2 * Copyright (c) 1997 Michael Smith
3 * Copyright (c) 1998 Jonathan Lemon
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
30 #ifndef _MACHINE_PC_BIOS_H_
31 #define _MACHINE_PC_BIOS_H_
34 * Signature structure for the BIOS32 Service Directory header
36 struct bios32_SDheader
47 * PnP BIOS presence structure
51 u_int8_t sig[4]; /* "$PnP */
52 u_int8_t version; /* should be 0x10 */
53 u_int8_t len; /* total structure length */
54 u_int16_t control; /* BIOS feature flags */
55 u_int8_t cksum; /* checksum */
56 u_int32_t evflagaddr; /* address of event notificaton flag */
57 u_int16_t rmentryoffset; /* real-mode entry offset */
58 u_int16_t rmentryseg; /* segment */
59 u_int16_t pmentryoffset; /* protected-mode entry offset */
60 u_int32_t pmentrybase; /* segment base */
61 u_int32_t oemdevid; /* motherboard EISA ID */
62 u_int16_t rmbiosseg; /* real-mode BIOS segment */
63 u_int32_t pmdataseg; /* protected-mode data segment */
67 * PnP BIOS return codes
69 #define PNP_SUCCESS 0x00
70 #define PNP_NOT_SET_STATICALLY 0x7f
71 #define PNP_UNKNOWN_FUNCTION 0x81
72 #define PNP_FUNCTION_NOT_SUPPORTED 0x82
73 #define PNP_INVALID_HANDLE 0x83
74 #define PNP_BAD_PARAMETER 0x84
75 #define PNP_SET_FAILED 0x85
76 #define PNP_EVENTS_NOT_PENDING 0x86
77 #define PNP_SYSTEM_NOT_DOCKED 0x87
78 #define PNP_NO_ISA_PNP_CARDS 0x88
79 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89
80 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a
81 #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b
82 #define PNP_BUFFER_TOO_SMALL 0x8c
83 #define PNP_USE_ESCD_SUPPORT 0x8d
84 #define PNP_MESSAGE_NOT_SUPPORTED 0x8e
85 #define PNP_HARDWARE_ERROR 0x8f
90 #define DMI_SUCCESS 0x00
91 #define DMI_UNKNOWN_FUNCTION 0x81
92 #define DMI_FUNCTION_NOT_SUPPORTED 0x82
93 #define DMI_INVALID_HANDLE 0x83
94 #define DMI_BAD_PARAMETER 0x84
95 #define DMI_INVALID_SUBFUNCTION 0x85
96 #define DMI_NO_CHANGE 0x86
97 #define DMI_ADD_STRUCTURE_FAILED 0x87
98 #define DMI_READ_ONLY 0x8d
99 #define DMI_LOCK_NOT_SUPPORTED 0x90
100 #define DMI_CURRENTLY_LOCKED 0x91
101 #define DMI_INVALID_LOCK 0x92
104 * format specifiers and defines for bios16()
105 * s = short (16 bits)
107 * p = pointer (converted to seg:offset)
108 * C,D,U = selector (corresponding to code/data/utility segment)
110 #define PNP_COUNT_DEVNODES "sppD", 0x00
111 #define PNP_GET_DEVNODE "sppsD", 0x01
112 #define PNP_SET_DEVNODE "sspsD", 0x02
113 #define PNP_GET_EVENT "spD", 0x03
114 #define PNP_SEND_MSG "ssD", 0x04
115 #define PNP_GET_DOCK_INFO "spD", 0x05
117 #define PNP_SEL_PRIBOOT "ssiiisspD", 0x07
118 #define PNP_GET_PRIBOOT "sspppppD", 0x08
119 #define PNP_SET_RESINFO "spD", 0x09
120 #define PNP_GET_RESINFO "spD", 0x0A
121 #define PNP_GET_APM_ID "sppD", 0x0B
123 #define PNP_GET_ISA_INFO "spD", 0x40
124 #define PNP_GET_ECSD_INFO "spppD", 0x41
125 #define PNP_READ_ESCD "spUD", 0x42
126 #define PNP_WRITE_ESCD "spUD", 0x43
128 #define PNP_GET_DMI_INFO "spppppD", 0x50
129 #define PNP_GET_DMI_STRUCTURE "sppUD", 0x51
130 #define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52
131 #define PNP_GET_DMI_CHANGE "spUD" 0x53
132 #define PNP_DMI_CONTROL "sspsUD" 0x54
133 #define PNP_GET_GPNV_INFO "sppppD" 0x55
134 #define PNP_READ_GPNV_DATA "ssppUD" 0x56
135 #define PNP_WRITE_GPNV_DATA "sspsUD" 0x57
137 #define PNP_BOOT_CHECK "sp", 0x60
138 #define PNP_COUNT_IPL "sppp", 0x61
139 #define PNP_GET_BOOTPRI "spp", 0x62
140 #define PNP_SET_BOOTPRI "sp", 0x63
141 #define PNP_GET_LASTBOOT "sp", 0x64
142 #define PNP_GET_BOOTFIRST "sp", 0x65
143 #define PNP_SET_BOOTFIRST "sp", 0x66
148 #define PCIBIOS_BIOS_PRESENT 0xb101
149 #define PCIBIOS_READ_CONFIG_BYTE 0xb108
150 #define PCIBIOS_READ_CONFIG_WORD 0xb109
151 #define PCIBIOS_READ_CONFIG_DWORD 0xb10a
152 #define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b
153 #define PCIBIOS_WRITE_CONFIG_WORD 0xb10c
154 #define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d
155 #define PCIBIOS_GET_IRQ_ROUTING 0xb10e
156 #define PCIBIOS_ROUTE_INTERRUPT 0xb10f
159 * PCI interrupt routing table.
