2 * GRUB -- GRand Unified Bootloader
3 * Copyright (C) 2009 Free Software Foundation, Inc.
5 * GRUB is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * GRUB is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
19 #ifndef GRUB_MEMORY_MACHINE_HEADER
20 #define GRUB_MEMORY_MACHINE_HEADER 1
23 #include <grub/types.h>
25 /* The term "page" in UEFI refers only to a 4 KiB-aligned 4 KiB size region of
26 memory. It is not concerned with underlying translation management concepts,
27 but only used as the granule for memory allocations. */
28 #define GRUB_EFI_PAGE_SHIFT 12
29 #define GRUB_EFI_PAGE_SIZE (1 << GRUB_EFI_PAGE_SHIFT)
30 #define GRUB_EFI_BYTES_TO_PAGES(bytes) (((bytes) + 0xfff) >> GRUB_EFI_PAGE_SHIFT)
32 #define GRUB_MMAP_REGISTER_BY_FIRMWARE 1
34 grub_err_t grub_machine_mmap_register (grub_uint64_t start, grub_uint64_t size,
35 int type, int handle);
36 grub_err_t grub_machine_mmap_unregister (int handle);
38 #endif /* ! GRUB_MEMORY_MACHINE_HEADER */