/**
* @file vbe3.h
*
* @ingroup i386_pc386
*
* @brief VESA Bios Extension definitions.
*/
/*
* vbe3.h - This file contains definitions for constants related to VBE.
* More information can be found at
*
* VESA public standards may be found at
*
*
* Copyright (C) 2014 Jan Doležal (dolezj21@fel.cvut.cz)
* CTU in Prague.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef _VBE_H
#define _VBE_H
#ifndef ASM /* ASM */
#include
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include
/* VESA BIOS EXTENSION (VBE) Core functions Standard
Version: 3.0 Date: September 16, 1998 */
/* VBE RETURN STATUS */
/* AL == 4Fh: Function is supported */
/* AL != 4Fh: Function is not supported */
#define VBE_functionSupported 0x4F
/* AH == 00h: Function call successful */
#define VBE_callSuccessful 0x00
/* AH == 01h: Function call failed */
#define VBE_callFailed 0x01
/* AH == 02h: Function is not supported in the current hardware configuration */
#define VBE_notSupportedInCurHWConf 0x02
/* AH == 03h: Function call invalid in current video mode */
#define VBE_callInvalid 0x03
/* VBE Mode Numbers */
/* D0-D8 = Mode number */
#define VBE_modeNumberMask 0x01FF
#define VBE_modeNumberShift 0x00
/* If D8 == 0, this is not a VESA defined VBE mode */
#define VBE_VESAmodeMask 0x0100
/* If D8 == 1, this is a VESA defined VBE mode */
/* D9-D12 = Reserved by VESA for future expansion (= 0) */
#define VBE_VESAmodeShift 0x08
/* If D11 == 0, Use current BIOS default refresh rate */
#define VBE_refreshRateCtrlMask 0x0800
/* If D11 == 1, Use user specified CRTC values for refresh rate */
/* D12-13 = Reserved for VBE/AF (must be 0) */
#define VBE_refreshRateCtrlShift 0x0B
/* If D14 == 0, Use Banked/Windowed Frame Buffer */
#define VBE_linearFlatFrameBufMask 0x4000
/* If D14 == 1, Use Linear/Flat Frame Buffer */
#define VBE_linearFlatFrameBufShift 0x0E
/* If D15 == 0, Clear display memory */
#define VBE_preserveDispMemMask 0x8000
/* If D15 == 1, Preserve display memory */
#define VBE_preserveDispMemShift 0x0F
/* Graphics modes */
/* 15-bit mode, Resolution: 640x400, Colors: 256 */
#define VBE_R640x400C256 0x100
/* 15-bit mode, Resolution: 640x480, Colors: 256 */
#define VBE_R640x480C256 0x101
/* 15-bit mode, Resolution: 800x600, Colors: 16 */
#define VBE_R800x600C16 0x102
/* 7-bit mode, Resolution: 800x600, Colors: 16 */
#define VBE_b7R800x600C16 0x6A
/* 15-bit mode, Resolution: 800x600, Colors: 256 */
#define VBE_R800x600C256 0x103
/* 15-bit mode, Resolution: 1024x768, Colors: 16 */
#define VBE_R1024x768C16 0x104
/* 15-bit mode, Resolution: 1024x768, Colors: 256 */
#define VBE_R1024x768C256 0x105
/* 15-bit mode, Resolution: 1280x1024, Colors: 16 */
#define VBE_R1280x1024C16 0x106
/* 15-bit mode, Resolution: 1280x1024, Colors: 256 */
#define VBE_R1280x1024C256 0x107
/* 15-bit mode, Resolution: 320x200, Colors: 32K (1:5:5:5) */
#define VBE_R320x200C32K 0x10D
/* 15-bit mode, Resolution: 320x200, Colors: 64K (5:6:5) */
#define VBE_R320x200C64K 0x10E
/* 15-bit mode, Resolution: 320x200, Colors: 16.8M (8:8:8) */
#define VBE_R320x200C17M 0x10F
