1210e168fe
* include/grub/i386/linuxbios/memory.h
(GRUB_MEMORY_MACHINE_LINUXBIOS_TABLE_ADDR): Remove macro.
* kern/i386/linuxbios/table.c (grub_linuxbios_table_iterate): Do not
receive `table_header' as argument. Instead, probe for it in the
known memory ranges where it can be present.
(grub_available_iterate): Do not pass a fixed `table_header' address
to grub_linuxbios_table_iterate().
88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007,2008 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 <grub/machine/memory.h>
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#include <grub/types.h>
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#include <grub/err.h>
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static grub_err_t
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grub_linuxbios_table_iterate (int (*hook) (grub_linuxbios_table_item_t))
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{
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grub_linuxbios_table_header_t table_header;
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grub_linuxbios_table_item_t table_item;
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auto int check_signature (grub_linuxbios_table_header_t);
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int check_signature (grub_linuxbios_table_header_t table_header)
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{
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if (! grub_memcmp (table_header->signature, "LBIO", 4))
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return 1;
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return 0;
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}
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/* Assuming table_header is aligned to its size (8 bytes). */
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for (table_header = 0x500; table_header < 0x1000; table_header++)
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if (check_signature (table_header))
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goto signature_found;
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for (table_header = 0xf0000; table_header < 0x100000; table_header++)
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if (check_signature (table_header))
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goto signature_found;
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grub_fatal ("Could not find coreboot table\n");
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signature_found:
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table_item =
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(grub_linuxbios_table_item_t) ((long) table_header +
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(long) table_header->size);
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for (; table_item->size;
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table_item = (grub_linuxbios_table_item_t) ((long) table_item + (long) table_item->size))
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if (hook (table_item))
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return 1;
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return 0;
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}
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grub_err_t
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grub_available_iterate (int (*hook) (mem_region_t))
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{
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mem_region_t mem_region;
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auto int iterate_linuxbios_table (grub_linuxbios_table_item_t);
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int iterate_linuxbios_table (grub_linuxbios_table_item_t table_item)
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{
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if (table_item->tag != GRUB_LINUXBIOS_MEMBER_MEMORY)
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return 0;
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mem_region =
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(mem_region_t) ((long) table_item +
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sizeof (struct grub_linuxbios_table_item));
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for (; (long) mem_region < (long) table_item + (long) table_item->size;
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mem_region++)
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if (hook (mem_region))
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return 1;
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return 0;
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}
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grub_linuxbios_table_iterate (iterate_linuxbios_table);
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return 0;
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}
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