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
19 struct idprom *idprom;
20 EXPORT_SYMBOL(idprom);
21
22 static 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 */
28 static 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
display_system_type(unsigned char machtype)60 static 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
sun3_get_model(unsigned char * model)83 void 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). */
calc_idprom_cksum(struct idprom * idprom)98 static 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. */
idprom_init(void)109 void __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