/* 15-bit mode, Resolution: 640x480, Colors: 32K (1:5:5:5) */
#define VBE_R640x480C32K 0x110
/* 15-bit mode, Resolution: 640x480, Colors: 64K (5:6:5) */
#define VBE_R640x480C64K 0x111
/* 15-bit mode, Resolution: 640x480, Colors: 16.8M (8:8:8) */
#define VBE_R640x480C17M 0x112
/* 15-bit mode, Resolution: 800x600, Colors: 32K (1:5:5:5) */
#define VBE_R800x600C32K 0x113
/* 15-bit mode, Resolution: 800x600, Colors: 64K (5:6:5) */
#define VBE_R800x600C64K 0x114
/* 15-bit mode, Resolution: 800x600, Colors: 16.8M (8:8:8) */
#define VBE_R800x600C17M 0x115
/* 15-bit mode, Resolution: 1024x768, Colors: 32K (1:5:5:5) */
#define VBE_R1024x768C32K 0x116
/* 15-bit mode, Resolution: 1024x768, Colors: 64K (5:6:5) */
#define VBE_R1024x768C64K 0x117
/* 15-bit mode, Resolution: 1024x768, Colors: 16.8M (8:8:8) */
#define VBE_R1024x768C17M 0x118
/* 15-bit mode, Resolution: 1280x1024, Colors: 32K (1:5:5:5) */
#define VBE_R1280x1024C32K 0x119
/* 15-bit mode, Resolution: 1280x1024, Colors: 64K (5:6:5) */
#define VBE_R1280x1024C64K 0x11A
/* 15-bit mode, Resolution: 1280x1024, Colors: 16.8M (8:8:8) */
#define VBE_R1280x1024C17M 0x11B
#define VBE_SpecialMode 0x81FF
/* Text modes */
#define VBE_C80R60 0x108 /* 15-bit mode, Columns: 80, Rows: 60 */
#define VBE_C132R25 0x109 /* 15-bit mode, Columns: 132, Rows: 25 */
#define VBE_C132R43 0x10A /* 15-bit mode, Columns: 132, Rows: 43 */
#define VBE_C132R50 0x10B /* 15-bit mode, Columns: 132, Rows: 50 */
#define VBE_C132R60 0x10C /* 15-bit mode, Columns: 132, Rows: 60 */
/* VBE function numbers - passed in AX register */
#define VBE_RetVBEConInf 0x4F00 /* Return VBE Controller Information */
#define VBE_RetVBEModInf 0x4F01 /* Return VBE Mode Information */
#define VBE_SetVBEMod 0x4F02 /* Set VBE Mode */
#define VBE_RetCurVBEMod 0x4F03 /* Return Current VBE Mode */
#define VBE_SavResSta 0x4F04 /* Save/Restore State */
#define VBE_DisWinCon 0x4F05 /* Display Window Control */
#define VBE_SetGetLogScaLinLen 0x4F06 /* Set/Get Logical Scan Line Length */
#define VBE_SetGetDisSta 0x4F07 /* Set/Get Display Start */
#define VBE_SetGetDACPalFor 0x4F08 /* Set/Get DAC Palette Format */
#define VBE_SetGetPalDat 0x4F09 /* Set/Get Palette Data */
#define VBE_RetVBEProModInt 0x4F0A /* Return VBE Protected Mode Interface */
#define VBE_GetSetpixclo 0x4F0B /* Get/Set pixel clock */
#define VBE_PowManExt 0x4F10 /* Power Management Extensions (PM) */
#define VBE_FlaPanIntExt 0x4F11 /* Flat Panel Interface Extensions (FP) */
#define VBE_AudIntExt 0x4F13 /* Audio Interface Extensions (AI) */
#define VBE_OEMExt 0x4F14 /* OEM Extensions */
#define VBE_DisDatCha 0x4F15 /* Display Data Channel (DDC),
Serial Control Interface (SCI) */
/* VBE subfunction numbers - passed in BL register */
#define VBE_RetVBESupSpeInf 0x00 /* Return VBE Supplemental
Specification Information */
/* *** Structures *** */
typedef struct {
uint16_t offset;
uint16_t selector;
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_far_pointer;
typedef struct {
uint8_t Signature[4]; /* PM Info Block Signature */
uint16_t EntryPoint; /* Offset of PM entry point within BIOS */
