sys/arch/x86/include/bootinfo.h

   1 /*      $NetBSD: bootinfo.h,v 1.15 2009/02/16 22:29:33 jmcneill Exp $   */
   2
   3 /*
   4  * Copyright (c) 1997
   5  *      Matthias Drochner.  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 BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  */
  28
  29 #define BTINFO_BOOTPATH         0
  30 #define BTINFO_ROOTDEVICE       1
  31 #define BTINFO_BOOTDISK         3
  32 #define BTINFO_NETIF            4
  33 #define BTINFO_CONSOLE          6
  34 #define BTINFO_BIOSGEOM         7
  35 #define BTINFO_SYMTAB           8
  36 #define BTINFO_MEMMAP           9
  37 #define BTINFO_BOOTWEDGE        10
  38 #define BTINFO_MODULELIST       11
  39 #define BTINFO_FRAMEBUFFER      12
  40
  41 #ifndef _LOCORE
  42
  43 struct btinfo_common {
  44         int len;
  45         int type;
  46 };
  47
  48 struct btinfo_bootpath {
  49         struct btinfo_common common;
  50         char bootpath[80];
  51 };
  52
  53 struct btinfo_rootdevice {
  54         struct btinfo_common common;
  55         char devname[16];
  56 };
  57
  58 struct btinfo_bootdisk {
  59         struct btinfo_common common;
  60         int labelsector; /* label valid if != -1 */
  61         struct {
  62                 uint16_t type, checksum;
  63                 char packname[16];
  64         } label;
  65         int biosdev;
  66         int partition;
  67 };
  68
  69 struct btinfo_bootwedge {
  70         struct btinfo_common common;
  71         int biosdev;
  72         daddr_t startblk;
  73         uint64_t nblks;
  74         daddr_t matchblk;
  75         uint64_t matchnblks;
  76         uint8_t matchhash[16];  /* MD5 hash */
  77 } __packed;
  78
  79 struct btinfo_netif {
  80         struct btinfo_common common;
  81         char ifname[16];
  82         int bus;
  83 #define BI_BUS_ISA 0
  84 #define BI_BUS_PCI 1
  85         union {
  86                 unsigned int iobase; /* ISA */
  87                 unsigned int tag; /* PCI, BIOS format */
  88         } addr;
  89 };
  90
  91 struct btinfo_console {
  92         struct btinfo_common common;
  93         char devname[16];
  94         int addr;
  95         int speed;
  96 };
  97
  98 struct btinfo_symtab {
  99         struct btinfo_common common;
 100         int nsym;
 101         int ssym;
 102         int esym;
 103 };
 104
 105 struct bi_memmap_entry {
 106         uint64_t addr;          /* beginning of block */        /* 8 */
 107         uint64_t size;          /* size of block */             /* 8 */
 108         uint32_t type;          /* type of block */             /* 4 */
 109 } __packed;                             /*      == 20 */
 110
 111 #define BIM_Memory      1       /* available RAM usable by OS */
 112 #define BIM_Reserved    2       /* in use or reserved by the system */
 113 #define BIM_ACPI        3       /* ACPI Reclaim memory */
 114 #define BIM_NVS         4       /* ACPI NVS memory */
 115
 116 struct btinfo_memmap {
 117         struct btinfo_common common;
 118         int num;
 119         struct bi_memmap_entry entry[1]; /* var len */
 120 };
 121
 122 #if HAVE_NBTOOL_CONFIG_H
 123 #include <nbinclude/sys/bootblock.h>
 124 #else
 125 #include <sys/bootblock.h>
 126 #endif /* HAVE_NBTOOL_CONFIG_H */
 127
 128 /*
 129  * Structure describing disk info as seen by the BIOS.
