blob: c86ac37d198349bceea1ea94aa340668402cacf0 [file] [log] [blame]
Adrian Bunkf30828a2008-07-17 21:16:08 +02001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * 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
Al Viro2e811482006-10-11 17:28:27 +01009#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#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;
Al Viro2e811482006-10-11 17:28:27 +010020EXPORT_SYMBOL(idprom);
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022static 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 */
Adrian Bunk07b81252008-07-17 21:16:27 +020028static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070029/* 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}