definition at line 175 of file xboxvideo.c.

{
    /* We don't have a cursor yet */
}

Referenced by MachInit(), and XboxVideoPrepareForReactOS().

XboxVideoInit()

VOID XboxVideoInit

(

VOID

)

Definition at line 96 of file xboxvideo.c.

{
    ULONG ScreenWidth;
    ULONG ScreenHeight;
    ULONG BytesPerPixel;
 
    /* Reuse framebuffer that was set up by firmware */
    FrameBuffer = (ULONG_PTR)READ_REGISTER_ULONG(NvBase + NV2A_CRTC_FRAMEBUFFER_START);
    /* Verify that framebuffer address is page-aligned */
    ASSERT(FrameBuffer % PAGE_SIZE == 0);
 
    /* Obtain framebuffer memory size from multiboot memory map */
    if ((FrameBufferSize = XboxGetFramebufferSize(FrameBuffer)) == 0)
    {
        /* Fallback to Cromwell standard which reserves high 4 MB of RAM */
        FrameBufferSize = 4 * 1024 * 1024;
        WARN("Could not detect framebuffer memory size, fallback to 4 MB\n");
    }
 
    ScreenWidth = READ_REGISTER_ULONG(NvBase + NV2A_RAMDAC_FP_HVALID_END) + 1;
    ScreenHeight = READ_REGISTER_ULONG(NvBase + NV2A_RAMDAC_FP_VVALID_END) + 1;
 
    /* Get BPP directly from NV2A CRTC (magic constants are from Cromwell) */
    BytesPerPixel = 8 * (((NvGetCrtc(0x19) & 0xE0) << 3) | (NvGetCrtc(0x13) & 0xFF)) / ScreenWidth;
    if (BytesPerPixel == 4)
        ASSERT((NvGetCrtc(0x28) & 0xF) == BytesPerPixel - 1);
    else
        ASSERT((NvGetCrtc(0x28) & 0xF) == BytesPerPixel);
 
    /* Verify screen resolution */
    ASSERT(ScreenWidth > 1);
    ASSERT(ScreenHeight > 1);
    ASSERT(BytesPerPixel >= 1 && BytesPerPixel <= 4);
    /* Verify that screen fits framebuffer size */
    ASSERT(ScreenWidth * ScreenHeight * BytesPerPixel <= FrameBufferSize);
 
    VidFbInitializeVideo(FrameBuffer,
                         FrameBufferSize,
                         ScreenWidth,
                         ScreenHeight,
                         ScreenWidth, // PixelsPerScanLine
                         BytesPerPixel * 8,
                         NULL);
 
    VidFbClearScreenColor(MAKE_COLOR(0, 0, 0), TRUE);
}

Referenced by MachInit().

XboxVideoIsPaletteFixed()

BOOLEAN XboxVideoIsPaletteFixed

(

VOID

)

Definition at line 187 of file xboxvideo.c.

{
    return FALSE;
}

Referenced by MachInit().

XboxVideoPrepareForReactOS()

VOID XboxVideoPrepareForReactOS

(

VOID

)

Definition at line 211 of file xboxvideo.c.

{
    VidFbClearScreenColor(MAKE_COLOR(0, 0, 0), TRUE);
    XboxVideoHideShowTextCursor(FALSE);
}

Referenced by XboxPrepareForReactOS().

XboxVideoPutChar()

VOID XboxVideoPutChar	(	int	Ch,
		UCHAR	Attr,
		unsigned	X,
		unsigned	Y
	)

Definition at line 43 of file xboxvideo.c.

{
    FbConsPutChar(Ch, Attr, X, Y);
}

Referenced by MachInit(), and XboxConsPutChar().

XboxVideoSetDisplayMode()

VIDEODISPLAYMODE XboxVideoSetDisplayMode	(	PCSTR	DisplayMode,
		BOOLEAN	Init
	)

Definition at line 144 of file xboxvideo.c.

{
    /* We only have one mode, semi-text */
    return VideoTextMode;
}

Referenced by MachInit().

XboxVideoSetPaletteColor()

VOID XboxVideoSetPaletteColor	(	UCHAR	Color,
		UCHAR	Red,
		UCHAR	Green,
		UCHAR	Blue
	)

Definition at line 193 of file xboxvideo.c.

{
    /* Not supported */
}

Referenced by MachInit().

XboxVideoSetTextCursorPosition()

VOID XboxVideoSetTextCursorPosition	(	UCHAR	X,
		UCHAR	Y
	)

Definition at line 169 of file xboxvideo.c.

{
    /* We don't have a cursor yet */
}

Referenced by MachInit().

XboxVideoSync()

VOID XboxVideoSync

(

VOID

)

Definition at line 205 of file xboxvideo.c.

{
  /* Not supported */
}

Referenced by MachInit().

Variable Documentation

FrameBuffer

ULONG_PTR FrameBuffer

Definition at line 29 of file xboxvideo.c.

Referenced by XboxVideoInit().

FrameBufferSize

ULONG FrameBufferSize

Definition at line 30 of file xboxvideo.c.

Referenced by ConsoleEfiGopEnable(), DetectDisplayController(), EfiGopGetFrameBuffer(), VidInitialize(), XboxMemGetMemoryMap(), and XboxVideoInit().

MultibootInfoPtr

multiboot_info_t* MultibootInfoPtr

extern

Referenced by XboxGetFramebufferSize().

NvBase

ULONG NvBase = 0xFD000000

Definition at line 28 of file xboxvideo.c.

Referenced by NvGetCrtc(), XboxMemInit(), and XboxVideoInit().