blob: 395077aba583000b5a22fe55f6dad22b04938c48 (
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
49
|
/*
* structures and definitions for the int 15, ax=e820 memory map
* scheme.
*
* In a nutshell, arch/i386/boot/setup.S populates a scratch table
* in the empty_zero_block that contains a list of usable address/size
* duples. In arch/i386/kernel/setup.c, this information is
* transferred into the e820map, and in arch/i386/mm/init.c, that
* new information is used to mark pages reserved or not.
*
*/
#ifndef __E820_HEADER
#define __E820_HEADER
#define E820MAP 0x2d0 /* our map */
#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define HIGH_MEMORY (1024*1024)
#ifndef __ASSEMBLY__
struct e820map {
int nr_map;
struct e820entry {
unsigned long long addr; /* start of memory segment */
unsigned long long size; /* size of memory segment */
unsigned long type; /* type of memory segment */
} map[E820MAX];
};
extern struct e820map e820;
extern int e820_all_mapped(unsigned long start, unsigned long end,
unsigned type);
extern void find_max_pfn(void);
extern void register_bootmem_low_pages(unsigned long max_low_pfn);
extern void register_memory(void);
extern void limit_regions(unsigned long long size);
extern void print_memory_map(char *who);
#endif/*!__ASSEMBLY__*/
#endif/*__E820_HEADER*/
|
