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 11 /* 12 * Entries defined so far: 13 * - boot param structure itself 14 * - memory map 15 * - initrd (optional) 16 * - command line string 17 * - kernel code & data 18 * - crash dumping code reserved region 19 * - Kernel memory map built from EFI memory map 20 * - ELF core header 21 * 22 * More could be added if necessary 23 */ 24 #define IA64_MAX_RSVD_REGIONS 8 25 26 struct rsvd_region { 27 unsigned long start; /* virtual address of beginning of element */ 28 unsigned long end; /* virtual address of end of element + 1 */ 29 }; 30 31 extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1]; 32 extern int num_rsvd_regions; 33 34 extern void find_memory (void); 35 extern void reserve_memory (void); 36 extern void find_initrd (void); 37 extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg); 38 extern int filter_memory (unsigned long start, unsigned long end, void *arg); 39 extern unsigned long efi_memmap_init(unsigned long *s, unsigned long *e); 40 extern int find_max_min_low_pfn (unsigned long , unsigned long, void *); 41 42 extern unsigned long vmcore_find_descriptor_size(unsigned long address); 43 extern int reserve_elfcorehdr(unsigned long *start, unsigned long *end); 44 45 /* 46 * For rounding an address to the next IA64_GRANULE_SIZE or order 47 */ 48 #define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1)) 49 #define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1)) 50 #define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1)) 51 52 #ifdef CONFIG_NUMA 53 extern void call_pernode_memory (unsigned long start, unsigned long len, void *func); 54 #else 55 # define call_pernode_memory(start, len, func) (*func)(start, len, 0) 56 #endif 57 58 #define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */ 59 60 extern int register_active_ranges(u64 start, u64 len, int nid); 61 62 #ifdef CONFIG_VIRTUAL_MEM_MAP 63 # define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */ 64 extern unsigned long vmalloc_end; 65 extern struct page *vmem_map; 66 extern int find_largest_hole (u64 start, u64 end, void *arg); 67 extern int create_mem_map_page_table (u64 start, u64 end, void *arg); 68 extern int vmemmap_find_next_valid_pfn(int, int); 69 #else 70 static inline int vmemmap_find_next_valid_pfn(int node, int i) 71 { 72 return i + 1; 73 } 74 #endif 75 #endif /* meminit_h */ 76