1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2009 Pierre-Alexandre Meyer 4 * 5 * Some parts borrowed from meminfo.c32: 6 * 7 * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved 8 * Copyright 2009 Intel Corporation; author: H. Peter Anvin 9 * 10 * Some parts borrowed from Linux: 11 * 12 * Copyright (C) 1991, 1992 Linus Torvalds 13 * Copyright 2007 rPath, Inc. - All Rights Reserved 14 * Copyright 2009 Intel Corporation; author H. Peter Anvin 15 * 16 * This file is part of Syslinux, and is made available under 17 * the terms of the GNU General Public License version 2. 18 * 19 * ----------------------------------------------------------------------- */ 20 21 #ifndef _MEMORY_H_ 22 #define _MEMORY_H_ 23 #include <stdint.h> 24 25 #define E820MAX 128 26 #define E820_RAM 1 27 #define E820_RESERVED 2 28 #define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */ 29 #define E820_NVS 4 30 31 #define RES_START 0xa0000 32 #define RES_END 0x100000 33 34 struct e820entry { 35 uint64_t addr; /* start of memory segment */ 36 uint64_t size; /* size of memory segment */ 37 uint64_t type; /* type of memory segment */ 38 } __attribute__ ((packed)); 39 40 const char *const e820_types[5]; 41 42 void get_type(int, char *, int); 43 void detect_memory_e820(struct e820entry *desc, int size_map, int *size_found); 44 int detect_memory_e801(int *, int *); 45 int detect_memory_88(int *); 46 47 /* The following stuff could be merge once the addr_t will be set to 64bits. 48 * syslinux_scan_memory can be used for that purpose */ 49 unsigned long memsize_e820(struct e820entry *e820, int e820_nr); 50 int sanitize_e820_map(struct e820entry *orig_map, struct e820entry *new_bios, 51 short old_nr); 52 unsigned long detect_memsize(void); 53 #endif 54
