Annotation of sys/arch/amd64/include/biosvar.h, Revision 1.1.1.1
1.1 nbrk 1: /* XXX - DSR */
2: /* $OpenBSD: biosvar.h,v 1.7 2006/05/20 22:36:33 deraadt Exp $ */
3:
4: /*
5: * Copyright (c) 1997-1999 Michael Shalayeff
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. The name of the author may not be used to endorse or promote products
17: * derived from this software without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
23: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
24: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
25: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
28: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
29: * THE POSSIBILITY OF SUCH DAMAGE.
30: */
31:
32: #ifndef _I386_BIOSVAR_H_
33: #define _I386_BIOSVAR_H_
34: #pragma pack(1)
35:
36: /* some boxes put apm data seg in the 2nd page */
37: #define BOOTARG_OFF (NBPG*2)
38: #define BOOTARG_LEN (NBPG*1)
39: #define BOOTBIOS_ADDR (0x7c00)
40:
41: /* BIOS configure flags */
42: #define BIOSF_BIOS32 0x0001
43: #define BIOSF_PCIBIOS 0x0002
44: #define BIOSF_PROMSCAN 0x0004
45: #define BIOSF_SMBIOS 0x0006
46:
47: /* BIOS media ID */
48: #define BIOSM_F320K 0xff /* floppy ds/sd 8 spt */
49: #define BIOSM_F160K 0xfe /* floppy ss/sd 8 spt */
50: #define BIOSM_F360K 0xfd /* floppy ds/sd 9 spt */
51: #define BIOSM_F180K 0xfc /* floppy ss/sd 9 spt */
52: #define BIOSM_ROMD 0xfa /* ROM disk */
53: #define BIOSM_F120M 0xf9 /* floppy ds/hd 15 spt 5.25" */
54: #define BIOSM_F720K 0xf9 /* floppy ds/dd 9 spt 3.50" */
55: #define BIOSM_HD 0xf8 /* hard drive */
56: #define BIOSM_F144K 0xf0 /* floppy ds/hd 18 spt 3.50" */
57: #define BIOSM_OTHER 0xf0 /* any other */
58:
59: /*
60: * BIOS memory maps
61: */
62: #define BIOS_MAP_END 0x00 /* End of array XXX - special */
63: #define BIOS_MAP_FREE 0x01 /* Usable memory */
64: #define BIOS_MAP_RES 0x02 /* Reserved memory */
65: #define BIOS_MAP_ACPI 0x03 /* ACPI Reclaim memory */
66: #define BIOS_MAP_NVS 0x04 /* ACPI NVS memory */
67:
68: /*
69: * Optional ROM header
70: */
71: typedef
72: struct bios_romheader {
73: u_int16_t signature; /* 0xaa55 */
74: u_int8_t len; /* length in pages (512 bytes) */
75: u_int32_t entry; /* initialization entry point */
76: u_int8_t reserved[19];
77: u_int16_t pnpheader; /* offset to PnP expansion header */
78: } *bios_romheader_t;
79:
80: /*
81: * BIOS32
82: */
83: typedef
84: struct bios32_header {
85: u_int32_t signature; /* 00: signature "_32_" */
86: u_int32_t entry; /* 04: entry point */
87: u_int8_t rev; /* 08: revision */
88: u_int8_t length; /* 09: header length */
89: u_int8_t cksum; /* 0a: modulo 256 checksum */
90: u_int8_t reserved[5];
91: } *bios32_header_t;
92:
93: typedef
94: struct bios32_entry_info {
95: paddr_t bei_base;
96: psize_t bei_size;
97: paddr_t bei_entry;
98: } *bios32_entry_info_t;
99:
100: typedef
101: struct bios32_entry {
102: u_int32_t offset;
103: u_int16_t segment;
104: } *bios32_entry_t;
105:
106: #define BIOS32_START 0xe0000
107: #define BIOS32_SIZE 0x20000
108: #define BIOS32_END (BIOS32_START + BIOS32_SIZE - 0x10)
109:
110: #define BIOS32_MAKESIG(a, b, c, d) \
111: ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24))
112: #define BIOS32_SIGNATURE BIOS32_MAKESIG('_', '3', '2', '_')
113: #define PCIBIOS_SIGNATURE BIOS32_MAKESIG('$', 'P', 'C', 'I')
114: #define SMBIOS_SIGNATURE BIOS32_MAKESIG('_', 'S', 'M', '_')
115:
116: /*
117: * CTL_BIOS definitions.
118: */
119: #define BIOS_DEV 1 /* int: BIOS boot device */
120: #define BIOS_DISKINFO 2 /* struct: BIOS boot device info */
121: #define BIOS_CKSUMLEN 3 /* int: disk cksum block count */
122: #define BIOS_MAXID 4 /* number of valid machdep ids */
123:
124: #define CTL_BIOS_NAMES { \
125: { 0, 0 }, \
126: { "biosdev", CTLTYPE_INT }, \
127: { "diskinfo", CTLTYPE_STRUCT }, \
128: { "cksumlen", CTLTYPE_INT }, \
129: }
130:
131: #define BOOTARG_MEMMAP 0
132: typedef struct _bios_memmap {
133: u_int64_t addr; /* Beginning of block */
134: u_int64_t size; /* Size of block */
135: u_int32_t type; /* Type of block */
136: } bios_memmap_t;
137:
138: /* Info about disk from the bios, plus the mapping from
139: * BIOS numbers to BSD major (driver?) number.
