Annotation of sys/arch/i386/include/biosvar.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: biosvar.h,v 1.48 2006/05/20 22:36:33 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1997-1999 Michael Shalayeff
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 26: * THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: #ifndef _I386_BIOSVAR_H_
! 30: #define _I386_BIOSVAR_H_
! 31: #pragma pack(1)
! 32:
! 33: /* some boxes put apm data seg in the 2nd page */
! 34: #define BOOTARG_OFF (NBPG*2)
! 35: #define BOOTARG_LEN (NBPG*1)
! 36: #define BOOTBIOS_ADDR (0x7c00)
! 37:
! 38: /* BIOS configure flags */
! 39: #define BIOSF_BIOS32 0x0001
! 40: #define BIOSF_PCIBIOS 0x0002
! 41: #define BIOSF_PROMSCAN 0x0004
! 42: #define BIOSF_SMBIOS 0x0008
! 43:
! 44: /* BIOS media ID */
! 45: #define BIOSM_F320K 0xff /* floppy ds/sd 8 spt */
! 46: #define BIOSM_F160K 0xfe /* floppy ss/sd 8 spt */
! 47: #define BIOSM_F360K 0xfd /* floppy ds/sd 9 spt */
! 48: #define BIOSM_F180K 0xfc /* floppy ss/sd 9 spt */
! 49: #define BIOSM_ROMD 0xfa /* ROM disk */
! 50: #define BIOSM_F120M 0xf9 /* floppy ds/hd 15 spt 5.25" */
! 51: #define BIOSM_F720K 0xf9 /* floppy ds/dd 9 spt 3.50" */
! 52: #define BIOSM_HD 0xf8 /* hard drive */
! 53: #define BIOSM_F144K 0xf0 /* floppy ds/hd 18 spt 3.50" */
! 54: #define BIOSM_OTHER 0xf0 /* any other */
! 55:
! 56: /*
! 57: * BIOS memory maps
! 58: */
! 59: #define BIOS_MAP_END 0x00 /* End of array XXX - special */
! 60: #define BIOS_MAP_FREE 0x01 /* Usable memory */
! 61: #define BIOS_MAP_RES 0x02 /* Reserved memory */
! 62: #define BIOS_MAP_ACPI 0x03 /* ACPI Reclaim memory */
! 63: #define BIOS_MAP_NVS 0x04 /* ACPI NVS memory */
! 64:
! 65: /*
! 66: * Optional ROM header
! 67: */
! 68: typedef
! 69: struct bios_romheader {
! 70: u_int16_t signature; /* 0xaa55 */
! 71: u_int8_t len; /* length in pages (512 bytes) */
! 72: u_int32_t entry; /* initialization entry point */
! 73: u_int8_t reserved[19];
! 74: u_int16_t pnpheader; /* offset to PnP expansion header */
! 75: } *bios_romheader_t;
! 76:
! 77: /*
! 78: * BIOS32
! 79: */
! 80: typedef
! 81: struct bios32_header {
! 82: u_int32_t signature; /* 00: signature "_32_" */
! 83: u_int32_t entry; /* 04: entry point */
! 84: u_int8_t rev; /* 08: revision */
! 85: u_int8_t length; /* 09: header length */
! 86: u_int8_t cksum; /* 0a: modulo 256 checksum */
! 87: u_int8_t reserved[5];
! 88: } *bios32_header_t;
! 89:
! 90: typedef
! 91: struct bios32_entry_info {
! 92: u_int32_t bei_base;
! 93: u_int32_t bei_size;
! 94: u_int32_t bei_entry;
! 95: } *bios32_entry_info_t;
! 96:
! 97: typedef
! 98: struct bios32_entry {
! 99: u_int32_t offset;
! 100: u_int16_t segment;
! 101: } *bios32_entry_t;
! 102:
! 103: #define BIOS32_START 0xe0000
! 104: #define BIOS32_SIZE 0x20000
! 105: #define BIOS32_END (BIOS32_START + BIOS32_SIZE - 0x10)
! 106:
! 107: #define BIOS32_MAKESIG(a, b, c, d) \
! 108: ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24))
! 109: #define BIOS32_SIGNATURE BIOS32_MAKESIG('_', '3', '2', '_')
! 110: #define PCIBIOS_SIGNATURE BIOS32_MAKESIG('$', 'P', 'C', 'I')
! 111: #define SMBIOS_SIGNATURE BIOS32_MAKESIG('_', 'S', 'M', '_')
! 112:
! 113: /*
! 114: * CTL_BIOS definitions.
! 115: */
! 116: #define BIOS_DEV 1 /* int: BIOS boot device */
! 117: #define BIOS_DISKINFO 2 /* struct: BIOS boot device info */
! 118: #define BIOS_CKSUMLEN 3 /* int: disk cksum block count */
! 119: #define BIOS_MAXID 4 /* number of valid machdep ids */
! 120:
! 121: #define CTL_BIOS_NAMES { \
! 122: { 0, 0 }, \
! 123: { "biosdev", CTLTYPE_INT }, \
! 124: { "diskinfo", CTLTYPE_STRUCT }, \
! 125: { "cksumlen", CTLTYPE_INT }, \
! 126: }
! 127:
! 128: #define BOOTARG_MEMMAP 0
! 129: typedef struct _bios_memmap {
! 130: u_int64_t addr; /* Beginning of block */
! 131: u_int64_t size; /* Size of block */
! 132: u_int32_t type; /* Type of block */
! 133: } bios_memmap_t;
! 134:
! 135: /* Info about disk from the bios, plus the mapping from
! 136: * BIOS numbers to BSD major (driver?) number.
