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 */
 7
 8#include <linux/kernel.h>
 9#include <linux/types.h>
10#include <linux/init.h>
11#include <linux/export.h>
 
12
13#include <asm/oplib.h>
14#include <asm/idprom.h>
15
16struct idprom *idprom;
17EXPORT_SYMBOL(idprom);
18
19static struct idprom idprom_buffer;
20
21#ifdef CONFIG_SPARC32
22#include <asm/machines.h>  /* Fun with Sun released architectures. */
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[] = {
29/* First, Leon */
30{ .name = "Leon3 System-on-a-Chip",  .id_machtype = (M_LEON | M_LEON3_SOC) },
31/* Finally, early Sun4m's */
32{ .name = "Sun4m SparcSystem600",    .id_machtype = (SM_SUN4M | SM_4M_SS60) },
33{ .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
34{ .name = "Sun4m SparcStation5",     .id_machtype = (SM_SUN4M | SM_4M_SS40) },
35/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
36{ .name = "Sun4M OBP based system",  .id_machtype = (SM_SUN4M_OBP | 0x0) } };
37
38static void __init display_system_type(unsigned char machtype)
39{
40	char sysname[128];
41	register int i;
42
43	for (i = 0; i < ARRAY_SIZE(Sun_Machines); i++) {
44		if (Sun_Machines[i].id_machtype == machtype) {
45			if (machtype != (SM_SUN4M_OBP | 0x00) ||
46			    prom_getproperty(prom_root_node, "banner-name",
47					     sysname, sizeof(sysname)) <= 0)
48				printk(KERN_WARNING "TYPE: %s\n",
49				       Sun_Machines[i].name);
50			else
51				printk(KERN_WARNING "TYPE: %s\n", sysname);
52			return;
53		}
54	}
55
56	prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype);
57}
58#else
59static void __init display_system_type(unsigned char machtype)
60{
61}
62#endif
 
 
 
 
 
 
63/* Calculate the IDPROM checksum (xor of the data bytes). */
64static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
65{
66	unsigned char cksum, i, *ptr = (unsigned char *)idprom;
67
68	for (i = cksum = 0; i <= 0x0E; i++)
69		cksum ^= *ptr++;
70
71	return cksum;
72}
73
74/* Create a local IDPROM copy, verify integrity, and display information. */
75void __init idprom_init(void)
76{
77	prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
78
79	idprom = &idprom_buffer;
80
81	if (idprom->id_format != 0x01)
82		prom_printf("IDPROM: Warning, unknown format type!\n");
83
84	if (idprom->id_cksum != calc_idprom_cksum(idprom))
85		prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
86			    idprom->id_cksum, calc_idprom_cksum(idprom));
87
88	display_system_type(idprom->id_machtype);
89
90	printk(KERN_WARNING "Ethernet address: %pM\n", idprom->id_ethaddr);
91}

 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 */
 7
 8#include <linux/kernel.h>
 9#include <linux/types.h>
10#include <linux/init.h>
11#include <linux/export.h>
12#include <linux/etherdevice.h>
13
14#include <asm/oplib.h>
15#include <asm/idprom.h>
16
17struct idprom *idprom;
18EXPORT_SYMBOL(idprom);
19
20static struct idprom idprom_buffer;
21
22#ifdef CONFIG_SPARC32
23#include <asm/machines.h>  /* Fun with Sun released architectures. */
24
25/* Here is the master table of Sun machines which use some implementation
26 * of the Sparc CPU and have a meaningful IDPROM machtype value that we
27 * know about.  See asm-sparc/machines.h for empirical constants.
28 */
29static struct Sun_Machine_Models Sun_Machines[] = {
30/* First, Leon */
31{ .name = "Leon3 System-on-a-Chip",  .id_machtype = (M_LEON | M_LEON3_SOC) },
32/* Finally, early Sun4m's */
33{ .name = "Sun4m SparcSystem600",    .id_machtype = (SM_SUN4M | SM_4M_SS60) },
34{ .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) },
35{ .name = "Sun4m SparcStation5",     .id_machtype = (SM_SUN4M | SM_4M_SS40) },
36/* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
37{ .name = "Sun4M OBP based system",  .id_machtype = (SM_SUN4M_OBP | 0x0) } };
38
39static void __init display_system_type(unsigned char machtype)
40{
41	char sysname[128];
42	register int i;
43
44	for (i = 0; i < ARRAY_SIZE(Sun_Machines); i++) {
45		if (Sun_Machines[i].id_machtype == machtype) {
46			if (machtype != (SM_SUN4M_OBP | 0x00) ||
47			    prom_getproperty(prom_root_node, "banner-name",
48					     sysname, sizeof(sysname)) <= 0)
49				printk(KERN_WARNING "TYPE: %s\n",
50				       Sun_Machines[i].name);
51			else
52				printk(KERN_WARNING "TYPE: %s\n", sysname);
53			return;
54		}
55	}
56
57	prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype);
58}
59#else
60static void __init display_system_type(unsigned char machtype)
61{
62}
63#endif
64
65unsigned char *arch_get_platform_mac_address(void)
66{
67	return idprom->id_ethaddr;
68}
69
70/* Calculate the IDPROM checksum (xor of the data bytes). */
71static unsigned char __init calc_idprom_cksum(struct idprom *idprom)
72{
73	unsigned char cksum, i, *ptr = (unsigned char *)idprom;
74
75	for (i = cksum = 0; i <= 0x0E; i++)
76		cksum ^= *ptr++;
77
78	return cksum;
79}
80
81/* Create a local IDPROM copy, verify integrity, and display information. */
82void __init idprom_init(void)
83{
84	prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer));
85
86	idprom = &idprom_buffer;
87
88	if (idprom->id_format != 0x01)
89		prom_printf("IDPROM: Warning, unknown format type!\n");
90
91	if (idprom->id_cksum != calc_idprom_cksum(idprom))
92		prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
93			    idprom->id_cksum, calc_idprom_cksum(idprom));
94
95	display_system_type(idprom->id_machtype);
96
97	printk(KERN_WARNING "Ethernet address: %pM\n", idprom->id_ethaddr);
98}