aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-x86/e820_64.h
blob: 8cba49da4795a119f285d962f94cf4e06109e041 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/*
 * structures and definitions for the int 15, ax=e820 memory map
 * scheme.
 *
 * In a nutshell, setup.S populates a scratch table in the
 * empty_zero_block that contains a list of usable address/size
 * duples.  setup.c, this information is transferred into the e820map,
 * and in init.c/numa.c, that new information is used to mark pages
 * reserved or not.
 */
#ifndef __E820_HEADER
#define __E820_HEADER

#include <linux/ioport.h>

#ifndef __ASSEMBLY__
extern unsigned long find_e820_area(unsigned long start, unsigned long end, 
				    unsigned size);
extern void add_memory_region(unsigned long start, unsigned long size, 
			      int type);
extern void setup_memory_region(void);
extern void contig_e820_setup(void); 
extern unsigned long e820_end_of_ram(void);
extern void e820_reserve_resources(struct resource *code_resource,
		struct resource *data_resource, struct resource *bss_resource);
extern void e820_mark_nosave_regions(void);
extern int e820_any_mapped(unsigned long start, unsigned long end, unsigned type);
extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type);
extern int e820_any_non_reserved(unsigned long start, unsigned long end);
extern int is_memory_any_valid(unsigned long start, unsigned long end);
extern int e820_all_non_reserved(unsigned long start, unsigned long end);
extern int is_memory_all_valid(unsigned long start, unsigned long end);
extern unsigned long e820_hole_size(unsigned long start, unsigned long end);

extern void e820_setup_gap(void);
extern void e820_register_active_regions(int nid,
				unsigned long start_pfn, unsigned long end_pfn);

extern void finish_e820_parsing(void);

extern struct e820map e820;

extern unsigned ebda_addr, ebda_size;
extern unsigned long nodemap_addr, nodemap_size;

#endif/*!__ASSEMBLY__*/

#endif/*__E820_HEADER*/