dbb475a441
* conf/i386-ieee1275.rmk (kernel_elf_SOURCES): Add `machine/loader.h'
and `machine/memory.h'.
(pkglib_MODULES): Add `multiboot.mod' and `_multiboot.mod'.
(_multiboot_mod_SOURCES): New variable.
(_multiboot_mod_CFLAGS): Likewise.
(_multiboot_mod_LDFLAGS): Likewise.
(multiboot_mod_SOURCES): Likewise.
(multiboot_mod_CFLAGS): Likewise.
(multiboot_mod_LDFLAGS): Likewise.
* include/grub/i386/ieee1275/loader.h: New file.
* include/grub/i386/ieee1275/machine.h: Likewise.
* include/grub/i386/ieee1275/memory.h: Likewise.
* include/grub/i386/pc/init.h (grub_os_area_addr): Remove (redundant)
variable declaration.
(grub_os_area_size): Likewise.
* kern/i386/ieee1275/init.c (grub_os_area_addr, grub_os_area_size)
(grub_lower_mem, grub_upper_mem): New variables.
(grub_stop_floppy): New function (just to make
grub_multiboot2_real_boot() happy).
* kern/i386/ieee1275/startup.S: Include `<grub/machine/memory.h>',
`<grub/cpu/linux.h>', `<multiboot.h>' and `<multiboot2.h>'.
(grub_stop): New function.
Include `"../realmode.S"' and `"../loader.S"'.
* loader/multiboot_loader.c: Include `<grub/machine/machine.h>'.
Replace `__i386__' #ifdefs with `GRUB_MACHINE_PCBIOS'.
* loader/powerpc/ieee1275/multiboot2.c (grub_mb2_arch_boot): On i386,
rely on grub_multiboot2_real_boot() for final boot.
125 lines
3.4 KiB
C
125 lines
3.4 KiB
C
/* multiboot.c - boot a multiboot 2 OS image. */
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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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#include <multiboot2.h>
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#include <grub/loader.h>
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#include <grub/ieee1275/ieee1275.h>
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#include <grub/multiboot2.h>
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#include <grub/err.h>
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#include <grub/elf.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/machine/kernel.h>
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typedef void (*kernel_entry_t) (unsigned long, void *, int (void *),
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unsigned long, unsigned long);
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/* Claim the memory occupied by the multiboot kernel. */
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grub_err_t
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grub_mb2_arch_elf32_hook (Elf32_Phdr *phdr, UNUSED grub_addr_t *addr)
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{
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int rc;
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rc = grub_claimmap (phdr->p_paddr, phdr->p_memsz);
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if (rc)
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return grub_error(GRUB_ERR_OUT_OF_MEMORY, "Couldn't claim %x - %x",
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phdr->p_paddr, phdr->p_paddr + phdr->p_memsz);
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grub_dprintf ("loader", "Loading segment at 0x%x - 0x%x\n", phdr->p_paddr,
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phdr->p_paddr + phdr->p_memsz);
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return GRUB_ERR_NONE;
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}
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/* Claim the memory occupied by the multiboot kernel. */
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grub_err_t
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grub_mb2_arch_elf64_hook (Elf64_Phdr *phdr, UNUSED grub_addr_t *addr)
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{
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int rc;
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rc = grub_claimmap (phdr->p_paddr, phdr->p_memsz);
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if (rc)
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return grub_error(GRUB_ERR_OUT_OF_MEMORY, "Couldn't claim 0x%lx - 0x%lx",
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phdr->p_paddr, phdr->p_paddr + phdr->p_memsz);
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grub_dprintf ("loader", "Loading segment at 0x%lx - 0x%lx\n",
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(unsigned long) phdr->p_paddr,
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(unsigned long) (phdr->p_paddr + phdr->p_memsz));
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return GRUB_ERR_NONE;
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}
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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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{
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int rc;
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/* XXX Will need to map on some firmwares. */
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rc = grub_ieee1275_claim (0, size, MULTIBOOT2_MOD_ALIGN, addr);
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if (rc)
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return grub_error (GRUB_ERR_OUT_OF_MEMORY,
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"Firmware couldn't allocate memory (size 0x%lx)", size);
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return GRUB_ERR_NONE;
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}
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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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{
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grub_ieee1275_release (addr, size);
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return GRUB_ERR_NONE;
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}
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grub_err_t
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grub_mb2_tags_arch_create (void)
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{
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/* Nothing special. */
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return GRUB_ERR_NONE;
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}
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/* Release the memory we claimed from Open Firmware above. */
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void
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grub_mb2_arch_unload (struct multiboot_tag_header *tags)
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{
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struct multiboot_tag_header *tag;
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/* Free all module memory in the tag list. */
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for_each_tag (tag, tags)
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{
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if (tag->key == MULTIBOOT2_TAG_MODULE)
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{
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struct multiboot_tag_module *module =
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(struct multiboot_tag_module *) tag;
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grub_ieee1275_release (module->addr, module->size);
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}
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}
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}
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void
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grub_mb2_arch_boot (grub_addr_t entry_addr, void *tags)
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{
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kernel_entry_t entry = (kernel_entry_t) entry_addr;
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#if defined(__powerpc__)
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entry (MULTIBOOT2_BOOTLOADER_MAGIC, tags, grub_ieee1275_entry_fn, 0, 0);
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#elif defined(__i386__)
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grub_multiboot2_real_boot (entry, tags);
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#else
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#error
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#endif
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}
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