boot/freeldr/freeldr/video/video.c

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19 #ifndef _M_ARM
  20 #include <freeldr.h>
  21
  22 PVOID   VideoOffScreenBuffer = NULL;
  23
  24 PVOID VideoAllocateOffScreenBuffer(VOID)
  25 {
  26         ULONG           BufferSize;
  27
  28         if (VideoOffScreenBuffer != NULL)
  29         {
  30                 MmFreeMemory(VideoOffScreenBuffer);
  31                 VideoOffScreenBuffer = NULL;
  32         }
  33
  34         BufferSize = MachVideoGetBufferSize();
  35
  36         VideoOffScreenBuffer = MmAllocateMemory(BufferSize);
  37
  38         return VideoOffScreenBuffer;
  39 }
  40
  41 VOID VideoCopyOffScreenBufferToVRAM(VOID)
  42 {
  43         MachVideoCopyOffScreenBufferToVRAM(VideoOffScreenBuffer);
  44 }
  45 #endif