arch/mips/fw/arc/identify.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * identify.c: identify machine by looking up system identifier
   7  *
   8  * Copyright (C) 1998 Thomas Bogendoerfer
   9  *
  10  * This code is based on arch/mips/sgi/kernel/system.c, which is
  11  *
  12  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
  13  */
  14 #include <linux/bug.h>
  15 #include <linux/init.h>
  16 #include <linux/kernel.h>
  17 #include <linux/types.h>
  18 #include <linux/string.h>
  19
  20 #include <asm/sgialib.h>
  21 #include <asm/bootinfo.h>
  22
  23 struct smatch {
  24         char *arcname;
  25         char *liname;
  26         int flags;
  27 };
  28
  29 static struct smatch mach_table[] = {
  30         {
  31                 .arcname        = "SGI-IP22",
  32                 .liname         = "SGI Indy",
  33                 .flags          = PROM_FLAG_ARCS,
  34         }, {
  35                 .arcname        = "SGI-IP28",
  36                 .liname         = "SGI IP28",
  37                 .flags          = PROM_FLAG_ARCS,
  38         }, {
  39                 .arcname        = "SGI-IP30",
  40                 .liname         = "SGI Octane",
  41                 .flags          = PROM_FLAG_ARCS,
  42         }, {
  43                 .arcname        = "SGI-IP32",
  44                 .liname         = "SGI O2",
  45                 .flags          = PROM_FLAG_ARCS,
  46         }, {
  47                 .arcname        = "Microsoft-Jazz",
  48                 .liname         = "Jazz MIPS_Magnum_4000",
  49                 .flags          = 0,
  50         }, {
  51                 .arcname        = "PICA-61",
  52                 .liname         = "Jazz Acer_PICA_61",
  53                 .flags          = 0,
  54         }, {
  55                 .arcname        = "RM200PCI",
  56                 .liname         = "SNI RM200_PCI",
  57                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  58         }, {
  59                 .arcname        = "RM200PCI-R5K",
  60                 .liname         = "SNI RM200_PCI-R5K",
  61                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  62         }
  63 };
  64
  65 int prom_flags;
  66
  67 static struct smatch * __init string_to_mach(const char *s)
  68 {
  69         int i;
  70
  71         for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
  72                 if (!strcmp(s, mach_table[i].arcname))
  73                         return &mach_table[i];
  74         }
  75
  76         panic("Yeee, could not determine architecture type <%s>", s);
  77 }
  78
  79 char *system_type;
  80
  81 const char *get_system_type(void)
  82 {
  83         return system_type;
  84 }
  85
  86 static pcomponent * __init ArcGetChild(pcomponent *Current)
  87 {
  88         return (pcomponent *) ARC_CALL1(child_component, Current);
  89 }
  90
  91 void __init prom_identify_arch(void)
  92 {
  93         pcomponent *p;
  94         struct smatch *mach;
  95         const char *iname;
  96
  97         /*
  98          * The root component tells us what machine architecture we have here.
  99          */
 100         p = ArcGetChild(PROM_NULL_COMPONENT);
 101         if (p == NULL) {
 102                 iname = "Unknown";
 103         } else
 104                 iname = (char *) (long) p->iname;
 105
 106         printk("ARCH: %s\n", iname);
 107         mach = string_to_mach(iname);
 108         system_type = mach->liname;
 109
 110         prom_flags = mach->flags;
 111 }