2 * Copyright (c) 2013 The FreeBSD Foundation
5 * This software was developed by Benno Rice under sponsorship from
6 * the FreeBSD Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
36 #include <machine/metadata.h>
38 static EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
41 efi_find_framebuffer(struct efi_fb *efifb)
43 EFI_GRAPHICS_OUTPUT *gop;
45 EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *mode;
46 EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info;
48 status = BS->LocateProtocol(&gop_guid, NULL, (VOID **)&gop);
49 if (EFI_ERROR(status))
53 info = gop->Mode->Info;
55 efifb->fb_addr = mode->FrameBufferBase;
56 efifb->fb_size = mode->FrameBufferSize;
57 efifb->fb_height = info->VerticalResolution;
58 efifb->fb_width = info->HorizontalResolution;
59 efifb->fb_stride = info->PixelsPerScanLine;
61 switch (info->PixelFormat) {
62 case PixelRedGreenBlueReserved8BitPerColor:
63 efifb->fb_mask_red = 0x000000ff;
64 efifb->fb_mask_green = 0x0000ff00;
65 efifb->fb_mask_blue = 0x00ff0000;
66 efifb->fb_mask_reserved = 0xff000000;
68 case PixelBlueGreenRedReserved8BitPerColor:
69 efifb->fb_mask_red = 0x00ff0000;
70 efifb->fb_mask_green = 0x0000ff00;
71 efifb->fb_mask_blue = 0x000000ff;
72 efifb->fb_mask_reserved = 0xff000000;
75 efifb->fb_mask_red = info->PixelInformation.RedMask;
76 efifb->fb_mask_green = info->PixelInformation.GreenMask;
77 efifb->fb_mask_blue = info->PixelInformation.BlueMask;
78 efifb->fb_mask_reserved =
79 info->PixelInformation.ReservedMask;