arch/arm-native/ceboot/hardware.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <hardware/vbe.h>
   7 #include <runtime.h>
   8
   9 #include <stdio.h>
  10 #include <windows.h>
  11
  12 #include "bootstrap.h"
  13 #include "winapi.h"
  14
  15 #define D(x) x
  16
  17 /* FIXME: Masks/shifts are preliminary and not tested */
  18 static const char ModeTable[2][8] =
  19 {
  20     {5, 0, 6, 5, 5, 11, 0, 0},
  21     {5, 0, 5, 5, 5, 10, 0, 0}
  22 };
  23
  24 static int SetFormat(struct vbe_mode *info, unsigned char mode)
  25 {
  26     if ((mode > 0) && (mode < FORMAT_OTHER))
  27     {
  28         mode--;
  29
  30         memcpy(&info->red_mask_size, ModeTable[mode], 8);
  31         memcpy(&info->linear_red_mask_size, ModeTable[mode], 8);
  32
  33         return 0;
  34     }
  35     else
  36     {
  37         DisplayError("Unknown display format %d\n"
  38                      "Screen size %d x %d, BPP %d, BytesPerLine %d",
  39                      mode, info->x_resolution, info->y_resolution, info->bits_per_pixel, info->bytes_per_scanline);
  40
  41         return -1;
  42     }
  43 }
  44
  45 int GetFBInfo(struct vbe_mode *info)
  46 {
  47     HDC hdc;
  48     int ret;
  49     RawFrameBufferInfo fb;
  50     GXDeviceInfo dev;
  51
  52     D(fprintf(stderr, "[Video] Getting framebuffer information...\n"));
  53
  54     hdc = GetDC(NULL);
  55     ret = ExtEscape(hdc, GETRAWFRAMEBUFFER, 0, NULL, sizeof(fb), (char *)&fb);
  56     if (ret > 0)
  57     {
  58         ReleaseDC(NULL, hdc);
  59
  60         D(fprintf(stderr, "[Video] GETRAWFRAMEBUFFER worked, addr %p, size %d x %d\n",
  61                   fb.pFramePointer, fb.cxPixels, fb.cyPixels));
  62         D(fprintf(stderr, "[Video] Format %d, BPP %d, BytesPerPixel %d, BytesPerLine %d\n",
  63                   fb.wFormat, fb.wBPP, fb.cxStride, fb.cyStride));
  64
  65         info->bytes_per_scanline        = fb.cyStride;
  66         info->x_resolution              = fb.cxPixels;
  67         info->y_resolution              = fb.cyPixels;
  68         info->bits_per_pixel            = fb.wBPP;
  69         info->phys_base                 = (unsigned int)fb.pFramePointer; /* FIXME: Convert to physical! */
  70         info->linear_bytes_per_scanline = fb.cyStride;
  71
  72         return SetFormat(info, fb.wFormat);
  73     }
  74
  75     /*
  76      * HaRET also tries GAPI at this point. However:
  77      * 1. Some documentation says that GAPI is deprecated
  78      * 2. I don't want to bother with runtime linking, current code works quite fine.
  79      */
  80
  81     dev.Version = 100;
  82     ret = ExtEscape(hdc, GETGXINFO, 0, NULL, sizeof(dev), (char *)&dev);
  83     ReleaseDC(NULL, hdc);
  84     if (ret > 0)
  85     {
  86         D(fprintf(stderr, "[Video] GETGXINFO worked, addr %p, size %ld x %ld\n",
  87                   dev.pvFrameBuffer, dev.cxWidth, dev.cyHeight));
  88         D(fprintf(stderr, "[Video] Format %ld, BPP %ld, BytesPerLine %ld\n",
  89                   dev.ffFormat, dev.cBPP, dev.cbStride));
  90
  91         info->bytes_per_scanline        = dev.cbStride;
  92         info->x_resolution              = dev.cxWidth;
  93         info->y_resolution              = dev.cyHeight;
  94         info->bits_per_pixel            = dev.cBPP;
  95         info->phys_base                 = (unsigned int)dev.pvFrameBuffer; /* FIXME: Convert to physical! */
  96         info->linear_bytes_per_scanline = dev.cbStride;
  97
  98         return SetFormat(info, dev.ffFormat);
  99     }
 100
 101     DisplayError("Failed to get framebuffer information");
 102     return -1;
 103 }