uint16_t PMInitialize; /* Offset of PM initialization entry point */
uint16_t BIOSDataSel; /* Selector to BIOS data area emulation block */
uint16_t A0000Sel; /* Selector to access A0000h physical mem */
uint16_t B0000Sel; /* Selector to access B0000h physical mem */
uint16_t B8000Sel; /* Selector to access B8000h physical mem */
uint16_t CodeSegSel; /* Selector to access code segment as data */
uint8_t InProtectMode; /* Set to 1 when in protected mode */
uint8_t Checksum; /* Checksum byte for structure */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_protected_mode_info_block;
/* General VBE signature */
#define VBE_SIGNATURE "VESA"
/* Signature for VBE 2.0 and higher */
#define VBE20plus_SIGNATURE "VBE2"
/* for STUB see VBE CORE FUNCTIONS VERSION 3.0 - Appendix 1 */
#define VBE_END_OF_VideoModeList 0xFFFF
#define VBE_STUB_VideoModeList 0xFFFF
typedef struct {
uint8_t VbeSignature[4]; /* VBE Signature */
uint16_t VbeVersion; /* VBE Version */
uint8_t *OemStringPtr; /* VbeFarPtr to OEM String */
uint8_t Capabilities[4]; /* Capabilities of graphics controller */
uint32_t *VideoModePtr; /* VbeFarPtr to VideoModeList */
uint16_t TotalMemory; /* Number of 64kb memory blocks */
/* Added for VBE 2.0+ */
uint16_t OemSoftwareRev; /* VBE implementation Software revision */
uint8_t *OemVendorNamePtr; /* VbeFarPtr to Vendor Name String */
uint8_t *OemProductNamePtr; /* VbeFarPtr to Product Name String */
uint8_t *OemProductRevPtr; /* VbeFarPtr to Product Revision String */
uint8_t Reserved[222]; /* Reserved for VBE implementation scratch */
/* area */
uint8_t OemData[256]; /* Data Area for OEM Strings */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_vbe_info_block;
typedef struct {
/* Mandatory information for all VBE revisions */
uint16_t ModeAttributes; /* mode attributes */
uint8_t WinAAttributes; /* window A attributes */
uint8_t WinBAttributes; /* window B attributes */
uint16_t WinGranularity; /* window granularity */
uint16_t WinSize; /* window size */
uint16_t WinASegment; /* window A start segment */
uint16_t WinBSegment; /* window B start segment */
uint32_t *WinFuncPtr; /* real mode pointer to window function */
uint16_t BytesPerScanLine; /* bytes per scan line */
/* Mandatory information for VBE 1.2 and above */
uint16_t XResolution; /* horizontal resolution in px or chars */
uint16_t YResolution; /* vertical resolution in px or chars */
uint8_t XCharSize; /* character cell width in pixels */
uint8_t YCharSize; /* character cell height in pixels */
uint8_t NumberOfPlanes; /* number of memory planes */
uint8_t BitsPerPixel; /* bits per pixel */
uint8_t NumberOfBanks; /* number of banks */
uint8_t MemoryModel; /* memory model type */
uint8_t BankSize; /* bank size in KB */
uint8_t NumberOfImagePages; /* number of images */
uint8_t Reserved0; /* reserved for page function */
/* Direct Color fields (required for direct/6 and YUV/7 memory models) */
uint8_t RedMaskSize; /* size of direct color red mask in bits */
uint8_t RedFieldPosition; /* bit position of lsb of red mask */
uint8_t GreenMaskSize; /* size of direct color green mask in b */