140: *
141: * Also, do not bother with BIOSN*() macros, just parcel
142: * the info out, and use it like this. This makes for less
143: * of a dependance on BIOSN*() macros having to be the same
144: * across /boot, /bsd, and userland.
145: */
146: #define BOOTARG_DISKINFO 1
147: typedef struct _bios_diskinfo {
148: /* BIOS section */
149: int bios_number; /* BIOS number of drive (or -1) */
150: u_int bios_cylinders; /* BIOS cylinders */
151: u_int bios_heads; /* BIOS heads */
152: u_int bios_sectors; /* BIOS sectors */
153: int bios_edd; /* EDD support */
154:
155: /* BSD section */
156: dev_t bsd_dev; /* BSD device */
157:
158: /* Checksum section */
159: u_int32_t checksum; /* Checksum for drive */
160:
161: /* Misc. flags */
162: u_int32_t flags;
163: #define BDI_INVALID 0x00000001 /* I/O error during checksumming */
164: #define BDI_GOODLABEL 0x00000002 /* Had SCSI or ST506/ESDI disklabel */
165: #define BDI_BADLABEL 0x00000004 /* Had another disklabel */
166: #define BDI_EL_TORITO 0x00000008 /* 2,048-byte sectors */
167: #define BDI_PICKED 0x80000000 /* kernel-only: cksum matched */
168:
169: } bios_diskinfo_t;
170:
171: #define BOOTARG_APMINFO 2
172: typedef struct _bios_apminfo {
173: /* APM_CONNECT returned values */
174: u_int apm_detail;
175: u_int apm_code32_base;
176: u_int apm_code16_base;
177: u_int apm_code_len;
178: u_int apm_data_base;
179: u_int apm_data_len;
180: u_int apm_entry;
181: u_int apm_code16_len;
182: } bios_apminfo_t;
183:
184: #define BOOTARG_CKSUMLEN 3 /* u_int32_t */
185:
186: #define BOOTARG_PCIINFO 4
187: typedef struct _bios_pciinfo {
188: /* PCI BIOS v2.0+ - Installation check values */
189: u_int32_t pci_chars; /* Characteristics (%eax) */
190: u_int32_t pci_rev; /* BCD Revision (%ebx) */
191: u_int32_t pci_entry32; /* PM entry point for PCI BIOS */
192: u_int32_t pci_lastbus; /* Number of last PCI bus */
193: } bios_pciinfo_t;
194:
195: #define BOOTARG_CONSDEV 5
196: typedef struct _bios_consdev {
197: dev_t consdev;
198: int conspeed;
199: } bios_consdev_t;
200:
201: #define BOOTARG_BOOTMAC 7
202: typedef struct _bios_bootmac {
203: char mac[6];
204: } bios_bootmac_t;
205:
206: #if defined(_KERNEL) || defined (_STANDALONE)
207:
208: #ifdef _LOCORE
209: #define DOINT(n) int $0x20+(n)
210: #else
211: #define DOINT(n) "int $0x20+(" #n ")"
212:
213: extern volatile struct BIOS_regs {
214: u_int32_t biosr_ax;
215: u_int32_t biosr_cx;
216: u_int32_t biosr_dx;
217: u_int32_t biosr_bx;
218: u_int32_t biosr_bp;
219: u_int32_t biosr_si;
220: u_int32_t biosr_di;
221: u_int32_t biosr_ds;
222: u_int32_t biosr_es;
223: } BIOS_regs;
224:
225: #ifdef _KERNEL
226: #include <machine/bus.h>
227:
228: struct bios_attach_args {
229: char *bios_dev;
230: u_int bios_func;
231: bus_space_tag_t bios_iot;
232: bus_space_tag_t bios_memt;
233: union {
234: void *_p;
235: bios_apminfo_t *_bios_apmp;
236: } _;
237: };
238:
239: #define bios_apmp _._bios_apmp
240:
241: struct consdev;
242: struct proc;
243:
244: int bios_sysctl(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
245:
246: void bioscnprobe(struct consdev *);
247: void bioscninit(struct consdev *);
248: void bioscnputc(dev_t, int);
249: int bioscngetc(dev_t);
250: void bioscnpollc(dev_t, int);
251: void bios_getopt(void);
252: bios_diskinfo_t *bios_getdiskinfo(dev_t);
253:
254: /* bios32.c */
255: int bios32_service(u_int32_t, bios32_entry_t, bios32_entry_info_t);
256:
257: extern u_int bootapiver;
258: extern bios_memmap_t *bios_memmap;
259:
260: #endif /* _KERNEL */
261: #endif /* _LOCORE */
262: #endif /* _KERNEL || _STANDALONE */
263:
264: #pragma pack()
265: #endif /* _I386_BIOSVAR_H_ */
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