Commit | Line | Data |
---|---|---|
88278ca2 | 1 | /* |
1da177e4 LT |
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 | ||
1da177e4 LT |
8 | #include <linux/kernel.h> |
9 | #include <linux/types.h> | |
10 | #include <linux/init.h> | |
11 | ||
12 | #include <asm/oplib.h> | |
13 | #include <asm/idprom.h> | |
1da177e4 LT |
14 | |
15 | struct idprom *idprom; | |
16 | static struct idprom idprom_buffer; | |
17 | ||
7d3a7001 SR |
18 | #include <asm/machines.h> /* Fun with Sun released architectures. */ |
19 | ||
1da177e4 LT |
20 | /* Here is the master table of Sun machines which use some implementation |
21 | * of the Sparc CPU and have a meaningful IDPROM machtype value that we | |
22 | * know about. See asm-sparc/machines.h for empirical constants. | |
23 | */ | |
c61c65cd | 24 | static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { |
1da177e4 | 25 | /* First, Sun4's */ |
7d3a7001 SR |
26 | { .name = "Sun 4/100 Series", .id_machtype = (SM_SUN4 | SM_4_110) }, |
27 | { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) }, | |
28 | { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) }, | |
29 | { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) }, | |
1da177e4 | 30 | /* Now, Sun4c's */ |
7d3a7001 SR |
31 | { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1) }, |
32 | { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC) }, | |
33 | { .name = "Sun4c SparcStation 1+", .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) }, | |
34 | { .name = "Sun4c SparcStation SLC", .id_machtype = (SM_SUN4C | SM_4C_SLC) }, | |
35 | { .name = "Sun4c SparcStation 2", .id_machtype = (SM_SUN4C | SM_4C_SS2) }, | |
36 | { .name = "Sun4c SparcStation ELC", .id_machtype = (SM_SUN4C | SM_4C_ELC) }, | |
37 | { .name = "Sun4c SparcStation IPX", .id_machtype = (SM_SUN4C | SM_4C_IPX) }, | |
1da177e4 | 38 | /* Finally, early Sun4m's */ |
7d3a7001 SR |
39 | { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) }, |
40 | { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) }, | |
41 | { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) }, | |
1da177e4 | 42 | /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ |
7d3a7001 | 43 | { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) } }; |
1da177e4 LT |
44 | |
45 | static void __init display_system_type(unsigned char machtype) | |
46 | { | |
47 | char sysname[128]; | |
48 | register int i; | |
49 | ||
50 | for (i = 0; i < NUM_SUN_MACHINES; i++) { | |
7d3a7001 | 51 | if (Sun_Machines[i].id_machtype == machtype) { |
1da177e4 LT |
52 | if (machtype != (SM_SUN4M_OBP | 0x00) || |
53 | prom_getproperty(prom_root_node, "banner-name", | |
54 | sysname, sizeof(sysname)) <= 0) | |
7d3a7001 SR |
55 | printk(KERN_WARNING "TYPE: %s\n", |
56 | Sun_Machines[i].name); | |
1da177e4 | 57 | else |
7d3a7001 | 58 | printk(KERN_WARNING "TYPE: %s\n", sysname); |
1da177e4 LT |
59 | return; |
60 | } | |
61 | } | |
62 | ||
7d3a7001 | 63 | prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype); |
1da177e4 LT |
64 | prom_halt(); |
65 | } | |
66 | ||
67 | /* Calculate the IDPROM checksum (xor of the data bytes). */ | |
68 | static unsigned char __init calc_idprom_cksum(struct idprom *idprom) | |
69 | { | |
70 | unsigned char cksum, i, *ptr = (unsigned char *)idprom; | |
71 | ||
72 | for (i = cksum = 0; i <= 0x0E; i++) | |
73 | cksum ^= *ptr++; | |
74 | ||
75 | return cksum; | |
76 | } | |
77 | ||
78 | /* Create a local IDPROM copy, verify integrity, and display information. */ | |
79 | void __init idprom_init(void) | |
80 | { | |
81 | prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); | |
82 | ||
83 | idprom = &idprom_buffer; | |
84 | ||
7d3a7001 SR |
85 | if (idprom->id_format != 0x01) { |
86 | prom_printf("IDPROM: Warning, unknown format type!\n"); | |
1da177e4 LT |
87 | prom_halt(); |
88 | } | |
89 | ||
90 | if (idprom->id_cksum != calc_idprom_cksum(idprom)) { | |
7d3a7001 | 91 | prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n", |
1da177e4 LT |
92 | idprom->id_cksum, calc_idprom_cksum(idprom)); |
93 | prom_halt(); | |
94 | } | |
95 | ||
96 | display_system_type(idprom->id_machtype); | |
97 | ||
7d3a7001 | 98 | printk(KERN_WARNING "Ethernet address: %02x:%02x:%02x:%02x:%02x:%02x\n", |
1da177e4 LT |
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]); | |
1da177e4 | 102 | } |