include/asm-ppc/bootinfo.h

   1 /*
   2 ** asm/bootinfo.h -- Definition of the Linux/m68k boot information structure
   3 **
   4 ** Copyright 1992 by Greg Harp
   5 **
   6 ** This file is subject to the terms and conditions of the GNU General Public
   7 ** License.  See the file COPYING in the main directory of this archive
   8 ** for more details.
   9 **
  10 ** Created 09/29/92 by Greg Harp
  11 **
  12 ** 5/2/94 Roman Hodek:
  13 **   Added bi_atari part of the machine dependent union bi_un; for now it
  14 **   contains just a model field to distinguish between TT and Falcon.
  15 ** 26/7/96 Roman Zippel:
  16 **   Renamed to setup.h; added some useful macros to allow gcc some
  17 **   optimizations if possible.
  18 ** 5/10/96 Geert Uytterhoeven:
  19 **   Redesign of the boot information structure; renamed to bootinfo.h again
  20 ** 27/11/96 Geert Uytterhoeven:
  21 **   Backwards compatibility with bootinfo interface version 1.0
  22 */
  23
  24 #ifndef _BOOTINFO_H
  25 #define _BOOTINFO_H
  26
  27
  28     /*
  29      *  Bootinfo definitions
  30      *
  31      *  This is an easily parsable and extendable structure containing all
  32      *  information to be passed from the bootstrap to the kernel.
  33      *
  34      *  This way I hope to keep all future changes back/forewards compatible.
  35      *  Thus, keep your fingers crossed...
  36      *
  37      *  This structure is copied right after the kernel bss by the bootstrap
  38      *  routine.
  39      */
  40
  41 #ifndef __ASSEMBLY__
  42
  43 struct bi_record {
  44     unsigned short tag;                 /* tag ID */
  45     unsigned short size;                /* size of record (in bytes) */
  46     unsigned long data[0];              /* data */
  47 };
  48
  49 #else /* __ASSEMBLY__ */
  50
  51 BIR_tag         = 0
  52 BIR_size        = BIR_tag+2
  53 BIR_data        = BIR_size+2
  54
  55 #endif /* __ASSEMBLY__ */
  56
  57
  58     /*
  59      *  Tag Definitions
  60      *
  61      *  Machine independent tags start counting from 0x0000
  62      *  Machine dependent tags start counting from 0x8000
  63      */
  64
  65 #define BI_LAST                 0x0000  /* last record (sentinel) */
  66 #define BI_MACHTYPE             0x0001  /* machine type (u_long) */
  67 #define BI_CPUTYPE              0x0002  /* cpu type (u_long) */
  68 #define BI_FPUTYPE              0x0003  /* fpu type (u_long) */
  69 #define BI_MMUTYPE              0x0004  /* mmu type (u_long) */
  70 #define BI_MEMCHUNK             0x0005  /* memory chunk address and size */
  71                                         /* (struct mem_info) */
  72 #define BI_RAMDISK              0x0006  /* ramdisk address and size */
  73                                         /* (struct mem_info) */
  74 #define BI_COMMAND_LINE         0x0007  /* kernel command line parameters */
  75                                         /* (string) */
  76
  77     /*
  78      *  Amiga-specific tags
  79      */
  80
  81 #define BI_AMIGA_MODEL          0x8000  /* model (u_long) */
  82 #define BI_AMIGA_AUTOCON        0x8001  /* AutoConfig device */
  83                                         /* (struct ConfigDev) */
  84 #define BI_AMIGA_CHIP_SIZE      0x8002  /* size of Chip RAM (u_long) */
  85 #define BI_AMIGA_VBLANK         0x8003  /* VBLANK frequency (u_char) */
  86 #define BI_AMIGA_PSFREQ         0x8004  /* power supply frequency (u_char) */
  87 #define BI_AMIGA_ECLOCK         0x8005  /* EClock frequency (u_long) */
  88 #define BI_AMIGA_CHIPSET        0x8006  /* native chipset present (u_long) */
  89 #define BI_AMIGA_SERPER         0x8007  /* serial port period (u_short) */
  90
  91     /*
  92      *  Atari-specific tags
  93      */
  94
  95 #define BI_ATARI_MCH_COOKIE     0x8000  /* _MCH cookie from TOS (u_long) */
  96 #define BI_ATARI_MCH_TYPE       0x8001  /* special machine type (u_long) */
  97                                         /* (values are ATARI_MACH_* defines */
  98
  99 /* mch_cookie values (upper word) */
 100 #define ATARI_MCH_ST            0
 101 #define ATARI_MCH_STE           1
 102 #define ATARI_MCH_TT            2
 103 #define ATARI_MCH_FALCON        3
 104
 105 /* mch_type values */
