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/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 flags;
  26 };
  27
  28 static struct smatch mach_table[] = {
  29         {
  30                 .arcname        = "SGI-IP22",
  31                 .liname         = "SGI Indy",
  32                 .flags          = PROM_FLAG_ARCS,
  33         }, {
  34                 .arcname        = "SGI-IP27",
  35                 .liname         = "SGI Origin",
  36                 .flags          = PROM_FLAG_ARCS,
  37         }, {
  38                 .arcname        = "SGI-IP28",
  39                 .liname         = "SGI IP28",
  40                 .flags          = PROM_FLAG_ARCS,
  41         }, {
  42                 .arcname        = "SGI-IP30",
  43                 .liname         = "SGI Octane",
  44                 .flags          = PROM_FLAG_ARCS,
  45         }, {
  46                 .arcname        = "SGI-IP32",
  47                 .liname         = "SGI O2",
  48                 .flags          = PROM_FLAG_ARCS,
  49         }, {
  50                 .arcname        = "Microsoft-Jazz",
  51                 .liname         = "Jazz MIPS_Magnum_4000",
  52                 .flags          = 0,
  53         }, {
  54                 .arcname        = "PICA-61",
  55                 .liname         = "Jazz Acer_PICA_61",
  56                 .flags          = 0,
  57         }, {
  58                 .arcname        = "RM200PCI",
  59                 .liname         = "SNI RM200_PCI",
  60                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  61         }, {
  62                 .arcname        = "RM200PCI-R5K",
  63                 .liname         = "SNI RM200_PCI-R5K",
  64                 .flags          = PROM_FLAG_DONT_FREE_TEMP,
  65         }
  66 };
  67
  68 int prom_flags;
  69
  70 static struct smatch * __init string_to_mach(const char *s)
  71 {
  72         int i;
  73
  74         for (i = 0; i < ARRAY_SIZE(mach_table); i++) {
  75                 if (!strcmp(s, mach_table[i].arcname))
  76                         return &mach_table[i];
  77         }
  78
  79         panic("Yeee, could not determine architecture type <%s>", s);
  80 }
  81
  82 char *system_type;
  83
  84 const char *get_system_type(void)
  85 {
  86         return system_type;
  87 }
  88
  89 void __init prom_identify_arch(void)
  90 {
  91         pcomponent *p;
  92         struct smatch *mach;
  93         const char *iname;
  94
  95         /*
  96          * The root component tells us what machine architecture we have here.
  97          */
  98         p = ArcGetChild(PROM_NULL_COMPONENT);
  99         if (p == NULL) {
 100 #ifdef CONFIG_SGI_IP27
 101                 /* IP27 PROM misbehaves, seems to not implement ARC
 102                    GetChild().  So we just assume it's an IP27.  */
 103                 iname = "SGI-IP27";
 104 #else
 105                 iname = "Unknown";
 106 #endif
 107         } else
 108                 iname = (char *) (long) p->iname;
 109
 110         printk("ARCH: %s\n", iname);
 111         mach = string_to_mach(iname);
 112         system_type = mach->liname;
 113
 114         prom_flags = mach->flags;
 115 }