c32ee8c9a8
* include/multiboot2.h (struct multiboot_header): Add `flags' member as
per specification.
* loader/multiboot2.c (grub_multiboot2): Fix Multiboot2 header check.
* loader/multiboot_loader.c (find_multi_boot2_header): New function
(based on find_multi_boot1_header).
(grub_rescue_cmd_multiboot_loader): Check for Multiboot2 header,
using find_multi_boot2_header(), and abort if neither Multiboot or
Multiboot headers were found.
108 lines
2.5 KiB
C
108 lines
2.5 KiB
C
/* multiboot2.h - multiboot 2 header file. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef MULTIBOOT2_HEADER
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#define MULTIBOOT2_HEADER 1
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/* How many bytes from the start of the file we search for the header. */
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#define MULTIBOOT2_HEADER_SEARCH 8192
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/* The magic field should contain this. */
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#define MULTIBOOT2_HEADER_MAGIC 0xe85250d6
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/* Passed from the bootloader to the kernel. */
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#define MULTIBOOT2_BOOTLOADER_MAGIC 0x36d76289
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/* Alignment of multiboot modules. */
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#define MULTIBOOT2_MOD_ALIGN 0x00001000
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#ifndef ASM_FILE
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#include "stdint.h"
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/* XXX not portable? */
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#if __WORDSIZE == 64
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typedef uint64_t multiboot_word;
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#else
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typedef uint32_t multiboot_word;
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#endif
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struct multiboot_header
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{
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uint32_t magic;
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uint32_t flags;
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};
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struct multiboot_tag_header
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{
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uint32_t key;
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uint32_t len;
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};
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#define MULTIBOOT2_TAG_RESERVED1 0
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#define MULTIBOOT2_TAG_RESERVED2 (~0)
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#define MULTIBOOT2_TAG_START 1
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struct multiboot_tag_start
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{
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struct multiboot_tag_header header;
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multiboot_word size; /* Total size of all multiboot tags. */
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};
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#define MULTIBOOT2_TAG_NAME 2
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struct multiboot_tag_name
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{
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struct multiboot_tag_header header;
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char name[1];
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};
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#define MULTIBOOT2_TAG_MODULE 3
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struct multiboot_tag_module
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{
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struct multiboot_tag_header header;
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multiboot_word addr;
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multiboot_word size;
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char type[36];
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char cmdline[1];
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};
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#define MULTIBOOT2_TAG_MEMORY 4
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struct multiboot_tag_memory
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{
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struct multiboot_tag_header header;
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multiboot_word addr;
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multiboot_word size;
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multiboot_word type;
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};
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#define MULTIBOOT2_TAG_UNUSED 5
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struct multiboot_tag_unused
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{
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struct multiboot_tag_header header;
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};
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#define MULTIBOOT2_TAG_END 0xffff
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struct multiboot_tag_end
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{
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struct multiboot_tag_header header;
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};
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#endif /* ! ASM_FILE */
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#endif /* ! MULTIBOOT2_HEADER */
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