blob: a9f7c6ec32bf7ecad8041a7db1af54c4f2a47393 [file] [log] [blame]
* structures and definitions for the int 15, ax=e820 memory map
* scheme.
* In a nutshell, arch/i386/boot/setup.S populates a scratch table
* in the empty_zero_block that contains a list of usable address/size
* duples. In arch/i386/kernel/setup.c, this information is
* transferred into the e820map, and in arch/i386/mm/init.c, that
* new information is used to mark pages reserved or not.
#ifndef __E820_HEADER
#define __E820_HEADER
#include <linux/ioport.h>
#define HIGH_MEMORY (1024*1024)
#ifndef __ASSEMBLY__
extern struct e820map e820;
extern void update_e820(void);
extern int e820_all_mapped(unsigned long start, unsigned long end,
unsigned type);
extern int e820_any_mapped(u64 start, u64 end, unsigned type);
extern void propagate_e820_map(void);
extern void register_bootmem_low_pages(unsigned long max_low_pfn);
extern void add_memory_region(unsigned long long start,
unsigned long long size, int type);
extern void update_memory_range(u64 start, u64 size, unsigned old_type,
unsigned new_type);
extern void e820_register_memory(void);
extern void limit_regions(unsigned long long size);
extern void print_memory_map(char *who);
extern void init_iomem_resources(struct resource *code_resource,
struct resource *data_resource,
struct resource *bss_resource);
#if defined(CONFIG_PM) && defined(CONFIG_HIBERNATION)
extern void e820_mark_nosave_regions(void);
static inline void e820_mark_nosave_regions(void)