2 * Copyright (c) 2009 Jared D. McNeill <jmcneill@invisible.ca>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
16 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
28 * Default mode for VESA frame buffer.
29 * This mode is selected when there is no EDID inormation and
30 * mode is not provided by user.
31 * To provide consistent look with UEFI GOP, we use 800x600 here,
32 * and if this mode is not available, we fall back to text mode and
36 #define VBE_DEFAULT_MODE "800x600"
41 uint32_t OemStringPtr;
42 uint32_t Capabilities;
43 #define VBE_CAP_DAC8 (1 << 0) /* Can switch DAC */
44 #define VBE_CAP_NONVGA (1 << 1) /* Controller is not VGA comp. */
45 #define VBE_CAP_SNOW (1 << 2) /* Set data during Vertical Reterace */
46 uint32_t VideoModePtr;
48 uint16_t OemSoftwareRev;
49 uint32_t OemVendorNamePtr, OemProductNamePtr, OemProductRevPtr;
50 /* data area, in total max 512 bytes for VBE 2.0 */
51 uint8_t Reserved[222];
55 struct modeinfoblock {
56 /* Mandatory information for all VBE revisions */
57 uint16_t ModeAttributes;
58 uint8_t WinAAttributes, WinBAttributes;
59 uint16_t WinGranularity, WinSize, WinASegment, WinBSegment;
61 uint16_t BytesPerScanLine;
62 /* Mandatory information for VBE 1.2 and above */
63 uint16_t XResolution, YResolution;
64 uint8_t XCharSize, YCharSize, NumberOfPlanes, BitsPerPixel;
65 uint8_t NumberOfBanks, MemoryModel, BankSize, NumberOfImagePages;
67 /* Direct Color fields
68 (required for direct/6 and YUV/7 memory models) */
69 uint8_t RedMaskSize, RedFieldPosition;
70 uint8_t GreenMaskSize, GreenFieldPosition;
71 uint8_t BlueMaskSize, BlueFieldPosition;
72 uint8_t RsvdMaskSize, RsvdFieldPosition;
73 uint8_t DirectColorModeInfo;
74 /* Mandatory information for VBE 2.0 and above */
76 uint32_t OffScreenMemOffset; /* reserved in VBE 3.0 and above */
77 uint16_t OffScreenMemSize; /* reserved in VBE 3.0 and above */
79 /* Mandatory information for VBE 3.0 and above */
80 uint16_t LinBytesPerScanLine;
81 uint8_t BnkNumberOfImagePages;
82 uint8_t LinNumberOfImagePages;
83 uint8_t LinRedMaskSize, LinRedFieldPosition;
84 uint8_t LinGreenMaskSize, LinGreenFieldPosition;
85 uint8_t LinBlueMaskSize, LinBlueFieldPosition;
86 uint8_t LinRsvdMaskSize, LinRsvdFieldPosition;
87 uint32_t MaxPixelClock;
88 /* + 1 will fix the size to 256 bytes */
89 uint8_t Reserved4[189 + 1];
92 struct crtciinfoblock {
93 uint16_t HorizontalTotal;
94 uint16_t HorizontalSyncStart;
95 uint16_t HorizontalSyncEnd;
96 uint16_t VerticalTotal;
97 uint16_t VerticalSyncStart;
98 uint16_t VerticalSyncEnd;
101 uint16_t RefreshRate;
102 uint8_t Reserved[40];
105 struct paletteentry {
114 uint16_t HorizontalSize;
115 uint16_t VerticalSize;
121 uint32_t ReservedOffScreenMemSize;
122 uint32_t ReservedOffScreenMemPtr;
124 uint8_t Reserved[14];
127 #define VBE_BASE_MODE (0x100) /* VBE 3.0 page 18 */
128 #define VBE_VALID_MODE(a) ((a) >= VBE_BASE_MODE)
129 #define VBE_ERROR(a) (((a) & 0xFF) != 0x4F || ((a) & 0xFF00) != 0)
130 #define VBE_SUCCESS (0x004F)
131 #define VBE_FAILED (0x014F)
132 #define VBE_NOTSUP (0x024F)
133 #define VBE_INVALID (0x034F)
135 #define VGA_TEXT_MODE (3) /* 80x25 text mode */
136 #define TEXT_ROWS (25) /* VGATEXT rows */
137 #define TEXT_COLS (80) /* VGATEXT columns */
139 extern struct paletteentry *pe8;
140 extern int palette_format;
142 int vga_get_reg(int, int);
143 int vga_get_atr(int, int);
144 void vga_set_atr(int, int, int);
145 void vga_set_indexed(int, int, int, uint8_t, uint8_t);
146 int vga_get_indexed(int, int, int, uint8_t);
147 int vga_get_crtc(int, int);
148 void vga_set_crtc(int, int, int);
149 int vga_get_seq(int, int);
150 void vga_set_seq(int, int, int);
151 int vga_get_grc(int, int);
152 void vga_set_grc(int, int, int);
154 /* high-level VBE helpers, from vbe.c */
155 bool vbe_is_vga(void);
156 void bios_set_text_mode(int);
157 int biosvbe_palette_format(int *);
159 bool vbe_available(void);
160 int vbe_default_mode(void);
161 int vbe_set_mode(int);
162 int vbe_get_mode(void);
163 int vbe_set_palette(const struct paletteentry *, size_t);
164 void vbe_modelist(int);