text: #ifndef _ASM_X86_E820_H
  #define _ASM_X86_E820_H
  
  #define E820MAX		128	/* number of entries in E820MAP */
  
  #define E820_RAM	1
  #define E820_RESERVED	2
  #define E820_ACPI	3
  #define E820_NVS	4
  #define E820_UNUSABLE	5
  
  #ifndef __ASSEMBLY__
  #include <linux/types.h>
  
  struct e820entry {
  	__u64 addr;	/* start of memory segment */
  	__u64 size;	/* size of memory segment */
  	__u32 type;	/* type of memory segment */
  } __attribute__((packed));
  
  #define ISA_START_ADDRESS	0xa0000
  #define ISA_END_ADDRESS		0x100000
  
  #endif /* __ASSEMBLY__ */
  
  /* Implementation defined function to install an e820 map */
  unsigned install_e820_map(unsigned max_entries, struct e820entry *);
  
  #endif /* _ASM_X86_E820_H */
  