arch/m68k/sun3/idprom.c

   1 /* $Id: idprom.c,v 1.22 1996/11/13 05:09:25 davem Exp $
   2  * idprom.c: Routines to load the idprom into kernel addresses and
   3  *           interpret the data contained within.
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  * Sun3/3x models added by David Monro (davidm@psrg.cs.usyd.edu.au)
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/types.h>
  11 #include <linux/init.h>
  12 #include <linux/string.h>
  13
  14 #include <asm/oplib.h>
  15 #include <asm/idprom.h>
  16 #include <asm/machines.h>  /* Fun with Sun released architectures. */
  17
  18 struct idprom *idprom;
  19 static struct idprom idprom_buffer;
  20
  21 /* Here is the master table of Sun machines which use some implementation
  22  * of the Sparc CPU and have a meaningful IDPROM machtype value that we
  23  * know about.  See asm-sparc/machines.h for empirical constants.
  24  */
  25 struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
  26 /* First, Sun3's */
  27 { "Sun 3/160 Series", (SM_SUN3 | SM_3_160) },
  28 { "Sun 3/50", (SM_SUN3 | SM_3_50) },
  29 { "Sun 3/260 Series", (SM_SUN3 | SM_3_260) },
  30 { "Sun 3/110 Series", (SM_SUN3 | SM_3_110) },
  31 { "Sun 3/60", (SM_SUN3 | SM_3_60) },
  32 { "Sun 3/E", (SM_SUN3 | SM_3_E) },
  33 /* Now, Sun3x's */
  34 { "Sun 3/460 Series", (SM_SUN3 | SM_3_460) },
  35 { "Sun 3/80", (SM_SUN3 | SM_3_80) },
  36 /* Then, Sun4's */
  37 //{ "Sun 4/100 Series", (SM_SUN4 | SM_4_110) },
  38 //{ "Sun 4/200 Series", (SM_SUN4 | SM_4_260) },
  39 //{ "Sun 4/300 Series", (SM_SUN4 | SM_4_330) },
  40 //{ "Sun 4/400 Series", (SM_SUN4 | SM_4_470) },
  41 /* And now, Sun4c's */
  42 //{ "Sun4c SparcStation 1", (SM_SUN4C | SM_4C_SS1) },
  43 //{ "Sun4c SparcStation IPC", (SM_SUN4C | SM_4C_IPC) },
  44 //{ "Sun4c SparcStation 1+", (SM_SUN4C | SM_4C_SS1PLUS) },
  45 //{ "Sun4c SparcStation SLC", (SM_SUN4C | SM_4C_SLC) },
  46 //{ "Sun4c SparcStation 2", (SM_SUN4C | SM_4C_SS2) },
  47 //{ "Sun4c SparcStation ELC", (SM_SUN4C | SM_4C_ELC) },
  48 //{ "Sun4c SparcStation IPX", (SM_SUN4C | SM_4C_IPX) },
  49 /* Finally, early Sun4m's */
  50 //{ "Sun4m SparcSystem600", (SM_SUN4M | SM_4M_SS60) },
  51 //{ "Sun4m SparcStation10/20", (SM_SUN4M | SM_4M_SS50) },
  52 //{ "Sun4m SparcStation5", (SM_SUN4M | SM_4M_SS40) },
  53 /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
  54 //{ "Sun4M OBP based system", (SM_SUN4M_OBP | 0x0) }
  55 };
  56
  57 static void __init display_system_type(unsigned char machtype)
  58 {
  59         register int i;
  60
  61         for (i = 0; i < NUM_SUN_MACHINES; i++) {
  62                 if(Sun_Machines[i].id_machtype == machtype) {
  63                         if (machtype != (SM_SUN4M_OBP | 0x00))
  64                                 printk("TYPE: %s\n", Sun_Machines[i].name);
  65                         else {
  66 #if 0
  67                                 prom_getproperty(prom_root_node, "banner-name",
  68                                                  sysname, sizeof(sysname));
  69                                 printk("TYPE: %s\n", sysname);
  70 #endif
  71                         }
  72                         return;
  73                 }
  74         }
  75
  76         prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype);
  77         prom_halt();
  78 }
  79
  80 void sun3_get_model(unsigned char* model)
  81 {
  82         register int i;
  83
  84         for (i = 0; i < NUM_SUN_MACHINES; i++) {
  85                 if(Sun_Machines[i].id_machtype == idprom->id_machtype) {
  86                         strcpy(model, Sun_Machines[i].name);
  87                         return;
  88                 }
  89         }
  90 }
  91
  92
  93
  94 /* Calculate the IDPROM checksum (xor of the data bytes). */
  95 static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
  96 {
  97         unsigned char cksum, i, *ptr = (unsigned char *)idprom;
  98
  99         for (i = cksum = 0; i <= 0x0E; i++)
 100                 cksum ^= *ptr++;
 101
 102         return cksum;
 103 }
 104
 105 /* Create a local IDPROM copy, verify integrity, and display information. */
 106 void __init idprom_init(void)
 107 {
 108         prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
 109
 110         idprom = &idprom_buffer;
 111
 112         if (idprom->id_format != 0x01)  {
 113                 prom_printf("IDPROM: Unknown format type!\n");
 114                 prom_halt();
 115         }
 116
 117         if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
 118                 prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n",
 119                             idprom->id_cksum, calc_idprom_cksum(idprom));
 120                 prom_halt();
 121         }
 122
 123         display_system_type(idprom->id_machtype);
 124
 125         printk("Ethernet address: %x:%x:%x:%x:%x:%x\n",
 126                     idprom->id_ethaddr[0], idprom->id_ethaddr[1],
 127                     idprom->id_ethaddr[2], idprom->id_ethaddr[3],
 128                     idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
 129 }