e5dfe7775a
for powerpc & i386-pc. This patch was more so started by Hollis Blanchard getting multiboot 2 working for powerpc and I added to it and cleaned it up. One of the ideas with this patch is to keep everything under one command for the user. So instead of having a "multiboot2" & "module2" command, I created a proxy like mechanism so that you have only one command for both multiboot 1 & 2 ... "multiboot". This is where "loader/multiboot_loader.c" comes from. I could have integrated things more but I figure the current approach will less likely break anything. So if your OS is multiboot 2 capable, the user would do the following to load it up from a grub prompt: grub> multiboot <location of kernel> <kernel args> grub> module <some image> <multiboot tag> <image arguments> grub> module <isome mage> <multiboot tag> <image arguments> grub ..... The other thing that this patch does is it begins to make the multiboot 1 code a bit more architecture agnostic so IF someone wanted to implement it on another architecture they can. A bit of file moving around and definition renaming is also apart of this patch. I have also taken the time to make sure that it does not break multiboot 1 loading on i386-pc. But mulitboot 2 may still need a little more testing and work for i386-pc. Powerpc multiboot 2 has been heavily tested and does work.
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* multiboot2.h - multiboot2 header file with grub definitions. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2005,2007 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 GRUB_MULTIBOOT2_HEADER
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#define GRUB_MULTIBOOT2_HEADER 1
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/elf.h>
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struct multiboot_tag_header;
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grub_err_t
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grub_mb2_tag_alloc (grub_addr_t *addr, int key, grub_size_t len);
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grub_err_t
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grub_mb2_tags_arch_create (void);
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void
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grub_mb2_arch_boot (grub_addr_t entry, void *tags);
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void
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grub_mb2_arch_unload (struct multiboot_tag_header *tags);
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grub_err_t
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grub_mb2_arch_elf32_hook (Elf32_Phdr *phdr, grub_addr_t *addr);
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grub_err_t
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grub_mb2_arch_elf64_hook (Elf64_Phdr *phdr, grub_addr_t *addr);
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grub_err_t
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grub_mb2_arch_module_alloc (grub_size_t size, grub_addr_t *addr);
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grub_err_t
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grub_mb2_arch_module_free (grub_addr_t addr, grub_size_t size);
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void
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grub_multiboot2 (int argc, char *argv[]);
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void
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grub_module2 (int argc, char *argv[]);
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#define for_each_tag(tag, tags) \
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for (tag = tags; \
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tag && tag->key != MULTIBOOT2_TAG_END; \
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tag = (struct multiboot_tag_header *)((char *)tag + tag->len))
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#endif /* ! GRUB_MULTIBOOT2_HEADER */
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