/**
 * \file
 * \brief Struct definition for the boot param struct supplied by the
 *        K1OM boot loader
 */

/*
 * Copyright (c) 2013 ETH Zurich.
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached LICENSE file.
 * If you do not find this file, copies can be found by writing to:
 * ETH Zurich D-INFK, Universitaetstrasse 6, CH-8092 Zurich. Attn: Systems Group.
 *
 * This is adapted from the Linux kernel (kernel.org)
 *
 */
#ifndef KERNEL_SCREEN_INFO_H
#define KERNEL_SCREEN_INFO_H

/*
 * These are set up by the setup-routine at boot-time:
 */

struct screen_info
{
    uint8_t orig_x;                 /* 0x00 */
    uint8_t orig_y;                 /* 0x01 */
    uint16_t ext_mem_k;             /* 0x02 */
    uint16_t orig_video_page;       /* 0x04 */
    uint8_t orig_video_mode;        /* 0x06 */
    uint8_t orig_video_cols;        /* 0x07 */
    uint8_t flags;                  /* 0x08 */
    uint8_t unused2;                /* 0x09 */
    uint16_t orig_video_ega_bx;     /* 0x0a */
    uint16_t unused3;               /* 0x0c */
    uint8_t orig_video_lines;       /* 0x0e */
    uint8_t orig_video_isVGA;       /* 0x0f */
    uint16_t orig_video_points;     /* 0x10 */

    /* VESA graphic mode -- linear frame buffer */
    uint16_t lfb_width;             /* 0x12 */
    uint16_t lfb_height;            /* 0x14 */
    uint16_t lfb_depth;             /* 0x16 */
    uint32_t lfb_base;              /* 0x18 */
    uint32_t lfb_size;              /* 0x1c */
    uint16_t cl_magic, cl_offset;   /* 0x20 */
    uint16_t lfb_linelength;        /* 0x24 */
    uint8_t red_size;               /* 0x26 */
    uint8_t red_pos;                /* 0x27 */
    uint8_t green_size;             /* 0x28 */
    uint8_t green_pos;              /* 0x29 */
    uint8_t blue_size;              /* 0x2a */
    uint8_t blue_pos;               /* 0x2b */
    uint8_t rsvd_size;              /* 0x2c */
    uint8_t rsvd_pos;               /* 0x2d */
    uint16_t vesapm_seg;            /* 0x2e */
    uint16_t vesapm_off;            /* 0x30 */
    uint16_t pages;                 /* 0x32 */
    uint16_t vesa_attributes;       /* 0x34 */
    uint32_t capabilities;          /* 0x36 */
    uint8_t _reserved[6];           /* 0x3a */
}__attribute__((packed));

#define VIDEO_TYPE_MDA          0x10    /* Monochrome Text Display  */
#define VIDEO_TYPE_CGA          0x11    /* CGA Display          */
#define VIDEO_TYPE_EGAM         0x20    /* EGA/VGA in Monochrome Mode   */
#define VIDEO_TYPE_EGAC         0x21    /* EGA in Color Mode        */
#define VIDEO_TYPE_VGAC         0x22    /* VGA+ in Color Mode       */
#define VIDEO_TYPE_VLFB         0x23    /* VESA VGA in graphic mode */

#define VIDEO_TYPE_PICA_S3      0x30    /* ACER PICA-61 local S3 video  */
#define VIDEO_TYPE_MIPS_G364    0x31    /* MIPS Magnum 4000 G364 video  */
#define VIDEO_TYPE_SGI          0x33    /* Various SGI graphics hardware */

#define VIDEO_TYPE_TGAC         0x40    /* DEC TGA */

#define VIDEO_TYPE_SUN          0x50    /* Sun frame buffer. */
#define VIDEO_TYPE_SUNPCI       0x51    /* Sun PCI based frame buffer. */

#define VIDEO_TYPE_PMAC         0x60    /* PowerMacintosh frame buffer. */

#define VIDEO_TYPE_EFI          0x70    /* EFI graphic mode     */

#define VIDEO_FLAGS_NOCURSOR    (1<<0) /* The video mode has no cursor set */

#define VIDEO_CAPABILITY_SKIP_QUIRKS    (1 << 0)

#endif /* KERNEL_SCREEN_INFO_H */