 106 #define ATARI_MACH_NORMAL       0       /* no special machine type */
 107 #define ATARI_MACH_MEDUSA       1       /* Medusa 040 */
 108 #define ATARI_MACH_HADES        2       /* Hades 040 or 060 */
 109 #define ATARI_MACH_AB40         3       /* Afterburner040 on Falcon */
 110
 111     /*
 112      *  Macintosh-specific tags (all u_long)
 113      */
 114
 115 #define BI_MAC_MODEL            0x8000  /* Mac Gestalt ID (model type) */
 116 #define BI_MAC_VADDR            0x8001  /* Mac video base address */
 117 #define BI_MAC_VDEPTH           0x8002  /* Mac video depth */
 118 #define BI_MAC_VROW             0x8003  /* Mac video rowbytes */
 119 #define BI_MAC_VDIM             0x8004  /* Mac video dimensions */
 120 #define BI_MAC_VLOGICAL         0x8005  /* Mac video logical base */
 121 #define BI_MAC_SCCBASE          0x8006  /* Mac SCC base address */
 122 #define BI_MAC_BTIME            0x8007  /* Mac boot time */
 123 #define BI_MAC_GMTBIAS          0x8008  /* Mac GMT timezone offset */
 124 #define BI_MAC_MEMSIZE          0x8009  /* Mac RAM size (sanity check) */
 125 #define BI_MAC_CPUID            0x800a  /* Mac CPU type (sanity check) */
 126 #define BI_MAC_ROMBASE          0x800b  /* Mac system ROM base address */
 127
 128     /*
 129      *  Macintosh hardware profile data - unused, see macintosh.h for
 130      *  resonable type values
 131      */
 132
 133 #define BI_MAC_VIA1BASE         0x8010  /* Mac VIA1 base address (always present) */
 134 #define BI_MAC_VIA2BASE         0x8011  /* Mac VIA2 base address (type varies) */
 135 #define BI_MAC_VIA2TYPE         0x8012  /* Mac VIA2 type (VIA, RBV, OSS) */
 136 #define BI_MAC_ADBTYPE          0x8013  /* Mac ADB interface type */
 137 #define BI_MAC_ASCBASE          0x8014  /* Mac Apple Sound Chip base address */
 138 #define BI_MAC_SCSI5380         0x8015  /* Mac NCR 5380 SCSI (base address, multi) */
 139 #define BI_MAC_SCSIDMA          0x8016  /* Mac SCSI DMA (base address) */
 140 #define BI_MAC_SCSI5396         0x8017  /* Mac NCR 53C96 SCSI (base address, multi) */
 141 #define BI_MAC_IDETYPE          0x8018  /* Mac IDE interface type */
 142 #define BI_MAC_IDEBASE          0x8019  /* Mac IDE interface base address */
 143 #define BI_MAC_NUBUS            0x801a  /* Mac Nubus type (none, regular, pseudo) */
 144 #define BI_MAC_SLOTMASK         0x801b  /* Mac Nubus slots present */
 145 #define BI_MAC_SCCTYPE          0x801c  /* Mac SCC serial type (normal, IOP) */
 146 #define BI_MAC_ETHTYPE          0x801d  /* Mac builtin ethernet type (Sonic, MACE */
 147 #define BI_MAC_ETHBASE          0x801e  /* Mac builtin ethernet base address */
 148 #define BI_MAC_PMU              0x801f  /* Mac power managment / poweroff hardware */
 149 #define BI_MAC_IOP_SWIM         0x8020  /* Mac SWIM floppy IOP */
 150 #define BI_MAC_IOP_ADB          0x8021  /* Mac ADB IOP */
 151
 152     /*
 153      * Mac: compatibility with old booter data format (temporarily)
 154      * Fields unused with the new bootinfo can be deleted now; instead of
 155      * adding new fields the struct might be splitted into a hardware address
 156      * part and a hardware type part
 157      */
 158
 159 #ifndef __ASSEMBLY__
 160
 161 struct mac_booter_data
 162 {
 163         unsigned long videoaddr;
 164         unsigned long videorow;
 165         unsigned long videodepth;
 166         unsigned long dimensions;
 167         unsigned long args;
 168         unsigned long boottime;
 169         unsigned long gmtbias;
 170         unsigned long bootver;
 171         unsigned long videological;
 172         unsigned long sccbase;
 173         unsigned long id;
 174         unsigned long memsize;
 175         unsigned long serialmf;
 176         unsigned long serialhsk;
 177         unsigned long serialgpi;
 178         unsigned long printmf;
 179         unsigned long printhsk;
 180         unsigned long printgpi;
 181         unsigned long cpuid;
 182         unsigned long rombase;
 183         unsigned long adbdelay;
 184         unsigned long timedbra;
 185 };
 186
 187 extern struct mac_booter_data
 188         mac_bi_data;
 189
 190 #endif
 191
 192     /*
 193      * Stuff for bootinfo interface versioning
 194      *
 195      * At the start of kernel code, a 'struct bootversion' is located.
