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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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 are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/Types.h>
30
31struct multiboot_aout_symbol_table {
32 u32 tabsize;
33 u32 strsize;
34 u32 addr;
35 u32 reserved;
36};
37typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
38
39struct multiboot_elf_section_header_table {
40 u32 num;
41 u32 size;
42 u32 addr;
43 u32 shndx;
44};
45typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
46
47#define MULTIBOOT_MEMORY_AVAILABLE 1
48#define MULTIBOOT_MEMORY_RESERVED 2
49#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
50#define MULTIBOOT_MEMORY_NVS 4
51#define MULTIBOOT_MEMORY_BADRAM 5
52
53struct multiboot_mmap_entry {
54 u32 size;
55 u64 addr;
56 u64 len;
57 u32 type;
58} __attribute__((packed));
59typedef struct multiboot_mmap_entry multiboot_memory_map_t;
60
61struct multiboot_info {
62 // Multiboot info version number.
63 u32 flags;
64
65 // Available memory from BIOS.
66 u32 mem_lower;
67 u32 mem_upper;
68
69 // "root" partition.
70 u32 boot_device;
71
72 // Kernel command line.
73 u32 cmdline;
74
75 // Boot-Module list.
76 u32 mods_count;
77 u32 mods_addr;
78
79 union {
80 multiboot_aout_symbol_table_t aout_sym;
81 multiboot_elf_section_header_table_t elf_sec;
82 } u;
83
84 // Memory Mapping buffer.
85 u32 mmap_length;
86 u32 mmap_addr;
87
88 // Drive Info buffer.
89 u32 drives_length;
90 u32 drives_addr;
91
92 // ROM configuration table.
93 u32 config_table;
94
95 // Boot Loader Name.
96 u32 boot_loader_name;
97
98 // APM table.
99 u32 apm_table;
100
101 // Video.
102 u32 vbe_control_info;
103 u32 vbe_mode_info;
104 u16 vbe_mode;
105 u16 vbe_interface_seg;
106 u16 vbe_interface_off;
107 u16 vbe_interface_len;
108
109 u64 framebuffer_addr;
110 u32 framebuffer_pitch;
111 u32 framebuffer_width;
112 u32 framebuffer_height;
113 u8 framebuffer_bpp;
114#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
115#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
116#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
117 u8 framebuffer_type;
118 union {
119 struct
120 {
121 u32 framebuffer_palette_addr;
122 u16 framebuffer_palette_num_colors;
123 };
124 struct
125 {
126 u8 framebuffer_red_field_position;
127 u8 framebuffer_red_mask_size;
128 u8 framebuffer_green_field_position;
129 u8 framebuffer_green_mask_size;
130 u8 framebuffer_blue_field_position;
131 u8 framebuffer_blue_mask_size;
132 };
133 };
134};
135typedef struct multiboot_info multiboot_info_t;
136
137extern "C" multiboot_info_t* multiboot_info_ptr;