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/*-
* 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: release/9.1.0/sys/i386/include/pc/bios.h 191111 2009-04-15 17:31:22Z jkim $
*/
#ifndef _MACHINE_PC_BIOS_H_
#define _MACHINE_PC_BIOS_H_
/*
* Signature structure for the BIOS32 Service Directory header
*/
struct bios32_SDheader
{
u_int8_t sig[4];
u_int32_t entry;
u_int8_t revision;
u_int8_t len;
u_int8_t cksum;
u_int8_t pad[5];
};
/*
* BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
* fills in the rest of the details.
*/
struct bios32_SDentry
{
union
{
u_int8_t name[4]; /* service identifier */
u_int32_t id; /* as a 32-bit value */
} ident;
u_int32_t base; /* base of service */
u_int32_t len; /* service length */
u_int32_t entry; /* entrypoint offset from base */
vm_offset_t ventry; /* entrypoint in kernel virtual segment */
};
extern int bios32_SDlookup(struct bios32_SDentry *ent);
extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
int paralen, int sigofs);
#define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
#define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
/*
* PnP BIOS presence structure
*/
struct PnPBIOS_table
{
u_int8_t sig[4]; /* "$PnP */
u_int8_t version; /* should be 0x10 */
u_int8_t len; /* total structure length */
u_int16_t control; /* BIOS feature flags */
u_int8_t cksum; /* checksum */
u_int32_t evflagaddr; /* address of event notificaton flag */
u_int16_t rmentryoffset; /* real-mode entry offset */
u_int16_t rmentryseg; /* segment */
u_int16_t pmentryoffset; /* protected-mode entry offset */
u_int32_t pmentrybase; /* segment base */
u_int32_t oemdevid; /* motherboard EISA ID */
u_int16_t rmbiosseg; /* real-mode BIOS segment */
u_int32_t pmdataseg; /* protected-mode data segment */
} __packed;
/*
* Exported lookup results
*/
extern struct bios32_SDentry PCIbios;
struct segment_info {
u_int base;
u_int limit;
};
#define BIOSCODE_FLAG 0x01
#define BIOSDATA_FLAG 0x02
#define BIOSUTIL_FLAG 0x04
#define BIOSARGS_FLAG 0x08
struct bios_segments {
struct segment_info code32; /* 32-bit code (mandatory) */
struct segment_info code16; /* 16-bit code */
struct segment_info data; /* 16-bit data */
struct segment_info util; /* 16-bit utility */
struct segment_info args; /* 16-bit args */
};
struct bios_regs {
u_int eax;
u_int ebx;
u_int ecx;
u_int edx;
u_int esi;
u_int edi;
};
struct bios_args {
u_int entry; /* entry point of routine */
struct bios_regs r;
struct bios_segments seg;
};
/*
* PnP BIOS return codes
*/
#define PNP_SUCCESS 0x00
#define PNP_NOT_SET_STATICALLY 0x7f
#define PNP_UNKNOWN_FUNCTION 0x81
#define PNP_FUNTION_NOT_SUPPORTED 0x82
#define PNP_INVALID_HANDLE 0x83
#define PNP_BAD_PARAMETER 0x84
#define PNP_SET_FAILED 0x85
#define PNP_EVENTS_NOT_PENDING 0x86
#define PNP_SYSTEM_NOT_DOCKED 0x87
#define PNP_NO_ISA_PNP_CARDS 0x88
#define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89
#define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a
#define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b
#define PNP_BUFFER_TOO_SMALL 0x8c
#define PNP_USE_ESCD_SUPPORT 0x8d
#define PNP_MESSAGE_NOT_SUPPORTED 0x8e
#define PNP_HARDWARE_ERROR 0x8f
/*
* DMI return codes
*/
#define DMI_SUCCESS 0x00
#define DMI_UNKNOWN_FUNCTION 0x81
#define DMI_FUNCTION_NOT_SUPPORTED 0x82
#define DMI_INVALID_HANDLE 0x83
#define DMI_BAD_PARAMETER 0x84