uint8_t GreenFieldPosition; /* bit position of lsb of green mask */
uint8_t BlueMaskSize; /* size of direct color blue mask in b */
uint8_t BlueFieldPosition; /* bit position of lsb of blue mask */
uint8_t RsvdMaskSize; /* size of direct color reserved mask */
uint8_t RsvdFieldPosition; /* bit position of lsb of reserved mask */
uint8_t DirectColorModeInfo; /* direct color mode attributes */
/* Mandatory information for VBE 2.0 and above */
uint32_t *PhysBasePtr; /* physical address for
flat memory frame buffer */
uint32_t Reserved1; /* Reserved - always set to 0 */
uint16_t Reserved2; /* Reserved - always set to 0 */
/* Mandatory information for VBE 3.0 and above */
uint16_t LinBytesPerScanLine; /* bytes per scan line for linear modes */
uint8_t BnkNumberOfImagePages; /* number of images for banked modes */
uint8_t LinNumberOfImagePages; /* number of images for linear modes */
/* linear modes */
uint8_t LinRedMaskSize; /* size of direct color red mask */
uint8_t LinRedFieldPosition; /* bit position of lsb of red mask */
uint8_t LinGreenMaskSize; /* size of direct color green mask */
uint8_t LinGreenFieldPosition; /* bit position of lsb of green mask */
uint8_t LinBlueMaskSize; /* size of direct color blue mask */
uint8_t LinBlueFieldPosition; /* bit position of lsb of blue mask */
uint8_t LinRsvdMaskSize; /* size of direct color reserved mask */
uint8_t LinRsvdFieldPosition; /* bit position of lsb of reserved mask */
uint32_t MaxPixelClock; /* maximum pixel clock
(in Hz) for graphics mode */
uint8_t Reserved3[189]; /* remainder of ModeInfoBlock */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_mode_info_block;
typedef struct {
uint16_t HorizontalTotal; /* Horizontal total in pixels */
uint16_t HorizontalSyncStart; /* Horizontal sync start in pixels */
uint16_t HorizontalSyncEnd; /* Horizontal sync end in pixels */
uint16_t VerticalTotal; /* Vertical total in lines */
uint16_t VerticalSyncStart; /* Vertical sync start in lines */
uint16_t VerticalSyncEnd; /* Vertical sync end in lines */
uint8_t Flags; /* Flags (Interlaced, Double Scan etc) */
uint32_t PixelClock; /* Pixel clock in units of Hz */
uint16_t RefreshRate; /* Refresh rate in units of 0.01 Hz */
uint8_t Reserved[40]; /* remainder of ModeInfoBlock */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_CRTC_info_block;
typedef struct {
uint8_t Blue; /* Blue channel value (6 or 8 bits) */
uint8_t Green; /* Green channel value (6 or 8 bits) */
uint8_t Red; /* Red channel value(6 or 8 bits) */
uint8_t Alignment; /* DWORD alignment byte (unused) */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_palette_entry;
typedef struct {
uint8_t SupVbeSignature[7]; /* Supplemental VBE Signature */
uint16_t SupVbeVersion; /* Supplemental VBE Version */
uint8_t SupVbeSubFunc[8]; /* Bitfield of supported subfunctions */
uint16_t OemSoftwareRev; /* OEM Software revision */
uint8_t *OemVendorNamePtr; /* VbeFarPtr to Vendor Name String */
uint8_t *OemProductNamePtr; /* VbeFarPtr to Product Name String */
