| Corey Tabaka | 8469724 | 2009-03-26 02:32:01 -0400 | [diff] [blame] | 1 | /*
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| 2 | * Copyright (c) 2009 Corey Tabaka
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| 3 | *
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining
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| 5 | * a copy of this software and associated documentation files
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| 6 | * (the "Software"), to deal in the Software without restriction,
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| 7 | * including without limitation the rights to use, copy, modify, merge,
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| 8 | * publish, distribute, sublicense, and/or sell copies of the Software,
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| 9 | * and to permit persons to whom the Software is furnished to do so,
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| 10 | * subject to the following conditions:
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| 11 | *
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| 12 | * The above copyright notice and this permission notice shall be
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| 13 | * included in all copies or substantial portions of the Software.
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| 14 | *
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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| 22 | */
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| 23 | #ifndef __PLATFORM_MULTIBOOT_H
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| 24 | #define __PLATFORM_MULTIBOOT_H
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| 25 |
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| 26 | #include <sys/types.h>
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| 27 |
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| 28 | /* magic number for multiboot header */
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| 29 | #define MULTIBOOT_HEADER_MAGIC 0x1BADB002
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| 30 |
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| 31 | /* flags for multiboot header */
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| 32 | #ifdef __ELF__
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| 33 | #define MULTIBOOT_HEADER_FLAGS 0x00000003
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| 34 | #else
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| 35 | #define MULTIBOOT_HEADER_FLAGS 0x00010003
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| 36 | #endif
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| 37 |
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| 38 | /* magic number passed by multiboot-compliant boot loaders */
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| 39 | #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
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| 40 |
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| 41 | #ifndef ASSEMBLY
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| 42 |
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| 43 | /* multiboot header */
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| 44 | typedef struct multiboot_header
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| 45 | {
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| 46 | uint32_t magic;
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| 47 | uint32_t flags;
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| 48 | uint32_t checksum;
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| 49 | uint32_t header_addr;
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| 50 | uint32_t load_addr;
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| 51 | uint32_t load_end_addr;
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| 52 | uint32_t bss_end_addr;
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| 53 | uint32_t entry_addr;
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| 54 | } multiboot_header_t;
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| 55 |
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| 56 | /* symbol table for a.out */
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| 57 | typedef struct aout_symbol_table
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| 58 | {
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| 59 | uint32_t tabsize;
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| 60 | uint32_t strsize;
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| 61 | uint32_t addr;
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| 62 | uint32_t reserved;
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| 63 | } aout_symbol_table_t;
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| 64 |
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| 65 | /* section header table for ELF */
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| 66 | typedef struct elf_section_header_table
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| 67 | {
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| 68 | uint32_t num;
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| 69 | uint32_t size;
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| 70 | uint32_t addr;
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| 71 | uint32_t shndx;
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| 72 | } elf_section_header_table_t;
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| 73 |
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| 74 | /* multiboot info */
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| 75 | typedef struct multiboot_info
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| 76 | {
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| 77 | uint32_t flags;
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| 78 | uint32_t mem_lower;
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| 79 | uint32_t mem_upper;
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| 80 | uint32_t boot_device;
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| 81 | uint32_t cmdline;
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| 82 | uint32_t mods_count;
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| 83 | uint32_t mods_addr;
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| 84 | union
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| 85 | {
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| 86 | aout_symbol_table_t aout_sym;
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| 87 | elf_section_header_table_t elf_sec;
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| 88 | } u;
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| 89 | uint32_t mmap_length;
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| 90 | uint32_t mmap_addr;
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| 91 | } multiboot_info_t;
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| 92 |
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| 93 | enum {
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| 94 | MB_INFO_MEM_SIZE = 0x001,
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| 95 | MB_INFO_BOOT_DEV = 0x002,
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| 96 | MB_INFO_CMD_LINE = 0x004,
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| 97 | MB_INFO_MODS = 0x008,
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| 98 | MB_INFO_SYMS = 0x010,
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| 99 | MB_INFO_MMAP = 0x020,
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| 100 | MB_INFO_DRIVES = 0x040,
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| 101 | MB_INFO_CONFIG = 0x080,
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| 102 | MB_INFO_BOOT_LOADER = 0x100,
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| 103 | MB_INFO_APM_TABLE = 0x200,
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| 104 | MB_INFO_VBE = 0x400,
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| 105 | };
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| 106 |
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| 107 | /* module structure */
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| 108 | typedef struct module
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| 109 | {
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| 110 | uint32_t mod_start;
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| 111 | uint32_t mod_end;
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| 112 | uint32_t string;
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| 113 | uint32_t reserved;
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| 114 | } module_t;
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| 115 |
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| 116 | /* memory map - be careful that the offset 0 is base_addr_low without size */
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| 117 | typedef struct memory_map
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| 118 | {
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| 119 | uint32_t size;
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| 120 | uint32_t base_addr_low;
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| 121 | uint32_t base_addr_high;
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| 122 | uint32_t length_low;
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| 123 | uint32_t length_high;
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| 124 | uint32_t type;
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| 125 | } memory_map_t;
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| 126 |
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| 127 | /* memory map entry types */
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| 128 | enum {
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| 129 | MB_MMAP_TYPE_AVAILABLE = 0x01,
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| 130 | MB_MMAP_TYPE_RESERVED = 0x02,
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| 131 | MB_MMAP_TYPE_ACPI_RECLAIM = 0x03,
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| 132 | MB_MMAP_TYPE_ACPI_NVS = 0x04,
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| 133 | };
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| 134 |
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| 135 | #endif
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| 136 |
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| 137 | #endif
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