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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef meminit_h
2#define meminit_h
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 */
9
10#include <linux/config.h>
11
12/*
13 * Entries defined so far:
14 * - boot param structure itself
15 * - memory map
16 * - initrd (optional)
17 * - command line string
18 * - kernel code & data
19 *
20 * More could be added if necessary
21 */
22#define IA64_MAX_RSVD_REGIONS 5
23
24struct rsvd_region {
25 unsigned long start; /* virtual address of beginning of element */
26 unsigned long end; /* virtual address of end of element + 1 */
27};
28
29extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
30extern int num_rsvd_regions;
31
32extern void find_memory (void);
33extern void reserve_memory (void);
34extern void find_initrd (void);
35extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg);
36
37/*
38 * For rounding an address to the next IA64_GRANULE_SIZE or order
39 */
40#define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1))
41#define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
42#define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1))
43
44#ifdef CONFIG_DISCONTIGMEM
45 extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
46#else
47# define call_pernode_memory(start, len, func) (*func)(start, len, 0)
48#endif
49
50#define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
51
52#ifdef CONFIG_VIRTUAL_MEM_MAP
53# define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */
54 extern unsigned long vmalloc_end;
55 extern struct page *vmem_map;
56 extern int find_largest_hole (u64 start, u64 end, void *arg);
57 extern int create_mem_map_page_table (u64 start, u64 end, void *arg);
58#endif
59
60#endif /* meminit_h */