projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | |
| 13 | ||
| 1da177e4 | 14 | #define E820MAP 0x2d0 /* our map */ |
| f9ba7053 | 15 | #define E820MAX 128 /* number of entries in E820MAP */ |
| 1da177e4 LT |
16 | #define E820NR 0x1e8 /* # entries in E820MAP */ |
| 17 | ||
| 18 | #define E820_RAM 1 | |
| 19 | #define E820_RESERVED 2 | |
| 80d2679c | 20 | #define E820_ACPI 3 |
| 1da177e4 LT |
21 | #define E820_NVS 4 |
| 22 | ||
| 1da177e4 LT |
23 | #ifndef __ASSEMBLY__ |
| 24 | struct e820entry { | |
| 25 | u64 addr; /* start of memory segment */ | |
| 26 | u64 size; /* size of memory segment */ | |
| 27 | u32 type; /* type of memory segment */ | |
| 28 | } __attribute__((packed)); | |
| 29 | ||
| 30 | struct e820map { | |
| 9c25d134 | 31 | u32 nr_map; |
| 1da177e4 LT |
32 | struct e820entry map[E820MAX]; |
| 33 | }; | |
| 34 | ||
| 35 | extern unsigned long find_e820_area(unsigned long start, unsigned long end, | |
| 36 | unsigned size); | |
| 37 | extern void add_memory_region(unsigned long start, unsigned long size, | |
| 38 | int type); | |
| 39 | extern void setup_memory_region(void); | |
| 40 | extern void contig_e820_setup(void); | |
| 41 | extern unsigned long e820_end_of_ram(void); | |
| 42 | extern void e820_reserve_resources(void); | |
| e8eff5ac | 43 | extern void e820_mark_nosave_regions(void); |
| 1da177e4 | 44 | extern void e820_print_map(char *who); |
| eee5a9fa | 45 | extern int e820_any_mapped(unsigned long start, unsigned long end, unsigned type); |
| 95222368 | 46 | extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type); |
| 53fee04f | 47 | extern unsigned long e820_hole_size(unsigned long start, unsigned long end); |
| 1da177e4 | 48 | |
| a1e97782 | 49 | extern void e820_setup_gap(void); |
| 5cb248ab MG |
50 | extern void e820_register_active_regions(int nid, |
| 51 | unsigned long start_pfn, unsigned long end_pfn); | |
| 1da177e4 | 52 | |
| 2c8c0e6b | 53 | extern void finish_e820_parsing(void); |
| 1da177e4 LT |
54 | |
| 55 | extern struct e820map e820; | |
| ac71d12c AK |
56 | |
| 57 | extern unsigned ebda_addr, ebda_size; | |
| 076422d2 | 58 | extern unsigned long nodemap_addr, nodemap_size; |
| 1da177e4 LT |
59 | #endif/*!__ASSEMBLY__*/ |
| 60 | ||
| 61 | #endif/*__E820_HEADER*/ |