The LXR Cross Referencer for SOS

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001 #ifndef __MULTIBOOT_H__
002 #define __MULTIBOOT_H__
003 
004 /* multiboot.h - the header for Multiboot */
005 /* Copyright (C) 1999  Free Software Foundation, Inc.
006    
007    This program is free software; you can redistribute it and/or modify
008    it under the terms of the GNU General Public License as published by
009    the Free Software Foundation; either version 2 of the License, or
010    (at your option) any later version.
011    
012    This program is distributed in the hope that it will be useful,
013    but WITHOUT ANY WARRANTY; without even the implied warranty of
014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015    GNU General Public License for more details.
016    
017    You should have received a copy of the GNU General Public License
018    along with this program; if not, write to the Free Software
019    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
020 
021 /* Macros.  */
022 
023 /* The magic number for the Multiboot header.  */
024 #define MULTIBOOT_HEADER_MAGIC          0x1BADB002
025 
026 /* The flags for the Multiboot header.  */
027 #define MULTIBOOT_HEADER_FLAGS          0x00010003
028 
029 /* The magic number passed by a Multiboot-compliant boot loader.  */
030 #define MULTIBOOT_BOOTLOADER_MAGIC      0x2BADB002
031 
032 /* The size of our stack (16KB).  */
033 #define MULTIBOOT_STACK_SIZE            0x4000
034 
035 #define MULTIBOOT_CMDLINE 4
036 #define MULTIBOOT_MODS 8
037 
038 /* C symbol format. HAVE_ASM_USCORE is defined by configure.  */
039 #ifdef HAVE_ASM_USCORE
040 # define EXT_C(sym)                     _ ## sym
041 #else
042 # define EXT_C(sym)                     sym
043 #endif
044 
045 #ifndef ASM
046 /* Do not include here in the assembler sources.  */
047 
048 #include <sos/types.h>
049 
050 /* The address of the stack of the bootstrap thread */
051 extern sos_vaddr_t bootstrap_stack_bottom;
052 extern sos_size_t bootstrap_stack_size;
053 
054 /* Types.  */
055 
056 /* The Multiboot header.  */
057 typedef struct multiboot_header
058 {
059   unsigned long magic;
060   unsigned long flags;
061   unsigned long checksum;
062   unsigned long header_addr;
063   unsigned long load_addr;
064   unsigned long load_end_addr;
065   unsigned long bss_end_addr;
066   unsigned long entry_addr;
067 } multiboot_header_t;
068 
069 /* The symbol table for a.out.  */
070 typedef struct aout_symbol_table
071 {
072   unsigned long tabsize;
073   unsigned long strsize;
074   unsigned long addr;
075   unsigned long reserved;
076 } aout_symbol_table_t;
077 
078 /* The section header table for ELF.  */
079 typedef struct elf_section_header_table
080 {
081   unsigned long num;
082   unsigned long size;
083   unsigned long addr;
084   unsigned long shndx;
085 } elf_section_header_table_t;
086 
087 /* The Multiboot information.  */
088 typedef struct multiboot_info
089 {
090   unsigned long flags;
091   unsigned long mem_lower;
092   unsigned long mem_upper;
093   unsigned long boot_device;
094   unsigned long cmdline;
095   unsigned long mods_count;
096   unsigned long mods_addr;
097   union
098   {
099     aout_symbol_table_t aout_sym;
100     elf_section_header_table_t elf_sec;
101   } u;
102   unsigned long mmap_length;
103   unsigned long mmap_addr;
104   unsigned long drives_length;
105   unsigned long drives_addr;
106 } multiboot_info_t;
107 
108 /* The module structure.  */
109 typedef struct module
110 {
111   unsigned long mod_start;
112   unsigned long mod_end;
113   unsigned long string;
114   unsigned long reserved;
115 } module_t;
116 
117 /* The memory map. Be careful that the offset 0 is base_addr_low
118    but no size.  */
119 typedef struct memory_map
120 {
121   unsigned long size;
122   unsigned long base_addr_low;
123   unsigned long base_addr_high;
124   unsigned long length_low;
125   unsigned long length_high;
126   unsigned long type;
127 } memory_map_t;
128 
129 void dump_multiboot_info(multiboot_info_t *mbi);
130 
131 #endif /* ! ASM */
132 
133 #endif /* __MULTIBOOT_H__ */
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