 196      * bootstrap checks for a matching version of the interface before booting
 197      * a kernel, to avoid user confusion if kernel and bootstrap don't work
 198      * together :-)
 199      *
 200      * If incompatible changes are made to the bootinfo interface, the major
 201      * number below should be stepped (and the minor reset to 0) for the
 202      * appropriate machine. If a change is backward-compatible, the minor
 203      * should be stepped. "Backwards-compatible" means that booting will work,
 204      * but certain features may not.
 205      */
 206
 207 #define BOOTINFOV_MAGIC                 0x4249561A      /* 'BIV^Z' */
 208 #define MK_BI_VERSION(major,minor)      (((major)<<16)+(minor))
 209 #define BI_VERSION_MAJOR(v)             (((v) >> 16) & 0xffff)
 210 #define BI_VERSION_MINOR(v)             ((v) & 0xffff)
 211
 212 #ifndef __ASSEMBLY__
 213
 214 struct bootversion {
 215     unsigned short branch;
 216     unsigned long magic;
 217     struct {
 218         unsigned long machtype;
 219         unsigned long version;
 220     } machversions[0];
 221 };
 222
 223 #endif /* __ASSEMBLY__ */
 224
 225 #define AMIGA_BOOTI_VERSION    MK_BI_VERSION( 2, 0 )
 226 #define ATARI_BOOTI_VERSION    MK_BI_VERSION( 2, 1 )
 227 #define MAC_BOOTI_VERSION      MK_BI_VERSION( 2, 0 )
 228 #define MVME16x_BOOTI_VERSION  MK_BI_VERSION( 2, 0 )
 229 #define BVME6000_BOOTI_VERSION MK_BI_VERSION( 2, 0 )
 230
 231
 232 #ifdef BOOTINFO_COMPAT_1_0
 233
 234     /*
 235      *  Backwards compatibility with bootinfo interface version 1.0
 236      */
 237
 238 #define COMPAT_AMIGA_BOOTI_VERSION    MK_BI_VERSION( 1, 0 )
 239 #define COMPAT_ATARI_BOOTI_VERSION    MK_BI_VERSION( 1, 0 )
 240 #define COMPAT_MAC_BOOTI_VERSION      MK_BI_VERSION( 1, 0 )
 241
 242 #include <linux/zorro.h>
 243
 244 #define COMPAT_NUM_AUTO    16
 245
 246 struct compat_bi_Amiga {
 247     int model;
 248     int num_autocon;
 249     struct ConfigDev autocon[COMPAT_NUM_AUTO];
 250     unsigned long chip_size;
 251     unsigned char vblank;
 252     unsigned char psfreq;
 253     unsigned long eclock;
 254     unsigned long chipset;
 255     unsigned long hw_present;
 256 };
 257
 258 struct compat_bi_Atari {
 259     unsigned long hw_present;
 260     unsigned long mch_cookie;
 261 };
 262
 263 #ifndef __ASSEMBLY__
 264
 265 #define MACHW_DECLARE(name)    unsigned name : 1
 266 #define MACHW_SET(name)                (boot_info.bi_mac.hw_present.name = 1)
 267 #define MACHW_PRESENT(name)    (boot_info.bi_mac.hw_present.name)
 268
 269 struct compat_bi_Macintosh
 270 {
 271         unsigned long videoaddr;
 272         unsigned long videorow;
 273         unsigned long videodepth;
 274         unsigned long dimensions;
 275         unsigned long args;
 276         unsigned long boottime;
 277         unsigned long gmtbias;
 278         unsigned long bootver;
 279         unsigned long videological;
 280         unsigned long sccbase;
 281         unsigned long id;
 282         unsigned long memsize;
 283         unsigned long serialmf;
 284         unsigned long serialhsk;
 285         unsigned long serialgpi;
 286         unsigned long printmf;
 287         unsigned long printhsk;
 288         unsigned long printgpi;
