1 /* ----------------------------------------------------------------------- *
2 *
3 * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved
4 * Copyright 2009 Intel Corporation; author: H. Peter Anvin
5 *
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software and associated documentation
8 * files (the "Software"), to deal in the Software without
9 * restriction, including without limitation the rights to use,
10 * copy, modify, merge, publish, distribute, sublicense, and/or
11 * sell copies of the Software, and to permit persons to whom
12 * the Software is furnished to do so, subject to the following
13 * conditions:
14 *
15 * The above copyright notice and this permission notice shall
16 * be included in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
20 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
22 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
23 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * ----------------------------------------------------------------------- */
28
29 /*
30 * memmap.c
31 *
32 * Create initial memory map for "shuffle and boot" operation
33 */
34
35 #include <assert.h>
36 #include <stdbool.h>
37 #include <stdlib.h>
38 #include <inttypes.h>
39
40 #include <syslinux/memscan.h>
41 #include <syslinux/movebits.h>
42
syslinux_memory_map_callback(void * map,addr_t start,addr_t len,enum syslinux_memmap_types type)43 static int syslinux_memory_map_callback(void *map, addr_t start, addr_t len,
44 enum syslinux_memmap_types type)
45 {
46 struct syslinux_memmap **mmap = map;
47 return syslinux_add_memmap(mmap, start, len, type);
48 }
49
syslinux_memory_map(void)50 struct syslinux_memmap *syslinux_memory_map(void)
51 {
52 struct syslinux_memmap *mmap;
53
54 mmap = syslinux_init_memmap();
55 if (!mmap)
56 return NULL;
57
58 if (syslinux_scan_memory(syslinux_memory_map_callback, &mmap)) {
59 syslinux_free_memmap(mmap);
60 return NULL;
61 }
62
63 return mmap;
64 }
65