projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | #include <linux/config.h> | |
| 11 | ||
| 12 | /* | |
| 13 | * Entries defined so far: | |
| 14 | * - boot param structure itself | |
| 15 | * - memory map | |
| 16 | * - initrd (optional) | |
| 17 | * - command line string | |
| 18 | * - kernel code & data | |
| 19 | * | |
| 20 | * More could be added if necessary | |
| 21 | */ | |
| 22 | #define IA64_MAX_RSVD_REGIONS 5 | |
| 23 | ||
| 24 | struct rsvd_region { | |
| 25 | unsigned long start; /* virtual address of beginning of element */ | |
| 26 | unsigned long end; /* virtual address of end of element + 1 */ | |
| 27 | }; | |
| 28 | ||
| 29 | extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1]; | |
| 30 | extern int num_rsvd_regions; | |
| 31 | ||
| 32 | extern void find_memory (void); | |
| 33 | extern void reserve_memory (void); | |
| 34 | extern void find_initrd (void); | |
| 35 | extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg); | |
| 36 | ||
| 37 | /* | |
| 38 | * For rounding an address to the next IA64_GRANULE_SIZE or order | |
| 39 | */ | |
| 40 | #define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1)) | |
| 41 | #define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1)) | |
| 42 | #define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1)) | |
| 43 | ||
| 44 | #ifdef CONFIG_DISCONTIGMEM | |
| 45 | extern void call_pernode_memory (unsigned long start, unsigned long len, void *func); | |
| 46 | #else | |
| 47 | # define call_pernode_memory(start, len, func) (*func)(start, len, 0) | |
| 48 | #endif | |
| 49 | ||
| 50 | #define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */ | |
| 51 | ||
| 52 | #ifdef CONFIG_VIRTUAL_MEM_MAP | |
| 53 | # define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */ | |
| 54 | extern unsigned long vmalloc_end; | |
| 55 | extern struct page *vmem_map; | |
| 56 | extern int find_largest_hole (u64 start, u64 end, void *arg); | |
| 57 | extern int create_mem_map_page_table (u64 start, u64 end, void *arg); | |
| 58 | #endif | |
| 59 | ||
| 60 | #endif /* meminit_h */ |