cfb_console.c

PPC Linux Driver, use makefile to compare the routen in Linux.

    console_col = 0;

    /* Check if we need to scroll the terminal */
    if (console_row >= CONSOLE_ROWS)
    {
    /* Scroll everything up */
    console_scrollup ();

    /* Decrement row number */
    console_row--;
    }
}

/*****************************************************************************/

void video_putc (const char c)
{
    switch (c)
    {
    case 13: /* ignore */
        break;

    case '\n': /* next line */
        console_newline();
        break;

    case 9:    /* tab 8 */
        CURSOR_OFF
        console_col |=  0x0008;
        console_col &= ~0x0007;

        if (console_col >= CONSOLE_COLS)
            console_newline();
        break;

    case 8:    /* backspace */
        console_back();
        break;

    default: /* draw the char */
        video_putchar (console_col * VIDEO_FONT_WIDTH,
                       console_row * VIDEO_FONT_HEIGHT, c);
        console_col++ ;

        /* check for newline */
        if (console_col >= CONSOLE_COLS)
            console_newline();
    }
    CURSOR_SET
}



/*****************************************************************************/

void video_puts (const char *s)
{
    int count = strlen(s);

    while(count--)
        video_putc(*s++);
}

/*****************************************************************************/

#ifdef CONFIG_VIDEO_LOGO
void logo_plot (void *screen, int width, int x, int y)
{
    int skip = (width - LINUX_LOGO_WIDTH) * VIDEO_PIXEL_SIZE,
        xcount, i,
        ycount = LINUX_LOGO_HEIGHT;
    unsigned char
        *source = linux_logo,
        *dest   = (unsigned char *) screen + ((y * width * VIDEO_PIXEL_SIZE) + x),
        r, g, b;

    if (VIDEO_DATA_FORMAT == GDF__8BIT_INDEX)
    {
        for (i = 0; i < LINUX_LOGO_COLORS; i++)
        {
            r = (unsigned char)linux_logo_red  [i];
            g = (unsigned char)linux_logo_green[i];
            b = (unsigned char)linux_logo_blue [i];
            video_set_lut (LINUX_LOGO_LUT_OFFSET + i, r, g, b);
        }
    }

    while (ycount--)
    {
    xcount = LINUX_LOGO_WIDTH;
    while (xcount--)
    {
        r = (unsigned char)linux_logo_red  [*source - LINUX_LOGO_LUT_OFFSET];
        g = (unsigned char)linux_logo_green[*source - LINUX_LOGO_LUT_OFFSET];
        b = (unsigned char)linux_logo_blue [*source - LINUX_LOGO_LUT_OFFSET];

        switch (VIDEO_DATA_FORMAT)
        {
        case GDF__8BIT_INDEX:
            *dest = *source;
            break;
        case GDF__8BIT_332RGB:
            *dest = ((r>>5)<<5) | ((g>>5)<<2) | (b>>6);
            break;
        case GDF_15BIT_555RGB:
            *(unsigned short *)dest =
            SWAP16((unsigned short)(((r>>3)<<10) | ((g>>3)<<5) | (b>>3)));
            break;
        case GDF_16BIT_565RGB:
            *(unsigned short *)dest =
            SWAP16((unsigned short)(((r>>3)<<11) | ((g>>2)<<5) | (b>>3)));
            break;
        case GDF_32BIT_X888RGB:
            *(unsigned long  *)dest =
            SWAP32((unsigned long)((r<<16) | (g<<8) | b));
            break;
        case GDF_24BIT_888RGB:
#ifdef VIDEO_FB_LITTLE_ENDIAN
            dest[0] = b;
            dest[1] = g;
            dest[2] = r;
#else
            dest[0] = r;
            dest[1] = g;
            dest[2] = b;
#endif
            break;
        }
        source++;
        dest += VIDEO_PIXEL_SIZE;
    }
    dest += skip;
    }
}


/*****************************************************************************/

static void *video_logo (void)
{
    char info[128];

    logo_plot (video_fb_address, VIDEO_COLS, 0, 0);

    sprintf(info, " %s (%s - %s)", PPCBOOT_VERSION, __DATE__, __TIME__);
    video_drawstring (VIDEO_INFO_X, VIDEO_INFO_Y, info);

#ifdef CONFIG_CONSOLE_EXTRA_INFO
    {
    int i, n = ((VIDEO_LOGO_HEIGHT-VIDEO_FONT_HEIGHT)/VIDEO_FONT_HEIGHT);

    for (i = 1; i < n; i++)
    {
        video_get_info_str (i, info);
        if (*info)
        video_drawstring (VIDEO_INFO_X,
                          VIDEO_INFO_Y + i*VIDEO_FONT_HEIGHT, info);
    }
    }
#endif

    return (video_fb_address + VIDEO_LOGO_HEIGHT * VIDEO_LINE_LEN);
}
#endif


/*****************************************************************************/

static int video_init(void)
{
    unsigned char color8;

    if ((pGD=video_hw_init()) == NULL)
        return -1;

    video_fb_address = (void*)VIDEO_FB_ADRS;
#ifdef CONFIG_VIDEO_HW_CURSOR
    video_init_hw_cursor(VIDEO_FONT_WIDTH, VIDEO_FONT_HEIGHT);
#endif

