/* * 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); #else static inline void e820_mark_nosave_regions(void) { } #endif #endif/*!__ASSEMBLY__*/ #endif/*__E820_HEADER*/