diff options
Diffstat (limited to 'include/asm-ia64/meminit.h')
| -rw-r--r-- | include/asm-ia64/meminit.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h new file mode 100644 index 000000000000..1590dc65b30b --- /dev/null +++ b/include/asm-ia64/meminit.h @@ -0,0 +1,60 @@ +#ifndef meminit_h +#define meminit_h + +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#include <linux/config.h> + +/* + * Entries defined so far: + * - boot param structure itself + * - memory map + * - initrd (optional) + * - command line string + * - kernel code & data + * + * More could be added if necessary + */ +#define IA64_MAX_RSVD_REGIONS 5 + +struct rsvd_region { + unsigned long start; /* virtual address of beginning of element */ + unsigned long end; /* virtual address of end of element + 1 */ +}; + +extern struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1]; +extern int num_rsvd_regions; + +extern void find_memory (void); +extern void reserve_memory (void); +extern void find_initrd (void); +extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg); + +/* + * For rounding an address to the next IA64_GRANULE_SIZE or order + */ +#define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1)) +#define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1)) +#define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1)) + +#ifdef CONFIG_DISCONTIGMEM + extern void call_pernode_memory (unsigned long start, unsigned long len, void *func); +#else +# define call_pernode_memory(start, len, func) (*func)(start, len, 0) +#endif + +#define IGNORE_PFN0 1 /* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */ + +#ifdef CONFIG_VIRTUAL_MEM_MAP +# define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */ + extern unsigned long vmalloc_end; + extern struct page *vmem_map; + extern int find_largest_hole (u64 start, u64 end, void *arg); + extern int create_mem_map_page_table (u64 start, u64 end, void *arg); +#endif + +#endif /* meminit_h */ |