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> | |
6943f3da | 11 | #include <linux/module.h> |
1da177e4 LT |
12 | |
13 | #include <asm/oplib.h> | |
14 | #include <asm/idprom.h> | |
1da177e4 LT |
15 | |
16 | struct idprom *idprom; | |
6943f3da SR |
17 | EXPORT_SYMBOL(idprom); |
18 | ||
1da177e4 LT |
19 | static struct idprom idprom_buffer; |
20 | ||
680e58f8 | 21 | #ifdef CONFIG_SPARC32 |
7d3a7001 SR |
22 | #include <asm/machines.h> /* Fun with Sun released architectures. */ |
23 | ||
1da177e4 LT |
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 | */ | |
c61c65cd | 28 | static struct Sun_Machine_Models Sun_Machines[NUM_SUN_MACHINES] = { |
1da177e4 | 29 | /* First, Sun4's */ |
7d3a7001 SR |
30 | { .name = "Sun 4/100 Series", .id_machtype = (SM_SUN4 | SM_4_110) }, |
31 | { .name = "Sun 4/200 Series", .id_machtype = (SM_SUN4 | SM_4_260) }, | |
32 | { .name = "Sun 4/300 Series", .id_machtype = (SM_SUN4 | SM_4_330) }, | |
33 | { .name = "Sun 4/400 Series", .id_machtype = (SM_SUN4 | SM_4_470) }, | |
1da177e4 | 34 | /* Now, Sun4c's */ |
7d3a7001 SR |
35 | { .name = "Sun4c SparcStation 1", .id_machtype = (SM_SUN4C | SM_4C_SS1) }, |
36 | { .name = "Sun4c SparcStation IPC", .id_machtype = (SM_SUN4C | SM_4C_IPC) }, | |
37 | { .name = "Sun4c SparcStation 1+", .id_machtype = (SM_SUN4C | SM_4C_SS1PLUS) }, | |
38 | { .name = "Sun4c SparcStation SLC", .id_machtype = (SM_SUN4C | SM_4C_SLC) }, | |
39 | { .name = "Sun4c SparcStation 2", .id_machtype = (SM_SUN4C | SM_4C_SS2) }, | |
40 | { .name = "Sun4c SparcStation ELC", .id_machtype = (SM_SUN4C | SM_4C_ELC) }, | |
41 | { .name = "Sun4c SparcStation IPX", .id_machtype = (SM_SUN4C | SM_4C_IPX) }, | |
1da177e4 | 42 | /* Finally, early Sun4m's */ |
7d3a7001 SR |
43 | { .name = "Sun4m SparcSystem600", .id_machtype = (SM_SUN4M | SM_4M_SS60) }, |
44 | { .name = "Sun4m SparcStation10/20", .id_machtype = (SM_SUN4M | SM_4M_SS50) }, | |
45 | { .name = "Sun4m SparcStation5", .id_machtype = (SM_SUN4M | SM_4M_SS40) }, | |
1da177e4 | 46 | /* One entry for the OBP arch's which are sun4d, sun4e, and newer sun4m's */ |
7d3a7001 | 47 | { .name = "Sun4M OBP based system", .id_machtype = (SM_SUN4M_OBP | 0x0) } }; |
1da177e4 LT |
48 | |
49 | static void __init display_system_type(unsigned char machtype) | |
50 | { | |
51 | char sysname[128]; | |
52 | register int i; | |
53 | ||
54 | for (i = 0; i < NUM_SUN_MACHINES; i++) { | |
7d3a7001 | 55 | if (Sun_Machines[i].id_machtype == machtype) { |
1da177e4 LT |
56 | if (machtype != (SM_SUN4M_OBP | 0x00) || |
57 | prom_getproperty(prom_root_node, "banner-name", | |
58 | sysname, sizeof(sysname)) <= 0) | |
7d3a7001 SR |
59 | printk(KERN_WARNING "TYPE: %s\n", |
60 | Sun_Machines[i].name); | |
1da177e4 | 61 | else |
7d3a7001 | 62 | printk(KERN_WARNING "TYPE: %s\n", sysname); |
1da177e4 LT |
63 | return; |
64 | } | |
65 | } | |
66 | ||
7d3a7001 | 67 | prom_printf("IDPROM: Warning, bogus id_machtype value, 0x%x\n", machtype); |
1da177e4 | 68 | } |
680e58f8 SR |
69 | #else |
70 | static void __init display_system_type(unsigned char machtype) | |
71 | { | |
72 | } | |
73 | #endif | |
1da177e4 LT |
74 | /* Calculate the IDPROM checksum (xor of the data bytes). */ |
75 | static unsigned char __init calc_idprom_cksum(struct idprom *idprom) | |
76 | { | |
77 | unsigned char cksum, i, *ptr = (unsigned char *)idprom; | |
78 | ||
79 | for (i = cksum = 0; i <= 0x0E; i++) | |
80 | cksum ^= *ptr++; | |
81 | ||
82 | return cksum; | |
83 | } | |
84 | ||
85 | /* Create a local IDPROM copy, verify integrity, and display information. */ | |
86 | void __init idprom_init(void) | |
87 | { | |
88 | prom_get_idprom((char *) &idprom_buffer, sizeof(idprom_buffer)); | |
89 | ||
90 | idprom = &idprom_buffer; | |
91 | ||
680e58f8 | 92 | if (idprom->id_format != 0x01) |
7d3a7001 | 93 | prom_printf("IDPROM: Warning, unknown format type!\n"); |
1da177e4 | 94 | |
680e58f8 | 95 | if (idprom->id_cksum != calc_idprom_cksum(idprom)) |
7d3a7001 | 96 | prom_printf("IDPROM: Warning, checksum failure (nvram=%x, calc=%x)!\n", |
1da177e4 | 97 | idprom->id_cksum, calc_idprom_cksum(idprom)); |
1da177e4 LT |
98 | |
99 | display_system_type(idprom->id_machtype); | |
100 | ||
e3c6d4ee | 101 | printk(KERN_WARNING "Ethernet address: %pM\n", idprom->id_ethaddr); |
1da177e4 | 102 | } |