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-IP27",
  36                 .liname         = "SGI Origin",
  37                 .flags          = PROM_FLAG_ARCS,
  38         }, {
  39                 .arcname        = "SGI-IP28",
  40                 .liname         = "SGI IP28",
  41                 .flags          = PROM_FLAG_ARCS,
  42         }, {
  43                 .arcname        = "SGI-IP30",
  44                 .liname         = "SGI Octane",
  45                 .flags          = PROM_FLAG_ARCS,
  46         }, {
  47                 .arcname        = "SGI-IP32",
  48                 .liname         = "SGI O2",
  49                 .flags          = PROM_FLAG_ARCS,
  50         }, {
  51                 .arcname        = "Microsoft-Jazz",
  52                 .liname         = "Jazz MIPS_Magnum_4000",
  53                 .flags          = 0,
  54         }, {
  55                 .arcname        = "PICA-61",
  56                 .liname         = "Jazz Acer_PICA_61",
  57                 .flags          = 0,
  58         }, {
  59                 .arcname        = "RM200PCI",
  60                 .liname         = "SNI RM200_PCI",
  61                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  62         }, {
  63                 .arcname        = "RM200PCI-R5K",
  64                 .liname         = "SNI RM200_PCI-R5K",
  65                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  66         }
  67 };
  68
  69 int prom_flags;
  70
  71 static struct smatch * __init string_to_mach(const char *s)
  72 {
  73         int i;
  74
  75         for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
  76                 if (!strcmp(s, mach_table[i].arcname))
  77                         return &mach_table[i];
  78         }
  79
  80         panic("Yeee, could not determine architecture type <%s>", s);
  81 }
  82
  83 char *system_type;
  84
  85 const char *get_system_type(void)
  86 {
  87         return system_type;
  88 }
  89
  90 void __init prom_identify_arch(void)
  91 {
  92         pcomponent *p;
  93         struct smatch *mach;
  94         const char *iname;
  95
  96         /*
  97          * The root component tells us what machine architecture we have here.
  98          */
  99         p = ArcGetChild(PROM_NULL_COMPONENT);
 100         if (p == NULL) {
 101 #ifdef CONFIG_SGI_IP27
 102                 /* IP27 PROM misbehaves, seems to not implement ARC
 103                    GetChild().  So we just assume it's an IP27.  */
 104                 iname = "SGI-IP27";
 105 #else
 106                 iname = "Unknown";
 107 #endif
 108         } else
 109                 iname = (char *) (long) p->iname;
 110
 111         printk("ARCH: %s\n", iname);
 112         mach = string_to_mach(iname);
 113         system_type = mach->liname;
 114
 115         prom_flags = mach->flags;
 116 }