default=0
timeout=30
   title=MyOS : free and Open Source OS
   kernel /kernel.bin -disk 0 -part 0 -init C:/sys/bin/shell -b
   vbeset 771
   boot

static int lfb_px = 0;

static int lfb_py = 0;



static ULONG lfb_width  = 0;

static ULONG lfb_height = 0;

static ULONG lfb_depth  = 0;

static ULONG lfb_type    = 0;



void lfb_clear()

{

   memset((char*)lfb,15,lfb_width*lfb_height*lfb_depth);

}




void init_lfb(struct multiboot_info *multiboot )

{

   struct vbe_mode *mode_info;

   void *lfb_ptr;



   lfb_px = 0;

   lfb_py = 0;



   if ( (multiboot->flags & (1<<11)) == 0 )

   {

       lfb_width  = 0;

       lfb_height = 0;

       lfb_depth = 0;

       lfb_type = 0;

       lfb_ptr = 0;

      printk("\n Video mode : VGA 12h\n");

   }

   else

   {

      setVideoMode(MODEVBE);

       mode_info = (struct vbe_mode*) multiboot->vbe_mode_info;

       lfb_width  = mode_info->x_resolution;

       lfb_height = mode_info->y_resolution;

       lfb_depth = mode_info->bits_per_pixel;

       lfb_type = 0;

       lfb_ptr = (void*)mode_info->phys_base;

      lfb = (unsigned char*)lfb_ptr;

      printk("\n Video mode : VESA grub\n");

   }

   

//   set_lfb( lfb_width, lfb_height, lfb_depth, lfb_type, lfb_ptr );

}



#define PIXEL_POINTEUR(x,y) ((char*)(lfb+x \

+((unsigned short int)y*(unsigned short int)lfb_width)))



void putpixel_vbe(ULONG x, ULONG y, ULONG col) {

   *PIXEL_POINTEUR(x,y)=(char)col;

}

/* VBE mode information.  */

struct vbe_mode

{

  unsigned short mode_attributes;

  unsigned char win_a_attributes;

  unsigned char win_b_attributes;

  unsigned short win_granularity;

  unsigned short win_size;

  unsigned short win_a_segment;

  unsigned short win_b_segment;

  unsigned long win_func;

  unsigned short bytes_per_scanline;



  /* >=1.2 */

  unsigned short x_resolution;

  unsigned short y_resolution;

  unsigned char x_char_size;

  unsigned char y_char_size;

  unsigned char number_of_planes;

  unsigned char bits_per_pixel;

  unsigned char number_of_banks;

  unsigned char memory_model;

  unsigned char bank_size;

  unsigned char number_of_image_pages;

  unsigned char reserved0;



  /* direct color */

  unsigned char red_mask_size;

  unsigned char red_field_position;

  unsigned char green_mask_size;

  unsigned char green_field_position;

  unsigned char blue_mask_size;

  unsigned char blue_field_position;

  unsigned char reserved_mask_size;

  unsigned char reserved_field_position;

  unsigned char direct_color_mode_info;



  /* >=2.0 */

  unsigned long phys_base;

  unsigned long reserved1;

  unsigned short reversed2;



  /* >=3.0 */

  unsigned short linear_bytes_per_scanline;

  unsigned char banked_number_of_image_pages;

  unsigned char linear_number_of_image_pages;

  unsigned char linear_red_mask_size;

  unsigned char linear_red_field_position;

  unsigned char linear_green_mask_size;

  unsigned char linear_green_field_position;

  unsigned char linear_blue_mask_size;

  unsigned char linear_blue_field_position;

  unsigned char linear_reserved_mask_size;

  unsigned char linear_reserved_field_position;

  unsigned long max_pixel_clock;



  unsigned char reserved3[189];

} __attribute__ ((packed));