/* multiboot.h - multiboot header file. */ /* * PUPA -- Preliminary Universal Programming Architecture for GRUB * Copyright (C) 2003 Jeroen Dekkers * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef PUPA_MULTIBOOT_MACHINE_HEADER #define PUPA_MULTIBOOT_MACHINE_HEADER 1 /* How many bytes from the start of the file we search for the header. */ #define PUPA_MB_SEARCH 8192 /* The magic field should contain this. */ #define PUPA_MB_MAGIC 0x1BADB002 /* This should be in %eax. */ #define PUPA_MB_MAGIC2 0x2BADB002 /* The bits in the required part of flags field we don't support. */ #define PUPA_MB_UNSUPPORTED 0x0000fffc /* Alignment of multiboot modules. */ #define PUPA_MB_MOD_ALIGN 0x00001000 /* * Flags set in the 'flags' member of the multiboot header. */ /* Align all boot modules on i386 page (4KB) boundaries. */ #define PUPA_MB_PAGE_ALIGN 0x00000001 /* Must pass memory information to OS. */ #define PUPA_MB_MEMORY_INFO 0x00000002 /* Must pass video information to OS. */ #define PUPA_MB_VIDEO_MODE 0x00000004 /* This flag indicates the use of the address fields in the header. */ #define PUPA_MB_AOUT_KLUDGE 0x00010000 /* * Flags to be set in the 'flags' member of the multiboot info structure. */ /* is there basic lower/upper memory information? */ #define PUPA_MB_INFO_MEMORY 0x00000001 /* is there a boot device set? */ #define PUPA_MB_INFO_BOOTDEV 0x00000002 /* is the command-line defined? */ #define PUPA_MB_INFO_CMDLINE 0x00000004 /* are there modules to do something with? */ #define PUPA_MB_INFO_MODS 0x00000008 /* These next two are mutually exclusive */ /* is there a symbol table loaded? */ #define PUPA_MB_INFO_AOUT_SYMS 0x00000010 /* is there an ELF section header table? */ #define PUPA_MB_INFO_ELF_SHDR 0x00000020 /* is there a full memory map? */ #define PUPA_MB_INFO_MEM_MAP 0x00000040 /* Is there drive info? */ #define PUPA_MB_INFO_DRIVE_INFO 0x00000080 /* Is there a config table? */ #define PUPA_MB_INFO_CONFIG_TABLE 0x00000100 /* Is there a boot loader name? */ #define PUPA_MB_INFO_BOOT_LOADER_NAME 0x00000200 /* Is there a APM table? */ #define PUPA_MB_INFO_APM_TABLE 0x00000400 /* Is there video information? */ #define PUPA_MB_INFO_VIDEO_INFO 0x00000800 #ifndef ASM_FILE #include struct pupa_multiboot_header { /* Must be PUPA_MB_MAGIC - see above. */ pupa_uint32_t magic; /* Feature flags. */ pupa_uint32_t flags; /* The above fields plus this one must equal 0 mod 2^32. */ pupa_uint32_t checksum; /* These are only valid if PUPA_MB_AOUT_KLUDGE is set. */ pupa_uint32_t header_addr; pupa_uint32_t load_addr; pupa_uint32_t load_end_addr; pupa_uint32_t bss_end_addr; pupa_uint32_t entry_addr; /* These are only valid if PUPA_MB_VIDEO_MODE is set. */ pupa_uint32_t mode_type; pupa_uint32_t width; pupa_uint32_t height; pupa_uint32_t depth; }; struct pupa_multiboot_info { /* MultiBoot info version number */ pupa_uint32_t flags; /* Available memory from BIOS */ pupa_uint32_t mem_lower; pupa_uint32_t mem_upper; /* "root" partition */ pupa_uint32_t boot_device; /* Kernel command line */ pupa_uint32_t cmdline; /* Boot-Module list */ pupa_uint32_t mods_count; pupa_uint32_t mods_addr; pupa_uint32_t syms[4]; /* Memory Mapping buffer */ pupa_uint32_t mmap_length; pupa_uint32_t mmap_addr; /* Drive Info buffer */ pupa_uint32_t drives_length; pupa_uint32_t drives_addr; /* ROM configuration table */ pupa_uint32_t config_table; /* Boot Loader Name */ pupa_uint32_t boot_loader_name; /* APM table */ pupa_uint32_t apm_table; /* Video */ pupa_uint32_t vbe_control_info; pupa_uint32_t vbe_mode_info; pupa_uint16_t vbe_mode; pupa_uint16_t vbe_interface_seg; pupa_uint16_t vbe_interface_off; pupa_uint16_t vbe_interface_len; }; struct pupa_mod_list { /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ pupa_uint32_t mod_start; pupa_uint32_t mod_end; /* Module command line */ pupa_uint32_t cmdline; /* padding to take it to 16 bytes (must be zero) */ pupa_uint32_t pad; }; #endif /* ! ASM_FILE */ #endif /* ! PUPA_MULTIBOOT_MACHINE_HEADER */