LXR linux/arch/m68k/sun3/idprom.c

   1/*
   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/module.h>
  10#include <linux/kernel.h>
  11#include <linux/types.h>
  12#include <linux/init.h>
  13#include <linux/string.h>
  14
  15#include <asm/oplib.h>
  16#include <asm/idprom.h>
  17#include <asm/machines.h>  /* Fun with Sun released architectures. */
  18
  19struct idprom *idprom;
  20EXPORT_SYMBOL(idprom);
  21
  22static struct idprom idprom_buffer;
  23
  24/* Here is the master table of Sun machines which use some implementation
  25 * of the Sparc CPU and have a meaningful IDPROM machtype value that we
  26 * know about.  See asm-sparc/machines.h for empirical constants.
  27 */
  28static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
  29/* First, Sun3's */
  30    { .name = "Sun 3/160 Series",       .id_machtype = (SM_SUN3 | SM_3_160) },
  31    { .name = "Sun 3/50",               .id_machtype = (SM_SUN3 | SM_3_50) },
  32    { .name = "Sun 3/260 Series",       .id_machtype = (SM_SUN3 | SM_3_260) },
  33    { .name = "Sun 3/110 Series",       .id_machtype = (SM_SUN3 | SM_3_110) },
  34    { .name = "Sun 3/60",               .id_machtype = (SM_SUN3 | SM_3_60) },
  35    { .name = "Sun 3/E",                .id_machtype = (SM_SUN3 | SM_3_E) },
  36/* Now, Sun3x's */
  37    { .name = "Sun 3/460 Series",       .id_machtype = (SM_SUN3X | SM_3_460) },
  38    { .name = "Sun 3/80",               .id_machtype = (SM_SUN3X | SM_3_80) },
  39/* Then, Sun4's */
  40// { .name = "Sun 4/100 Series",        .id_machtype = (SM_SUN4 | SM_4_110) },
  41// { .name = "Sun 4/200 Series",        .id_machtype = (SM_SUN4 | SM_4_260) },
  42// { .name = "Sun 4/300 Series",        .id_machtype = (SM_SUN4 | SM_4_330) },
  43// { .name = "Sun 4/400 Series",        .id_machtype = (SM_SUN4 | SM_4_470) },
  44/* And now, Sun4c's */
  45// { .name = "Sun4c SparcStation 1",    .id_machtype = (SM_SUN4C | SM_4C_SS1) },
  46// { .name = "Sun4c SparcStation IPC",  .id_machtype = (SM_SUN4C | SM_4C_IPC) },
  47// { .name = "Sun4c SparcStation 1+",   .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) },
  48// { .name = "Sun4c SparcStation SLC",  .id_machtype = (SM_SUN4C | SM_4C_SLC) },
  49// { .name = "Sun4c SparcStation 2",    .id_machtype = (SM_SUN4C | SM_4C_SS2) },
  50// { .name = "Sun4c SparcStation ELC",  .id_machtype = (SM_SUN4C | SM_4C_ELC) },
  51// { .name = "Sun4c SparcStation IPX",  .id_machtype = (SM_SUN4C | SM_4C_IPX) },
  52/* Finally, early Sun4m's */
  53// { .name = "Sun4m SparcSystem600",    .id_machtype = (SM_SUN4M | SM_4M_SS60) },
  54// { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
  55// { .name = "Sun4m SparcStation5",     .id_machtype = (SM_SUN4M | SM_4M_SS40) },
  56/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
  57// { .name = "Sun4M OBP based system",  .id_machtype = (SM_SUN4M_OBP | 0x0) }
  58};
  59
  60static void __init display_system_type(unsigned char machtype)
  61{
  62        register int i;
  63
  64        for (i = 0; i < NUM_SUN_MACHINES; i++) {
  65                if(Sun_Machines[i].id_machtype == machtype) {
  66                        if (machtype != (SM_SUN4M_OBP | 0x00))
  67                                printk("TYPE: %s\n", Sun_Machines[i].name);
  68                        else {
  69#if 0
  70                                prom_getproperty(prom_root_node, "banner-name",
  71                                                 sysname, sizeof(sysname));
  72                                printk("TYPE: %s\n", sysname);
  73#endif
  74                        }
  75                        return;
  76                }
  77        }
  78
  79        prom_printf("IDPROM: Bogus id_machtype value, 0x%x\n", machtype);
  80        prom_halt();
  81}
  82
  83void sun3_get_model(unsigned char* model)
  84{
  85        register int i;
  86
  87        for (i = 0; i < NUM_SUN_MACHINES; i++) {
  88                if(Sun_Machines[i].id_machtype == idprom->id_machtype) {
  89                        strcpy(model, Sun_Machines[i].name);
  90                        return;
  91                }
  92        }
  93}
  94
  95
  96
  97/* Calculate the IDPROM checksum (xor of the data bytes). */
  98static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
  99{
 100        unsigned char cksum, i, *ptr = (unsigned char *)idprom;
 101
 102        for (i = cksum = 0; i <= 0x0E; i++)
 103                cksum ^= *ptr++;
 104
 105        return cksum;
 106}
 107
 108/* Create a local IDPROM copy, verify integrity, and display information. */
 109void __init idprom_init(void)
 110{
 111        prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
 112
 113        idprom = &idprom_buffer;
 114
 115        if (idprom->id_format != 0x01)  {
 116                prom_printf("IDPROM: Unknown format type!\n");
 117                prom_halt();
 118        }
 119
 120        if (idprom->id_cksum != calc_idprom_cksum(idprom)) {
 121                prom_printf("IDPROM: Checksum failure (nvram=%x, calc=%x)!\n",
 122                            idprom->id_cksum, calc_idprom_cksum(idprom));
 123                prom_halt();
 124        }
 125
 126        display_system_type(idprom->id_machtype);
 127
 128        printk("Ethernet address: %x:%x:%x:%x:%x:%x\n",
 129                    idprom->id_ethaddr[0], idprom->id_ethaddr[1],
 130                    idprom->id_ethaddr[2], idprom->id_ethaddr[3],
 131                    idprom->id_ethaddr[4], idprom->id_ethaddr[5]);
 132}
 133