arch/mips/dec/prom/identify.c

   1 /*
   2  * identify.c: machine identification code.
   3  *
   4  * Copyright (C) 1998 Harald Koerfgen and Paul M. Antoine
   5  *
   6  * $Id: identify.c,v 1.2 1999/10/09 00:00:58 ralf Exp $
   7  */
   8 #include <linux/init.h>
   9 #include <linux/kernel.h>
  10 #include <linux/string.h>
  11
  12 #include <asm/bootinfo.h>
  13
  14 #include "dectypes.h"
  15 #include "prom.h"
  16
  17 extern char *(*prom_getenv)(char *);
  18 extern int (*prom_printf)(char *, ...);
  19 extern int (*rex_getsysid)(void);
  20
  21 extern unsigned long mips_machgroup;
  22 extern unsigned long mips_machtype;
  23
  24 void __init prom_identify_arch (unsigned int magic)
  25 {
  26         unsigned char dec_cpunum, dec_firmrev, dec_etc;
  27         int dec_systype;
  28         unsigned long dec_sysid;
  29
  30         if (magic != REX_PROM_MAGIC) {
  31                 dec_sysid = simple_strtoul(prom_getenv("systype"), (char **)0, 0);
  32         } else {
  33                 dec_sysid = rex_getsysid();
  34                 if (dec_sysid == 0) {
  35                         prom_printf("Zero sysid returned from PROMs! Assuming PMAX-like machine.\n");
  36                         dec_sysid = 1;
  37                 }
  38         }
  39
  40         dec_cpunum = (dec_sysid & 0xff000000) >> 24;
  41         dec_systype = (dec_sysid & 0xff0000) >> 16;
  42         dec_firmrev = (dec_sysid & 0xff00) >> 8;
  43         dec_etc = dec_sysid & 0xff;
  44
  45         /* We're obviously one of the DEC machines */
  46         mips_machgroup = MACH_GROUP_DEC;
  47
  48         /*
  49          * FIXME: This may not be an exhaustive list of DECStations/Servers!
  50          * Put all model-specific initialisation calls here.
  51          */
  52         prom_printf("This DECstation is a ");
  53
  54         switch (dec_systype) {
  55         case DS2100_3100:
  56                 prom_printf("DS2100/3100\n");
  57                 mips_machtype = MACH_DS23100;
  58                 break;
  59         case DS5100:            /* DS5100 MIPSMATE */
  60                 prom_printf("DS5100\n");
  61                 mips_machtype = MACH_DS5100;
  62                 break;
  63         case DS5000_200:        /* DS5000 3max */
  64                 prom_printf("DS5000/200\n");
  65                 mips_machtype = MACH_DS5000_200;
  66                 break;
  67         case DS5000_1XX:        /* DS5000/100 3min */
  68                 prom_printf("DS5000/1xx\n");
  69                 mips_machtype = MACH_DS5000_1XX;
  70                 break;
  71         case DS5000_2X0:        /* DS5000/240 3max+ */
  72                 prom_printf("DS5000/2x0\n");
  73                 mips_machtype = MACH_DS5000_2X0;
  74                 break;
  75         case DS5000_XX: /* Personal DS5000/2x */
  76                 prom_printf("Personal DS5000/xx\n");
  77                 mips_machtype = MACH_DS5000_XX;
  78                 break;
  79         case DS5800:            /* DS5800 Isis */
  80                 prom_printf("DS5800\n");
  81                 mips_machtype = MACH_DS5800;
  82                 break;
  83         case DS5400:            /* DS5400 MIPSfair */
  84                 prom_printf("DS5400\n");
  85                 mips_machtype = MACH_DS5400;
  86                 break;
  87         case DS5500:            /* DS5500 MIPSfair-2 */
  88                 prom_printf("DS5500\n");
  89                 mips_machtype = MACH_DS5500;
  90                 break;
  91         default:
  92                 prom_printf("unknown, id is %x", dec_systype);
  93                 mips_machtype = MACH_DSUNKNOWN;
  94                 break;
  95         }
  96 }
  97
  98