ia64/xen-unstable

view linux-2.6-xen-sparse/include/asm-x86_64/mach-xen/asm/e820.h @ 11221:7c9d7fc3dce5

[HVM] Fix SMBIOS entry point copy destination.
Spotted by Xiaowei Yang <xiaowei.yang@intel.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
author kaf24@localhost.localdomain
date Sat Aug 19 12:06:36 2006 +0100 (2006-08-19)
parents 96ce5961b5eb
children 4fad820a2233
line source
1 /*
2 * structures and definitions for the int 15, ax=e820 memory map
3 * scheme.
4 *
5 * In a nutshell, setup.S populates a scratch table in the
6 * empty_zero_block that contains a list of usable address/size
7 * duples. setup.c, this information is transferred into the e820map,
8 * and in init.c/numa.c, that new information is used to mark pages
9 * reserved or not.
10 */
11 #ifndef __E820_HEADER
12 #define __E820_HEADER
14 #include <linux/mmzone.h>
16 #define E820MAP 0x2d0 /* our map */
17 #define E820MAX 128 /* number of entries in E820MAP */
18 #define E820NR 0x1e8 /* # entries in E820MAP */
20 #define E820_RAM 1
21 #define E820_RESERVED 2
22 #define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
23 #define E820_NVS 4
25 #define HIGH_MEMORY (1024*1024)
27 #define LOWMEMSIZE() (0x9f000)
29 #ifndef __ASSEMBLY__
30 struct e820entry {
31 u64 addr; /* start of memory segment */
32 u64 size; /* size of memory segment */
33 u32 type; /* type of memory segment */
34 } __attribute__((packed));
36 struct e820map {
37 int nr_map;
38 struct e820entry map[E820MAX];
39 };
41 extern unsigned long find_e820_area(unsigned long start, unsigned long end,
42 unsigned size);
43 extern void add_memory_region(unsigned long start, unsigned long size,
44 int type);
45 extern void setup_memory_region(void);
46 extern void contig_e820_setup(void);
47 extern unsigned long e820_end_of_ram(void);
48 extern void e820_reserve_resources(struct e820entry *e820, int nr_map);
49 extern void e820_print_map(char *who);
50 extern int e820_mapped(unsigned long start, unsigned long end, unsigned type);
52 extern void e820_bootmem_free(pg_data_t *pgdat, unsigned long start,unsigned long end);
53 extern void e820_setup_gap(struct e820entry *e820, int nr_map);
54 extern unsigned long e820_hole_size(unsigned long start_pfn,
55 unsigned long end_pfn);
57 extern void __init parse_memopt(char *p, char **end);
58 extern void __init parse_memmapopt(char *p, char **end);
60 extern struct e820map e820;
61 #endif/*!__ASSEMBLY__*/
63 #endif/*__E820_HEADER*/