2 * idprom.c: Routines to load the idprom into kernel addresses and
3 * interpret the data contained within.
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
8 #include <linux/kernel.h>
9 #include <linux/types.h>
10 #include <linux/init.h>
12 #include <asm/oplib.h>
13 #include <asm/idprom.h>
15 struct idprom
*idprom
;
16 static struct idprom idprom_buffer
;
19 #include <asm/machines.h> /* Fun with Sun released architectures. */
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.
25 static struct Sun_Machine_Models Sun_Machines
[NUM_SUN_MACHINES
] = {
27 { .name
= "Sun 4/100 Series", .id_machtype
= (SM_SUN4
| SM_4_110
) },
28 { .name
= "Sun 4/200 Series", .id_machtype
= (SM_SUN4
| SM_4_260
) },
29 { .name
= "Sun 4/300 Series", .id_machtype
= (SM_SUN4
| SM_4_330
) },
30 { .name
= "Sun 4/400 Series", .id_machtype
= (SM_SUN4
| SM_4_470
) },
32 { .name
= "Sun4c SparcStation 1", .id_machtype
= (SM_SUN4C
| SM_4C_SS1
) },
33 { .name
= "Sun4c SparcStation IPC", .id_machtype
= (SM_SUN4C
| SM_4C_IPC
) },
34 { .name
= "Sun4c SparcStation 1+", .id_machtype
= (SM_SUN4C
| SM_4C_SS1PLUS
) },
35 { .name
= "Sun4c SparcStation SLC", .id_machtype
= (SM_SUN4C
| SM_4C_SLC
) },
36 { .name
= "Sun4c SparcStation 2", .id_machtype
= (SM_SUN4C
| SM_4C_SS2
) },
37 { .name
= "Sun4c SparcStation ELC", .id_machtype
= (SM_SUN4C
| SM_4C_ELC
) },
38 { .name
= "Sun4c SparcStation IPX", .id_machtype
= (SM_SUN4C
| SM_4C_IPX
) },
39 /* Finally, early Sun4m's */
40 { .name
= "Sun4m SparcSystem600", .id_machtype
= (SM_SUN4M
| SM_4M_SS60
) },
41 { .name
= "Sun4m SparcStation10/20", .id_machtype
= (SM_SUN4M
| SM_4M_SS50
) },
42 { .name
= "Sun4m SparcStation5", .id_machtype
= (SM_SUN4M
| SM_4M_SS40
) },
43 /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */
44 { .name
= "Sun4M OBP based system", .id_machtype
= (SM_SUN4M_OBP
| 0x0) } };
46 static void __init
display_system_type(unsigned char machtype
)
51 for (i
= 0; i
< NUM_SUN_MACHINES
; i
++) {
52 if (Sun_Machines
[i
].id_machtype
== machtype
) {
53 if (machtype
!= (SM_SUN4M_OBP
| 0x00) ||
54 prom_getproperty(prom_root_node
, "banner-name",
55 sysname
, sizeof(sysname
)) <= 0)
56 printk(KERN_WARNING
"TYPE: %s\n",
57 Sun_Machines
[i
].name
);
59 printk(KERN_WARNING
"TYPE: %s\n", sysname
);
64 prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype
);
67 static void __init
display_system_type(unsigned char machtype
)
71 /* Calculate the IDPROM checksum (xor of the data bytes). */
72 static unsigned char __init
calc_idprom_cksum(struct idprom
*idprom
)
74 unsigned char cksum
, i
, *ptr
= (unsigned char *)idprom
;
76 for (i
= cksum
= 0; i
<= 0x0E; i
++)
82 /* Create a local IDPROM copy, verify integrity, and display information. */
83 void __init
idprom_init(void)
85 prom_get_idprom((char *) &idprom_buffer
, sizeof(idprom_buffer
));
87 idprom
= &idprom_buffer
;
89 if (idprom
->id_format
!= 0x01)
90 prom_printf("IDPROM: Warning, unknown format type!\n");
92 if (idprom
->id_cksum
!= calc_idprom_cksum(idprom
))
93 prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n",
94 idprom
->id_cksum
, calc_idprom_cksum(idprom
));
96 display_system_type(idprom
->id_machtype
);
98 printk(KERN_WARNING
"Ethernet address: %02x:%02x:%02x:%02x:%02x:%02x\n",
99 idprom
->id_ethaddr
[0], idprom
->id_ethaddr
[1],
100 idprom
->id_ethaddr
[2], idprom
->id_ethaddr
[3],
101 idprom
->id_ethaddr
[4], idprom
->id_ethaddr
[5]);