include/asm-x86/e820_32.h

   1 /*
   2  * structures and definitions for the int 15, ax=e820 memory map
   3  * scheme.
   4  *
   5  * In a nutshell, arch/i386/boot/setup.S populates a scratch table
   6  * in the empty_zero_block that contains a list of usable address/size
   7  * duples.   In arch/i386/kernel/setup.c, this information is
   8  * transferred into the e820map, and in arch/i386/mm/init.c, that
   9  * new information is used to mark pages reserved or not.
  10  *
  11  */
  12 #ifndef __E820_HEADER
  13 #define __E820_HEADER
  14
  15 #define HIGH_MEMORY     (1024*1024)
  16
  17 #ifndef __ASSEMBLY__
  18
  19 extern struct e820map e820;
  20
  21 extern int e820_all_mapped(unsigned long start, unsigned long end,
  22                            unsigned type);
  23 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
  24 extern void find_max_pfn(void);
  25 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
  26 extern void e820_register_memory(void);
  27 extern void limit_regions(unsigned long long size);
  28 extern void print_memory_map(char *who);
  29
  30 #if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
  31 extern void e820_mark_nosave_regions(void);
  32 #else
  33 static inline void e820_mark_nosave_regions(void)
  34 {
  35 }
  36 #endif
  37
  38 #endif/*!__ASSEMBLY__*/
  39 #endif/*__E820_HEADER*/