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42 | pj | 1 | /* Project: OSLib |
2 | * Description: The OS Construction Kit |
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3 | * Date: 1.6.2000 |
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4 | * Idea by: Luca Abeni & Gerardo Lamastra |
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5 | * |
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6 | * OSLib is an SO project aimed at developing a common, easy-to-use |
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7 | * low-level infrastructure for developing OS kernels and Embedded |
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8 | * Applications; it partially derives from the HARTIK project but it |
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9 | * currently is independently developed. |
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10 | * |
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11 | * OSLib is distributed under GPL License, and some of its code has |
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12 | * been derived from the Linux kernel source; also some important |
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13 | * ideas come from studying the DJGPP go32 extender. |
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14 | * |
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15 | * We acknowledge the Linux Community, Free Software Foundation, |
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16 | * D.J. Delorie and all the other developers who believe in the |
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17 | * freedom of software and ideas. |
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18 | * |
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19 | * For legalese, check out the included GPL license. |
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20 | */ |
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21 | |||
22 | /* |
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23 | * GRUB -- GRand Unified Bootloader |
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24 | * Copyright (C) 1996 Erich Boleyn <erich@uruk.org> |
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25 | * |
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26 | * This program is free software; you can redistribute it and/or modify |
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27 | * it under the terms of the GNU General Public License as published by |
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28 | * the Free Software Foundation; either version 2 of the License, or |
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29 | * (at your option) any later version. |
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30 | * |
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31 | * This program is distributed in the hope that it will be useful, |
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32 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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33 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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34 | * GNU General Public License for more details. |
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35 | * |
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36 | * You should have received a copy of the GNU General Public License |
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37 | * along with this program; if not, write to the Free Software |
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38 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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39 | */ |
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40 | |||
41 | #ifndef __LL_I386_MB_INFO_H__ |
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42 | #define __LL_I386_MB_INFO_H__ |
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43 | |||
44 | #include <ll/i386/defs.h> |
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45 | BEGIN_DEF |
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46 | |||
47 | |||
48 | /* |
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49 | * The structure type "mod_list" is used by the "multiboot_info" structure. |
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50 | */ |
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51 | |||
52 | struct mod_list |
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53 | { |
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54 | /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ |
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55 | unsigned long mod_start; |
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56 | unsigned long mod_end; |
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57 | |||
58 | /* Module command line */ |
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59 | unsigned long cmdline; |
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60 | |||
61 | /* padding to take it to 16 bytes (must be zero) */ |
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62 | unsigned long pad; |
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63 | }; |
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64 | |||
65 | |||
66 | /* |
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67 | * INT-15, AX=E820 style "AddressRangeDescriptor" |
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68 | * ...with a "size" parameter on the front which is the structure size - 4, |
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69 | * pointing to the next one, up until the full buffer length of the memory |
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70 | * map has been reached. |
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71 | */ |
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72 | |||
73 | struct AddrRangeDesc |
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74 | { |
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75 | unsigned long size; |
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76 | unsigned long BaseAddrLow; |
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77 | unsigned long BaseAddrHigh; |
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78 | unsigned long LengthLow; |
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79 | unsigned long LengthHigh; |
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80 | unsigned long Type; |
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81 | |||
82 | /* unspecified optional padding... */ |
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83 | }; |
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84 | |||
85 | /* usable memory "Type", all others are reserved. */ |
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86 | #define MB_ARD_MEMORY 1 |
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87 | |||
88 | /* |
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89 | * MultiBoot Info description |
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90 | * |
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91 | * This is the struct passed to the boot image. This is done by placing |
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92 | * its address in the EAX register. |
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93 | */ |
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94 | |||
95 | struct multiboot_info |
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96 | { |
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97 | /* MultiBoot info version number */ |
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98 | unsigned long flags; |
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99 | |||
100 | /* Available memory from BIOS */ |
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101 | unsigned long mem_lower; |
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102 | unsigned long mem_upper; |
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103 | /* "root" partition */ |
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104 | unsigned long boot_device; |
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105 | |||
106 | /* Kernel command line */ |
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107 | unsigned long cmdline; |
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108 | |||
109 | /* Boot-Module list */ |
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110 | unsigned long mods_count; |
