| /* | |
| * 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 | |
| #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 | |
| #define E820_NVS 4 | |
| #define HIGH_MEMORY (1024*1024) | |
| #ifndef __ASSEMBLY__ | |
| struct e820map { | |
| int nr_map; | |
| struct e820entry { | |
| unsigned long long addr; /* start of memory segment */ | |
| unsigned long long size; /* size of memory segment */ | |
| unsigned long type; /* type of memory segment */ | |
| } map[E820MAX]; | |
| }; | |
| extern struct e820map e820; | |
| extern int e820_all_mapped(unsigned long start, unsigned long end, | |
| unsigned type); | |
| #endif/*!__ASSEMBLY__*/ | |
| #endif/*__E820_HEADER*/ |