/* Copyright (C) 1999,2003,2007,2008,2009 Free Software Foundation, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY * DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /** * @defgroup boards_x86-multiboot i586 multiboot common * @ingroup boards * @brief Common files for multiboot enabled kernels * * @ingroup x86-multiboot * @{ * @file * @brief Architecture specific definitions for multiboot enabled kernels */ #ifndef MULTIBOOT_H #define MULTIBOOT_H #ifdef __cplusplus extern "C" { #endif /** How many bytes from the start of the file we search for the header. */ #define MULTIBOOT_SEARCH 8192 /** The flags for the Multiboot header. */ #define MULTIBOOT_HEADER_FLAGS 0x00010003 /** The magic field should contain this. */ #define MULTIBOOT_HEADER_MAGIC 0x1BADB002 /** This should be in %eax. */ #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 /** The bits in the required part of flags field we don't support. */ #define MULTIBOOT_UNSUPPORTED 0x0000fffc /** Alignment of multiboot modules. */ #define MULTIBOOT_MOD_ALIGN 0x00001000 /** Alignment of the multiboot info structure. */ #define MULTIBOOT_INFO_ALIGN 0x00000004 /** Flags set in the 'flags' member of the multiboot header. */ /** Align all boot modules on i386 page (4KB) boundaries. */ #define MULTIBOOT_PAGE_ALIGN 0x00000001 /** Must pass memory information to OS. */ #define MULTIBOOT_MEMORY_INFO 0x00000002 /** Must pass video information to OS. */ #define MULTIBOOT_VIDEO_MODE 0x00000004 /** This flag indicates the use of the address fields in the header. */ #define MULTIBOOT_AOUT_KLUDGE 0x00010000 /** Flags to be set in the 'flags' member of the multiboot info structure. */ /** is there basic lower/upper memory information? */ #define MULTIBOOT_INFO_MEMORY 0x00000001 /** is there a boot device set? */ #define MULTIBOOT_INFO_BOOTDEV 0x00000002 /** is the command-line defined? */ #define MULTIBOOT_INFO_CMDLINE 0x00000004 /** are there modules to do something with? */ #define MULTIBOOT_INFO_MODS 0x00000008 /** These next two are mutually exclusive */ /** is there a symbol table loaded? */ #define MULTIBOOT_INFO_AOUT_SYMS 0x00000010 /** is there an ELF section header table? */ #define MULTIBOOT_INFO_ELF_SHDR 0X00000020 /** is there a full memory map? */ #define MULTIBOOT_INFO_MEM_MAP 0x00000040 /** Is there drive info? */ #define MULTIBOOT_INFO_DRIVE_INFO 0x00000080 /** Is there a config table? */ #define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100 /** Is there a boot loader name? */ #define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200 /** Is there a APM table? */ #define MULTIBOOT_INFO_APM_TABLE 0x00000400 /** Is there video information? */ #define MULTIBOOT_INFO_VIDEO_INFO 0x00000800 #ifndef ASM_FILE typedef unsigned short multiboot_uint16_t; typedef unsigned int multiboot_uint32_t; typedef unsigned long long multiboot_uint64_t; typedef struct multiboot_header { /** Must be MULTIBOOT_MAGIC - see above. */ multiboot_uint32_t magic; /** Feature flags. */ multiboot_uint32_t flags; /** The above fields plus this one must equal 0 mod 2^32. */ multiboot_uint32_t checksum; /** These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */ multiboot_uint32_t header_addr; multiboot_uint32_t load_addr; multiboot_uint32_t load_end_addr; multiboot_uint32_t bss_end_addr; multiboot_uint32_t entry_addr; /** These are only valid if MULTIBOOT_VIDEO_MODE is set. */ multiboot_uint32_t mode_type; multiboot_uint32_t width; multiboot_uint32_t height; multiboot_uint32_t depth; } multiboot_header_t; /** The symbol table for a.out. */ struct multiboot_aout_symbol_table { multiboot_uint32_t tabsize; multiboot_uint32_t strsize; multiboot_uint32_t addr; multiboot_uint32_t reserved; }; typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t; /** The section header table for ELF. */ struct multiboot_elf_section_header_table { multiboot_uint32_t num; multiboot_uint32_t size; multiboot_uint32_t addr; multiboot_uint32_t shndx; }; typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t; struct multiboot_info { /** Multiboot info version number */ multiboot_uint32_t flags; /** Available memory from BIOS */ multiboot_uint32_t mem_lower; multiboot_uint32_t mem_upper; /** "root" partition */ multiboot_uint32_t boot_device; /** Kernel command line */ multiboot_uint32_t cmdline; /** Boot-Module list */ multiboot_uint32_t mods_count; multiboot_uint32_t mods_addr; union { multiboot_aout_symbol_table_t aout_sym; multiboot_elf_section_header_table_t elf_sec; } u; /** Memory Mapping buffer */ multiboot_uint32_t mmap_length; multiboot_uint32_t mmap_addr; /** Drive Info buffer */ multiboot_uint32_t drives_length; multiboot_uint32_t drives_addr; /** ROM configuration table */ multiboot_uint32_t config_table; /** Boot Loader Name */ multiboot_uint32_t boot_loader_name; /** APM table */ multiboot_uint32_t apm_table; /** Video */ multiboot_uint32_t vbe_control_info; multiboot_uint32_t vbe_mode_info; multiboot_uint16_t vbe_mode; multiboot_uint16_t vbe_interface_seg; multiboot_uint16_t vbe_interface_off; multiboot_uint16_t vbe_interface_len; }; typedef struct multiboot_info multiboot_info_t; struct multiboot_mmap_entry { multiboot_uint32_t size; multiboot_uint64_t addr; multiboot_uint64_t len; #define MULTIBOOT_MEMORY_AVAILABLE 1 #define MULTIBOOT_MEMORY_RESERVED 2 multiboot_uint32_t type; } __attribute__((packed)); typedef struct multiboot_mmap_entry multiboot_memory_map_t; struct multiboot_mod_list { /** the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ multiboot_uint32_t mod_start; multiboot_uint32_t mod_end; /** Module command line */ multiboot_uint32_t cmdline; /** padding to take it to 16 bytes (must be zero) */ multiboot_uint32_t pad; }; typedef struct multiboot_mod_list multiboot_module_t; #endif /** ! ASM_FILE */ #ifdef __cplusplus } #endif #endif /* MULTIBOOT_H */ /** @} */