uint8_t *OemProductRevPtr; /* VbeFarPtr to Product Revision String */
uint8_t *OemStringPtr; /* VbeFarPtr to OEM String */
uint8_t Reserved[221]; /* Reserved for description
strings and future */
/* expansion */
} RTEMS_COMPILER_PACKED_ATTRIBUTE VBE_supplemental_vbe_info_block;
/* VbeInfoBlock Capabilities */
/* D0 = 0 DAC is fixed width, with 6 bits per primary color */
/* = 1 DAC width is switchable to 8 bits per primary color */
#define VBE_DACswitchableMask 0x0001
/* D1 = 0 Controller is VGA compatible */
/* = 1 Controller is not VGA compatible */
#define VBE_notVGAcompatibleMask 0x0002
/* D2 = 0 Normal RAMDAC operation */
/* = 1 When programming large blocks of information to the RAMDAC,
use the blank bit in Function 09h. */
#define VBE_specialRAMDACopMask 0x0004
/* D3 = 0 No hardware stereoscopic signaling support */
/* = 1 Hardware stereoscopic signaling supported by controller */
#define VBE_hwStereoscopicMask 0x0008
/* D4 = 0 Stereo signaling supported via external VESA stereo connector */
/* = 1 Stereo signaling supported via VESA EVC connector */
#define VBE_supportEVCconnMask 0x0010
/* D5-31 = Reserved */
/* ModeInfoBlock ModeAttributes */
/* D0 = Mode supported by hardware configuration */
/* 0 = Mode not supported in hardware */
/* 1 = Mode supported in hardware */
#define VBE_modSupInHWMask 0x0001
/* D1 = 1 (Reserved) */
/* D2 = TTY Output functions supported by BIOS */
/* 0 = TTY Output functions not supported by BIOS */
/* 1 = TTY Output functions supported by BIOS */
#define VBE_TTYOutSupByBIOSMask 0x0004
/* D3 = Monochrome/color mode (see note below) */
/* 0 = Monochrome mode */
/* 1 = Color mode */
#define VBE_ColorModeMask 0x0008
/* D4 = Mode type */
/* 0 = Text mode */
/* 1 = Graphics mode */
#define VBE_GraphicsModeMask 0x0010
/* D5 = VGA compatible mode */
/* 0 = Yes */
/* 1 = No */
#define VBE_VGACompModeMask 0x0020
/* D6 = VGA compatible windowed memory mode is available */
/* 0 = Yes */
/* 1 = No */
#define VBE_VGACompWinMemModeMask 0x0040
/* D7 = Linear frame buffer mode is available */
/* 0 = No */
/* 1 = Yes */
#define VBE_LinFraBufModeAvaiMask 0x0080
/* D8 = Double scan mode is available */
/* 0 = No */
/* 1 = Yes */
#define VBE_DblScnModeAvaiMask 0x0100
/* D9 = Interlaced mode is available */
/* 0 = No */
/* 1 = Yes */
#define VBE_InterlModeAvaiMask 0x0200
/* D10 = Hardware triple buffering support */
/* 0 = No */
/* 1 = Yes */
#define VBE_HWTripBufSupMask 0x0400
/* D11 = Hardware stereoscopic display support */
/* 0 = No */
/* 1 = Yes */
#define VBE_HWSterDispSupMask 0x0800
/* D12 = Dual display start address support */
/* 0 = No */
/* 1 = Yes */
#define VBE_DualDispStAdrSupMask 0x1000
/* D13-D15 = Reserved */
/* ModeInfoBlock WinXAttributes */
/* D0 = Relocatable window(s) supported */
/* 0 = Single non-relocatable window only */
/* 1 = Relocatable window(s) are supported */
#define VBE_RelocWinSupMask 0x01
/* D1 = Window readable */
/* 0 = Window is not readable */
/* 1 = Window is readable */
#define VBE_WinReadableMask 0x02
/* D2 = Window writeable */
/* 0 = Window is not writeable */
/* 1 = Window is writeable */
