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  1. #ifndef _ASM_X86_E820_H
  2. #define _ASM_X86_E820_H
  3.  
  4. #ifdef CONFIG_EFI
  5. #include <linux/numa.h>
  6. #define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
  7. #else   /* ! CONFIG_EFI */
  8. #define E820_X_MAX E820MAX
  9. #endif
  10. #include <uapi/asm/e820.h>
  11. #ifndef __ASSEMBLY__
  12. /* see comment in arch/x86/kernel/e820.c */
  13. extern struct e820map e820;
  14. extern struct e820map e820_saved;
  15.  
  16. extern unsigned long pci_mem_start;
  17. extern int e820_any_mapped(u64 start, u64 end, unsigned type);
  18. extern int e820_all_mapped(u64 start, u64 end, unsigned type);
  19. extern void e820_add_region(u64 start, u64 size, int type);
  20. extern void e820_print_map(char *who);
  21. extern int
  22. sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
  23. extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
  24.                                unsigned new_type);
  25. extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
  26.                              int checktype);
  27. extern void update_e820(void);
  28. extern void e820_setup_gap(void);
  29. extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
  30.                         unsigned long start_addr, unsigned long long end_addr);
  31. struct setup_data;
  32. extern void parse_e820_ext(u64 phys_addr, u32 data_len);
  33.  
  34. #if defined(CONFIG_X86_64) || \
  35.         (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
  36. extern void e820_mark_nosave_regions(unsigned long limit_pfn);
  37. #else
  38. static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
  39. {
  40. }
  41. #endif
  42.  
  43. extern unsigned long e820_end_of_ram_pfn(void);
  44. extern unsigned long e820_end_of_low_ram_pfn(void);
  45. extern u64 early_reserve_e820(u64 sizet, u64 align);
  46.  
  47. void memblock_x86_fill(void);
  48. void memblock_find_dma_reserve(void);
  49.  
  50. extern void finish_e820_parsing(void);
  51. extern void e820_reserve_resources(void);
  52. extern void e820_reserve_resources_late(void);
  53. extern void setup_memory_map(void);
  54. extern char *default_machine_specific_memory_setup(void);
  55.  
  56. /*
  57.  * Returns true iff the specified range [s,e) is completely contained inside
  58.  * the ISA region.
  59.  */
  60. static inline bool is_ISA_range(u64 s, u64 e)
  61. {
  62.         return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
  63. }
  64.  
  65. #endif /* __ASSEMBLY__ */
  66. #include <linux/ioport.h>
  67.  
  68. #define HIGH_MEMORY     (1024*1024)
  69. #endif /* _ASM_X86_E820_H */
  70.