1 /*- 2 * Copyright (c) 1997 Michael Smith 3 * Copyright (c) 1998 Jonathan Lemon 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PC_BIOS_H_ 31 #define _MACHINE_PC_BIOS_H_ 32 33 extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen, 34 int paralen, int sigofs); 35 36 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 37 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 38 39 /* 40 * Int 15:E820 'SMAP' structure 41 */ 42 43 #define SMAP_SIG 0x534D4150 /* 'SMAP' */ 44 45 #define SMAP_TYPE_MEMORY 1 46 #define SMAP_TYPE_RESERVED 2 47 #define SMAP_TYPE_ACPI_RECLAIM 3 48 #define SMAP_TYPE_ACPI_NVS 4 49 #define SMAP_TYPE_ACPI_ERROR 5 50 51 struct bios_smap { 52 u_int64_t base; 53 u_int64_t length; 54 u_int32_t type; 55 } __packed; 56 57 struct bios_oem_signature { 58 char * anchor; /* search anchor string in BIOS memory */ 59 size_t offset; /* offset from anchor (may be negative) */ 60 size_t totlen; /* total length of BIOS string to copy */ 61 } __packed; 62 struct bios_oem_range { 63 u_int from; /* shouldn't be below 0xe0000 */ 64 u_int to; /* shouldn't be above 0xfffff */ 65 } __packed; 66 struct bios_oem { 67 struct bios_oem_range range; 68 struct bios_oem_signature signature[]; 69 } __packed; 70 71 extern int 72 bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 73 74 75 #endif /* _MACHINE_PC_BIOS_H_ */ 76