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111 | unsigned long mods_addr; |
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112 | |||
113 | union |
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114 | { |
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115 | struct |
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116 | { |
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117 | /* (a.out) Kernel symbol table info */ |
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118 | unsigned long tabsize; |
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119 | unsigned long strsize; |
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120 | unsigned long addr; |
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121 | unsigned long pad; |
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122 | } a; |
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123 | |||
124 | struct |
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125 | { |
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126 | /* (ELF) Kernel section header table */ |
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127 | unsigned long num; |
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128 | unsigned long size; |
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129 | unsigned long addr; |
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130 | unsigned long shndx; |
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131 | } e; |
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132 | } syms; |
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133 | |||
134 | /* Memory Mapping buffer */ |
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135 | unsigned long mmap_length; |
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136 | unsigned long mmap_addr; |
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137 | |||
138 | /* Drive Info buffer */ |
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139 | unsigned long drives_length; |
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140 | unsigned long drives_addr; |
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141 | |||
142 | /* ROM configuration table */ |
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143 | unsigned long config_table; |
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144 | |||
145 | /* Boot Loader Name */ |
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146 | unsigned long boot_loader_name; |
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147 | |||
148 | /* APM table */ |
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149 | unsigned long apm_table; |
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150 | |||
151 | /* Video */ |
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152 | unsigned long vbe_control_info; |
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153 | unsigned long vbe_mode_info; |
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154 | unsigned short vbe_mode; |
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155 | unsigned short vbe_interface_seg; |
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156 | unsigned short vbe_interface_off; |
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157 | unsigned short vbe_interface_len; |
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158 | #ifndef __OLD_MB__ |
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159 | /* |
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160 | Gerardo: I need to add also the phisical address base for |
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161 | both low ( < 1MB) & upper ( > 1MB) memory, as X starts from DOS |
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162 | which could have preallocated some of this memory... |
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163 | For example, GRUB assumes that mem_lowbase = 0x0 & |
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164 | mem_upbase = 0x100000 |
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165 | */ |
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166 | unsigned long mem_lowbase; |
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167 | unsigned long mem_upbase; |
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168 | #endif /* __OLD_MB__ */ |
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169 | }; |
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170 | |||
171 | /* |
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172 | * Flags to be set in the 'flags' parameter above |
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173 | */ |
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174 | |||
175 | /* is there basic lower/upper memory information? */ |
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176 | #define MB_INFO_MEMORY 0x1 |
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177 | /* is there a boot device set? */ |
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178 | #define MB_INFO_BOOTDEV 0x2 |
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179 | /* is the command-line defined? */ |
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180 | #define MB_INFO_CMDLINE 0x4 |
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181 | /* are there modules to do something with? */ |
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182 | #define MB_INFO_MODS 0x8 |
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183 | |||
184 | /* These next two are mutually exclusive */ |
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185 | |||
186 | /* is there a symbol table loaded? */ |
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187 | #define MB_INFO_AOUT_SYMS 0x10 |
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188 | /* is there an ELF section header table? */ |
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189 | #define MB_INFO_ELF_SHDR 0x20 |
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190 | |||
191 | /* is there a full memory map? */ |
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192 | #define MB_INFO_MEM_MAP 0x40 |
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193 | |||
194 | /* Is there drive info? */ |
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195 | #define MB_INFO_DRIVE_INFO 0x00000080 |
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196 | |||
197 | /* Is there a config table? */ |
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198 | #define MB_INFO_CONFIG_TABLE 0x00000100 |
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199 | |||
200 | /* Is there a boot loader name? */ |
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201 | #define MB_INFO_BOOT_LOADER_NAME 0x00000200 |
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202 | |||
203 | /* Is there a APM table? */ |
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204 | #define MB_INFO_APM_TABLE 0x00000400 |
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205 | |||
206 | /* Is there video information? */ |
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207 | #define MB_INFO_VIDEO_INFO 0x00000800 |
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208 | |||
209 | #if 0 |
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210 | /* Gerardo: Added this! |
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211 | -------------------- |
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212 | The idea is that the BootLoader provides an interface |
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213 | to return back to it; this is useful to implement a DOS |
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214 | boot-loader, in order to use DOS as development environment. |
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215 | */ |
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216 | #define MB_INFO_USEGDT 0x80 |
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217 | #endif |
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218 | /* |
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219 | * The following value must be present in the EAX register. |
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220 | */ |
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221 | |||
222 | #define MULTIBOOT_VALID 0x2BADB002 |
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223 | |||
224 | struct multiboot_info * mbi_address(void); |
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225 | |||
226 | END_DEF |
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227 | |||
228 | #endif |