| 1 | /* multiboot.h - the header for Multiboot */ |
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| 2 | /* Copyright (C) 1999 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This program is free software; you can redistribute it and/or modify |
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| 5 | it under the terms of the GNU General Public License as published by |
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| 6 | the Free Software Foundation; either version 2 of the License, or |
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| 7 | (at your option) any later version. |
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| 8 | |
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| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 12 | GNU General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU General Public License |
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| 15 | along with this program; if not, write to the Free Software |
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| 16 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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| 17 | |
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| 18 | /* Macros. */ |
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| 19 | |
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| 20 | /* The magic number for the Multiboot header. */ |
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| 21 | #define MULTIBOOT_HEADER_MAGIC 0x1BADB002 |
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| 22 | |
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| 23 | /* The flags for the Multiboot header. */ |
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| 24 | #define MULTIBOOT_HEADER_FLAGS 0x00010003 |
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| 25 | |
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| 26 | /* The magic number passed by a Multiboot-compliant boot loader. */ |
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| 27 | #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 |
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| 28 | |
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| 29 | /* The size of our stack (16KB). */ |
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| 30 | #define STACK_SIZE 0x4000 |
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| 31 | |
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| 32 | /* C symbol format. HAVE_ASM_USCORE is defined by configure. */ |
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| 33 | #ifdef HAVE_ASM_USCORE |
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| 34 | # define EXT_C(sym) _ ## sym |
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| 35 | #else |
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| 36 | # define EXT_C(sym) sym |
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| 37 | #endif |
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| 38 | |
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| 39 | #ifndef ASM |
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| 40 | /* Do not include here in boot.S. */ |
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| 41 | |
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| 42 | /* Types. */ |
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| 43 | |
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| 44 | /* The Multiboot header. */ |
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| 45 | typedef struct multiboot_header |
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| 46 | { |
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| 47 | unsigned long magic; |
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| 48 | unsigned long flags; |
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| 49 | unsigned long checksum; |
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| 50 | unsigned long header_addr; |
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| 51 | unsigned long load_addr; |
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| 52 | unsigned long load_end_addr; |
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| 53 | unsigned long bss_end_addr; |
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| 54 | unsigned long entry_addr; |
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| 55 | } multiboot_header_t; |
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| 56 | |
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| 57 | /* The symbol table for a.out. */ |
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| 58 | typedef struct aout_symbol_table |
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| 59 | { |
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| 60 | unsigned long tabsize; |
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| 61 | unsigned long strsize; |
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| 62 | unsigned long addr; |
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| 63 | unsigned long reserved; |
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| 64 | } aout_symbol_table_t; |
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| 65 | |
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| 66 | /* The section header table for ELF. */ |
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| 67 | typedef struct elf_section_header_table |
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| 68 | { |
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| 69 | unsigned long num; |
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| 70 | unsigned long size; |
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| 71 | unsigned long addr; |
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| 72 | unsigned long shndx; |
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| 73 | } elf_section_header_table_t; |
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| 74 | |
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| 75 | /* The Multiboot information. */ |
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| 76 | typedef struct multiboot_info |
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| 77 | { |
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| 78 | unsigned long flags; |
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| 79 | unsigned long mem_lower; |
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| 80 | unsigned long mem_upper; |
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| 81 | unsigned long boot_device; |
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| 82 | unsigned long cmdline; |
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| 83 | unsigned long mods_count; |
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| 84 | unsigned long mods_addr; |
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| 85 | union |
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| 86 | { |
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| 87 | aout_symbol_table_t aout_sym; |
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| 88 | elf_section_header_table_t elf_sec; |
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| 89 | } u; |
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| 90 | unsigned long mmap_length; |
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| 91 | unsigned long mmap_addr; |
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| 92 | } multiboot_info_t; |
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| 93 | |
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| 94 | /* The module structure. */ |
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| 95 | typedef struct module |
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| 96 | { |
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| 97 | unsigned long mod_start; |
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| 98 | unsigned long mod_end; |
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| 99 | unsigned long string; |
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| 100 | unsigned long reserved; |
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| 101 | } module_t; |
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| 102 | |
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| 103 | /* The memory map. Be careful that the offset 0 is base_addr_low |
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| 104 | but no size. */ |
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| 105 | typedef struct memory_map |
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| 106 | { |
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| 107 | unsigned long size; |
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| 108 | unsigned long base_addr_low; |
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| 109 | unsigned long base_addr_high; |
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| 110 | unsigned long length_low; |
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| 111 | unsigned long length_high; |
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| 112 | unsigned long type; |
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| 113 | } memory_map_t; |
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| 114 | |
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| 115 | #endif /* ! ASM */ |
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