#define VBE_WinWritableMask 0x04
/* D3-D7 = Reserved */
/* ModeInfoBlock MemoryModel */
#define VBE_TextMode 0x00
#define VBE_CGAGraphics 0x01
#define VBE_HerculesGraphics 0x02
#define VBE_Planar 0x03
#define VBE_PackedPixel 0x04
#define VBE_NonChain4Color256 0x05
#define VBE_DirectColor 0x06
#define VBE_YUV 0x07
/* 0x08-0x0F Reserved, to be defined by VESA */
/* 0x10-0xFF To be defined by OEM */
/* ModeInfoBlock DirectColorModeInfo */
/* D0 = Color ramp is fixed/programmable */
/* 0 = Color ramp is fixed */
/* 1 = Color ramp is programmable */
#define VBE_ColRampProgMask 0x01
/* D1 = Bits in Rsvd field are usable/reserved */
/* 0 = Bits in Rsvd field are reserved */
/* 1 = Bits in Rsvd field are usable by the application */
#define VBE_RsvdBitsUsableMask 0x02
/* CRTCInfoBlock Flags */
/* D0 = Double Scan Mode Enable */
/* 0 = Graphics mode is not double scanned */
/* 1 = Graphics mode is double scanned */
#define VBE_GrModeDblScanMask 0x01
/* D1 = Interlaced Mode Enable */
/* 0 = Graphics mode is non-interlaced */
/* 1 = Graphics mode is interlaced */
#define VBE_GrModeInterlMask 0x02
/* D2 = Horizontal sync polarity */
/* 0 = Horizontal sync polarity is positive (+) */
/* 1 = Horizontal sync polarity is negative (-) */
#define VBE_HorSncPolNegMask 0x04
/* D3 = Vertical sync polarity */
/* 0 = Vertical sync polarity is positive (+) */
/* 1 = Vertical sync polarity is negative (-) */
#define VBE_VerSncPolNegMask 0x08
/* VESA BIOS Extensions/Display Data Channel Standard
Version: 1.1 November 18, 1999 */
/* VBE/DDC subfunction numbers - passed in BL register */
#define VBEDDC_Capabilities 0x0 /* Report VBE/DDC Capabilities */
#define VBEDDC_ReadEDID 0x1 /* Read EDID */
/* DDC Capabilities */
/* DDC level supported - returned in BL register */
/* 0 - DDC1 not supported; 1 - DDC1 supported */
#define VBEDDC_1SupportedMask 0x1
/* 0 - DDC2 not supported; 1 - DDC2 supported */
#define VBEDDC_2SupportedMask 0x2
/* 0 - Screen not blanked during data transfer;
1 - Screen blanked during data transfer */
#define VBEDDC_scrBlnkDatTrMs 0x4
/* VESA BIOS Extensions/Serial Control Interface Standard
Version: 1.0 Revision: 2 Date: July 2, 1997 */
/* VBE/SCI subfunction numbers - passed in BL register */
#define VBESCI_ReportCapabil 0x10 /* Report VBE/SCI Capabilities */
#define VBESCI_BegSCLSDACtrl 0x11 /* Begin SCL/SDA control */
#define VBESCI_EndSCLSDACtrl 0x12 /* End SCL/SDA control */
#define VBESCI_WrtSCLClkLine 0x13 /* Write SCL clock line */
#define VBESCI_WrtSDADatLine 0x14 /* Write SDA data line */
#define VBESCI_RdySCLClkLine 0x15 /* Read SCL clock line */
#define VBESCI_RdySDADatLine 0x16 /* Read SDA data line */
/* SCI Capabilities */
/* I2C level supported - returned in BL register */
#define VBESCI_capSCLwrtMask 0x1 /* Can write to SCL clock line */
#define VBESCI_capSDAwrtMask 0x2 /* Can write to SDA data line */
#define VBESCI_capSCLrdyMask 0x4 /* Can read from SCL clock line */
#define VBESCI_capSDArdyMask 0x8 /* Can read from SDA data line */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* ASM */
#endif /* _VBE_H */