1 /*- 2 * Copyright (c) 2009 Jared D. McNeill <jmcneill@invisible.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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. 25 */ 26 27 /* 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 33 * VESA disabled. 34 */ 35 36 #define VBE_DEFAULT_MODE "800x600" 37 38 struct vbeinfoblock { 39 char VbeSignature[4]; 40 uint16_t VbeVersion; 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; 47 uint16_t TotalMemory; 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]; 52 uint8_t OemData[256]; 53 } __packed; 54 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; 60 uint32_t WinFuncPtr; 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; 66 uint8_t Reserved1; 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 */ 75 uint32_t PhysBasePtr; 76 uint32_t OffScreenMemOffset; /* reserved in VBE 3.0 and above */ 77 uint16_t OffScreenMemSize; /* reserved in VBE 3.0 and above */ 78 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]; 90 } __packed; 91 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; 99 uint8_t Flags; 100 uint32_t PixelClock; 101 uint16_t RefreshRate; 102 uint8_t Reserved[40]; 103 } __packed; 104 105 struct paletteentry { 106 uint8_t Blue; 107 uint8_t Green; 108 uint8_t Red; 109 uint8_t Reserved; 110 } __packed; 111 112 struct flatpanelinfo 113 { 114 uint16_t HorizontalSize; 115 uint16_t VerticalSize; 116 uint16_t PanelType; 117 uint8_t RedBPP; 118 uint8_t GreenBPP; 119 uint8_t BlueBPP; 120 uint8_t ReservedBPP; 121 uint32_t ReservedOffScreenMemSize; 122 uint32_t ReservedOffScreenMemPtr; 123 124 uint8_t Reserved[14]; 125 } __packed; 126 127 #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) 134 135 #define VGA_TEXT_MODE (3) /* 80x25 text mode */ 136 #define TEXT_ROWS (25) /* VGATEXT rows */ 137 #define TEXT_COLS (80) /* VGATEXT columns */ 138 139 extern struct paletteentry *pe8; 140 extern int palette_format; 141 142 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); 153 154 /* 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 *); 158 void vbe_init(void); 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); 165