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asm-x86
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e820_64.h

e820_64.h 2.1 KB
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  1. /*
    2. 

  2.  * structures and definitions for the int 15, ax=e820 memory map
    3. 

  3.  * scheme.
    4. 

  4.  *
    5. 

  5.  * In a nutshell, setup.S populates a scratch table in the
    6. 

  6.  * empty_zero_block that contains a list of usable address/size
    7. 

  7.  * duples.  setup.c, this information is transferred into the e820map,
    8. 

  8.  * and in init.c/numa.c, that new information is used to mark pages
    9. 

  9.  * reserved or not.
    10. 

  10.  */
    11. 

  11. #ifndef __E820_HEADER
    12. 

  12. #define __E820_HEADER
    13. 

  13. 

  14. #include <linux/ioport.h>
    15. 

  15. 

  16. #ifndef __ASSEMBLY__
    17. 

  17. extern unsigned long find_e820_area(unsigned long start, unsigned long end,
    18. 

  18. 				    unsigned long size, unsigned long align);
    19. 

  19. extern unsigned long find_e820_area_size(unsigned long start,
    20. 

  20. 					 unsigned long *sizep,
    21. 

  21. 					 unsigned long align);
    22. 

  22. extern void add_memory_region(unsigned long start, unsigned long size,
    23. 

  23. 			      int type);
    24. 

  24. extern void update_memory_range(u64 start, u64 size, unsigned old_type,
    25. 

  25. 				unsigned new_type);
    26. 

  26. extern void setup_memory_region(void);
    27. 

  27. extern void contig_e820_setup(void);
    28. 

  28. extern unsigned long e820_end_of_ram(void);
    29. 

  29. extern void e820_reserve_resources(void);
    30. 

  30. extern void e820_mark_nosave_regions(void);
    31. 

  31. extern int e820_any_mapped(unsigned long start, unsigned long end,
    32. 

  32. 			   unsigned type);
    33. 

  33. extern int e820_all_mapped(unsigned long start, unsigned long end,
    34. 

  34. 			   unsigned type);
    35. 

  35. extern int e820_any_non_reserved(unsigned long start, unsigned long end);
    36. 

  36. extern int is_memory_any_valid(unsigned long start, unsigned long end);
    37. 

  37. extern int e820_all_non_reserved(unsigned long start, unsigned long end);
    38. 

  38. extern int is_memory_all_valid(unsigned long start, unsigned long end);
    39. 

  39. extern unsigned long e820_hole_size(unsigned long start, unsigned long end);
    40. 

  40. 

  41. extern void e820_setup_gap(void);
    42. 

  42. extern void e820_register_active_regions(int nid, unsigned long start_pfn,
    43. 

  43. 					 unsigned long end_pfn);
    44. 

  44. 

  45. extern void finish_e820_parsing(void);
    46. 

  46. 

  47. extern struct e820map e820;
    48. 

  48. extern void update_e820(void);
    49. 

  49. 

  50. extern void reserve_early(unsigned long start, unsigned long end, char *name);
    51. 

  51. extern void free_early(unsigned long start, unsigned long end);
    52. 

  52. extern void early_res_to_bootmem(unsigned long start, unsigned long end);
    53. 

  53. 

  54. #endif/*!__ASSEMBLY__*/
    55. 

  55. 

  56. #endif/*__E820_HEADER*/
    57.