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 #include <linux/ioport.h>
  16
  17 #define HIGH_MEMORY     (1024*1024)
  18
  19 #ifndef __ASSEMBLY__
  20
  21 extern struct e820map e820;
  22 extern void update_e820(void);
  23
  24 extern int e820_all_mapped(unsigned long start, unsigned long end,
  25                            unsigned type);
  26 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
  27 extern void find_max_pfn(void);
  28 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
  29 extern void add_memory_region(unsigned long long start,
  30                               unsigned long long size, int type);
  31 extern void update_memory_range(u64 start, u64 size, unsigned old_type,
  32                                 unsigned new_type);
  33 extern void e820_register_memory(void);
  34 extern void limit_regions(unsigned long long size);
  35 extern void print_memory_map(char *who);
  36 extern void init_iomem_resources(struct resource *code_resource,
  37                             struct resource *data_resource,
  38                             struct resource *bss_resource);
  39
  40 #if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
  41 extern void e820_mark_nosave_regions(void);
  42 #else
  43 static inline void e820_mark_nosave_regions(void)
  44 {
  45 }
  46 #endif
  47
  48
  49 #endif/*!__ASSEMBLY__*/
  50 #endif/*__E820_HEADER*/