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 * BIOS32 Service Directory entry. Caller supplies name, bios32_SDlookup
48 * fills in the rest of the details.
54 u_int8_t name[4]; /* service identifier */
55 u_int32_t id; /* as a 32-bit value */
57 u_int32_t base; /* base of service */
58 u_int32_t len; /* service length */
59 u_int32_t entry; /* entrypoint offset from base */
60 vm_offset_t ventry; /* entrypoint in kernel virtual segment */
63 extern int bios32_SDlookup(struct bios32_SDentry *ent);
64 extern u_int32_t bios_sigsearch(u_int32_t start, u_char *sig, int siglen,
65 int paralen, int sigofs);
67 #define BIOS_PADDRTOVADDR(x) ((x) + KERNBASE)
68 #define BIOS_VADDRTOPADDR(x) ((x) - KERNBASE)
72 * PnP BIOS presence structure
76 u_int8_t sig[4]; /* "$PnP */
77 u_int8_t version; /* should be 0x10 */
78 u_int8_t len; /* total structure length */
79 u_int16_t control; /* BIOS feature flags */
80 u_int8_t cksum; /* checksum */
81 u_int32_t evflagaddr; /* address of event notificaton flag */
82 u_int16_t rmentryoffset; /* real-mode entry offset */
83 u_int16_t rmentryseg; /* segment */
84 u_int16_t pmentryoffset; /* protected-mode entry offset */
85 u_int32_t pmentrybase; /* segment base */
86 u_int32_t oemdevid; /* motherboard EISA ID */
87 u_int16_t rmbiosseg; /* real-mode BIOS segment */
88 u_int32_t pmdataseg; /* protected-mode data segment */
93 * Exported lookup results
95 extern struct bios32_SDentry PCIbios;
102 #define BIOSCODE_FLAG 0x01
103 #define BIOSDATA_FLAG 0x02
104 #define BIOSUTIL_FLAG 0x04
105 #define BIOSARGS_FLAG 0x08
107 struct bios_segments {
108 struct segment_info code32; /* 32-bit code (mandatory) */
109 struct segment_info code16; /* 16-bit code */
110 struct segment_info data; /* 16-bit data */
111 struct segment_info util; /* 16-bit utility */
112 struct segment_info args; /* 16-bit args */
125 u_int entry; /* entry point of routine */
127 struct bios_segments seg;
131 * PnP BIOS return codes
133 #define PNP_SUCCESS 0x00
134 #define PNP_NOT_SET_STATICALLY 0x7f
135 #define PNP_UNKNOWN_FUNCTION 0x81
136 #define PNP_FUNTION_NOT_SUPPORTED 0x82
137 #define PNP_INVALID_HANDLE 0x83
138 #define PNP_BAD_PARAMETER 0x84
139 #define PNP_SET_FAILED 0x85
140 #define PNP_EVENTS_NOT_PENDING 0x86
141 #define PNP_SYSTEM_NOT_DOCKED 0x87
142 #define PNP_NO_ISA_PNP_CARDS 0x88
143 #define PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES 0x89
144 #define PNP_CONFIG_CHANGE_FAILED_NO_BATTERY 0x8a
145 #define PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT 0x8b
146 #define PNP_BUFFER_TOO_SMALL 0x8c
147 #define PNP_USE_ESCD_SUPPORT 0x8d
148 #define PNP_MESSAGE_NOT_SUPPORTED 0x8e
149 #define PNP_HARDWARE_ERROR 0x8f
154 #define DMI_SUCCESS 0x00
155 #define DMI_UNKNOWN_FUNCTION 0x81
156 #define DMI_FUNCTION_NOT_SUPPORTED 0x82
157 #define DMI_INVALID_HANDLE 0x83
158 #define DMI_BAD_PARAMETER 0x84
159 #define DMI_INVALID_SUBFUNCTION 0x85
160 #define DMI_NO_CHANGE 0x86
161 #define DMI_ADD_STRUCTURE_FAILED 0x87
162 #define DMI_READ_ONLY 0x8d
163 #define DMI_LOCK_NOT_SUPPORTED 0x90
164 #define DMI_CURRENTLY_LOCKED 0x91
165 #define DMI_INVALID_LOCK 0x92
168 * format specifiers and defines for bios16()
169 * s = short (16 bits)
171 * p = pointer (converted to seg:offset)
172 * C,D,U = selector (corresponding to code/data/utility segment)
174 #define PNP_COUNT_DEVNODES "sppD", 0x00
