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854 | serge | 1 | /* multiboot.h - the header for Multiboot */ |
2 | /* Copyright (C) 1999, 2001 Free Software Foundation, Inc. |
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3 | |||
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 | |||
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 | |||
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 | |||
18 | /* Macros. */ |
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19 | |||
20 | /* The magic number for the Multiboot header. */ |
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21 | #define MULTIBOOT_HEADER_MAGIC 0x1BADB002 |
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22 | |||
23 | /* The flags for the Multiboot header. */ |
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24 | #ifdef __ELF__ |
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25 | # define MULTIBOOT_HEADER_FLAGS 0x00000003 |
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26 | #else |
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27 | # define MULTIBOOT_HEADER_FLAGS 0x00010003 |
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28 | #endif |
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29 | |||
30 | /* The magic number passed by a Multiboot-compliant boot loader. */ |
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31 | #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 |
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32 | |||
33 | /* The size of our stack (16KB). */ |
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34 | #define STACK_SIZE 0x4000 |
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35 | |||
36 | /* C symbol format. HAVE_ASM_USCORE is defined by configure. */ |
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37 | #ifdef HAVE_ASM_USCORE |
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38 | # define EXT_C(sym) _ ## sym |
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39 | #else |
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40 | # define EXT_C(sym) sym |
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41 | #endif |
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42 | |||
43 | #ifndef ASM |
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44 | /* Do not include here in boot.S. */ |
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45 | |||
46 | /* Types. */ |
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47 | |||
48 | /* The Multiboot header. */ |
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49 | typedef struct multiboot_header |
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50 | { |
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51 | unsigned long magic; |
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52 | unsigned long flags; |
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53 | unsigned long checksum; |
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54 | unsigned long header_addr; |
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55 | unsigned long load_addr; |
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56 | unsigned long load_end_addr; |
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57 | unsigned long bss_end_addr; |
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58 | unsigned long entry_addr; |
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59 | } multiboot_header_t; |
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60 | |||
61 | /* The symbol table for a.out. */ |
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62 | typedef struct aout_symbol_table |
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63 | { |
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64 | unsigned long tabsize; |
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65 | unsigned long strsize; |
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66 | unsigned long addr; |
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67 | unsigned long reserved; |
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68 | } aout_symbol_table_t; |
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69 | |||
70 | /* The section header table for ELF. */ |
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71 | typedef struct elf_section_header_table |
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72 | { |
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73 | unsigned long num; |
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74 | unsigned long size; |
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75 | unsigned long addr; |
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76 | unsigned long shndx; |
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77 | } elf_section_header_table_t; |
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78 | |||
79 | /* The Multiboot information. */ |
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80 | typedef struct multiboot_info |
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81 | { |
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82 | unsigned long flags; |
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83 | unsigned long mem_lower; |
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84 | unsigned long mem_upper; |
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85 | unsigned long boot_device; |
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86 | unsigned long cmdline; |
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87 | unsigned long mods_count; |
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88 | unsigned long mods_addr; |
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89 | union |
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90 | { |
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91 | aout_symbol_table_t aout_sym; |
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92 | elf_section_header_table_t elf_sec; |
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93 | } u; |
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94 | unsigned long mmap_length; |
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95 | unsigned long mmap_addr; |
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96 | } multiboot_info_t; |
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97 | |||
98 | /* The module structure. */ |
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99 | typedef struct module |
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100 | { |
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101 | unsigned long mod_start; |
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102 | unsigned long mod_end; |
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103 | unsigned long string; |
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104 | unsigned long reserved; |
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105 | } module_t; |
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106 | |||
107 | /* The memory map. Be careful that the offset 0 is base_addr_low |
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108 | but no size. */ |
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109 | typedef struct memory_map |
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110 | { |
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111 | unsigned long size; |
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112 | unsigned long base_addr_low; |
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113 | unsigned long base_addr_high; |
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114 | unsigned long length_low; |
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115 | unsigned long length_high; |
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116 | unsigned long type; |
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117 | } memory_map_t; |
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118 | |||
119 | #endif /* ! ASM */ |