1 /*-
2 * Copyright (c) 1997 Michael Smith
3 * Copyright (c) 1998 Jonathan Lemon
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
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.
14 *
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
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/10.0/sys/i386/include/pc/bios.h 241027 2012-09-28 11:59:32Z jhb $
28 */
29
30 #ifndef _MACHINE_PC_BIOS_H_
31 #define _MACHINE_PC_BIOS_H_
32
33 /*
34 * Signature structure for the BIOS32 Service Directory header
35 */
36 struct bios32_SDheader
37 {
38 u_int8_t sig[4];
39 u_int32_t entry;
40 u_int8_t revision;
41 u_int8_t len;
42 u_int8_t cksum;
43 u_int8_t pad[5];
44 };
45
46 /*
47 * PnP BIOS presence structure
48 */
49 struct PnPBIOS_table
50 {
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 */
64 } __packed;
65
66 /*
67 * PnP BIOS return codes
68 */
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
86
87 /*
88 * DMI return codes
89 */
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
102
103 /*
104 * format specifiers and defines for bios16()
105 * s = short (16 bits)
106 * i = int (32 bits)
107 * p = pointer (converted to seg:offset)
108 * C,D,U = selector (corresponding to code/data/utility segment)
109 */
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
116
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
122
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
127
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
136
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
144
145 /*
146 * PCI BIOS functions
147 */
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
157
158 /*
159 * PCI interrupt routing table.
160 *
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
165 */
166 struct PIR_header
167 {
168 int8_t ph_signature[4];
169 u_int16_t ph_version;
170 u_int16_t ph_length;
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;
177 u_int8_t ph_res[11];
178 u_int8_t ph_checksum;
179 } __packed;
180
181 struct PIR_intpin
182 {
183 u_int8_t link;
184 u_int16_t irqs;
185 } __packed;
186
187 struct PIR_entry
188 {
189 u_int8_t pe_bus;
190 u_int8_t pe_res1:3;
191 u_int8_t pe_device:5;
192 struct PIR_intpin pe_intpin[4];
193 u_int8_t pe_slot;
194 u_int8_t pe_res3;
195 } __packed;
196
197 struct PIR_table
198 {
199 struct PIR_header pt_header;
200 struct PIR_entry pt_entry[0];
201 } __packed;
202
203 /*
204 * Int 15:E820 'SMAP' structure
205 */
206 #define SMAP_SIG 0x534D4150 /* 'SMAP' */
207
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
214 #define SMAP_XATTR_ENABLED 0x00000001
215 #define SMAP_XATTR_NON_VOLATILE 0x00000002
216 #define SMAP_XATTR_MASK (SMAP_XATTR_ENABLED | SMAP_XATTR_NON_VOLATILE)
217
218 struct bios_smap {
219 u_int64_t base;
220 u_int64_t length;
221 u_int32_t type;
222 } __packed;
223
224 /*
225 * System Management BIOS
226 */
227 #define SMBIOS_START 0xf0000
228 #define SMBIOS_STEP 0x10
229 #define SMBIOS_OFF 0
230 #define SMBIOS_LEN 4
231 #define SMBIOS_SIG "_SM_"
232
233 struct smbios_eps {
234 uint8_t anchor_string[4]; /* '_SM_' */
235 uint8_t checksum;
236 uint8_t length;
237 uint8_t major_version;
238 uint8_t minor_version;
239 uint16_t maximum_structure_size;
240 uint8_t entry_point_revision;
241 uint8_t formatted_area[5];
242 uint8_t intermediate_anchor_string[5]; /* '_DMI_' */
243 uint8_t intermediate_checksum;
244 uint16_t structure_table_length;
245 uint32_t structure_table_address;
246 uint16_t number_structures;
247 uint8_t BCD_revision;
248 };
249
250 struct smbios_structure_header {
251 uint8_t type;
252 uint8_t length;
253 uint16_t handle;
254 };
255
256 #ifdef _KERNEL
257 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
258 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
259
260 struct bios_oem_signature {
261 char * anchor; /* search anchor string in BIOS memory */
262 size_t offset; /* offset from anchor (may be negative) */
263 size_t totlen; /* total length of BIOS string to copy */
264 } __packed;
265
266 struct bios_oem_range {
267 u_int from; /* shouldn't be below 0xe0000 */
268 u_int to; /* shouldn't be above 0xfffff */
269 } __packed;
270
271 struct bios_oem {
272 struct bios_oem_range range;
273 struct bios_oem_signature signature[];
274 } __packed;
275
276 struct segment_info {
277 u_int base;
278 u_int limit;
279 };
280
281 #define BIOSCODE_FLAG 0x01
282 #define BIOSDATA_FLAG 0x02
283 #define BIOSUTIL_FLAG 0x04
284 #define BIOSARGS_FLAG 0x08
285
286 struct bios_segments {
287 struct segment_info code32; /* 32-bit code (mandatory) */
288 struct segment_info code16; /* 16-bit code */
289 struct segment_info data; /* 16-bit data */
290 struct segment_info util; /* 16-bit utility */
291 struct segment_info args; /* 16-bit args */
292 };
293
294 struct bios_regs {
295 u_int eax;
296 u_int ebx;
297 u_int ecx;
298 u_int edx;
299 u_int esi;
300 u_int edi;
301 };
302
303 struct bios_args {
304 u_int entry; /* entry point of routine */
305 struct bios_regs r;
306 struct bios_segments seg;
307 };
308
309 /*
310 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
311 * fills in the rest of the details.
312 */
313 struct bios32_SDentry
314 {
315 union
316 {
317 u_int8_t name[4]; /* service identifier */
318 u_int32_t id; /* as a 32-bit value */
319 } ident;
320 u_int32_t base; /* base of service */
321 u_int32_t len; /* service length */
322 u_int32_t entry; /* entrypoint offset from base */
323 vm_offset_t ventry; /* entrypoint in kernel virtual segment */
324 };
325
326 /*
327 * Exported lookup results
328 */
329 extern struct bios32_SDentry PCIbios;
330
331 int bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
332 uint32_t bios_sigsearch(uint32_t start, u_char *sig, int siglen, int paralen,
333 int sigofs);
334 int bios16(struct bios_args *, char *, ...);
335 int bios16_call(struct bios_regs *, char *);
336 int bios32(struct bios_regs *, u_int, u_short);
337 int bios32_SDlookup(struct bios32_SDentry *ent);
338 void set_bios_selectors(struct bios_segments *, int);
339
340 #endif
341
342 #endif /* _MACHINE_PC_BIOS_H_ */
Cache object: fe03e06043367417ec34907f15cb4090
|