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 (dm@engr.sgi.com)
  13  */
  14 #include <linux/init.h>
  15 #include <linux/kernel.h>
  16 #include <linux/types.h>
  17 #include <linux/string.h>
  18
  19 #include <asm/sgialib.h>
  20 #include <asm/bootinfo.h>
  21
  22 struct smatch {
  23         char *arcname;
  24         char *liname;
  25         int group;
  26         int type;
  27         int flags;
  28 };
  29
  30 static struct smatch mach_table[] = {
  31         {
  32                 .arcname        = "SGI-IP22",
  33                 .liname         = "SGI Indy",
  34                 .group          = MACH_GROUP_SGI,
  35                 .type           = MACH_SGI_IP22,
  36                 .flags          = PROM_FLAG_ARCS,
  37         }, {
  38                 .arcname        = "SGI-IP27",
  39                 .liname         = "SGI Origin",
  40                 .group          = MACH_GROUP_SGI,
  41                 .type           = MACH_SGI_IP27,
  42                 .flags          = PROM_FLAG_ARCS,
  43         }, {
  44                 .arcname        = "SGI-IP28",
  45                 .liname         = "SGI IP28",
  46                 .group          = MACH_GROUP_SGI,
  47                 .type           = MACH_SGI_IP28,
  48                 .flags          = PROM_FLAG_ARCS,
  49         }, {
  50                 .arcname        = "SGI-IP30",
  51                 .liname         = "SGI Octane",
  52                 .group          = MACH_GROUP_SGI,
  53                 .type           = MACH_SGI_IP30,
  54                 .flags          = PROM_FLAG_ARCS,
  55         }, {
  56                 .arcname        = "SGI-IP32",
  57                 .liname         = "SGI O2",
  58                 .group          = MACH_GROUP_SGI,
  59                 .type           = MACH_SGI_IP32,
  60                 .flags          = PROM_FLAG_ARCS,
  61         }, {
  62                 .arcname        = "Microsoft-Jazz",
  63                 .liname         = "Jazz MIPS_Magnum_4000",
  64                 .group          = MACH_GROUP_JAZZ,
  65                 .type           = MACH_MIPS_MAGNUM_4000,
  66                 .flags          = 0,
  67         }, {
  68                 .arcname        = "PICA-61",
  69                 .liname         = "Jazz Acer_PICA_61",
  70                 .group          = MACH_GROUP_JAZZ,
  71                 .type           = MACH_ACER_PICA_61,
  72                 .flags          = 0,
  73         }, {
  74                 .arcname        = "RM200PCI",
  75                 .liname         = "SNI RM200_PCI",
  76                 .group          = MACH_GROUP_SNI_RM,
  77                 .type           = MACH_SNI_RM200_PCI,
  78                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  79         }
  80 };
  81
  82 int prom_flags;
  83
  84 static struct smatch * __init string_to_mach(const char *s)
  85 {
  86         int i;
  87
  88         for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
  89                 if (!strcmp(s, mach_table[i].arcname))
  90                         return &mach_table[i];
  91         }
  92
  93         panic("Yeee, could not determine architecture type <%s>", s);
  94 }
  95
  96 char *system_type;
  97
  98 const char *get_system_type(void)
  99 {
 100         return system_type;
 101 }
 102
 103 void __init prom_identify_arch(void)
 104 {
 105         pcomponent *p;
 106         struct smatch *mach;
 107         const char *iname;
 108
 109         /*
 110          * The root component tells us what machine architecture we have here.
 111          */
 112         p = ArcGetChild(PROM_NULL_COMPONENT);
 113         if (p == NULL) {
 114 #ifdef CONFIG_SGI_IP27
 115                 /* IP27 PROM misbehaves, seems to not implement ARC
 116                    GetChild().  So we just assume it's an IP27.  */
 117                 iname = "SGI-IP27";
 118 #else
 119                 iname = "Unknown";
 120 #endif
 121         } else
 122                 iname = (char *) (long) p->iname;
 123
 124         printk("ARCH: %s\n", iname);
 125         mach = string_to_mach(iname);
 126         system_type = mach->liname;
 127
 128         mips_machgroup = mach->group;
 129         mips_machtype = mach->type;
 130         prom_flags = mach->flags;
 131 }