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bios.h
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display.h
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Editing: bios.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 1997 Michael Smith * Copyright (c) 1998 Jonathan Lemon * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #ifndef _MACHINE_PC_BIOS_H_ #define _MACHINE_PC_BIOS_H_ /* * Int 15:E820 'SMAP' structure */ #define SMAP_SIG 0x534D4150 /* 'SMAP' */ #define SMAP_TYPE_MEMORY 1 #define SMAP_TYPE_RESERVED 2 #define SMAP_TYPE_ACPI_RECLAIM 3 #define SMAP_TYPE_ACPI_NVS 4 #define SMAP_TYPE_ACPI_ERROR 5 #define SMAP_TYPE_DISABLED 6 #define SMAP_TYPE_PMEM 7 #define SMAP_TYPE_PRAM 12 #define SMAP_XATTR_ENABLED 0x00000001 #define SMAP_XATTR_NON_VOLATILE 0x00000002 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE) struct bios_smap { u_int64_t base; u_int64_t length; u_int32_t type; } __packed; /* Structure extended to include extended attribute field in ACPI 3.0. */ struct bios_smap_xattr { u_int64_t base; u_int64_t length; u_int32_t type; u_int32_t xattr; } __packed; /* * System Management BIOS */ #define SMBIOS_START 0xf0000 #define SMBIOS_STEP 0x10 #define SMBIOS_OFF 0 #define SMBIOS_LEN 4 #define SMBIOS_SIG "_SM_" struct smbios_eps { uint8_t anchor_string[4]; /* '_SM_' */ uint8_t checksum; uint8_t length; uint8_t major_version; uint8_t minor_version; uint16_t maximum_structure_size; uint8_t entry_point_revision; uint8_t formatted_area[5]; uint8_t intermediate_anchor_string[5]; /* '_DMI_' */ uint8_t intermediate_checksum; uint16_t structure_table_length; uint32_t structure_table_address; uint16_t number_structures; uint8_t BCD_revision; }; struct smbios_structure_header { uint8_t type; uint8_t length; uint16_t handle; }; #ifdef _KERNEL #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE) #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE) struct bios_oem_signature { char * anchor; /* search anchor string in BIOS memory */ size_t offset; /* offset from anchor (may be negative) */ size_t totlen; /* total length of BIOS string to copy */ } __packed; struct bios_oem_range { u_int from; /* shouldn't be below 0xe0000 */ u_int to; /* shouldn't be above 0xfffff */ } __packed; struct bios_oem { struct bios_oem_range range; struct bios_oem_signature signature[]; } __packed; int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen); uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen, int sigofs); void bios_add_smap_entries(struct bios_smap *smapbase, u_int32_t smapsize, vm_paddr_t *physmap, int *physmap_idx); #endif #endif /* _MACHINE_PC_BIOS_H_ */
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