l4/pkg/fb-drv/server/src/dummy.cc

   1 /*
   2  * (c) 2010 Technische Universität Dresden
   3  * This file is part of TUD:OS and distributed under the terms of the
   4  * GNU General Public License 2.
   5  * Please see the COPYING-GPL-2 file for details.
   6  */
   7
   8 #include <sys/mman.h>
   9 #include <cstdio>
  10 #include <getopt.h>
  11 #include <cstdlib>
  12
  13 #include "fb.h"
  14
  15 bool
  16 Dummy_fb::setup_drv(Prog_args *pa)
  17 {
  18   if (!pa->do_dummy)
  19     return false;
  20
  21   _screen_info.width      = 1024;
  22   _screen_info.height     = 768;
  23   _screen_info.flags      = L4Re::Video::Goos::F_auto_refresh;
  24   _screen_info.pixel_info = L4Re::Video::Pixel_info(2, 5, 11, 6, 5, 5, 0);
  25
  26   _vidmem_size = _screen_info.width * _screen_info.height
  27                  * _screen_info.pixel_info.bytes_per_pixel();
  28   _vidmem_size = l4_round_page(_vidmem_size);
  29
  30   void *v = mmap(0, _vidmem_size, PROT_WRITE,
  31                  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  32
  33   if (v == MAP_FAILED)
  34     return false;
  35
  36   _vidmem_start = (unsigned long)v;
  37   _vidmem_end   = _vidmem_start + _vidmem_size;
  38
  39   _view_info.buffer_offset = 0;
  40   _view_info.bytes_per_line
  41      = _screen_info.width * _screen_info.pixel_info.bytes_per_pixel();
  42
  43   init_infos();
  44
  45   return true;
  46 }