! 137: *
! 138: * Also, do not bother with BIOSN*() macros, just parcel
! 139: * the info out, and use it like this. This makes for less
! 140: * of a dependance on BIOSN*() macros having to be the same
! 141: * across /boot, /bsd, and userland.
! 142: */
! 143: #define BOOTARG_DISKINFO 1
! 144: typedef struct _bios_diskinfo {
! 145: /* BIOS section */
! 146: int bios_number; /* BIOS number of drive (or -1) */
! 147: u_int bios_cylinders; /* BIOS cylinders */
! 148: u_int bios_heads; /* BIOS heads */
! 149: u_int bios_sectors; /* BIOS sectors */
! 150: int bios_edd; /* EDD support */
! 151:
! 152: /* BSD section */
! 153: dev_t bsd_dev; /* BSD device */
! 154:
! 155: /* Checksum section */
! 156: u_int32_t checksum; /* Checksum for drive */
! 157:
! 158: /* Misc. flags */
! 159: u_int32_t flags;
! 160: #define BDI_INVALID 0x00000001 /* I/O error during checksumming */
! 161: #define BDI_GOODLABEL 0x00000002 /* Had SCSI or ST506/ESDI disklabel */
! 162: #define BDI_BADLABEL 0x00000004 /* Had another disklabel */
! 163: #define BDI_EL_TORITO 0x00000008 /* 2,048-byte sectors */
! 164: #define BDI_PICKED 0x80000000 /* kernel-only: cksum matched */
! 165:
! 166: } bios_diskinfo_t;
! 167:
! 168: #define BOOTARG_APMINFO 2
! 169: typedef struct _bios_apminfo {
! 170: /* APM_CONNECT returned values */
! 171: u_int apm_detail;
! 172: u_int apm_code32_base;
! 173: u_int apm_code16_base;
! 174: u_int apm_code_len;
! 175: u_int apm_data_base;
! 176: u_int apm_data_len;
! 177: u_int apm_entry;
! 178: u_int apm_code16_len;
! 179: } bios_apminfo_t;
! 180:
! 181: #define BOOTARG_CKSUMLEN 3 /* u_int32_t */
! 182:
! 183: #define BOOTARG_PCIINFO 4
! 184: typedef struct _bios_pciinfo {
! 185: /* PCI BIOS v2.0+ - Installation check values */
! 186: u_int32_t pci_chars; /* Characteristics (%eax) */
! 187: u_int32_t pci_rev; /* BCD Revision (%ebx) */
! 188: u_int32_t pci_entry32; /* PM entry point for PCI BIOS */
! 189: u_int32_t pci_lastbus; /* Number of last PCI bus */
! 190: } bios_pciinfo_t;
! 191:
! 192: #define BOOTARG_CONSDEV 5
! 193: typedef struct _bios_consdev {
! 194: dev_t consdev;
! 195: int conspeed;
! 196: } bios_consdev_t;
! 197:
! 198: #define BOOTARG_SMPINFO 6 /* struct mp_float[] */
! 199:
! 200: #define BOOTARG_BOOTMAC 7
! 201: typedef struct _bios_bootmac {
! 202: char mac[6];
! 203: } bios_bootmac_t;
! 204:
! 205: #if defined(_KERNEL) || defined (_STANDALONE)
! 206:
! 207: #ifdef _LOCORE
! 208: #define DOINT(n) int $0x20+(n)
! 209: #else
! 210: #define DOINT(n) "int $0x20+(" #n ")"
! 211:
! 212: extern volatile struct BIOS_regs {
! 213: u_int32_t biosr_ax;
! 214: u_int32_t biosr_cx;
! 215: u_int32_t biosr_dx;
! 216: u_int32_t biosr_bx;
! 217: u_int32_t biosr_bp;
! 218: u_int32_t biosr_si;
! 219: u_int32_t biosr_di;
! 220: u_int32_t biosr_ds;
! 221: u_int32_t biosr_es;
! 222: } BIOS_regs;
! 223:
! 224: #ifdef _KERNEL
! 225: #include <machine/bus.h>
! 226:
! 227: struct bios_attach_args {
! 228: char *bios_dev;
! 229: u_int bios_func;
! 230: bus_space_tag_t bios_iot;
! 231: bus_space_tag_t bios_memt;
! 232: union {
! 233: void *_p;
! 234: bios_apminfo_t *_bios_apmp;
! 235: } _;
! 236: };
! 237:
! 238: #define bios_apmp _._bios_apmp
! 239:
! 240: struct consdev;
! 241: struct proc;
! 242:
! 243: int bios_sysctl(int *, u_int, void *, size_t *, void *, size_t, struct proc *);
! 244:
! 245: void bioscnprobe(struct consdev *);
! 246: void bioscninit(struct consdev *);
! 247: void bioscnputc(dev_t, int);
! 248: int bioscngetc(dev_t);
! 249: void bioscnpollc(dev_t, int);
! 250: void bios_getopt(void);
! 251:
! 252: /* bios32.c */
! 253: int bios32_service(u_int32_t, bios32_entry_t, bios32_entry_info_t);
! 254:
! 255: extern u_int bootapiver;
! 256: extern bios_memmap_t *bios_memmap;
! 257: extern void *bios_smpinfo;
! 258: extern bios_pciinfo_t *bios_pciinfo;
! 259:
! 260: #endif /* _KERNEL */
! 261: #endif /* _LOCORE */
! 262: #endif /* _KERNEL || _STANDALONE */
! 263:
! 264: #pragma pack()
! 265: #endif /* _I386_BIOSVAR_H_ */
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