 130  */
 131 struct bi_biosgeom_entry {
 132         int             sec, head, cyl;         /* geometry */
 133         uint64_t        totsec;                 /* LBA sectors from ext int13 */
 134         int             flags, dev;             /* flags, BIOS device # */
 135 #define BI_GEOM_INVALID         0x000001
 136 #define BI_GEOM_EXTINT13        0x000002
 137 #ifdef BIOSDISK_EXTINFO_V3
 138 #define BI_GEOM_BADCKSUM        0x000004        /* v3.x checksum invalid */
 139 #define BI_GEOM_BUS_MASK        0x00ff00        /* connecting bus type */
 140 #define BI_GEOM_BUS_ISA         0x000100
 141 #define BI_GEOM_BUS_PCI         0x000200
 142 #define BI_GEOM_BUS_OTHER       0x00ff00
 143 #define BI_GEOM_IFACE_MASK      0xff0000        /* interface type */
 144 #define BI_GEOM_IFACE_ATA       0x010000
 145 #define BI_GEOM_IFACE_ATAPI     0x020000
 146 #define BI_GEOM_IFACE_SCSI      0x030000
 147 #define BI_GEOM_IFACE_USB       0x040000
 148 #define BI_GEOM_IFACE_1394      0x050000        /* Firewire */
 149 #define BI_GEOM_IFACE_FIBRE     0x060000        /* Fibre channel */
 150 #define BI_GEOM_IFACE_OTHER     0xff0000
 151         unsigned int    cksum;                  /* MBR checksum */
 152         unsigned int    interface_path;         /* ISA iobase PCI bus/dev/fun */
 153         uint64_t        device_path;
 154         int             res0;                   /* future expansion; 0 now */
 155 #else
 156         unsigned int    cksum;                  /* MBR checksum */
 157         int             res0, res1, res2, res3; /* future expansion; 0 now */
 158 #endif
 159         struct mbr_partition dosparts[MBR_PART_COUNT]; /* MBR itself */
 160 } __packed;
 161
 162 struct btinfo_biosgeom {
 163         struct btinfo_common common;
 164         int num;
 165         struct bi_biosgeom_entry disk[1]; /* var len */
 166 };
 167
 168 struct bi_modulelist_entry {
 169         char path[80];
 170         int type;
 171         int len;
 172         uint32_t base;
 173 };
 174 #define BI_MODULE_NONE          0x00
 175 #define BI_MODULE_ELF           0x01
 176
 177 struct btinfo_modulelist {
 178         struct btinfo_common common;
 179         int num;
 180         uint32_t endpa;
 181         /* bi_modulelist_entry list follows */
 182 };
 183
 184 struct btinfo_framebuffer {
 185         struct btinfo_common common;
 186         uint64_t physaddr;
 187         uint32_t flags;
 188         uint32_t width;
 189         uint32_t height;
 190         uint16_t stride;
 191         uint8_t depth;
 192         uint8_t rnum;
 193         uint8_t gnum;
 194         uint8_t bnum;
 195         uint8_t rpos;
 196         uint8_t gpos;
 197         uint8_t bpos;
 198         uint16_t vbemode;
 199         uint8_t reserved[14];
 200 };
 201
 202 #endif /* _LOCORE */
 203
 204 #ifdef _KERNEL
 205
 206 #define BOOTINFO_MAXSIZE 4096
 207
 208 #ifndef _LOCORE
 209 /*
 210  * Structure that holds the information passed by the boot loader.
 211  */
 212 struct bootinfo {
 213         /* Number of bootinfo_* entries in bi_data. */
 214         uint32_t        bi_nentries;
 215
 216         /* Raw data of bootinfo entries.  The first one (if any) is
 217          * found at bi_data[0] and can be casted to (bootinfo_common *).
 218          * Once this is done, the following entry is found at 'len'
 219          * offset as specified by the previous entry. */
 220         uint8_t         bi_data[BOOTINFO_MAXSIZE - sizeof(uint32_t)];
 221 };
 222
 223 extern struct bootinfo bootinfo;
 224
 225 void *lookup_bootinfo(int);
 226 #endif /* _LOCORE */
 227
 228 #endif /* _KERNEL */