1 #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
11 /*
12 * Entries defined so far:
13 * - boot param structure itself
14 * - memory map
15 * - initrd (optional)
16 * - command line string
17 * - kernel code & data
18 * - crash dumping code reserved region
19 * - Kernel memory map built from EFI memory map
20 * - ELF core header
21 *
22 * More could be added if necessary
23 */
24 #define IA64_MAX_RSVD_REGIONS 9
25
26 struct rsvd_region {
27 u64 start; /* virtual address of beginning of element */
28 u64 end; /* virtual address of end of element + 1 */
29 };
30
31 extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1];
32 extern int num_rsvd_regions;
33
34 extern void find_memory (void);
35 extern void reserve_memory (void);
36 extern void find_initrd (void);
37 extern int filter_rsvd_memory (u64 start, u64 end, void *arg);
38 extern int filter_memory (u64 start, u64 end, void *arg);
39 extern unsigned long efi_memmap_init(u64 *s, u64 *e);
40 extern int find_max_min_low_pfn (u64, u64, void *);
41
42 extern unsigned long vmcore_find_descriptor_size(unsigned long address);
43 extern int reserve_elfcorehdr(u64 *start, u64 *end);
44
45 /*
46 * For rounding an address to the next IA64_GRANULE_SIZE or order
47 */
48 #define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1))
49 #define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
50
51 #ifdef CONFIG_NUMA
52 extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
53 #else
54 # define call_pernode_memory(start, len, func) (*func)(start, len, 0)
55 #endif
56
57 #define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
58
59 extern int register_active_ranges(u64 start, u64 len, int nid);
60
61 #ifdef CONFIG_VIRTUAL_MEM_MAP
62 # define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */
63 extern unsigned long VMALLOC_END;
64 extern struct page *vmem_map;
65 extern int find_largest_hole(u64 start, u64 end, void *arg);
66 extern int create_mem_map_page_table(u64 start, u64 end, void *arg);
67 extern int vmemmap_find_next_valid_pfn(int, int);
68 #else
vmemmap_find_next_valid_pfn(int node,int i)69 static inline int vmemmap_find_next_valid_pfn(int node, int i)
70 {
71 return i + 1;
72 }
73 #endif
74 #endif /* meminit_h */
75