http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/asm-x86_64/e820.h

/* * structures and definitions for the int 15, ax=e820 memory map * scheme. * * In a nutshell, setup.S populates a scratch table in the * empty_zero_block that contains a list of usable address/size * duples. setup.c, this information is transferred into the e820map, * and in init.c/numa.c, that new information is used to mark pages * reserved or not. */ #ifndef __E820_HEADER #define __E820_HEADER #include <linux/mmzone.h> #define E820MAP 0x2d0 /* our map */ #define E820MAX 128 /* number of entries in E820MAP */ #define E820NR 0x1e8 /* # entries in E820MAP */ #define E820_RAM 1 #define E820_RESERVED 2 #define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */ #define E820_NVS 4 #define HIGH_MEMORY (1024*1024) #define LOWMEMSIZE() (0x9f000) #ifndef __ASSEMBLY__ struct e820entry { u64 addr; /* start of memory segment */ u64 size; /* size of memory segment */ u32 type; /* type of memory segment */ } __attribute__((packed)); struct e820map { int nr_map; struct e820entry map[E820MAX]; }; extern unsigned long find_e820_area(unsigned long start, unsigned long end, unsigned size); extern void add_memory_region(unsigned long start, unsigned long size, int type); extern void setup_memory_region(void); extern void contig_e820_setup(void); extern unsigned long e820_end_of_ram(void); extern void e820_reserve_resources(void); extern void e820_print_map(char *who); extern int e820_mapped(unsigned long start, unsigned long end, unsigned type); extern void e820_bootmem_free(pg_data_t *pgdat, unsigned long start,unsigned long end); extern void e820_setup_gap(void); extern unsigned long e820_hole_size(unsigned long start_pfn, unsigned long end_pfn); extern void __init parse_memopt(char *p, char **end); extern void __init parse_memmapopt(char *p, char **end); extern struct e820map e820; #endif/*!__ASSEMBLY__*/ #endif/*__E820_HEADER*/