#define DMI_INVALID_SUBFUNCTION 0x85
#define DMI_NO_CHANGE 0x86
#define DMI_ADD_STRUCTURE_FAILED 0x87
#define DMI_READ_ONLY 0x8d
#define DMI_LOCK_NOT_SUPPORTED 0x90
#define DMI_CURRENTLY_LOCKED 0x91
#define DMI_INVALID_LOCK 0x92
/*
* format specifiers and defines for bios16()
* s = short (16 bits)
* i = int (32 bits)
* p = pointer (converted to seg:offset)
* C,D,U = selector (corresponding to code/data/utility segment)
*/
#define PNP_COUNT_DEVNODES "sppD", 0x00
#define PNP_GET_DEVNODE "sppsD", 0x01
#define PNP_SET_DEVNODE "sspsD", 0x02
#define PNP_GET_EVENT "spD", 0x03
#define PNP_SEND_MSG "ssD", 0x04
#define PNP_GET_DOCK_INFO "spD", 0x05
#define PNP_SEL_PRIBOOT "ssiiisspD", 0x07
#define PNP_GET_PRIBOOT "sspppppD", 0x08
#define PNP_SET_RESINFO "spD", 0x09
#define PNP_GET_RESINFO "spD", 0x0A
#define PNP_GET_APM_ID "sppD", 0x0B
#define PNP_GET_ISA_INFO "spD", 0x40
#define PNP_GET_ECSD_INFO "spppD", 0x41
#define PNP_READ_ESCD "spUD", 0x42
#define PNP_WRITE_ESCD "spUD", 0x43
#define PNP_GET_DMI_INFO "spppppD", 0x50
#define PNP_GET_DMI_STRUCTURE "sppUD", 0x51
#define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52
#define PNP_GET_DMI_CHANGE "spUD" 0x53
#define PNP_DMI_CONTROL "sspsUD" 0x54
#define PNP_GET_GPNV_INFO "sppppD" 0x55
#define PNP_READ_GPNV_DATA "ssppUD" 0x56
#define PNP_WRITE_GPNV_DATA "sspsUD" 0x57
#define PNP_BOOT_CHECK "sp", 0x60
#define PNP_COUNT_IPL "sppp", 0x61
#define PNP_GET_BOOTPRI "spp", 0x62
#define PNP_SET_BOOTPRI "sp", 0x63
#define PNP_GET_LASTBOOT "sp", 0x64
#define PNP_GET_BOOTFIRST "sp", 0x65
#define PNP_SET_BOOTFIRST "sp", 0x66
/*
* PCI BIOS functions
*/
#define PCIBIOS_BIOS_PRESENT 0xb101
#define PCIBIOS_READ_CONFIG_BYTE 0xb108
#define PCIBIOS_READ_CONFIG_WORD 0xb109
#define PCIBIOS_READ_CONFIG_DWORD 0xb10a
#define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b
#define PCIBIOS_WRITE_CONFIG_WORD 0xb10c
#define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d
#define PCIBIOS_GET_IRQ_ROUTING 0xb10e
#define PCIBIOS_ROUTE_INTERRUPT 0xb10f
extern int bios16(struct bios_args *, char *, ...);
extern int bios16_call(struct bios_regs *, char *);
extern int bios32(struct bios_regs *, u_int, u_short);
extern void set_bios_selectors(struct bios_segments *, int);
/*
* PCI interrupt routing table.
*
* $PIR in the BIOS segment contains a PIR_table
* int 1a:b106 returns PIR_table in buffer at es:(e)di
* int 1a:b18e returns PIR_table in buffer at es:(e)di
* int 1a:b406 returns es:di pointing to the BIOS PIR_table
*/
struct PIR_header
{
int8_t ph_signature[4];
u_int16_t ph_version;
u_int16_t ph_length;
u_int8_t ph_router_bus;
u_int8_t ph_router_dev_fn;
u_int16_t ph_pci_irqs;
u_int16_t ph_router_vendor;
u_int16_t ph_router_device;
u_int32_t ph_miniport;
u_int8_t ph_res[11];
u_int8_t ph_checksum;
} __packed;
struct PIR_intpin
{
u_int8_t link;
u_int16_t irqs;
} __packed;
struct PIR_entry
{
u_int8_t pe_bus;
u_int8_t pe_res1:3;
u_int8_t pe_device:5;
struct PIR_intpin pe_intpin[4];
u_int8_t pe_slot;
u_int8_t pe_res3;
} __packed;
struct PIR_table
{
struct PIR_header pt_header;
struct PIR_entry pt_entry[0];
} __packed;
/*
* 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_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;
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;
extern int
bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
#endif /* _MACHINE_PC_BIOS_H_ */