arch/m68k/sun3/idprom.c

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 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 registerint 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 voidsun3_get_model(unsigned char* model)
 81 {
 82 registerint 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 }