1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1997 Michael Smith 5 * Copyright (c) 1998 Jonathan Lemon 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef _MACHINE_PC_BIOS_H_ 31 #define _MACHINE_PC_BIOS_H_ 32 33 /* 34 * Int 15:E820 'SMAP' structure 35 */ 36 #define SMAP_SIG 0x534D4150 /* 'SMAP' */ 37 38 #define SMAP_TYPE_MEMORY 1 39 #define SMAP_TYPE_RESERVED 2 40 #define SMAP_TYPE_ACPI_RECLAIM 3 41 #define SMAP_TYPE_ACPI_NVS 4 42 #define SMAP_TYPE_ACPI_ERROR 5 43 #define SMAP_TYPE_DISABLED 6 44 #define SMAP_TYPE_PMEM 7 45 #define SMAP_TYPE_PRAM 12 46 47 #define SMAP_XATTR_ENABLED 0x00000001 48 #define SMAP_XATTR_NON_VOLATILE 0x00000002 49 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) 50 51 struct bios_smap { 52 u_int64_t base; 53 u_int64_t length; 54 u_int32_t type; 55 } __packed; 56 57 /* Structure extended to include extended attribute field in ACPI 3.0. */ 58 struct bios_smap_xattr { 59 u_int64_t base; 60 u_int64_t length; 61 u_int32_t type; 62 u_int32_t xattr; 63 } __packed; 64 65 #ifdef _KERNEL 66 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) 67 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) 68 69 struct bios_oem_signature { 70 char * anchor; /* search anchor string in BIOS memory */ 71 size_t offset; /* offset from anchor (may be negative) */ 72 size_t totlen; /* total length of BIOS string to copy */ 73 } __packed; 74 75 struct bios_oem_range { 76 u_int from; /* shouldn't be below 0xe0000 */ 77 u_int to; /* shouldn't be above 0xfffff */ 78 } __packed; 79 80 struct bios_oem { 81 struct bios_oem_range range; 82 struct bios_oem_signature signature[]; 83 } __packed; 84 85 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); 86 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, 87 int sigofs); 88 void bios_add_smap_entries(struct bios_smap *smapbase, u_int32_t smapsize, 89 vm_paddr_t *physmap, int *physmap_idx); 90 #endif 91 92 #endif /* _MACHINE_PC_BIOS_H_ */ 93