1 /** $MirOS: src/sys/arch/i386/include/biosvar.h,v 1.8 2009/01/11 17:18:33 tg Exp $ */ 2 /* $OpenBSD: biosvar.h,v 1.42 2003/11/27 00:31:55 espie 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #ifndef _I386_BIOSVAR_H_ 31 #define _I386_BIOSVAR_H_ 32 #pragma pack(1) 33 34 /* some boxes put apm data seg in the 2nd page */ 35 #define BOOTARG_OFF (NBPG*2) 36 #define BOOTARG_LEN (NBPG*1) 37 #define BOOTBIOS_ADDR (0x7c00) 38 39 /* BIOS configure flags */ 40 #define BIOSF_BIOS32 0x0001 41 #define BIOSF_PCIBIOS 0x0002 42 #define BIOSF_PROMSCAN 0x0004 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 paddr_t bei_base; 93 psize_t bei_size; 94 paddr_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') 111 112 /* 113 * CTL_BIOS definitions. 114 */ 115 #define BIOS_DEV 1 /* int: BIOS boot device */ 116 #define BIOS_DISKINFO 2 /* struct: BIOS boot device info */ 117 #define BIOS_CKSUMLEN 3 /* int: disk cksum block count */ 118 #define BIOS_MAXID 4 /* number of valid machdep ids */ 119 120 #define CTL_BIOS_NAMES { \ 121 { 0, 0 }, \ 122 { "biosdev", CTLTYPE_INT }, \ 123 { "diskinfo", CTLTYPE_STRUCT }, \ 124 { "cksumlen", CTLTYPE_INT }, \ 125 } 126 127 #define BOOTARG_MEMMAP 0 128 typedef struct _bios_memmap { 129 u_int64_t addr; /* Beginning of block */ 130 u_int64_t size; /* Size of block */ 131 u_int32_t type; /* Type of block */ 132 } bios_memmap_t; 133 134 /* Info about disk from the bios, plus the mapping from 135 * BIOS numbers to BSD major (driver?) number. 136 * 137 * Also, do not bother with BIOSN*() macros, just parcel 138 * the info out, and use it like this. This makes for less 139 * of a dependance on BIOSN*() macros having to be the same 140 * across /boot, /bsd, and userland. 141 */ 142 #define BOOTARG_DISKINFO 1 143 typedef struct _bios_diskinfo { 144 /* BIOS section */ 145 int bios_number; /* BIOS number of drive (or -1) */ 146 u_int bios_cylinders; /* BIOS cylinders */ 147 u_int bios_heads; /* BIOS heads */ 148 u_int bios_sectors; /* BIOS sectors */ 149 int old_bios_edd; /* EDD support (obsolete) */ 150 151 /* BSD section */ 152 dev_t bsd_dev; /* BSD device */ 153 154 /* Checksum section */ 155 u_int32_t checksum; /* Checksum for drive */ 156 157 /* Misc. flags */ 158 u_int32_t flags; 159 #define BDI_INVALID 0x00000001 /* I/O error during checksumming */ 160 #define BDI_GOODLABEL 0x00000002 /* Had SCSI or ST506/ESDI disklabel */ 161 #define BDI_BADLABEL 0x00000004 /* Had another disklabel */ 162 #define BDI_EL_TORITO 0x00000008 /* 2,048-byte sectors */ 163 #define BDI_NOTADISK 0x00000010 /* not a disc */ 164 #define BDI_LBA 0x00000020 /* EDD access via LBA functions */ 165 #define BDI_PICKED 0x80000000 /* kernel-only: cksum matched */ 166 167 } bios_diskinfo_t; 168 169 #define BOOTARG_APMINFO 2 170 typedef struct _bios_apminfo { 171 /* APM_CONNECT returned values */ 172 u_int apm_detail; 173 u_int apm_code32_base; 174 u_int apm_code16_base; 175 u_int apm_code_len; 176 u_int apm_data_base; 177 u_int apm_data_len; 178 u_int apm_entry; 179 u_int apm_code16_len; 180 } bios_apminfo_t; 181 182 #define BOOTARG_CKSUMLEN 3 /* u_int32_t */ 183 184 #define BOOTARG_PCIINFO 4 185 typedef struct _bios_pciinfo { 186 /* PCI BIOS v2.0+ - Installation check values */ 187 u_int32_t pci_chars; /* Characteristics (%eax) */ 188 u_int32_t pci_rev; /* BCD Revision (%ebx) */ 189 u_int32_t pci_entry32; /* PM entry point for PCI BIOS */ 190 u_int32_t pci_lastbus; /* Number of last PCI bus */ 191 } bios_pciinfo_t; 192 193 #define BOOTARG_CONSDEV 5 194 typedef struct _bios_consdev { 195 dev_t consdev; 196 int conspeed; 197 } bios_consdev_t; 198 199 #define BOOTARG_SMPINFO 6 /* struct mp_float[] */ 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); 252 253 /* bios32.c */ 254 int bios32_service(u_int32_t, bios32_entry_t, bios32_entry_info_t); 255 256 extern u_int bootapiver; 257 extern bios_memmap_t *bios_memmap; 258 259 #endif /* _KERNEL */ 260 #endif /* _LOCORE */ 261 #endif /* _KERNEL || _STANDALONE */ 262 263 #pragma pack() 264 #endif /* _I386_BIOSVAR_H_ */ 265