| // Copyright 2016 The Fuchsia Authors |
| // Copyright (c) 2009 Corey Tabaka |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| #ifndef __PLATFORM_MULTIBOOT_H |
| #define __PLATFORM_MULTIBOOT_H |
| |
| #include <stdint.h> |
| |
| /* magic number for multiboot header */ |
| #define MULTIBOOT_HEADER_MAGIC 0x1BADB002 |
| |
| /* flags for multiboot header */ |
| #ifdef __ELF__ |
| #define MULTIBOOT_HEADER_FLAGS 0x00000003 |
| #else |
| #define MULTIBOOT_HEADER_FLAGS 0x00010003 |
| #endif |
| |
| /* magic number passed by multiboot-compliant boot loaders */ |
| #define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002 |
| |
| #ifndef ASSEMBLY |
| |
| /* multiboot header */ |
| typedef struct multiboot_header { |
| uint32_t magic; |
| uint32_t flags; |
| uint32_t checksum; |
| uint32_t header_addr; |
| uint32_t load_addr; |
| uint32_t load_end_addr; |
| uint32_t bss_end_addr; |
| uint32_t entry_addr; |
| } multiboot_header_t; |
| |
| /* symbol table for a.out */ |
| typedef struct aout_symbol_table { |
| uint32_t tabsize; |
| uint32_t strsize; |
| uint32_t addr; |
| uint32_t reserved; |
| } aout_symbol_table_t; |
| |
| /* section header table for ELF */ |
| typedef struct elf_section_header_table { |
| uint32_t num; |
| uint32_t size; |
| uint32_t addr; |
| uint32_t shndx; |
| } elf_section_header_table_t; |
| |
| /* multiboot info */ |
| typedef struct multiboot_info { |
| uint32_t flags; |
| uint32_t mem_lower; |
| uint32_t mem_upper; |
| uint32_t boot_device; |
| uint32_t cmdline; |
| uint32_t mods_count; |
| uint32_t mods_addr; |
| union { |
| aout_symbol_table_t aout_sym; |
| elf_section_header_table_t elf_sec; |
| } u; |
| uint32_t mmap_length; |
| uint32_t mmap_addr; |
| } multiboot_info_t; |
| |
| enum { |
| MB_INFO_MEM_SIZE = 0x001, |
| MB_INFO_BOOT_DEV = 0x002, |
| MB_INFO_CMD_LINE = 0x004, |
| MB_INFO_MODS = 0x008, |
| MB_INFO_SYMS = 0x010, |
| MB_INFO_SHDR = 0x020, |
| MB_INFO_MMAP = 0x040, |
| MB_INFO_DRIVES = 0x080, |
| MB_INFO_CONFIG = 0x100, |
| MB_INFO_BOOT_LOADER = 0x200, |
| MB_INFO_APM_TABLE = 0x400, |
| MB_INFO_VBE = 0x800, |
| }; |
| |
| /* module structure */ |
| typedef struct module { |
| uint32_t mod_start; |
| uint32_t mod_end; |
| uint32_t string; |
| uint32_t reserved; |
| } module_t; |
| |
| /* memory map - be careful that the offset 0 is base_addr_low without size */ |
| typedef struct memory_map { |
| uint32_t size; |
| uint32_t base_addr_low; |
| uint32_t base_addr_high; |
| uint32_t length_low; |
| uint32_t length_high; |
| uint32_t type; |
| } memory_map_t; |
| |
| /* memory map entry types */ |
| enum { |
| MB_MMAP_TYPE_AVAILABLE = 0x01, |
| MB_MMAP_TYPE_RESERVED = 0x02, |
| MB_MMAP_TYPE_ACPI_RECLAIM = 0x03, |
| MB_MMAP_TYPE_ACPI_NVS = 0x04, |
| }; |
| |
| #endif |
| |
| #endif |