diff options
Diffstat (limited to 'contrib/syslinux-4.02/com32/mboot/mb_info.h')
| -rw-r--r-- | contrib/syslinux-4.02/com32/mboot/mb_info.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/mboot/mb_info.h b/contrib/syslinux-4.02/com32/mboot/mb_info.h new file mode 100644 index 0000000..597a738 --- /dev/null +++ b/contrib/syslinux-4.02/com32/mboot/mb_info.h @@ -0,0 +1,207 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2000 Free Software Foundation, Inc. + * + * 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. + */ + +/* + * The structure type "mod_list" is used by the "multiboot_info" structure. + */ + +#ifndef MBOOT_MB_INFO_H +#define MBOOT_MB_INFO_H + +#include <inttypes.h> + +struct mod_list { + /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */ + uint32_t mod_start; + uint32_t mod_end; + + /* Module command line */ + uint32_t cmdline; + + /* padding to take it to 16 bytes (must be zero) */ + uint32_t pad; +}; + +/* + * INT-15, AX=E820 style "AddressRangeDescriptor" + * ...with a "size" parameter on the front which is the structure size - 4, + * pointing to the next one, up until the full buffer length of the memory + * map has been reached. + */ + +struct AddrRangeDesc { + uint32_t size; + uint64_t BaseAddr; + uint64_t Length; + uint32_t Type; + /* unspecified optional padding... */ +} __attribute__ ((packed)); + +/* usable memory "Type", all others are reserved. */ +#define MB_ARD_MEMORY 1 + +/* Drive Info structure. */ +struct drive_info { + /* The size of this structure. */ + uint32_t size; + + /* The BIOS drive number. */ + uint8_t drive_number; + + /* The access mode (see below). */ + uint8_t drive_mode; + + /* The BIOS geometry. */ + uint16_t drive_cylinders; + uint8_t drive_heads; + uint8_t drive_sectors; + + /* The array of I/O ports used for the drive. */ + uint16_t drive_ports[0]; +}; + +/* Drive Mode. */ +#define MB_DI_CHS_MODE 0 +#define MB_DI_LBA_MODE 1 + +/* APM BIOS info. */ +struct apm_info { + uint16_t version; + uint16_t cseg; + uint32_t offset; + uint16_t cseg_16; + uint16_t dseg_16; + uint16_t cseg_len; + uint16_t cseg_16_len; + uint16_t dseg_16_len; +}; + +/* + * MultiBoot Info description + * + * This is the struct passed to the boot image. This is done by placing + * its address in the EAX register. + */ + +struct multiboot_info { + /* MultiBoot info version number */ + uint32_t flags; + + /* Available memory from BIOS */ + uint32_t mem_lower; + uint32_t mem_upper; + + /* "root" partition */ + uint32_t boot_device; + + /* Kernel command line */ + uint32_t cmdline; + + /* Boot-Module list */ + uint32_t mods_count; + uint32_t mods_addr; + + union { + struct { + /* (a.out) Kernel symbol table info */ + uint32_t tabsize; + uint32_t strsize; + uint32_t addr; + uint32_t pad; + } a; + struct { + /* (ELF) Kernel section header table */ + uint32_t num; + uint32_t size; + uint32_t addr; + uint32_t shndx; + } e; + } syms; + + /* Memory Mapping buffer */ + uint32_t mmap_length; + uint32_t mmap_addr; + + /* Drive Info buffer */ + uint32_t drives_length; + uint32_t drives_addr; + + /* ROM configuration table */ + uint32_t config_table; + + /* Boot Loader Name */ + uint32_t boot_loader_name; + + /* APM table */ + uint32_t apm_table; + + /* Video */ + uint32_t vbe_control_info; + uint32_t vbe_mode_info; + uint16_t vbe_mode; + uint16_t vbe_interface_seg; + uint16_t vbe_interface_off; + uint16_t vbe_interface_len; +}; + +/* + * Flags to be set in the 'flags' parameter above + */ + +/* is there basic lower/upper memory information? */ +#define MB_INFO_MEMORY 0x00000001 +/* is there a boot device set? */ +#define MB_INFO_BOOTDEV 0x00000002 +/* is the command-line defined? */ +#define MB_INFO_CMDLINE 0x00000004 +/* are there modules to do something with? */ +#define MB_INFO_MODS 0x00000008 + +/* These next two are mutually exclusive */ + +/* is there a symbol table loaded? */ +#define MB_INFO_AOUT_SYMS 0x00000010 +/* is there an ELF section header table? */ +#define MB_INFO_ELF_SHDR 0x00000020 + +/* is there a full memory map? */ +#define MB_INFO_MEM_MAP 0x00000040 + +/* Is there drive info? */ +#define MB_INFO_DRIVE_INFO 0x00000080 + +/* Is there a config table? */ +#define MB_INFO_CONFIG_TABLE 0x00000100 + +/* Is there a boot loader name? */ +#define MB_INFO_BOOT_LOADER_NAME 0x00000200 + +/* Is there a APM table? */ +#define MB_INFO_APM_TABLE 0x00000400 + +/* Is there video information? */ +#define MB_INFO_VIDEO_INFO 0x00000800 + +/* + * The following value must be present in the EAX register. + */ + +#define MULTIBOOT_VALID 0x2BADB002 + +#endif /* MBOOT_MB_INFO_H */ |