 289         unsigned long cpuid;
 290         unsigned long rombase;
 291         unsigned long adbdelay;
 292         unsigned long timedbra;
 293         struct {
 294                 /* video hardware */
 295                 /* sound hardware */
 296                 /* disk storage interfaces */
 297                 MACHW_DECLARE(MAC_SCSI);        /* Directly mapped NCR5380 */
 298                 MACHW_DECLARE(IDE);             /* IDE Interface */
 299                 /* other I/O hardware */
 300                 MACHW_DECLARE(SCC);             /* Serial Communications Contr. */
 301                 /* DMA */
 302                 MACHW_DECLARE(SCSI_DMA);        /* DMA for the NCR5380 */
 303                 /* real time clocks */
 304                 MACHW_DECLARE(RTC_CLK);         /* clock chip */
 305                 /* supporting hardware */
 306                 MACHW_DECLARE(VIA1);            /* Versatile Interface Ad. 1 */
 307                 MACHW_DECLARE(VIA2);            /* Versatile Interface Ad. 2 */
 308                 MACHW_DECLARE(RBV);             /* Versatile Interface Ad. 2+ */
 309                 /* NUBUS */
 310                 MACHW_DECLARE(NUBUS);           /* NUBUS */
 311         } hw_present;
 312 };
 313 #else
 314
 315 #define BI_videoaddr    BI_un
 316 #define BI_videorow     BI_videoaddr+4
 317 #define BI_videodepth   BI_videorow+4
 318 #define BI_dimensions   BI_videodepth+4
 319 #define BI_args         BI_dimensions+4
 320 #define BI_cpuid        BI_args+56
 321
 322 #endif
 323
 324 struct compat_mem_info {
 325     unsigned long addr;
 326     unsigned long size;
 327 };
 328
 329 #define COMPAT_NUM_MEMINFO  4
 330
 331 #define COMPAT_CPUB_68020 0
 332 #define COMPAT_CPUB_68030 1
 333 #define COMPAT_CPUB_68040 2
 334 #define COMPAT_CPUB_68060 3
 335 #define COMPAT_FPUB_68881 5
 336 #define COMPAT_FPUB_68882 6
 337 #define COMPAT_FPUB_68040 7
 338 #define COMPAT_FPUB_68060 8
 339
 340 #define COMPAT_CPU_68020    (1<<COMPAT_CPUB_68020)
 341 #define COMPAT_CPU_68030    (1<<COMPAT_CPUB_68030)
 342 #define COMPAT_CPU_68040    (1<<COMPAT_CPUB_68040)
 343 #define COMPAT_CPU_68060    (1<<COMPAT_CPUB_68060)
 344 #define COMPAT_CPU_MASK     (31)
 345 #define COMPAT_FPU_68881    (1<<COMPAT_FPUB_68881)
 346 #define COMPAT_FPU_68882    (1<<COMPAT_FPUB_68882)
 347 #define COMPAT_FPU_68040    (1<<COMPAT_FPUB_68040)
 348 #define COMPAT_FPU_68060    (1<<COMPAT_FPUB_68060)
 349 #define COMPAT_FPU_MASK     (0xfe0)
 350
 351 #define COMPAT_CL_SIZE      (256)
 352
 353 struct compat_bootinfo {
 354     unsigned long machtype;
 355     unsigned long cputype;
 356     struct compat_mem_info memory[COMPAT_NUM_MEMINFO];
 357     int num_memory;
 358     unsigned long ramdisk_size;
 359     unsigned long ramdisk_addr;
 360     char command_line[COMPAT_CL_SIZE];
 361     union {
 362         struct compat_bi_Amiga     bi_ami;
 363         struct compat_bi_Atari     bi_ata;
 364         struct compat_bi_Macintosh bi_mac;
 365     } bi_un;
 366 };
 367
 368 #define bi_amiga        bi_un.bi_ami
 369 #define bi_atari        bi_un.bi_ata
 370 #define bi_mac          bi_un.bi_mac
 371
 372 #endif /* BOOTINFO_COMPAT_1_0 */
 373
 374
 375 #endif /* _BOOTINFO_H */