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/arch/m68k/sun3/idprom.c

https://bitbucket.org/evzijst/gittest
C | 129 lines | 75 code | 20 blank | 34 comment | 14 complexity | 480a28d332b8e66f2c66c8a605da572b MD5 | raw file
  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
 18struct idprom *idprom;
 19static 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 */
 25struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
 26/* First, Sun3's */
 27    { .name = "Sun 3/160 Series",	.id_machtype = (SM_SUN3 | SM_3_160) },
 28    { .name = "Sun 3/50",		.id_machtype = (SM_SUN3 | SM_3_50) },
 29    { .name = "Sun 3/260 Series",	.id_machtype = (SM_SUN3 | SM_3_260) },
 30    { .name = "Sun 3/110 Series",	.id_machtype = (SM_SUN3 | SM_3_110) },
 31    { .name = "Sun 3/60",		.id_machtype = (SM_SUN3 | SM_3_60) },
 32    { .name = "Sun 3/E",		.id_machtype = (SM_SUN3 | SM_3_E) },
 33/* Now, Sun3x's */
 34    { .name = "Sun 3/460 Series",	.id_machtype = (SM_SUN3X | SM_3_460) },
 35    { .name = "Sun 3/80",		.id_machtype = (SM_SUN3X | SM_3_80) },
 36/* Then, Sun4's */
 37// { .name = "Sun 4/100 Series",	.id_machtype = (SM_SUN4 | SM_4_110) },
 38// { .name = "Sun 4/200 Series",	.id_machtype = (SM_SUN4 | SM_4_260) },
 39// { .name = "Sun 4/300 Series",	.id_machtype = (SM_SUN4 | SM_4_330) },
 40// { .name = "Sun 4/400 Series",	.id_machtype = (SM_SUN4 | SM_4_470) },
 41/* And now, Sun4c's */
 42// { .name = "Sun4c SparcStation 1",	.id_machtype = (SM_SUN4C | SM_4C_SS1) },
 43// { .name = "Sun4c SparcStation IPC",	.id_machtype = (SM_SUN4C | SM_4C_IPC) },
 44// { .name = "Sun4c SparcStation 1+",	.id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) },
 45// { .name = "Sun4c SparcStation SLC",	.id_machtype = (SM_SUN4C | SM_4C_SLC) },
 46// { .name = "Sun4c SparcStation 2",	.id_machtype = (SM_SUN4C | SM_4C_SS2) },
 47// { .name = "Sun4c SparcStation ELC",	.id_machtype = (SM_SUN4C | SM_4C_ELC) },
 48// { .name = "Sun4c SparcStation IPX",	.id_machtype = (SM_SUN4C | SM_4C_IPX) },
 49/* Finally, early Sun4m's */
 50// { .name = "Sun4m SparcSystem600",	.id_machtype = (SM_SUN4M | SM_4M_SS60) },
 51// { .name = "Sun4m SparcStation10/20",	.id_machtype = (SM_SUN4M | SM_4M_SS50) },
 52// { .name = "Sun4m SparcStation5",	.id_machtype = (SM_SUN4M | SM_4M_SS40) },
 53/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
 54// { .name = "Sun4M OBP based system",	.id_machtype = (SM_SUN4M_OBP | 0x0) }
 55};
 56
 57static 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
 80void 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). */
 95static 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. */
106void __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}