/* $NetBSD: vbe.h,v 1.3 2011/02/09 04:37:54 jmcneill Exp $ */
/*-
* Copyright (c) 2009 Jared D. McNeill <
[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#define VBE_DEFAULT_MODE 0x101 /* 640x480x8 */
struct vbeinfoblock {
char VbeSignature[4];
uint16_t VbeVersion;
uint32_t OemStringPtr;
uint32_t Capabilities;
uint32_t VideoModePtr;
uint16_t TotalMemory;
uint16_t OemSoftwareRev;
uint32_t OemVendorNamePtr, OemProductNamePtr, OemProductRevPtr;
/* data area, in total max 512 bytes for VBE 2.0 */
uint8_t Reserved[222];
uint8_t OemData[256];
} __packed;
struct modeinfoblock {
/* Mandatory information for all VBE revisions */
uint16_t ModeAttributes;
uint8_t WinAAttributes, WinBAttributes;
uint16_t WinGranularity, WinSize, WinASegment, WinBSegment;
uint32_t WinFuncPtr;
uint16_t BytesPerScanLine;
/* Mandatory information for VBE 1.2 and above */
uint16_t XResolution, YResolution;
uint8_t XCharSize, YCharSize, NumberOfPlanes, BitsPerPixel;
uint8_t NumberOfBanks, MemoryModel, BankSize, NumberOfImagePages;
uint8_t Reserved1;
/* Direct Color fields
(required for direct/6 and YUV/7 memory models) */
uint8_t RedMaskSize, RedFieldPosition;
uint8_t GreenMaskSize, GreenFieldPosition;
uint8_t BlueMaskSize, BlueFieldPosition;
uint8_t RsvdMaskSize, RsvdFieldPosition;
uint8_t DirectColorModeInfo;
/* Mandatory information for VBE 2.0 and above */
uint32_t PhysBasePtr;
uint32_t OffScreenMemOffset; /* reserved in VBE 3.0 and above */
uint16_t OffScreenMemSize; /* reserved in VBE 3.0 and above */
/* Mandatory information for VBE 3.0 and above */
uint16_t LinBytesPerScanLine;
uint8_t BnkNumberOfImagePages;
uint8_t LinNumberOfImagePages;
uint8_t LinRedMaskSize, LinRedFieldPosition;
uint8_t LinGreenMaskSize, LinGreenFieldPosition;
uint8_t LinBlueMaskSize, LinBlueFieldPosition;
uint8_t LinRsvdMaskSize, LinRsvdFieldPosition;
uint32_t MaxPixelClock;
uint8_t Reserved4[189];
} __packed;
struct paletteentry {
uint8_t Blue;
uint8_t Green;
uint8_t Red;
uint8_t Alignment;
} __packed;
/* EDID */
#define EDID_MAGIC { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 }
#define EDID_DESC_BLOCK 0x36
/* low-level VBE calls, from biosvbe.S */
int biosvbe_info(struct vbeinfoblock *);
int biosvbe_set_mode(int);
int biosvbe_get_mode_info(int, struct modeinfoblock *);
int biosvbe_palette_format(int);
int biosvbe_palette_data(int, int, struct paletteentry *);
int biosvbe_ddc_caps(void);
int biosvbe_ddc_read_edid(int, void *);
/* high-level VBE helpers, from vbe.c */
void vbe_init(void);
int vbe_commit(void);
int vbe_available(void);
int vbe_set_mode(int);
int vbe_set_palette(const uint8_t *, int);
void vbe_modelist(void);
void command_vesa(char *);
/* adjust physical address; boot code runs with %ds having a 64k offset */
#define VBEPHYPTR(x) ((uint8_t *)((x) - (64 * 1024)))
