arch/arm-native/ceboot/hardware.c

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