diff options
Diffstat (limited to 'sys/amd64/include/pc/bios.h')
| -rw-r--r-- | sys/amd64/include/pc/bios.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/sys/amd64/include/pc/bios.h b/sys/amd64/include/pc/bios.h new file mode 100644 index 000000000000..99e346a4a344 --- /dev/null +++ b/sys/amd64/include/pc/bios.h @@ -0,0 +1,126 @@ +/*- + * 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_ */ |