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- /*
- * structures and definitions for the int 15, ax=e820 memory map
- * scheme.
- *
- * In a nutshell, arch/i386/boot/setup.S populates a scratch table
- * in the empty_zero_block that contains a list of usable address/size
- * duples. In arch/i386/kernel/setup.c, this information is
- * transferred into the e820map, and in arch/i386/mm/init.c, that
- * new information is used to mark pages reserved or not.
- *
- */
- #ifndef __E820_HEADER
- #define __E820_HEADER
- #define HIGH_MEMORY (1024*1024)
- #ifndef __ASSEMBLY__
- extern struct e820map e820;
- extern int e820_all_mapped(unsigned long start, unsigned long end,
- unsigned type);
- extern int e820_any_mapped(u64 start, u64 end, unsigned type);
- extern void find_max_pfn(void);
- extern void register_bootmem_low_pages(unsigned long max_low_pfn);
- extern void e820_register_memory(void);
- extern void limit_regions(unsigned long long size);
- extern void print_memory_map(char *who);
- #if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
- extern void e820_mark_nosave_regions(void);
- #else
- static inline void e820_mark_nosave_regions(void)
- {
- }
- #endif
- #endif/*!__ASSEMBLY__*/
- #endif/*__E820_HEADER*/
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