sys/arch/hpc/stand/hpcboot/framebuffer.cpp

   1 /* -*-C++-*-    $NetBSD: framebuffer.cpp,v 1.11 2006/03/05 04:05:39 uwe Exp $   */
   2
   3 /*-
   4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <hpcmenu.h>
  33 #include <machine/bootinfo.h>
  34 #include <machine/platid.h>
  35 #include <machine/platid_mask.h>
  36
  37 #include <framebuffer.h>
  38
  39 //
  40 // framebuffer configuration table can be found in machine_config.cpp
  41 //
  42
  43 FrameBufferInfo::FrameBufferInfo(uint32_t cpu, uint32_t machine)
  44 {
  45         struct framebuffer_info *tab = _table;
  46         platid_mask_t target, entry;
  47         framebuffer_info *alt = 0;
  48
  49         // get current bpp.
  50         HDC hdc = GetDC(0);
  51         int bpp = GetDeviceCaps(hdc, BITSPIXEL);
  52         ReleaseDC(0, hdc);
  53
  54         target.dw.dw0 = cpu;
  55         target.dw.dw1 = machine;
  56         // search apriori setting if any.
  57         for (; tab->cpu; tab++) {
  58                 entry.dw.dw0 = tab->cpu;
  59                 entry.dw.dw1 = tab->machine;
  60                 if (platid_match(&target, &entry)) {
  61                         if (tab->bpp == bpp) {
  62                                 _fb = tab;
  63                                 return;
  64                         } else {
  65                                 alt = tab;
  66                         }
  67                 }
  68         }
  69
  70         // use alternative framebuffer setting, if any.
  71         if (alt) {
  72                 _fb = alt;
  73                 return;
  74         }
  75
  76         // no apriori setting. fill default.
  77         memset(&_default, 0, sizeof(struct framebuffer_info));
  78
  79         _default.cpu = cpu;
  80         _default.machine = machine;
  81         hdc = GetDC(0);
  82         _default.bpp = bpp;
  83         _default.width = GetDeviceCaps(hdc, HORZRES);
  84         _default.height = GetDeviceCaps(hdc, VERTRES);
  85         ReleaseDC(0, hdc);
  86         _fb = &_default;
  87 }
  88
  89 FrameBufferInfo::~FrameBufferInfo()
  90 {
  91         /* NO-OP */
  92 }
  93
  94 int
  95 FrameBufferInfo::type()
  96 {
  97         BOOL reverse = HPC_PREFERENCE.reverse_video;
  98         int type;
  99
 100         switch(_fb->bpp) {
 101         default:
 102                 // FALLTHROUGH
 103         case 2:
 104                 type = reverse ? BIFB_D2_M2L_3 : BIFB_D2_M2L_0;
 105                 break;
 106         case 4:
 107                 type = reverse ? BIFB_D4_M2L_F : BIFB_D4_M2L_0;
 108                 break;
 109         case 8:
 110                 type = reverse ? BIFB_D8_FF : BIFB_D8_00;
 111                 break;
 112         case 16:
 113                 type = reverse ? BIFB_D16_FFFF : BIFB_D16_0000;
 114                 break;
 115         }
 116
 117         return type;
 118 }