161 * $PIR in the BIOS segment contains a PIR_table
162 * int 1a:b106 returns PIR_table in buffer at es:(e)di
163 * int 1a:b18e returns PIR_table in buffer at es:(e)di
164 * int 1a:b406 returns es:di pointing to the BIOS PIR_table
168 int8_t ph_signature[4];
169 u_int16_t ph_version;
171 u_int8_t ph_router_bus;
172 u_int8_t ph_router_dev_fn;
173 u_int16_t ph_pci_irqs;
174 u_int16_t ph_router_vendor;
175 u_int16_t ph_router_device;
176 u_int32_t ph_miniport;
178 u_int8_t ph_checksum;
191 u_int8_t pe_device:5;
192 struct PIR_intpin pe_intpin[4];
199 struct PIR_header pt_header;
200 struct PIR_entry pt_entry[0];
204 * Int 15:E820 'SMAP' structure
206 #define SMAP_SIG 0x534D4150 /* 'SMAP' */
208 #define SMAP_TYPE_MEMORY 1
209 #define SMAP_TYPE_RESERVED 2
210 #define SMAP_TYPE_ACPI_RECLAIM 3
211 #define SMAP_TYPE_ACPI_NVS 4
212 #define SMAP_TYPE_ACPI_ERROR 5
213 #define SMAP_TYPE_DISABLED 6
214 #define SMAP_TYPE_PMEM 7
215 #define SMAP_TYPE_PRAM 12
217 #define SMAP_XATTR_ENABLED 0x00000001
218 #define SMAP_XATTR_NON_VOLATILE 0x00000002
219 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE)
227 /* Structure extended to include extended attribute field in ACPI 3.0. */
228 struct bios_smap_xattr {
236 * System Management BIOS
238 #define SMBIOS_START 0xf0000
239 #define SMBIOS_STEP 0x10
242 #define SMBIOS_SIG "_SM_"
245 uint8_t anchor_string[4]; /* '_SM_' */
248 uint8_t major_version;
249 uint8_t minor_version;
250 uint16_t maximum_structure_size;
251 uint8_t entry_point_revision;
252 uint8_t formatted_area[5];
253 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */
254 uint8_t intermediate_checksum;
255 uint16_t structure_table_length;
256 uint32_t structure_table_address;
257 uint16_t number_structures;
258 uint8_t BCD_revision;
261 struct smbios_structure_header {
268 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
269 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
271 struct bios_oem_signature {
272 char * anchor; /* search anchor string in BIOS memory */
273 size_t offset; /* offset from anchor (may be negative) */
274 size_t totlen; /* total length of BIOS string to copy */
277 struct bios_oem_range {
278 u_int from; /* shouldn't be below 0xe0000 */
279 u_int to; /* shouldn't be above 0xfffff */
283 struct bios_oem_range range;
284 struct bios_oem_signature signature[];
287 struct segment_info {
292 #define BIOSCODE_FLAG 0x01
293 #define BIOSDATA_FLAG 0x02
294 #define BIOSUTIL_FLAG 0x04
295 #define BIOSARGS_FLAG 0x08
297 struct bios_segments {
298 struct segment_info code32; /* 32-bit code (mandatory) */
299 struct segment_info code16; /* 16-bit code */
300 struct segment_info data; /* 16-bit data */
301 struct segment_info util; /* 16-bit utility */
302 struct segment_info args; /* 16-bit args */
315 u_int entry; /* entry point of routine */
317 struct bios_segments seg;
321 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
322 * fills in the rest of the details.
324 struct bios32_SDentry
328 u_int8_t name[4]; /* service identifier */
329 u_int32_t id; /* as a 32-bit value */
331 u_int32_t base; /* base of service */
332 u_int32_t len; /* service length */
333 u_int32_t entry; /* entrypoint offset from base */
334 vm_offset_t ventry; /* entrypoint in kernel virtual segment */
338 * Exported lookup results
340 extern struct bios32_SDentry PCIbios;
342 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
343 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen,
345 int bios16(struct bios_args *, char *, ...);
346 int bios16_call(struct bios_regs *, char *);
347 int bios32(struct bios_regs *, u_int, u_short);
348 int bios32_SDlookup(struct bios32_SDentry *ent);
349 void set_bios_selectors(struct bios_segments *, int);
353 #endif /* _MACHINE_PC_BIOS_H_ */