175 #define PNP_GET_DEVNODE "sppsD", 0x01
176 #define PNP_SET_DEVNODE "sspsD", 0x02
177 #define PNP_GET_EVENT "spD", 0x03
178 #define PNP_SEND_MSG "ssD", 0x04
179 #define PNP_GET_DOCK_INFO "spD", 0x05
181 #define PNP_SEL_PRIBOOT "ssiiisspD", 0x07
182 #define PNP_GET_PRIBOOT "sspppppD", 0x08
183 #define PNP_SET_RESINFO "spD", 0x09
184 #define PNP_GET_RESINFO "spD", 0x0A
185 #define PNP_GET_APM_ID "sppD", 0x0B
187 #define PNP_GET_ISA_INFO "spD", 0x40
188 #define PNP_GET_ECSD_INFO "spppD", 0x41
189 #define PNP_READ_ESCD "spUD", 0x42
190 #define PNP_WRITE_ESCD "spUD", 0x43
192 #define PNP_GET_DMI_INFO "spppppD", 0x50
193 #define PNP_GET_DMI_STRUCTURE "sppUD", 0x51
194 #define PNP_SET_DMI_STRUCTURE "sppsUD" 0x52
195 #define PNP_GET_DMI_CHANGE "spUD" 0x53
196 #define PNP_DMI_CONTROL "sspsUD" 0x54
197 #define PNP_GET_GPNV_INFO "sppppD" 0x55
198 #define PNP_READ_GPNV_DATA "ssppUD" 0x56
199 #define PNP_WRITE_GPNV_DATA "sspsUD" 0x57
201 #define PNP_BOOT_CHECK "sp", 0x60
202 #define PNP_COUNT_IPL "sppp", 0x61
203 #define PNP_GET_BOOTPRI "spp", 0x62
204 #define PNP_SET_BOOTPRI "sp", 0x63
205 #define PNP_GET_LASTBOOT "sp", 0x64
206 #define PNP_GET_BOOTFIRST "sp", 0x65
207 #define PNP_SET_BOOTFIRST "sp", 0x66
212 #define PCIBIOS_BIOS_PRESENT 0xb101
213 #define PCIBIOS_READ_CONFIG_BYTE 0xb108
214 #define PCIBIOS_READ_CONFIG_WORD 0xb109
215 #define PCIBIOS_READ_CONFIG_DWORD 0xb10a
216 #define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b
217 #define PCIBIOS_WRITE_CONFIG_WORD 0xb10c
218 #define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d
219 #define PCIBIOS_GET_IRQ_ROUTING 0xb10e
220 #define PCIBIOS_ROUTE_INTERRUPT 0xb10f
222 extern int bios16(struct bios_args *, char *, ...);
223 extern int bios16_call(struct bios_regs *, char *);
224 extern int bios32(struct bios_regs *, u_int, u_short);
225 extern void set_bios_selectors(struct bios_segments *, int);
228 * PCI interrupt routing table.
230 * $PIR in the BIOS segment contains a PIR_table
231 * int 1a:b106 returns PIR_table in buffer at es:(e)di
232 * int 1a:b18e returns PIR_table in buffer at es:(e)di
233 * int 1a:b406 returns es:di pointing to the BIOS PIR_table
237 int8_t ph_signature[4];
238 u_int16_t ph_version;
240 u_int8_t ph_router_bus;
241 u_int8_t ph_router_dev_fn;
242 u_int16_t ph_pci_irqs;
243 u_int16_t ph_router_vendor;
244 u_int16_t ph_router_device;
245 u_int32_t ph_miniport;
247 u_int8_t ph_checksum;
260 u_int8_t pe_device:5;
261 struct PIR_intpin pe_intpin[4];
268 struct PIR_header pt_header;
269 struct PIR_entry pt_entry[0];
273 * Int 15:E820 'SMAP' structure
276 #define SMAP_SIG 0x534D4150 /* 'SMAP' */
278 #define SMAP_TYPE_MEMORY 1
279 #define SMAP_TYPE_RESERVED 2
280 #define SMAP_TYPE_ACPI_RECLAIM 3
281 #define SMAP_TYPE_ACPI_NVS 4
282 #define SMAP_TYPE_ACPI_ERROR 5
290 struct bios_oem_signature {
291 char * anchor; /* search anchor string in BIOS memory */
292 size_t offset; /* offset from anchor (may be negative) */
293 size_t totlen; /* total length of BIOS string to copy */
295 struct bios_oem_range {
296 u_int from; /* shouldn't be below 0xe0000 */
297 u_int to; /* shouldn't be above 0xfffff */
300 struct bios_oem_range range;
301 struct bios_oem_signature signature[];
305 bios_oem_strings(struct bios_oem *oem, u_char *buffer, size_t maxlen);
308 #endif /* _MACHINE_PC_BIOS_H_ */