    /* Init drawing pats */
    switch (VIDEO_DATA_FORMAT)
    {
    case GDF__8BIT_INDEX:
        video_set_lut (0x01, CONSOLE_FG_COL, CONSOLE_FG_COL, CONSOLE_FG_COL);
        video_set_lut (0x00, CONSOLE_BG_COL, CONSOLE_BG_COL, CONSOLE_BG_COL);
        fgx = 0x01010101;
        bgx = 0x00000000;
        break;
    case GDF__8BIT_332RGB:
        color8 = ((CONSOLE_FG_COL & 0xe0) | ((CONSOLE_FG_COL>>3) & 0x1c) | CONSOLE_FG_COL>>6);
        fgx = (color8<<24) | (color8<<16) | (color8<<8) | color8;
        color8 = ((CONSOLE_BG_COL & 0xe0) | ((CONSOLE_BG_COL>>3) & 0x1c) | CONSOLE_BG_COL>>6);
        bgx = (color8<<24) | (color8<<16) | (color8<<8) | color8;
        break;
    case GDF_15BIT_555RGB:
        fgx = (((CONSOLE_FG_COL>>3)<<26) | ((CONSOLE_FG_COL>>3)<<21) | ((CONSOLE_FG_COL>>3)<<16) |
           ((CONSOLE_FG_COL>>3)<<10) | ((CONSOLE_FG_COL>>3)<<5)  |  (CONSOLE_FG_COL>>3));
        bgx = (((CONSOLE_BG_COL>>3)<<26) | ((CONSOLE_BG_COL>>3)<<21) | ((CONSOLE_BG_COL>>3)<<16) |
           ((CONSOLE_BG_COL>>3)<<10) | ((CONSOLE_BG_COL>>3)<<5)  |  (CONSOLE_BG_COL>>3));
        break;
    case GDF_16BIT_565RGB:
        fgx = (((CONSOLE_FG_COL>>3)<<27) | ((CONSOLE_FG_COL>>2)<<21) | ((CONSOLE_FG_COL>>3)<<16) |
           ((CONSOLE_FG_COL>>3)<<11) | ((CONSOLE_FG_COL>>2)<<5)  |  (CONSOLE_FG_COL>>3));
        bgx = (((CONSOLE_BG_COL>>3)<<27) | ((CONSOLE_BG_COL>>2)<<21) | ((CONSOLE_BG_COL>>3)<<16) |
           ((CONSOLE_BG_COL>>3)<<11) | ((CONSOLE_BG_COL>>2)<<5)  |  (CONSOLE_BG_COL>>3));
        break;
    case GDF_32BIT_X888RGB:
        fgx = (CONSOLE_FG_COL<<16) | (CONSOLE_FG_COL<<8) | CONSOLE_FG_COL;
        bgx = (CONSOLE_BG_COL<<16) | (CONSOLE_BG_COL<<8) | CONSOLE_BG_COL;
        break;
    case GDF_24BIT_888RGB:
        fgx = (CONSOLE_FG_COL<<24) | (CONSOLE_FG_COL<<16) | (CONSOLE_FG_COL<<8) | CONSOLE_FG_COL;
        bgx = (CONSOLE_BG_COL<<24) | (CONSOLE_BG_COL<<16) | (CONSOLE_BG_COL<<8) | CONSOLE_BG_COL;
        break;
    }
    eorx = fgx ^ bgx;

#ifdef CONFIG_VIDEO_LOGO
    /* Plot the logo and get start point of console */
    PRINTD("Video: Drawing the logo ...\n");
    video_console_address = video_logo();
#else
    video_console_address = video_fb_address;
#endif

    /* Initialize the console */
    console_col  = 0;
    console_row  = 0;

    return 0 ;
}


/*****************************************************************************/

int drv_video_init (void)
{
    int skip_dev_init;
    device_t console_dev;
    char *penv;

    skip_dev_init = 0;

     /* Force console i/o to serial ? */
    if ((penv = getenv ("console")) != NULL)
        if (strcmp (penv, "serial") == 0)
            return 0;

   /* Init video chip - returns with framebuffer cleared */
    if (video_init() == -1)
        skip_dev_init = 1;
#ifdef CONFIG_VGA_AS_SINGLE_DEVICE
   /* Devices VGA and Keyboard will be assigned seperately */
    /* Init vga device */
    if (!skip_dev_init)
    {
        memset (&console_dev, 0, sizeof(console_dev));
        strcpy(console_dev.name, "vga");
        console_dev.ext   = DEV_EXT_VIDEO;    /* Video extensions */
        console_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_SYSTEM;
        console_dev.putc  = video_putc;        /* 'putc' function */
        console_dev.puts  = video_puts;        /* 'puts' function */
        console_dev.tstc  = NULL;              /* 'tstc' function */
        console_dev.getc  = NULL;              /* 'getc' function */

        if (device_register (&console_dev) == 0)
            return 1;
    }
#else
    PRINTD("KBD: Keyboard init ...\n");
    if (VIDEO_KBD_INIT_FCT == -1)
        skip_dev_init = 1;

    /* Init console device */
    if (!skip_dev_init)
    {
        memset (&console_dev, 0, sizeof(console_dev));
        strcpy(console_dev.name, "console");
        console_dev.ext   = DEV_EXT_VIDEO;    /* Video extensions */
        console_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
        console_dev.putc  = video_putc;        /* 'putc' function */
        console_dev.puts  = video_puts;        /* 'puts' function */
        console_dev.tstc  = VIDEO_TSTC_FCT;    /* 'tstc' function */
        console_dev.getc  = VIDEO_GETC_FCT;    /* 'getc' function */

        if (device_register (&console_dev) == 0)
            return 1;
    }
#endif /* CONFIG_VGA_AS_SINGLE_DEVICE */
    /* No console dev available */
    return 0;
}

#endif /* CONFIG_CFB_CONSOLE */